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2 years ago

A long thing bar of copper is heated evenly along it's length

Physics

1 answer:

leva [86]2 years ago

8 0

Answer:

It becomes less heavy

Explanation:

Hopefully it helps!

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A clarinetist, setting out for a performance, grabs his 3.230 kg3.230 kg clarinet case (including the clarinet) from the top of

SpyIntel [72]

Answer:

- 0.5 m/s²

Explanation:

m = mass of the clarinet case = 3.230 kg

W = weight of the clarinet case in downward direction

a = vertical acceleration of the case

Weight of the clarinet case is given as

W = mg

W = 3.230 x 9.8

W = 31.654 N

F = Upward force applied = 30.10 N

Force equation for the motion of the case is given as

F - W = ma

30.10 - 31.654 = 3.230 a

a = - 0.5 m/s²

8 0

3 years ago

7 One lb of Refrigerant 134a contained within a piston–cylinder assembly undergoes a process from a state where the temperature

julsineya [31]

Answer:

$\Delta S = S_2-S_1 = 0.08835 \frac {BTU} {Lb ^ {\circ} R}$

Explanation:

A) In order to solve the table it is necessary to consult tables A11-E and A10E for refrigerant R134-a

In this way we obtain that:

$S_1 = S_f = 0.0648 \frac {BTU} {Lb. ^ {\circ} R}$

In this way,

$S_2 = S_f + x_2 (S_g-S_f) = 0.0902 + 0.5 (0.2161-0.0902)$

$S_2 = 0.15315 \frac {BTU} {Lb ^ {\circ} R}$

In this way the entropy change is,

$\Delta S = S_2-S_1 = 0.08835 \frac {BTU} {Lb. ^ {\°} R}$

B) Whenever entropy yields a positive result, the process can be carried out adiabatically.

7 0

3 years ago

How do ultraviolet rays affect skin

yan [13]

Ultraviolet rays from the sun are very strong, therefore if direct contact is made with skin, it could cause sun burn, or in a worser case skin cancer

4 0

4 years ago

Which statement describes how a machine can help make work easier? It can put out more force than the input force by decreasing

Neko [114]

Answer:

it can be

Explanation:

7 0

3 years ago

Timed please hurry

Natasha_Volkova [10]

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$The$ $answer$ $to$ $this$ $is$ :

True:

✯ EXPLANATION:

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Hope It Helped!

And tell me if The answer is wrong. . .

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$Answer$ :

- TanakaBro

7 0

3 years ago

Read 2 more answers