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
Sati [7]
2 years ago
12

A balloon contains helium gas. Which applies to the volume of the gas in the balloon when pressure is increased at constant temp

erature?
A.
the volume of the gas increases

B.
the volume of the gas decreases

C.
the average speed of the gas molecules decreases

D.
the total number of gas molecules remains the same
Physics
1 answer:
svetlana [45]2 years ago
8 0

Answer:

the volume of the gas decreases

Explanation:

As a balloon rises through the atmosphere, the air pressure around it decreases and the balloon expands.

Good luck!

You might be interested in
Rank the following compounds in order of decreasing vapor pressure.
liubo4ka [24]
Hello ? What compounds are you referring to ?
3 0
3 years ago
A rock is being twirled in a circle on the end of a string. The string provides the centripetal force needed to keep the ball mo
KonstantinChe [14]

Answer:

No

Explanation:

The force of tension exerted by the string on the rock acts as centripetal force, so its direction is always towards the centre of the circle.

However, the direction of motion of the rock is always tangential to the circle: this means that the force is always perpendicular to the direction of motion of the rock.

As we know, the work done by a force on an object is

W=Fd cos \theta

where

F is the magnitude of the force

d is the displacement of the object

\theta is the angle between the force and the displacement

In this situation, F and d are perpendicular, so \theta=90^{\circ}, therefore cos \theta = 0 and the work done is zero:

W=0

4 0
2 years ago
Photoelectrons with a maximum speed of 8.00 • 106 m/sec are ejected froma surface in the presence of light with a frequency of 6
Andru [333]

The kinetic energy is given by:

K=\frac{1}{2}mv^2

We know the mass and the maximum speed, plugging their values in the expression above we have:

\begin{gathered} K=\frac{1}{2}(9.1\times10^{-31})(8\times10^6)^2 \\ K=2.91\times10^{-17}\text{ J} \end{gathered}

Therefore, the answer is d.

5 0
1 year ago
60 POINTS model how sound produced by a singer is recorded by a microphone and reproduced by a speaker (sound model) WITH RUBIC
Nikolay [14]

Answer:

Explanation: i don't know bro

6 0
2 years ago
A 6.0 m wire with a mass of 50 g, is under tension. A transverse wave, for which the frequency is 810 Hz, the wavelength is 0.40
MrRissso [65]

Answer:

a) t = 0.0185 s = 18.5 ms

b) T = 874.8 N

Explanation:

a)

First we find the seed of wave:

v = fλ

where,

v = speed of wave

f = frequency = 810 Hz

λ = wavelength = 0.4 m

Therefore,

v = (810 Hz)(0.4 m)

v = 324 m/s

Now,

v = L/t

where,

L = length of wire = 6 m

t = time taken by wave to travel length of wire

Therefore,

324 m/s = 6 m/t

t = (6 m)/(324 m/s)

<u>t = 0.0185 s = 18.5 ms</u>

<u></u>

b)

From the formula of fundamental frquency, we know that:

Fundamental Frequency = v/2L = (1/2L)(√T/μ)

v = √(T/μ)

where,

T = tension in string

μ = linear mass density of wire = m/L = 0.05 kg/6 m = 8.33 x 10⁻³ k gm⁻¹

Therefore,

324 m/s = √(T/8.33 x 10⁻³ k gm⁻¹)

(324 m/s)² = T/8.33 x 10⁻³ k gm⁻¹

<u>T = 874.8 N</u>

8 0
2 years ago
Other questions:
  • When forming a bond, an atom that has 3 electrons in its second shell and a filled first shell will?
    9·1 answer
  • Jose is loading his luggage into his car so that he can go to visit his grandmother. He lifts his suitcase up a 10 m staircase i
    14·1 answer
  • Following an inelastic collision, what can kinetic energy be converted into? Check all that apply.
    7·2 answers
  • Electromagnetic waves are different from other types of waves because they can travel through?
    6·2 answers
  • To practice Problem-Solving Strategy 25.1 Resistor Circuits. Find the currents through and the potential difference across each
    11·1 answer
  • When was that last time you cried ? You can tell me
    6·1 answer
  • Describe how personal fitness contributes to physical,mental/emotional,social health
    14·1 answer
  • Present at least one example that illustrates acceleration. Is this a scalar or vector quantity? Explain why. ...?
    7·2 answers
  • A distance-time graph indicates that an object moves 100 m in 4 s and then remains at rest for 6 s. What is
    9·1 answer
  • Why do some "people" still believe that the earth is "flat".
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!