Answers
Answer:
The horizontal and vertical distances are x = 210 m and y = -240.35 m, respectively.
Explanation:
Using the equation of the displacement in the x-direction, we have:
(let's recall we have a constant velocity in this direction)
\(x=v_{ix}t\)
Where:
v(ix) is the initil velocity in the x direction (v(ix) = 30 m/s)t is the time (t = 7 s)\(x=30(7)\)
\(x=210\: m\)
Now, we need to use the equation of the displacement in the y-direction to find the vertical distance. Here we have an acceleration (g)
\(y=v_{iy}t-\frac{1}{2}gt^2\)
Where:
v(iy) is the initial velocity at the y-direction. In this case, it will be 0t is the timeg is the acceleration of gravity (g=9.81 m/s²)Then, the vertical position at 7 s is:
\(y=-\frac{1}{2}(9.81)(7)^2\)
\(y=-240.35\: m\)
Therefore, the horizontal and vertical distances are x = 210 m and y = -240.35 m, respectively. The minus sign means the negative value in the y-direction.
I hope it helps you!
Related Questions
convert 1 Celsius to Fahrenheit
Answers
To convert Celsius to Fahrenheit, use the formula:
(°C × 9/5) + 32 = °F
Hope this helped
What role does a resistor play in an electrical circuit? A. it removes excess electrons from the outer surface of a conducting wire. B. it transforms light energy and thermal energy into electrical energy. C. it transforms the electrical energy of the electrons into other forms of energy. D. it stores electrical energy until it can be released by closing a switch
Answers
Answer:
It transforms the electrical energy of the electrons into other forms of energy.
Explanation:
Just took the quiz
a chocolate bar gives a 72kg mountaineer 2.2mj of energy if he were able to put this entirely into a store of his gpe how tall a mountain can he climb
Answers
Answer:
3117.914 m tall mountain
Explanation:
Chocolate bar gave him 2.2 Mega Joules energy
Gravitational Potential energy = mgh
now, if he store that energy entirely as gravitational potential energy then
mgh = 2.2×10^6
⇒ 72 × 9.8 × h = 2.2×10^6
⇒h = (2.2×10^6)/(72×9.8) = 3117.914 m
1. It is important to make your own decisions. At the same time, it is good to ask for help. Identify a
situation where you absolutely need to be thinking for yourself and one in which turning to others
is best when it comes to making decisions about your health.
Answers
Answer:
Explanation:
Decision making is the process of making choices and it is important for a person to make their own decisions in life as it makes them accountable for the choices they made.
What is decision making?
Decision making is the process of making your own choices by identifying a decision, gathering the information, and assessing alternative resolutions for the decision.
Each person has the right to make their own decisions and have choices about how they live their life in their own way. Each person has different ideas about what is important and what makes them feel best in life. Making own choices about things in life is very important because it gives the life meaning.
Being responsible in making own decisions means being accountable, taking charge of the course of the actions and the consequences of choices, however it is also important to turn to others in cases of making decisions about health as this helps in making the best decision by understanding things from other perspectives.
why the speed of light decreases as it passes from air into another substance?
Answers
Answer:
If light enters any substance with a higher refractive index (such as from air into glass) it slows down. The light bends towards the normal line. If light travels enters into a substance with a lower refractive index (such as from water into air) it speeds up. The light bends away from the normal line.
Using the right-hand rule, in which direction will the single wire move, and in which direction will the loop rotate?
Answers
Single Wire moves down, loop rotates left.
About single wireA single-wire system is a method of transmitting power or signals using only a single conductor. This is in contrast to the usual use of a pair of wires to provide a complete circuit, or an electrical cable containing (at least) two conductors for this purpose.
A single-wire transmission line is not the same as a single-wire earth return system. This is beyond the scope of this article. The latter system relies on reverse current flow through earth, using earth as a second conductor between earth terminal electrodes. A single-wire transmission line does not have a second conductor of any kind.
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A soccer ball, kicked from ground level at an angle of 64.0° above horizontal, is in the air for 3.40 s. What was its initial speed, in m/s, just after it was kicked? Ignore air resistance.
Answers
A soccer ball, kicked from ground level at an angle of 64.0° above horizontal, is in the air for 3.40 s. The initial speed, in m/s, just after it was kicked will be 76.07 m/s
The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics. Kinematics equations are a set of equations that can derive an unknown aspect of a body’s motion if the other aspects are provided.
given
v = 0
g = 9.8 m/\(s^{2}\)
t = 3.40 s
u = ?
cos(theta) = 64°
v = u*cos(theta) - g*t
0 = u * cos(64) - 9.8*(3.40)
u = 76.07 m/s
The initial speed, in m/s, just after it was kicked will be 76.07 m/s
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Balanced forces acting on an object keeps it at ____or moving at _____in straight line.
Fill in the ___ spaces
Answers
Answer:
Please see below as the answer is self explanatory.
Explanation:
According to Newton's 2nd law, a net force acting on an object of mass m, causes the object to be accelerated.If the forces acting on the object are balanced, which means that the net force on the object is zero, just applying the same law, we find that the object is not accelerated.According to Newton's First law, an object that is not accelerated is at rest, or moves along a straight line at constant speed.So, if there are balanced forces acting on the object, if the object is at rest, will keep at rest, and if it is moving, it will keep moving at constant speed along a straight line.Particle is thrown in upward direction with initial velocity of 60m/s. Find average speed & average velocity after 10 seconds. Take g= 10 ms-2
Answers
The particle's average speed after 10 seconds is 110 m/s, and its average velocity is zero.
When a particle is thrown upwards, its initial velocity is in the upward direction and its acceleration is in the downward direction due to gravity. The acceleration due to gravity is approximately 10 m/s² near the surface of the Earth. Therefore, the particle's velocity decreases at a rate of 10 m/s² until it reaches its highest point, where its velocity is zero. After that, the particle's velocity becomes negative and it starts to fall back to the ground.
To find the particle's average speed after 10 seconds, we need to calculate the total distance traveled by the particle in 10 seconds. The formula to calculate the distance traveled by a particle under constant acceleration is:
distance = initial velocity * time + (1/2) * acceleration * time²
Substituting the given values, we get:
distance = 60 m/s * 10 s + (1/2) * 10 m/s² * (10 s)²
distance = 600 m + 500 m
distance = 1100 m
Therefore, the average speed of the particle after 10 seconds is:
average speed = total distance / total time
average speed = 1100 m / 10 s
average speed = 110 m/s
To find the particle's average velocity after 10 seconds, we need to calculate the displacement of the particle in 10 seconds. Displacement is the change in position of the particle, which is equal to the difference between its final and initial positions. Since the particle is thrown upwards and then falls back to the ground, its displacement after 10 seconds is zero. Therefore, the average velocity of the particle after 10 seconds is also zero.
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A long wire carries a current 5 A from west to east. A magnetic compass pointing North is placed underneath the wire at a distance of 2 mm. What is the deflection of the compass when it is placed under the wire?
Answers
Answer:
no deflection
Explanation:
current is flowing from west to east. As the magnetic field of a long wire carrying current is circular, its direction will be north below the wire and south above the wire (according to the right hand rule). So, when the compass is placed underneath the wire, it will still point towards the north direction.
State 7 branches of physics
Answers
Answer:
mechanics
optics
sound
astrophysics
nuclear physics
heat and temperature
electromagnetism
are branches of physics
Answer:
- Modern Physics
- Classic Mechanic
- Astrophysics
- Nuclear Physics
- Electromagnetism
- Optics
- Thermodynamic
which produces wave particles that move and displace one another
Answers
A) a radio
B) a guitar
C) a light bulb
D) a microwave oven
If so, the answer is B. A guitar generally produces sound waves that propagate when the strings are strummed. The strings are displaced through the vibrations caused by contact of the hand and the guitar. You will also notice the vibrations by looking closely to the string. Wave particles continuously collide with each other to make a sustaining or prolonging sound.
What is MOST likely to be TRUE about asynchronous communication?
It is rarely used in businesses in today's society.
It offers many opportunities to ask clarifying questions in real time.
It is helpful when employees work across multiple time zones.
It only works when all employees work in the same time zone.
Answers
The most likely true statement about asynchronous communication is that it is helpful when employees work across multiple time zones.
Asynchronous communication refers to a mode of communication where participants do not need to be present or engaged simultaneously. Instead, they can send and receive messages at their convenience.In today's globalized society, businesses often have teams distributed across different geographical locations and time zones. Asynchronous communication becomes invaluable in such scenarios as it allows team members to collaborate effectively without the constraints of real-time interactions. By utilizing tools like email, project management platforms, or messaging apps, individuals can communicate and exchange information regardless of their location or the time differences.
Asynchronous communication also offers benefits such as flexibility and increased productivity. Team members have the freedom to work at their own pace and prioritize tasks accordingly. It provides opportunities for thoughtful and well-crafted responses, as individuals can take time to gather information or reflect on complex matters before replying.While asynchronous communication is advantageous for teams operating across multiple time zones, it does not rely on all employees working in the same time zone. In fact, it is designed to accommodate diverse schedules and allow individuals to collaborate efficiently despite their varying work hours.
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A typical radio wave has a period of 1.3 µs.
Express this period in seconds.
Answers
Answer:
1.3×10^-6 s = 0.0000013 s
Explanation:
µ is used to stand for "micro-", the SI prefix meaning 10^-6.
1.3 µs = 1.3×10^-6 s
Can you use an adjustable gas lift leg (Similar to office chair) on the moon?
Answers
A ray of light is directed toward the surface of a block of zircon at an angle of 28.0° with respect to the normal (a line perpendicular to the surface at the spot where the ray hits the block).
A fraction of the light is reflected and the rest refracted. What is the angle (in degrees) between the reflected and refracted rays?
Answers
An incident light beam is reflected back along the same direction when it strikes a flat mirror's surface ordinarily. This is because since there is no angle of incidence, there will also be no angle of reflection.
What would be seen if the block was perpendicular to the incident ray?The incident ray, the reflected ray, and the transmitted (refracted) ray will all follow the same path if the ray is perpendicular to the surface (i.e they are collinear). The ray seems to be bent at the surface if it is not perpendicular to the surface.
The angle of incidence is 0 since the beam impacts the mirror perpendicular to its surface (from the normal).
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Four cuboids are shown in the diagram below. The position of their center of mass is also shown. Which of the cuboids is the most stable.
Answers
The position of their center of mass is also shown. the square cuboids is the most stable. Hence option B is correct.
A cuboid is a six-sided solid known as a hexahedron in geometry. Quadrilaterals make up its faces. Cuboid is short for "like a cube". A cuboid is similar to a cube in that a cuboid may become a cube by varying the lengths of the edges or the angles between the faces.
The square cuboid has its center of mass on the center of square, the masses are uniformly distributed about it.
Hence option B is correct.
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The same amount of thermal energy was added to two equal masses of Aluminum and Iron. The specific heat of Aluminum is double the specific heat of iron. If the temperature of the Aluminum's mass changes by /\T, what is the change in the Iron's mass temperature?
Answers
Answer:
it is double the temperature change of iron
When a skater pulls her arms in, it
reduces her moment of inertia from
2.12 kg m² to 0.699 kg-m². If she was
initially spinning 3.25 rad/s, what is
her final angular velocity?
Answers
The skater's final angular velocity is approximately 9.86 rad/s.
The skater's final angular velocity can be calculated using the principle of conservation of angular momentum. The equation for angular momentum is given by:
L = Iω
where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.
Initially, the skater has an angular momentum of:
L_initial = I_initial * ω_initial
Substituting the given values:
L_initial = 2.12 kg m² * 3.25 rad/s
The skater's final angular momentum remains the same, as angular momentum is conserved:
L_final = L_initial
The final moment of inertia is given as 0.699 kg m². Therefore, the final angular velocity can be calculated as:
L_final = I_final * ω_final
0.699 kg m² * ω_final = 2.12 kg m² * 3.25 rad/s
Solving for ω_final:
ω_final = (2.12 kg m² * 3.25 rad/s) / 0.699 kg m²
Hence, the skater's final angular velocity is approximately 9.86 rad/s.
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A voltage of 164,112 V in a transmission line is reduced to 65,270 V at the area substation, to 13,115 V at the distributing substation and finally to 894 V at a utility pole outside your house. What turn ratio Ns/Np is required for entire process.
Answers
Turn ratio Ns/Np is equal to the ratio of voltage between the secondary (lower voltage) and the primary (higher voltage).
Ns/Np = Vs/Vp = 894/164112
Ns/Np = 0.00545
Kevin takes his dog out for a walk every day after work. He parks his car behind his home and uses the back door to get in. His dog waits for him every afternoon by the back door, knowing that Kevin will take him for a walk when he returns from work. Kevin's wife usually uses the front door to get in and out of the house. However, one afternoon, Kevin's wife arrives from work early and decides to home into the house using the back door. As she starts opening the back door, the dog starts running around like crazy, thinking its time for his walk. In this scenario, the CR is
Answers
Answer:
In this scenario, the CR (conditioned response) is the dog's behavior of running around like crazy upon hearing the sound of the back door opening. This behavior has been conditioned by the repeated pairing of the back door opening with Kevin taking the dog for a walk. The dog has learned to associate the sound of the back door opening with the upcoming walk, which causes the conditioned response of excitement and anticipation.
Explanation:
The conditioned response (CR) in this scenario is the dog running around like crazy when Kevin's wife starts opening the back door. The dog has learned to associate Kevin's return from work with going for a walk, and the sound of the back door opening has become a conditioned stimulus (CS) that elicits the CR of excitement and anticipation for the walk. When Kevin's wife opens the back door, the dog responds with the same CR, even though it's not Kevin returning from work.
Before a collision, a 25 kg object is moving at 12 m/s to the right. After a collision with stationary box, the 25 kg object moves at 8 m/s to the right. What is the resulting momentum of the box?
Answers
The initial momentum of the 25 kg object is 25 kg * 12 m/s = 300 kgm/s. After the collision, the momentum of the 25 kg object is 25 kg * 8 m/s = 200 kgm/s. According to the conservation of momentum, the momentum lost by the 25 kg object is equal to the momentum gained by the box. Therefore, the resulting momentum of the box is 300 kgm/s - 200 kgm/s = 100 kg*m/s.
Which of the following would fill in the table where "A" is?
Symbol
Element Name
Atomic Number Mass Number
#nº
#p
#e
Net Charge
Si
Silicon
A (#13)
27
B (#14 14 C (#15)
0
D (#16)
Potassium
18
39
19
18 E (#17)
A. 3
B. 13
C. 14
D. 28
Answers
Answer:
.lyrjhg.
Explanation:
qqlqfgtjnfh
Two students are canoeing on a river. While heading
upstream, they accidentally drop an empty bottle overboard. They
then continue paddling for 2 hours, reaching a point 2.5 km
farther upstream. At this point they realize that the bottle is
missing and, driven by ecological awareness, they turn around
and head downstream. They catch up with and retrieve the bottle
(which has been moving along with the current) 4.0 km downstream
from the turnaround point. (a) Assuming a constant paddling effort
throughout, how fast is the river flowing? (b) What would the canoe
speed in a still lake be for the same paddling effort?
Answers
The speed of the river flowing is 3.75 km/h, and the canoe speed in a still lake for the same paddling effort is 3.6 km/h (approximately).
The distance between the two points upstream and downstream is equal to the distance traveled by the empty bottle. Hence, the distance traveled by the bottle = distance traveled by canoeists = 4 km.Total distance traveled = distance upstream + distance downstreamTotal distance traveled = 2.5 + 4 = 6.5 kmTotal time taken = 2 hours upstream + (4/6) hours downstream (since they are covering 4 km in downstream with the current flowing downstream)Total time taken = 3.67 hours upstream + downstreamFrom the definition of speed, the speed upstream is given by:Speed upstream = distance/time upstreamSpeed upstream = 2.5/2Speed upstream = 1.25 km/hSimilarly, the speed downstream is given by:Speed downstream = distance/time downstream Speed downstream = 4/(4/6)Speed downstream = 6 km/hThe speed of the canoe in still water is given by the average of the upstream and downstream speeds:Speed in still water = (1.25 + 6)/2Speed in still water = 3.625 km/h or 3.6 km/h (approximately).
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Terell lives in Washington, D.C., where he can see the Potomac River from his bedroom window. When he sees this river, Terell thinks of swimming, boating, fun, and friends. What type of mental image is this?
A. analogical
B. symbolic
C. both analogical and symbolic
D. representative
Answers
Answer:
B. symbolic
Explanation:
The mental image formed in Terell's mind is a symbolic mental image.
A symbolic mental image helps to bring perception to imagery formed on the mind.
This process is symbolic because Terell can see that river ahead. If he cannot see the river then it is more of an analogical fantasy. The thoughts are predicated on the image of the River seen. Therefore, it is right to conclude that this is a symbolic mental image.Answer:
Terell lives in Washington, D.C., where he can see the Potomac River from his bedroom window. When he sees this river, Terell thinks of swimming, boating, fun, and friends. What type of mental image is this?
symbolic
Explanation:
Given the functions f(x)=(1/x-3)+1 and g(x) = (1/1+4)+3
Which statement describes the transformation of the graph of function f onto the graph of function g?
O The graph shifts 2 units right and 7 units down.
O The graph shifts 7 units left and 2 units up.
O
e graph shifts 7 units right and 2 units down.
O The graph shifts 2 units left and 7 units up.
Answers
The statement that describes the transformation of the graph of function f onto the graph of function g is: The graph shifts 2 units right and 7 units down.
To determine the transformation of the graph of function f onto the graph of function g, we compare the two functions f(x) and g(x) and observe the changes in the equations.
The function f(x) = (1/x - 3) + 1 represents a reciprocal function that is shifted vertically 1 unit up and horizontally 3 units to the right. The reciprocal function is reflected about the line y = x.
The function g(x) = (1/(1 + 4)) + 3 simplifies to g(x) = 4 + 3 = 7, which is a constant function representing a horizontal line at y = 7.
By comparing the equations, we can see that the transformation from f(x) to g(x) involves the following changes:
The term 1/x in f(x) is replaced by the constant 1/(1 + 4) in g(x), resulting in a vertical shift of 7 units up.
The term -3 in f(x) is replaced by 3 in g(x), resulting in a vertical shift of 3 units up.
The +1 in f(x) is replaced by +3 in g(x), resulting in an additional vertical shift of 2 units up.
Therefore, the overall transformation is a shift of 2 units to the right and 7 units down.
Hence, the correct statement is: The graph shifts 2 units right and 7 units down.
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Find the current through the resistor R1 in the circuit.
Answers
The current through resistor R1 is also 2.33 A.
What is current ?
To find the current through resistor R1 in the circuit, we can use Ohm's Law and the formula for the total resistance in a series circuit.
The total resistance in the circuit is the sum of the individual resistances:
Rtotal = R1 + R2 + R3 + R4
Rtotal = 1.0 ohm + 2.0 ohm + 1.0 ohm + 2.0 ohm
Rtotal = 6.0 ohm
The current through the circuit can be found using Ohm's Law:
I = V / Rtotal
I = 14.0V / 6.0 ohm
I ≈ 2.33 A
Since the circuit is in series, the current is the same through all the resistors, including R1. Therefore, the current through resistor R1 is also 2.33 A.
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Complete question is: The circuit is in series, the current is the same through all the resistors, including R1. Therefore, the current through resistor R1 is also 2.33 A.
Gold-198 is a radioactive isotope, and it has a half-life of about 2.5 days.
You have 100 grams of Gold-198. How many grams remain after 20 days?
3.125 grams
1.5625 grams
0.78125 grams
0.390625 grams
Answers
Answer: 0.390625 grams
Explanation:
A half-life of an element is the amount of time that it takes for half the mass of the element to decay.
Gold-198 having a half-life of 2.5 days therefore means that every 2.5 days, the mass is cut in half.
If there are 20 days, find out how many half-life periods there are:
= 20 / 2.5
= 8 periods
The half life is:
= Original mass * 0.5^number of half-life periods
= 100 * 0.5⁸
= 0.390625 grams
A pile of bricks of mass M is being raised to the tenth floor of a building of height H = 4y above the ground by a crane that is on top of the building. During the first part of the lift, the crane lifts the bricks a vertical distance h1=3y in a time t1=4T. During the second part of the lift, the crane lifts the bricks a vertical distance h2=y in t2=T. Which of the following correctly relates the power P1 generated by the crane during the first part of the lift to the power P2 generated by the crane during the second part of the lift?
A. P2=4P1
B. P2=43P1
C. P2=P1
D. P2=34P1
E. P2=13P1
Answers
Complete Question
A pile of bricks of mass M is being raised to the tenth floor of a building of height H = 4y above the ground by a crane that is on top of the building. During the first part of the lift, the crane lifts the bricks a vertical distance h1=3y in a time t1=4T. During the second part of the lift, the crane lifts the bricks a vertical distance h2=y in t2=T. Which of the following correctly relates the power P1 generated by the crane during the first part of the lift to the power P2 generated by the crane during the second part of the lift?
\(A.\ \ P_2=4P_1\)
\(B.\ \ P_2=\frac{4}{3} P1\)
\(C.\ \ P_2=P_1\)
\(D. \ \ P_2=\frac{3}{4} P_1\)
\(E. \ \ \ P_2=\frac{1}{3} P_1\)
Answer:
The correct option is B
Explanation:
From the question we are told that
The mass of the brick is M
The height height of the 10th floor is H = 4y
The height attained during the first part of the lift is \(h_1 = 3y\)
The time taken is \(t_1 = 4T\)
The height attained during the second part of the lift is \(h_2 = y\)
The time taken is \(t_2 = T\)
Generally the velocity of the crane during the first lift is mathematically represented as
\(v_1 = \frac{h_1}{t_1}\)
=> \(v_1 = \frac{3y}{4T}\)
Generally the velocity of the crane during the first lift is mathematically represented as
\(v_1 = \frac{h_2}{t_2}\)
=> \(v_1 = \frac{y}{T}\)
Generally the power generated during the first lift is
\(P_1 = F_1 * v_1\)
Here \(F_1\) force applied during the first lift which is mathematically represented as
\(F_1 = M * g\) here g is the acceleration due to gravity
So
\(P_1 = Mg * \frac{3y}{4T}\)
Generally the power generated during the second lift is
\(P_2 = F_2 * v_2\)
Here \(F_2\) force applied during the second lift which is mathematically represented as
\(F_2 = M * g\) here g is the acceleration due to gravity
So
\(P_2 = Mg * \frac{y}{T}\)
So the ratio of the first power to the second power is
\(\frac{P_1}{P_2} = \frac{Mg * \frac{3y}{4T}[}{Mg * \frac{y}{T}}\)
=> \(\frac{P_1}{P_2} = \frac{3}{4}\)
=> \(P_2 = \frac{4}{3} P_1\)
In Young's double slit experiment, the position of the bright and dark fringes depends on the distance between the slits, the distance from the slits to the screen, and the wavelength of the light.
a. How far do the slits need to be from the screen for the first dark fringe to be at y = 1.6 cm if the slits are 0.021 mm apart and the wavelength is 490 nm?
b. Using the same slits and the distance found in part a., where would the 4th bright fringe be for a 610 nm light source?
Answers
The distance between the slits and the screen needs to be 6.85cm for the first dark fringe to be at y = 1.6 cm and the 4th bright fringe would be at y = 7.9cm.
Given the distance of first dark fringe (y) = 1.6cm
The distance between slits (d) = 0.021mm
The wavelength of light (∧) = 490nm
Let the distance between slits and screen = D
(a) Since all the bright and dark fringes are of equal width we know that:
β = D∧/d where β is the fringe width
D = βd/∧ = \(1.6 * 10^-2 * 0.021 * 10^-3/490 * 10^-9 = 0.685m\)
(b) The fourth bright fringe is formed at a certain distance
Given the new wavelength of light = 610nm
β = nD∧/d = \(4 * 0.685 * 610 * 10^-9/0.021 * 10^-3 = 0.079m\)
Hence the fourth fringe will be formed at a distance of 0.079m
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