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Paraphin [41]
3 years ago
9

three students make the following claims about determining the average speed and average velocity of the object over the entire

time interval depicted in the graph below … which claim is correct?

Physics
1 answer:
Mashcka [7]3 years ago
5 0

Answer:

D. none of them po

Explanation:

pl give me points 73

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The pulley shown in the attached diagram has a diameter of 30 centimeters and a mass of 19 kilograms. The pulley is a solid disk
aleksandrvk [35]

Answer:

Explanation:

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b) τ = Fnet(r) = (25 - 12)(0.15) = 1.95 N•m

c) CCW

d) a = τ/I = 1.95 / 0.21375 = 9.12280701... = 9.1 rad/s²

e) CCW

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2 years ago
Help me to solve this please
aivan3 [116]

Answer:

2) 7

3) 5

Explanation:

6 0
3 years ago
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A closed, uninsulated system fitted with movable piston, so no matter is exchanged with the surroundings, was assembled. Introdu
xeze [42]

Answer: You do not specify what is being asked for. ∆E? ∆H?

∆E = (430 - 238) J = 192 J

∆H = 430 J

Explanation:

If asked for the value of ∆H the answer is simply the change in heat, and in the question, it states introduction of 430 J of heat is causing the system to expand.

Therefore ∆H = 430 J

If asked for ∆E, we know that ∆E = ±q (heat) + work (-P∆V) = ±q + w

The question states that 238 J of work are done AND the system expanded

(work is negative because expansion means work is done BY the system, releasing energy/heat... Conversely, if the system were compressed, work is done ON the system, absorbing heat/energy)

Therefore, ∆E = (430 - 238) J = 192 J

8 0
2 years ago
If the car travels thrice(3times) around the track,who much is the total distance covered?​
Katyanochek1 [597]
What does thrice mean not being mean or anything just saying so I can help with the question
5 0
3 years ago
A car is travelling at 70 mph. It travels for half an hour. How far has it gone?
rusak2 [61]

Answer:

35 miles

Explanation:

Since half of 70 is 35.....

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