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kykrilka [37]
3 years ago
13

Pleaseee someone help me TEST TOMORROW

Physics
2 answers:
Liono4ka [1.6K]3 years ago
4 0
3.A

4.c


5.A
hope this helps
evablogger [386]3 years ago
4 0
3. D
4. A
5. I think its B?
I hope you do good on your test tomorrow!
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While at the county fair, you decide to ride the Ferris wheel. Having eaten too many candy apples and elephant ears, you find th
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Answer:

v=3.47m/s

Explanation:

The speed is by definition the distance traveled divided over the time it takes to travel that distance. In this case, this distance is the circumference of the wheel, so we have:

v=\frac{C}{t}=\frac{2\pi r}{t}

where we have written the circumference in terms of its radius.

For our values we then obtain the value:

v=\frac{2\pi r}{t}=\frac{2\pi (16m)}{(29s)}=3.47m/s

5 0
3 years ago
An ideal gas is enclosed in a piston, and 1600 J of work is done on the gas. As this happens, the internal energy of the gas inc
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Answer:

- 1100 J heat flows out

Explanation:

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According to the first law of thermodynamics

dQ = dU + dW

dQ = 500 - 1600

dQ = - 1100 J

As heat is negative so it flows out.

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3 years ago
A seesaw pivots as shown in below. What is the net torque about the pivot point?
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Answer:

2.3 Nm clockwise

Explanation:

Take counterclockwise to be positive and clockwise to be negative.

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∑τ = 7.5 Nm − 9.8 Nm

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The net torque is 2.3 Nm clockwise.

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