PHYSICS HIGH SCHOOL

At a temperature of 280k, the gas in a cylinder has a volume of 20.0 liters.If the volume of the gas is decreased to 10.0 liters, what must the temperature be for the gas to remain at a constant pressure?

Answers

Answer 1

Answer:

Answer:

T = 140 K

Explanation:

As we know by ideal gas law

$PV = nRT$

now if pressure of the gas is constant

then we will have

$V = (nR)/(P) T$

now we have

$V_1 = 20.0 litre$

$T_1 = 280 K$

$V_2 = 10.0 litre$

now from above equation

$(20.0)/(10.0) = (280)/(T)$

$T = 140 K$

Answer 2

Answer: Temperature should be 140k to maintain constant pressure

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What is a newton equal to in terms of units of mass and acceleration?

Answers

1 newton =
the force that accelerates 1 kilogram of mass at the rate of 1meter per sec²

1 N = 1 kg-m/s²

1N= force needed to accelerate 1kg object to speed of 1m/s2

The big bang theory is one of the most accepted theories on the origin of the universe because of scientific evidence, such as _____.

Answers

Answer:

Movement of Galaxies away from us.

Explanation:

Big Bang theory is the most widely accepted theory which says that the universe started with a huge expansion, it was not an explosion. By that logic everything must be moving from each other even today. This was proved by observing the Redshift in the spectrum of the galaxies which means that they are moving away from us.

The big bang theory is one of the most accepted theories on the origin of the universe because of scientific evidence, such as d: distant, exploding quasars were found

Steve and Carl are driving from Scranton to Bridgeport, a distance of 180 miles. If their speed averages60 miles an hour, how long will it take them to get there?
A. 3.5 hours
B. 3 hours
C. 2.5 hours
D. 4 hours

Answers

The answer is B
every hour, Steve and Carl cover 60 miles
if they need to cover 180 miles it will take them 3 hours
you can set up a proportion
60/1=180x where x is the amount of hours Steve and Carl will drive to cover 180 miles.
proportion simplifies to this:
60x=180
isolate the varible
60x/60=180/60
x=3

the answer is B 3 hours

What is the mass of a block of ice that weighs 520 Newtons on earth? A. 26 kg B. 5100 kg C. 53 kg D. 9.8 kg

Answers

To find the mass of the block of ice, we can use the equation:

Weight = Mass × Acceleration due to gravity

In this case, the weight of the block of ice is given as 520 Newtons. The acceleration due to gravity on Earth is approximately 9.8 m/s².

So, let's plug in the given values into the equation:

520 N = Mass × 9.8 m/s²

To solve for mass, we can rearrange the equation:

Mass = Weight ÷ Acceleration due to gravity

Mass = 520 N ÷ 9.8 m/s²

Calculating this gives us:

Mass ≈ 53 kg

Therefore, the correct answer is C. 53 kg.

Final answer:

The mass of a block of ice that weighs 520 Newtons on Earth is 53 kg.

Therefore, the answer is option c

Explanation:

The weight of an object can be calculated using the formula weight = mass x acceleration due to gravity. In this case, the weight of the block of ice on Earth is given as 520 Newtons. We can use the formula to solve for mass by rearranging it to solve for mass: mass = weight/acceleration due to gravity. Assuming the acceleration due to gravity on Earth is 9.8 m/s², we can calculate the mass as follows:

mass = 520 N / 9.8 m/s² = 53 kg

Therefore, the mass of the block of ice is 53 kg.

Learn more about mass of block of ice here:

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How does a water molecule transfer from the ocean to form part of a cloud in the atmosphere?A.
precipitation from the ocean and then evaporation into a cloud

B.
condensation from the ocean and then evaporation into a cloud

C.
precipitation from the ocean and then collection into a cloud

D.
evaporation from the ocean and then condensation into a cloud

Answers

The right answer for the question that is being asked and shown above is that: "B. condensation from the ocean and then evaporation into a cloud." a water molecule transfer from the ocean to form part of a cloud in the atmosphere is that condensation from the ocean and then evaporation into a cloud

Answer:

Explanation:

that to somebody who answered!

5,000 joules of thermal energy were applied to 1-kg aluminum bar. What was the temperature increase?