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Nuetrik [128]
2 years ago
10

You can apply a force of 80N to a cart, which is carrying textbooks from the library. The whole cart with the books has a mass o

f 60kg. If starting from rest, how much speed will the cart pick up after you push it for 6 seconds
Physics
1 answer:
Mashutka [201]2 years ago
3 0

F=ma

So

a = F/m

80/60

1.3ms^2

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Answer:

10.52 m

Explanation:

The power radiated by a body is given by

P = σεAT⁴ where ε = emissivity = 0.97, T = temperature = 30 C + 273 = 303 K, A = surface area of human body = 1.8 m², σ = 5.67 × 10⁻⁴ W/m²K⁴

P = σεAT⁴ = 5.67 × 10⁻⁸ W/m²K⁴ ×  0.97 × 1.8 m² × (303)⁴ = 834.45 W

This is the power radiated by the human body.

The intensity I = P/A where A = 4πr² where r = distance from human body.

I = P/4πr²

r = (√P/πI)/2

If the python is able to detect an intensity of 0.60 W/m², with a power of 834.45 W emitted by the human body, the maximum distance r, is thus

r = (√P/πI)/2 = (√834.45/0.60π)/2 = 21.04/2 = 10.52 m

So, the maximum distance at which a python could detect your presence is 10.52 m.

3 0
3 years ago
A cement truck of mass 14,000 kg moving 10m/s slams into a wall and comes to a halt in .2s. What is the force of impact on the t
skelet666 [1.2K]

And it’s x10 is 100000

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Which event in the “The Medicine Bag” is most symbolic of Martin beginning to connect with his Sioux heritage?
Sophie [7]

Answer:

A- Martin brings his friends home to meet grandpa.

Explanation:

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A. Picking up sound waves is the stage of listening that most people refer to as hearing.

<h3>What is hearing?</h3>

Hearing, or auditory perception, is the ability to perceive sounds through an organ, such as an ear, by detecting vibrations as periodic changes in the pressure of a surrounding medium.

During learning process, when someone picks up the sound waves directed to him/her, it is known as the act of hearing,

Thus, picking up sound waves is the stage of listening that most people refer to as hearing.

Learn more about hearing here: brainly.com/question/14185060

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Answer:

It's will fly like float

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