PHYSICS HIGH SCHOOL

At a temperature of 320K, the gas in a cylinder has a volume of 40.0 liters. If the volume of the gas is decreased to 20.0 liters, what must the temperature be for the gas pressure to remain constant?A. 160 K
B. 273 K
C. 560 K
D. 140 K

Answers

Answer 1
Answer: Assuming the gas behaves ideally,
PV/T = constant. P will also be constant in this giving us:
V₁/T₁ = V₂/T₂
40/320 = 20/T₂
T₂ = 160 K
The answer is A.
Answer 2
Answer:

Answer:

The correct answer is option A.

Explanation:

Initial volume of the gas V_1= 40.0L

Initial temperature of gas T_1= 320 K

Final volume of the gas V_2= 20.0L

Final temperature of the gas = T_2

Applying Charles' Law:

(V_1)/(T_1)=(V_2)/(T_2)

T_2=(V_2* T_1)/(V_1)=(20.0L* 320 K)/(40.0L)=160K

The temperature of the gas when volume of the gas is 20.0 L is 160 K.Hence, the correct answer is option A.

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A pendulum is swinging back and forth with a period of 2.0 seconds here on Earth. This pendulum is then brought to the Moon, where the acceleration due to gravity is much smaller. What will happen to the period of the pendulum, assuming everything else about it (mass, length, initial swing height, etc) remains exactly the same? Explain your answer.

Answers

Answer:

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A current of 120 mA flows past a point in a circuit for 25 s. How much charge passes the point in this time?
How many electrons pass the point in this time?

Answers

a) I = 120 mA = 120 x 10^(-3) A = 0.12
A = 0.12 C/s ... [b/c 1 A = 1 C/s]
t = 25 s
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Q = It
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so 3C of charge passes the point during the
25 s interval

PLEASE HELP ASAP!!!!!

Answers

Answer:

MOSE

Explanation:

Critical thinking!!Comparing and Contrasting You carry
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Answers

Answer:

no both remains same...

Explanation:

because the work done is given by the product of the both the masses added (m+m) Displacement

and second time when you carry the bags individually it comes out to be the same m×displacement + m×displacement

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Answers

Two tangible ways in which state governments improve society would be through the construction of public facilities like libraries and roads, and an intangible example would be through welfare programs.  other wise i suck but this is my best answer hope it helps enjoy
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