Answer:
\(\boxed {\boxed {\sf v= 0.08 \ km/min \ North}}\)
Explanation:
Velocity is found by dividing the displacement by the time.
\(v=\frac{s}{t}\)
where s is the displacement and t is the time.
The displacement is 1.6 kilometers, but it needs a direction as well. The question notes you walked North. The time is 20 minutes.
\(s= 1.6 \ km \ North \\t= 20 \ min\)
\(v=\frac{1.6 \ km \ North} { 20 \ min}\)
Divide.
\(v= 0.08 \ km/min \ North\)
Velocity is a vector quantity, so that is why it has the measurement and the direction.
The average velocity is 0.08 kilometers per minute North.
Answer:
Are there no moderators here?
Who are moderators here?
Well, the above answer is correct..
✨
4.) What determines a star brightness? *
a. Size
b. Temperature
c. Size & Temperature
d. Color & Temperature
Calculate the height of a cliff if it takes 2. 35 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8. 00 m/s.
The height of the cliff from the rock is thrown with an initial velocity of 8.00 m/s is: 45.8602 m
The formula for the downward vertical launch and the procedure we will use is:
y = V₀*t + (gt²) /2
Where:
v₀ = initial velocityg = gravityy = heightt = timeInformation about the problem:
g = 9.8 m/s²v₀ = 8.00 m/st= 2.35 sy = ?With the information gave, we can calculate the height from the rock is thrown, using the formula of downward vertical launch:
y = V₀*t + (gt²) /2
y = (8.00 m/s * 2.35 s) + [9.8 m/s² * (2.35 s)²] /2
y = 18.8 m + [9.8 m/s² * 5.5225 s²] /2
y = 18.8 m + [54.1205 m] /2
y = 18.8 m + 27.0602 m
y = 45.8602 m
What is vertical launch?In physics vertical launch is the motion described by an object that has been launched vertically in which the acceleration is the earth's gravitational force.
Learn more about vertical launch at: brainly.com/question/13962796
#SPJ4
A hockey puck has a coefficient of kinetic friction of = .20. If the puck feels a normal force of 5 N, what is the frictional force that acts on the puck?
Answer: 5 N
Explanation:
Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, like the traction required to walk without slipping, may be advantageous, they also pose a significant amount of resistance to motion.
The given parameters;
coefficient of kinetic friction, μk = 0.1normal force of the puck, Fₙ = 5 NBy multiplying the normal force and the coefficient of kinetic friction, the frictional force acting on the puck is calculated.
The frictional force that acts on the puck is calculated as follows;
F= u*f
Substitute the given parameters in the above equation and solve the frictional force.
F=0.2*5
F= 1 N
Thus, the frictional force that acts on the puck is 1 N.
To learn more about Friction,
https://brainly.com/question/13000653
https://brainly.com/question/28356847
a key piece of evidence that leads astronomers to conclude that most galaxies include a supermassive black hole in the center is that ____.
A key piece of evidence that leads astronomers to conclude that most galaxies include a supermassive black hole in the center is the observation of powerful energy emissions and specific signatures associated with active galactic nuclei (AGNs). AGNs are believed to be powered by accretion of matter onto supermassive black holes.
Astronomers have observed that certain galaxies emit tremendous amounts of energy, far beyond what can be explained by other known astrophysical processes. These active galaxies exhibit characteristics such as jets of high-energy particles, intense X-ray and gamma-ray emissions, and variations in brightness over time. These energetic phenomena are consistent with the presence of a supermassive black hole at the center of the galaxy, actively accreting matter and releasing enormous amounts of energy in the process. Additionally, studies of the dynamics of stars and gas in the central regions of galaxies have provided evidence for the existence of supermassive black holes. By measuring the orbital velocities of stars and gas near the galactic center, astronomers can infer the presence of a massive, compact object exerting gravitational influence on its surroundings.
Learn more about "supermassive black hole" here:
brainly.com/question/30801642
#SPJ11
Productivity increases when Part 2 A. inputs and outputs increase proportionately. B. outputs decrease while inputs remain the same. C. inputs decrease while outputs remain the same. D. inputs increase while outputs remain the same.
Productivity increases when inputs decrease while outputs remain the same (option C).
Productivity refers to the efficiency and effectiveness of producing goods or services. It is a measure of how much output is generated per unit of input. When productivity increases, it means that more output is being produced with the same amount of input or resources.
In option C, inputs decrease while outputs remain the same. This implies that the same level of output is achieved with fewer resources or inputs. This indicates an improvement in efficiency and productivity. By reducing inputs while maintaining the same output level, a business can optimize its resource utilization and achieve higher productivity.
To know more about efficiency , visit
https://brainly.com/question/30861596
#SPJ11
Density of water is-
Answer:
The density of water is around 997 kg/m³ of 1 gran per millilimeter
Which of the following is true for sound waves?
They require a medium
They are unrelated to vibrations.
They can travel in a vacuum
They cannot travel through liquids
None of the above
Explanation:
Answer
λ α
f
1
Wave velocity = Wavelength × Frequency
Thus, we can say that wavelength is inversely proportional to the frequency.
FALSE - Only electromagnetic waves can travel through a vacuum; mechanical waves such as sound waves require a particle-interaction to transport their energy. There are no particles in a vacuum.
Just a question anybody playing minècraft here?
Answer:
yes/nope
Explanation:
............... :)
True or False? There is more downward force on a faster car than on a slower car when both
are traveling at the same time and on the same
highway.
Answer:
false
Explanation:
bc the faster car has more inertia (i dont think im correct)
not sure but feels like it
equation for progressive wave
Answer:
y(x, t) = A Sin(ωt ± kx)
Explanation:
Waves can be classifies as either stationary (standing), or progressive (travelling). A progressive wave is one the is a traveling wave, transferring energy along its path. While a stationary wave seems not to be moving.
The general equation for a progressive wave is;
y(x, t) = A Sin(ωt ± kx)
Where: A is its amplitude, t is the time, k is the wave number.
When the wave travels in the positive x-axis direction, the equation changes to;
y(x, t) = A Sin(ωt - kx)
When it travels in the negative x- axis direction, the equation becomes;
y(x, t) = A Sin(ωt + kx)
NB: ω = 2\(\pi\)f and k = 2\(\pi\)/λ.
Set sampling period Ts=1/1000 (sec), and time axis 0 ~ 5 (sec).
Generate signals: x1(t)=10cos(ω1t); x2(t)=6sin(ω2t); x3(t)=cos(ω3t)+ 10sin(ω3t);
where ω1=50 Hz; ω2=95 Hz; ω3=120 Hz;
plot x1(t) within the maximum amplitude and time of 0~0.5 second,
Let y1(t)= x1(t)+ x2(t)+ x3(t), plot y1(t) within the maximum amplitude and time of 0~0.5 second.
ndicate the labels in x-axis and y-axis
The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.
To plot the signal x1(t) within the time range of 0 to 0.5 seconds, we need to determine the corresponding values of x1(t) for that time range.
Given that x1(t) = 10cos(ω1t) with ω1 = 50 Hz, we can calculate the values of x1(t) using the formula.
For the time range of 0 to 0.5 seconds:
- At t = 0 seconds, x1(t) = 10cos(ω1 * 0) = 10cos(0) = 10 * 1 = 10.
- At t = 0.5 seconds, x1(t) = 10cos(ω1 * 0.5) = 10cos(25π) ≈ -7.071.
Plotting these values on the y-axis against the corresponding time values on the x-axis will give us the graph of x1(t) within the time range of 0 to 0.5 seconds.
The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.
To know more about Plotting visit:
https://brainly.com/question/15579115
#SPJ11
Whats the acceleration?
Answer:
is the process of spreading
What property of sound does a decibel measure
much like a battery these generate electricity from chemical events
The term you are looking for is "chemical battery". Chemical batteries work by converting chemical energy into electrical energy through a series of chemical reactions. These reactions take place within the battery's cells, which are composed of two electrodes and an electrolyte.
When the battery is connected to a circuit, the chemical reactions produce an electrical current that can be used to power devices. Chemical batteries are widely used in many applications, including consumer electronics, electric vehicles, and renewable energy systems. They are a crucial component of our modern technological society, and ongoing research is focused on developing more efficient and sustainable battery technologies to meet growing energy demands.
To know more about electrical energy visit :-
https://brainly.com/question/16182853
#SPJ11
why were the authors interested in determining the strength of the hydrogen bond in solution as opposed to in a vacuum? how did the results compare?
The strength of the hydrogen bond in solution is of interest to researchers because hydrogen bonds play a critical role in many biological and chemical processes.
What is a hydrogen bond?A hydrogen bond is a form of attractive (dipole-dipole) contact that occurs between an electronegative atom and another electronegative atom.
The strength of the hydrogen bond in solution is of interest to researchers because hydrogen bonds play a critical role in many biological and chemical processes. In a solution, hydrogen bonds are affected by various factors such as temperature, pressure, and the presence of other molecules. Determining the strength of hydrogen bonds in a solution provides a better understanding of the behavior of these bonds in real-world conditions.
The results of studies on the strength of hydrogen bonds in solution and in a vacuum are likely to differ. The strength of hydrogen bonds in a solution is typically lower than the strength of these bonds in a vacuum due to the influence of other factors.
Learn more about the hydrogen bond here:
https://brainly.com/question/1426421
#SPJ1
giving brainly if correct show work
Answer:
Umm Lucy will weigh to many pounds
Explanation:
How much energy does it take to boil water for pasta? For a one-pound box of pastayou would need four quarts of water, which requires 15.8 kJ of energy for every degreeCelsius (°C) of temperature increase. Your thermometer measures the startingtemperature as 48°F. Water boils at 212°F.a. How many degrees Fahrenheit (°F) must you raise the temperature?b. How many degrees Celsius (°C) must you raise the temperature?c. How much energy is required to heat the f
The thermometer measures the starting temperature as,
\(T_1=48^{\circ}F\)The temperature required for the boiling the water is
\(T_2=212^{\circ}F\)(a). The temperature requires to boil is,
\(\begin{gathered} T=T_2-T_1 \\ T=212-48 \\ T=164\text{ F} \end{gathered}\)001)
9. A ball is rolled at a velocity of 12 m/s. After 36 seconds, it comes to a stop. What is the acceleration of the ball?
Answer:
0.33333333333
Explanation:
a = v/t
= 12/36
= 1/3
= 0.3333
Answer:
3
Explain
36/12
PLEASE HELP ME!!!! In your own words, what does Newton's first law mean to you?
Answer:
His first law states that unless it is forced to change its state through external force, every object will remain stationary or move in a straight line at a constant speed. It is usually taken as the definition of inertia.
Explanation:
why is it possible for a liquid to take the shape of its container?
Answer:
"The particles in a liquid are close together, but they are not bound to fixed positions; they can slide past and around each other. This enables liquids to take the shape of their container and to flow when they are poured" -My dear friend, goógle
Explanation:
yw :]
A uniform plank of 5 m is rested across the banks of a stream the plank weighs 50 N how far from the center would the weight appear to act
Answer:
kenaoaccff da di rumah aja deh biar aman aja nih orang bikin emosi mudah marah sama aja deh kalo gue juga bingung nih anak gaul banget
Why does fire has not any shadow?
A box slides off a perfectly horizontal table with an initial speed of 2 m/s. The table is 1.5m off the ground.
Vx = 2.0 m/s
1.5 m
What is the speed of the box just as it hits the ground?
Answer:
The speed of the box just as it hits the ground is 5.8 m/s
Explanation:
Given;
initial velocity of the box, u = 2 m/s
height of the table, h = 1.5 m
The speed of the box, just before it hits the ground is given by;
v² = u² + 2gh
v² = (2)² + 2 x 9.8 x 1.5
v² = 4 + 29.4
v² = 33.4
v = √33.4
v = 5.8 m/s
Therefore, the speed of the box just as it hits the ground is 5.8 m/s
help i need an explanation
Answer:
125.44 N
Explanation:
From the question given above, the following data were obtained:
Weight on earth = 784 N
Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²
Weight on moon =?
Next, we shall determine the mass of the person. This can be obtained as follow:
Weight on earth (Wₑ) = 784 N
Acceleration due to gravity of earth (gₑ) = 10 m/s²
Mass (m) =?
Wₑ = m × gₑ
784 = mass × 10
Divide both side by 10
Mass = 784 / 10
Mass = 78.4 Kg
Finally, we shall determine the weight of the person on moon. This can be obtained as follow:
Mass (m) = constant = 78.4 Kg
Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²
Weight on moon (Wₘ) =?
Wₘ = m × gₘ
Wₘ = 78.4 × 1.6
Wₘ = 125.44 N
Therefore, the weight of the person on moon is 125.44 N.
If the current through an inductor were doubled, the energy stored in the inductor would be.
Answer:
The energy stored in an inductor is given as:
EL=1/2 LI ²
So, when the current is doubled, the energy stored in the inductor will become 4 times.
a wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was sone on the wagon how much force did the student apply assuming that it was constant
Answer:
Force=2.484 N
Explanation:
\(f = \frac{w}{gh} \\ = \frac{297}{9.8 \times 12.2} \\ f = 2.484 \: n \)
Hope it helped
PLS mark BRAINLIEST
A wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was done on the wagon force did the student apply is 24.34 N.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
work = force*distance
force = work/distance
force = 297/12.2
force = 24.34 N
A wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was done on the wagon force did the student apply is 24.34 N.
To learn more about force refer to the link:
brainly.com/question/13191643
#SPJ2
Weight is the amount of matter in an object true or false
Answer:
False.
Explanation:
Mass is the amount of matter in a given object. Weight is the force acting on an object due to gravity.
Answer:
False
Explanation:
Weight is the act of pulling an object towards the earth surface so weight is a force to amount
The coetticient of friction between a block and the surface it slides across is 0.360. The block has a mass of 150 kg
What force is required to accelerate the block 0.5 m/a^2.
The friction between the b;ock and surface is given by mass and accelerartion.
Force = mass * acceleration
A vector is 253 m long andpoints in a 55.8 degreedirection.Find the y-component of thevector.
The components of the vector v are given as:
\(\begin{gathered} v_x=v\cos \theta \\ v_y=v\sin \theta \end{gathered}\)where v is the magnitude of the vector and theta is the angle.
In this case we have v=253 and theta=55.8°, plugging this values into the y component we have:
\(\begin{gathered} v_y=253\sin 55.8 \\ v_y=209.25 \end{gathered}\)Therefore the y component is 209.25 meters.
Carbon has six protons. Which model shows a neutral atom of carbon?
Explanation:
Neutral carbon-12 (or any carbon atom) has 6 electrons with a total negative charge of 6e- orbiting a nucleus with a total positive charge of 6e+, so that the total net charge is zero. The nucleus is made up of 6 protons, each with a positive charge of e+, and 6 neutrons, each with zero charge.