1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
d1i1m1o1n [39]
2 years ago
9

A rubber balloon is filled with 1 L of air at 1 atm and 300 K and is then put into a cryogenic refrigerator at 100 K. The rubber

remains flexible as it cools. (i) What happens to the volume of the balloon?(a) It decreases to 1/3 L.(b) It decreases to 1/√3 L.(c) It is constant.(d) It increases to √3 L.(e) It increases to 3 L.(ii) What happens to the pressure of the air in the balloon?(a) It decreases to 1/3 atm.(b) It decreases to 1/√3 atm.(c) It is constant.(d) It increases to 1/√3 atm.(e) It increases to 3 atm.
Physics
1 answer:
Kipish [7]2 years ago
8 0

Answer:

The correct answers are

(a) It decreases to 1/3 L

(ii) is (c) It is constant

Explanation:

to solve this, we list out the number of knowns and unknowns so as to determine the correct equation to solve the problem

The given variables are as follows

Initial volume V1 = 1L

V2 = Unknown

Initial Temperature T1 = 300K

let us assume that the balloon is perfectly elastic

At 300K the balloon is filled and it stretches to maintain 1 atmosphere

at 100K the content of the balloon cools reducing the excitement of the gas content which also reduces the pressure, however, the balloon being perfectly elastic, contracts to maintain the 1 atmospheric pressure, hence the answer to (ii) is (c) It is constant,

For (i) since we know that the pressure of the balloon is constant

by Charles Law V1/T1 =V2/T2

or V2 = (V1/T1)×T2 =\frac{1L}{300K}× 100K= \frac{1}{3} × L = L/3 hence the correct answer to (i) is 1/3L

You might be interested in
Covalent bonds tend to make atoms more stable by helping them
Lelechka [254]
Achieve a full outer shell
6 0
2 years ago
A
loris [4]

Hi

The answer to this question is B. Reaction

7 0
2 years ago
What is he total resistance?<br> A. 20 ohms<br> B. 90 ohms<br> C. 40 ohms<br> D. 30 ohms
ehidna [41]
Imma guess A! Idk if it’s 100% correct tho so I’d check that!
6 0
2 years ago
Read 2 more answers
When running a half marathon (13.1 miles), it took Kevin 8 minutes to run from mile marker 1 to mile marker 2, and 18 minutes to
Vsevolod [243]

Answer:

It took Kevin 26 minutes to run from markers 1 to 4

His average speed from mile markers 1 to 4 is 0.154 miles/minute

Kevin must run by average speed 0.1 miles/minute to finish the race

Explanation:

Lets explain how to solve the problem

A half marathon 13.1 miles

Kevin took 8 minutes to run from mile marker 1 to mile marker 2 and

18 minutes to run from mile marker 2 to mile marker 4

→ He took 8 minutes and 18 minutes to run from marker 1 to marker 4

→ The total time of the first 4 marker = 8 + 18 = 26 minutes

<em>It took Kevin 26 minutes to run from markers 1 to 4</em>

<em></em>

Average speed is total distance divided by total time

The average speed of Kevin as he ran from mile marker 1 to mile

marker 4 is the 4 miles divides by 26 minutes

→ Average speed = 4 ÷ 26 = \frac{2}{13} = 0.154 miles/minute

<em>His average speed from mile markers 1 to 4 is 0.154 miles/minute</em>

<em></em>

It took Kevin 71 minutes to pass mile marker 9

Kevin need to complete the race in 112 minutes, then what must

Kevin's average speed be as he travels from mile marker 9 to the

finish line?

The total distance of the race is 13.1 miles, he ran 9 miles

→ The remaining distance = 13.1 - 9 = 4.1 miles

He must run 4.1 miles to complete the race

The total time is 112 minutes, he used 71 minutes to run the first 9 miles

→ The remaining time = 112 - 71 = 41 minutes

He must finish the 4.1 miles in 41 minutes

→ His average speed for the last part of the race = 4.1 ÷ 41 = 0.1 mi/min

<em>Kevin must run by average speed 0.1 miles/minute to finish the race</em>

7 0
2 years ago
Read 2 more answers
When light generated by a lamp in a light microscope passes into a lens, the speed of the light _______ because the glass lens h
Alina [70]

Answer:

the answer is slows and greater

Hopes it helps!

6 0
3 years ago
Other questions:
  • An object starts at rest then accelerates at a rate of 5m/s^2 for 1 second and then 2m/s^2 for 2 seconds. What is the average ac
    10·1 answer
  • HELP!!
    11·2 answers
  • PLEASE HELP!!
    8·2 answers
  • Create a group of 3-4 students. Using your cell phone flashlight and the filter, create a "blue" flashlight, "red" flashlight, a
    14·1 answer
  • Positively charged particle A.proton B.neutron C.electron
    13·2 answers
  • Determine the largest intensity w of the uniform loading that can be applied to the frame without causing either the average nor
    13·1 answer
  • A straight wire in a magnetic field experiences a force of 0.026 N when the current in the wire is 1.5 A. The current in the wir
    7·1 answer
  • Two gliders collide on an air track. Glider 1 has a mass of 7.0 kg, and glider 2 has a mass of 4.0 kg. Before the collision, gli
    10·1 answer
  • In what way is a screw similar to an inclined plane?
    10·2 answers
  • A car traveling at 90 m/s can stop in a distance of 110 m. What is the magnitude of the cars acceleration as it slows down?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!