Answer:
thank you
Explanation:
Split up the two given velocity vectors into horizontal and vertical components.
Plane:
p = (100 km/h) (cos(90°) i + sin(90°) j ) = (100 km/h) j
Its direction is given, 90° relative to east.
Traveling for 3 hours with this velocity results in a displacement of
p * (3 h) = (300 km/h) (3h) j = (900 km) j
meaning that this velocity contributes to a north-facing displacement of 900 km.
Wind:
w = (30 km/h) (cos(315°) i + sin(315°) j ) ≈ (21.2 km/h) i + (-21.2 km/h) j
Its direction is also given, 315° relative to east.
After 3 h, this velocity contributes to a displacement of
w * (3h) ≈ (63.6 km) i + (-63.6 km) j
meaning if the plane had no velocity of its own but somehow stayed in the air, the wind would have pushed it about 63.6 km south and 63.6 km east, which translates to a net displacement of
√((63.6 km)² + (-63.6 km)²) = 90 km
due southeast.
Putting everything together, your table displacement table should read:
. | wind | plane
velocity | 30 | 100 ... km/h
direction | 90° | 315° ... relative to east
x | 63.6 | 0 ... km
y | -63.6 | 900 ... km
The resultant vector is the sum of these, r = p + w :
r ≈ (21.2 km/h) i + (78.8 km/h) j
After 3 h, the resultant displacement is
r * (3h) ≈ (63.6 km) i + (236.4 km) j
with magnitude
√((63.6 km)² + (236.4 km)²) ≈ 244.8 km
and direction θ such that
tan(θ) ≈ (236.4 km) / (63.6 km)
θ ≈ arctan(3.714) ≈ 74.9°
So the resultant table should read
xnet | 63.6 km
ynet | 236.4 km
magnitude | 244.8 km
theta | 74.9° relative to east
Which of the following feedbacks are definitely positive (that is, there is no uncertainty that they are positive)? [select all that apply] Laspe rate feedback Water vapor feedback Ice albedo feedback Cloud feedback Question 4 1 pts Which of these feedbacks affect the terrestrial radiation budget? [select all that apply] Lapse rate feedback Ice-albedo feedback Water vapor feedback Cloud feedback
The positive feedbacks without uncertainty are water vapor feedback. The feedbacks that affect the terrestrial radiation budget are lapse rate feedback, ice-albedo feedback, water vapor feedback, and cloud feedback.
Among the feedbacks listed, the ones that are definitely positive (without uncertainty) are: 1. Water vapor feedback: An increase in temperature leads to an increase in atmospheric water vapor content, which amplifies the greenhouse effect and further enhances warming. This feedback is positive. The feedbacks that affect the terrestrial radiation budget (the balance of incoming and outgoing radiation at the Earth's surface) are: 1. Lapse rate feedback: This feedback is related to the vertical temperature profile of the atmosphere. If the lapse rate (the rate at which temperature changes with altitude) decreases with warming, it can amplify the warming or cooling effects. It affects the radiation budget indirectly by influencing the atmospheric temperature structure. 2. Ice-albedo feedback: When temperatures rise, ice and snow cover decrease, exposing darker surfaces (such as land or ocean) that absorb more solar radiation. This leads to further warming, creating a positive feedback loop that affects the radiation budget. 3. Water vapor feedback: As mentioned earlier, an increase in temperature leads to increased atmospheric water vapor content. Water vapor is a potent greenhouse gas that affects the radiation budget by trapping outgoing longwave radiation and amplifying the greenhouse effect.b4. Cloud feedback: Changes in temperature and atmospheric moisture content can affect cloud formation and properties. Clouds can either trap heat (positive feedback) or reflect sunlight back to space (negative feedback), depending on their type, altitude, and coverage. The net effect of cloud feedback on the terrestrial radiation budget depends on the specific cloud changes in response to warming.
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Two test charges q1 of 1.0 and q3 of -2 are separated by 10cm. find the distance where the net ofrce acting ona charge q3 is zero and the charge q3 stays at rest. does the sign of the charge q3 matter.
Here, x is the distance between the charge q3 and the distance at which the net force is zero
According to Coulomb’s law:
F= kq1q2/d²
Where, F = force
1 = charge'
1q
2 = charge
2d = distance
K = 9×109 Nm²/C²
Here, q1 = 1.
0Cq3 = -2
Cand d = 10cm=0.1m
Now, according to the question, we have to find the distance where the net force acting on charge q3 is zero and the charge q3 stays at rest. To calculate the distance between the charges q1 and q3 at which the net force on charge q3 is zero, the following equation can be used:
F(q1,q3) = F(q3,q1)
Substituting the values in the equation, we get:
kq1q3/d² = kq3q1/d²
q1q3 = -q3q1
q1q3 + q1q3 = 0
2q1q3 = 0
q1q3 = 0
Therefore, q1q3 = 0 means either
q1 = 0 or
q3 = 0If
q1 = 0, then
F = 0 as there is no charge.
If q3 = 0, then
F = 0 as there is no charge.
Hence, for a zero net force, the charge on q3 does not matter. Now, we have to calculate the distance between the charges q1 and q3 at which the net force on charge q3 is zero. As we know that
F = kq1q3/d²
Therefore, the net force acting on q3 can be written as:
F net = kq1q3/(d-x) ² - kq3q1/x²
Here, x is the distance between the charge q3 and the distance at which the net force is zero.
Now, we can write the following equation:
kq1q3/(d-x) ² - kq3q1/x² = 0
By solving this equation, we can find the value of x and then we can find the distance by subtracting x from the total distance which is 10cm or 0.1m.
The distance between the charges q1 and q3 at which the net force acting on q3 is zero is given by the following equation:
F net = kq1q3/(d-x) ² - kq3q1/x²
where k = 9×109 Nm²/C²,
q1 = 1.0C,
q3 = -2C and
d = 10cm.
Here, x is the distance between the charge q3 and the distance at which the net force is zero.
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How Negative Points Works
btw help me with this
How much does the sky weigh?
Answer:
it weighs 237469812734t7162341873498273417234321476281736481273648123764812736481723648273648137468127364872364 million pounds :)
Explanation:
Answer:
This is a dumb question.
Explanation:
The 'sky' does not weigh anything.
When is the kinetic energy of the ball zero and when is it at its highest? When is its potential energy at its lowest and at its highest? What happens to the kinetic energy and potential energy between point A and point B? (3 points)
Answer:
if there is only one planet in the universe and the ball is there it will have 0 kinetic energy if the ball is in the very center of that planet only if the planet itself is absolutely motionless. its at its highest if the planet is moving away from the ball at a slightly faster speed forever. Between point A and B both potential energy and kinetic energy are at perfect 0.
Explanation:
never will have a measurable kinetic or potential energy status unless every single object is included in the calculation.
Pls help me!!!!!!!!!!!!!!!!!
Answer:they are a renewable source
Explanation: because they come from the ocean and the ocean is 75% of the world so there will always be waves.
An object traveling at speed vv in a circle of radius rr/2 has an acceleration aa . part a if both speed and radius are doubled, the new acceleration will be:_________
If both the speed and radius of an object traveling in a circle are doubled, the new acceleration will be four times the original acceleration.
The acceleration of an object moving in a circle is given by the equation:
a = v^2 / r
where
a = acceleration
v = speed
r = radius
In this case, the object is traveling at speed "v" in a circle of radius "r/2". So, we can rewrite the acceleration equation as:
a = v^2 / (r/2)
To find the new acceleration when both the speed and radius are doubled, we need to calculate the new acceleration using the new values.
If we double the speed and radius, we get:
New speed = 2v
New radius = 2r
Plugging these values into the acceleration equation, we have:
New acceleration = (2v)^2 / (2r) = 4v^2 / (2r) = 2v^2 / r
Compare between new acceleration and original acceleration:
New acceleration / Original acceleration = (2v^2 / r) / (v^2 / (r/2)) = (2v^2 / r) * (2r / v^2) = 4
Therefore, the new acceleration will be four times the original acceleration when both the speed and radius are doubled.
When both the speed and radius of an object traveling in a circle are doubled, the new acceleration will be four times the original acceleration. This relationship arises from the equation for acceleration in circular motion, which shows that the acceleration is inversely proportional to the radius and directly proportional to the square of the speed.
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patricia has a weight of 131 lb.note: this is a multi-part question. once an answer is submitted, you will be unable to return to this part.what is her weight in newtons? (1 lb
The volume of the rectangular prism is 480 cubic centimeters.
The question asks us to find the volume of a rectangular prism with dimensions 12 cm by 8 cm by 5 cm. A rectangular prism is a 3-dimensional shape with six rectangular faces, where opposite faces are congruent and parallel.
To find the volume of a rectangular prism, we use the formula:
Volume = length x width x height
In this case, the length is 12 cm, the width is 8 cm, and the height is 5 cm. So, we substitute these values into the formula:
Volume = 12 cm x 8 cm x 5 cm
Volume = 480 cubic centimeters
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I flick the rope to create a wave with a frequency of 2 Hz and a
wavelength of 6 m.
• How fast does the wave travel down the rope?
• What is the new wavelength?
• What is the wave speed?
Answer: 1. 12 MPH 2. 36m 3. 8 Hz
Explanation:
Answer:
1. 12 MPH 2. 36m 3. 8 Hz
Explanation:
For #1, I multiplied 6 by 2, For #2 I multiplied 6 by 6 and for #3 it's 8 x 2
what is the physical significance of the nusselt number n u? how does the reynolds number affect it?
a. Nusselt number (Nu) represents the ratio of convective to conductive heat transfer, indicating the efficiency of convective heat transfer.
b. The Reynolds number (Re) influences the Nusselt number by determining the flow regime, with higher Reynolds numbers corresponding to higher Nusselt numbers and more efficient convective heat transfer.
a. The physical significance of the Nusselt number is that it provides information about the efficiency of convective heat transfer. A higher Nusselt number indicates that convective heat transfer is more dominant compared to conductive heat transfer. It is commonly used to analyze heat transfer in fluid flows, such as in pipes, channels, or heat exchangers.
b. The Reynolds number influences the Nusselt number because it affects the flow regime and flow behavior. In forced convection heat transfer, the Reynolds number determines whether the flow is laminar or turbulent. The transition from laminar to turbulent flow is characterized by a critical Reynolds number.
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happy valentines everyone <3 I dont want a partner i just want a crumb of future PLEASE "A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the temperature rises to 40°C in summer? The average coefficient of linear expansion of this steel is 11 x 10-6 K-1. *
Answer:
1000.66m
Explanation:
\(l 2 = l1(1 + \alpha \: \times change \:in \: temperature)\)
L1=1000m
Temperature 1=-20
L2=?
Temperature 2=40
Temperature difference=40-(-20)
40+20=60
inserting into the formula
l2=l1(1+α×changeintemperature)
L2=1000(1+11×10^-6 ×60)
L2=1000(1+6.6×10^-4)
L2=1000(1.000.66)
L2=1000.66m
l2 = l1 (1 + α × change in temperature)
L1 = 1000m
Temperature 1 = -20
L2 = ?
Temperature 2 = 40
Temperature difference = 40 - (- 20)
40+20=60
Inserting into the formulal2 = l1 (1 + α × change in temperature)L² = 1000(1+11×10^-6 ×60)L² = 1000(1+6.6×10^-4)L² = 1000(1.000.66)L² = 1000.66m Ans.Which provides a greater mechanical advantage; a single fixed pulley or a two pulley system? Why?
Help! How do you find the Eccentricity??
Explanation:
The formula to determine the eccentricity of an ellipse is the distance between foci divided by the length of the major axis
What physical property of the lens does the y-intercept represent? 1 5. Write a short, general statement about the image that is produced when the object is placed between the focal point and the lens. Your statement must contain threecharacteristics (i.e., type, orientation, size, etc.) about the image to receive full credit.
The y-intercept of the lens represents the focal length of the lens.
The y-intercept of a lens refers to the point where the incident rays, parallel to the principal axis, converge or appear to diverge after passing through the lens. In other words, it represents the distance from the lens to the focal point.
When an object is placed between the focal point and the lens, a specific type of image is produced. This situation is known as an object placed in front of a converging lens. The characteristics of the image formed in this case are as follows:
1. Type: The image is virtual, meaning it cannot be projected onto a screen. It can only be seen when looking through the lens.
2. Orientation: The image is upright. It appears in the same orientation as the object.
3. Size: The image is magnified compared to the object. It is larger in size.
These three characteristics hold true when the object is positioned between the focal point and the lens. It is important to note that the specific values of the image's size and magnification would depend on the specific distance of the object from the lens and the focal length of the lens.
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Which of the following is the most likely consrquence of gang involvement
Answer:
????
Explanation:
was their supposed to be a picture?
the inside of the sun is blank . multiple choice question. hotter than the surface of the sun liquid less dense than the surface region of the sun
The inside of the sun is hotter than the surface of the sun.
The sun's core, where nuclear fusion occurs, has a temperature of approximately 15 million degrees Celsius, while the surface, known as the photosphere, is around 5,500 degrees Celsius. The significant difference in temperature is due to the energy generation process at the core, which involves the fusion of hydrogen atoms to form helium. This process releases a tremendous amount of heat and light, causing the core to be significantly hotter than the surface.
As we move outwards from the core, the temperature decreases gradually through the radiative and convective zones. The radiative zone is where energy moves through radiation, while the convective zone involves the movement of heat through convection currents. The cooler, less dense plasma rises to the photosphere and then sinks back down as it cools, creating a continuous cycle.
In summary, the inside of the sun is hotter than its surface due to the nuclear fusion process occurring at the core. The temperature decreases as we move outward from the core through the radiative and convective zones, eventually reaching the surface, which is cooler and denser in comparison.
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8. Give the net force for the following:
10 N
30 N
3N
3N
2N →
4N->
Js
SN
Answer:
i think it's is 30N
Explanation:
i got it right
a crane lifts a load from rest up to the top of a tower and gently sets it down. match the description on the right with the work done on the left.
The work done by the crane on the load is positive. As the load was initially at rest, the crane had to apply a force greater than the weight of the load to lift it up against gravity. This means that the crane did work on the load by transferring energy to it in the form of gravitational potential energy.
The work done is equal to the product of the force applied by the crane and the distance over which the force was applied.
Once the load reaches the top of the tower, the work done on the load is zero. This is because the load is no longer moving and is not experiencing any change in potential energy or kinetic energy. The crane is also not applying any force on the load at this point.
As the crane gently sets the load down, the work done on the load is negative. The crane is applying a force that is less than the weight of the load, and the load is moving in the opposite direction to its initial motion. This means that the crane is transferring energy out of the load, resulting in a decrease in the load's potential energy. The work done is equal to the product of the force applied by the crane and the distance over which the force was applied, which is in the opposite direction to the direction of motion.
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The mass of blood Keona donates is g
Answer: 501.57g
Explanation: g=1.06×473.176
A canon moves backward as the cannonball shoots out, is an example of which of Newton‘s laws?
A. 1st Law
B. 2nd Law
C. 3rd Law
The given scenario is an example of Newton's 3rd Law which states that for every action, there is an equal and opposite reaction.
In this case, the action is the force applied by the cannonball on the cannon, and the reaction is the force applied by the cannon on the cannonball. As the cannonball shoots out of the cannon, it applies a force in the forward direction, and, as a reaction, the cannon applies an equal force in the backward direction, causing it to move backward. This happens because the forces are acting on two different objects. The cannonball and the cannon are two different objects, and so the forces they exert on each other are equal and opposite. Therefore, we can conclude that the scenario mentioned in the question is an example of Newton's 3rd Law.
Newton's third law is officially expressed as follows: There is an equal and opposite reaction to every action. The implication of the statement is that there are always two forces acting on the two interacting objects. The force acting on the first object is equal in size to the force acting on the second.
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1. A rocket is launched from a 300 cm rail. The upper Launch Lug is placed 1 point 150 cm from the bottom of the rocket. What is the effective distance of the Launch Rail? 300 cm 150 cm 3 m 300 m O 1m O 1.5 m
Answer:
i think its going to be 150 because its half of 300
Explanation:
A wave has a time period of 0.1s and is travelling at a speed of 340 m/s. calculate the wavelength of the wave
If a wave has a time period of 0.1s and is travelling at a speed of 340 m/s, the wavelength of the wave is 34 meters.
What is wave?A wave is a dynamic disturbance of one or more quantities that propagates in physics, mathematics, and related sciences. When waves oscillate frequently around an equilibrium value at a certain frequency, they are said to be periodic.
The wavelength of the wave = speed of the wave × time period of the wave
= 340 m/s × 0.1 s
= 34 m.
Hence, the wavelength of the wave is 34 meters.
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State the career function of chemical engineering
Answer:
Chemical engineers develop and design chemical manufacturing processes. They apply the principles of chemistry, biology, physics, and math to answer problems that involve the production of chemicals, fuel, drugs, food, and many products
Explanation:
Answer:
The main role of chemical engineers is to design and troubleshoot processes for the production of chemicals, fuels, foods, pharmaceuticals, and biologicals, just to name a few. They are most often employed by large-scale manufacturing plants to maximize productivity and product quality while minimizing costs
Explanation:
This type of mutation occurs when one or more base pairs are added to the gene sequence.
Answer:
Insertion
Explanation:
It causes a frameshift.
girls amass __________ % of their adult bone mass by age 18.
Girls amass approximately 90% of their adult bone mass by the age of 18. This is an important period of bone growth and development, as it is when the body is able to absorb and store the most amount of calcium and other minerals necessary for strong bones.
Adequate intake of calcium and vitamin D during this period is crucial to ensure that girls reach their peak bone mass potential. Additionally, physical activity plays a significant role in bone health as weight-bearing exercise helps to stimulate bone growth and increase bone density.
It is important for girls to establish healthy lifestyle habits during adolescence in order to prevent bone loss and reduce the risk of osteoporosis later in life. Factors such as smoking, excessive alcohol consumption, and poor nutrition can all contribute to decreased bone density and increased risk of fractures. Therefore, it is essential for young girls to prioritize bone health and make healthy lifestyle choices to optimize their bone growth and development.
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ability of the muscles to function effectively and efficiently without undue fatigue
Physical fitness can be defined as the “ability to carry out daily tasks with vigor and alertness, without undue fatigue, and with ample energy to enjoy leisure-time pursuits and to meet unforeseen emergencies” (Park 1989).
Which type of electromagnetic wave is used for nuclear power and medical treatment
Answer:
Gamma rays is used for nuclear power and for medical treatment
Which factors affect friction between two solid surfaces? Select two options. The weight of the objects the surface area of the objects the shape of the objects the roughness of the objects’ surfaces.
The friction between the two solid surfaces depends on the weight of the objects on the surface and the roughness of the object surfaces.
When the two bodies are in contact such that a force acts to restrict the motion of each body, then the force is known as frictional force. And the phenomenon is called friction.
The expression for the frictional force is given as,
\(F = \mu \times N\)
Here,
\(\mu\) is the frictional coefficient and N is the normal reaction. (N = mg)
Clearly, the frictional force is dependent on the frictional coefficient of the surfaces and in turn, depends on the roughness of object surfaces. Also, friction depends on a normal reaction whose value is equivalent to the weight of objects on the surface.
Thus, we can conclude that the friction between the two solid surfaces depends on the weight of the objects on the surface and the roughness of the object surfaces.
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Answer:
A,d
Explanation:
the weight of the objects and the roughness of the objects’ surfaces i took the test
what is the energy of a radio photon from the same station?
A radio photon is a quantum of electromagnetic radiation in the radio frequency range of the electromagnetic spectrum. Electromagnetic radiation is a type of energy that travels through space as waves, and is characterized by its frequency, wavelength, and energy.
What is the energy of a radio photon from the same station?The energy of a radio photon from a particular radio station depends on the frequency of the radio wave, which is typically measured in Hertz (Hz). The energy of a photon is given by Planck's equation:
E = h*f
where E is the energy of the photon, h is Planck's constant (6.626 x 10^-34 joule-seconds), and f is the frequency of the wave.
For a typical radio station, the frequency of the radio wave is in the range of several hundred kilohertz to several megahertz. Let's take the example of a radio station that broadcasts at a frequency of 1000 kilohertz (1 megahertz).
Using the equation above, we can calculate the energy of a single photon of this radio wave as follows:
E = 6.626 x 10^-34 J*s * 1 x 10^6 Hz
E = 6.626 x 10^-28 joules
So, the energy of a radio photon from a 1-megahertz radio station is about 6.626 x 10^-28 joules.
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is there a simple mathematical relationship between the focal length of the mirror and the radius of curvature?
Yes, there is a simple mathematical relationship between the focal length of a mirror and the radius of curvature.
The relationship between the focal length and the radius of curvature is given by the formula: f = R/2, where f is the focal length and R is the radius of curvature.
This formula shows that the focal length is directly proportional to the radius of curvature, with a constant of proportionality of 1/2. This means that as the radius of curvature increases, the focal length also increases. Conversely, as the radius of curvature decreases, the focal length decreases as well. This relationship is important in understanding the behavior of mirrors and their ability to reflect light to form images.
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In general, which of the following is not a critical skill for participating in a sport? a. agility and balance b. endurance and muscle control c. hand-eye coordination and acuity d. none of the above please select the best answer from the choices provided. a b c d
Option D is not a critical skill for participating in a sport.
What are sports?Sport refers to any competitive physical activity or game[1] that intends to utilize, maintain, or enhance physical ability and skills while also giving enjoyment to players and, in certain situations, entertainment to spectators.
Agility and balance are crucial in sports such as soccer, especially when players dribble the ball at rapid speeds.
Endurance and muscular control are critical in sports such as gymnastics and boxing.
Hand-eye coordination and acuity are essential in sports like golf.
Hence Option D is not a critical skill for participating in a sport.
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Answer:
D
Explanation