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Gekata [30.6K]
4 years ago
12

Please help me on this!!!

Physics
1 answer:
n200080 [17]4 years ago
4 0

Answer:

I think the brick

Explanation:

It’s heavier

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A jogger runs 5.0 km on a straight trail at an angle of 60° south of west. What is the southern component of the run rounded to
liberstina [14]
60 ° is the angle between W- direction and the run direction.

You need the angle betwee S-direction and the run direction. This is 90° - 60° = 30 °.

By geometry you can trace a right triangle, where the S-component is the adyacent side and the run  is the hypotenuse.

Then cos 30° = adyacent side / hypotenuse = S-component / run

Then S-component = run * cos 30° = 5.0 km * 0.866 = 4.3 km

Answer: 4.3 km
6 0
4 years ago
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Explain what chain rule is . workout appropriate examples to support your explanation.
Luda [366]
The chain rule is a formula for computing the derivative of the composition of two or more functions.

<span> (f o g(x)<span>)1</span>=<span>g′</span>(x)<span>f′</span>(g(x))</span>
or
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5 0
3 years ago
A 2.5 kg stone is released from rest and falls toward Earth. After 4.0 s, magnitude of its momentum in kg.m/s is :
11111nata11111 [884]

Answer:

B

Explanation:

momentum = mass * velocity

velocity = initial speed + acceleration * time where initial speed =0, acceleration = 9.81, time = 4

8 0
3 years ago
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The mass of 29000 N elevator is
Lana71 [14]

<span>In this case we are given a force of 29,000 N. We know that the equation we  can use is:</span>

Force = mass * acceleration

 

However this is not just any type of force, because this is the weight of the elevator. So when the force is equal to weight, the acceleration acting is simply gravity. Therefore:

 

weight = mass * gravity

 

Calculating for mass:

mass = 29,000 N / (9.8 m/s^2)

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5 0
3 years ago
An electron is travelling in the positive x direction. A uniform electric field is in the negative y direction. If a uniform mag
tatuchka [14]

Answer:

into the page

Explanation:

Since the uniform electric field is in the negative y direction so its is -E and the electron is travelling in the positive x direction, it experiences an electric force F = -e × -E = + eE, so the electric force is in the positive y direction. Now since the net force on the electron is zero in the region of the magnetic field, it follows that the direction of the magnetic force is opposite to that of the electric force. Since the electric force is in the positive y direction, the magnetic force is in the negative y direction.

By the right hand rule, since the magnetic force is in the negative y direction and the electron moves in the positive x direction, it follows that the magnetic field is in the positive z direction, into the page.

3 0
3 years ago
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