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
Natalija [7]
2 years ago
9

A

Physics
1 answer:
ale4655 [162]2 years ago
3 0

m = 43.2 kg

Explanation:

volume of sphere = (4/3)pi(r)^3

= (4/3)(3.14)(2 m)^3

= 33.5 m^3

density = mass/volume

or solving for mass m,

m = (density)×(volume)

= (1.29 kg/m^3)(33.5 m^3)

= 43.2 kg

You might be interested in
A student grabs a piece of paper and tears it from the middle. Which statement best explains the forces involved?
PolarNik [594]

Answer:

b. The normal force between the molecules of the paper is overcome by the contact force of the hands.

Explanation:

The paper molecules are held together by a weak bond. When the student holds the paper on both sides with the center of the paper in between, the student applies two equal forces in the opposite direction of the paper making the paper molecules weaken and separate.

3 0
2 years ago
Read 2 more answers
A rope has one end tied to a vertical support. You hold the other end so that the rope is horizontal. If you move the end of the
Strike441 [17]

Answer:

c. 2 m/s

Explanation:

The relationship between speed, frequency and wavelength of a wave is given by:

v=f \lambda

where

v is the speed of the wave

f is its frequency

\lambda is the wavelength

For the transverse wave in this problem, we have:

f = 4 Hz is the frequency

\lambda=0.5 m is the wavelength

Substituting these numbers into the equation, we find the speed of the wave:

v=(4 Hz)(0.5 m)=2 m/s

7 0
3 years ago
What conclusions can you draw about an object that either has an OVERALL negative charger OR an OVERALL positive charge?
sveticcg [70]

Answer:

The object is also positively charged because same or alike charges repel

Explanation:

6 0
3 years ago
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor di
Marrrta [24]

Answer:

2625 m deep

Explanation:

Let the sound speed in sea water be 1500 m/s. If he hears the echo 3.5s after the strike, then the sound would have traveled a distance of 1500 * 3.5 = 5250 m to the bottom and back. This would mean the ocean is 5250 / 2 = 2625 m deep.

5 0
3 years ago
What is net force?
drek231 [11]
The answer is d my friend :)
5 0
2 years ago
Read 2 more answers
Other questions:
  • A star of mass 2.0 ✕ 1029 kg that is 1.8 ✕ 1020 m from the center of a galaxy revolves around that center once every 2.2 ✕ 108 y
    7·1 answer
  • If the graph shown is a position-time graph of an object moving at constant velocity, what is the velocity of the object? Assume
    8·1 answer
  • I need help calculating Velocity,
    6·2 answers
  • Can someone list two non-examples of volcano formations/eruptions?
    8·1 answer
  • A circular test track for cars has a circumference of 3.5 kmkm . A car travels around the track from the southernmost point to t
    11·1 answer
  • What is the definition of a "revolution"? user: which planet is closest to the sun?
    10·2 answers
  • A projectile is launched from ground level at angle u and speed v0 into a headwind that causes a constant horizontal acceleratio
    12·1 answer
  • 10. A 90 kg box is sliding across a surface at a constant velocity while experiencing a rightward applied
    13·2 answers
  • A car is traveling along a straight road at a velocity of +30.0 m/s when its engine cuts out. For the next 1.79 seconds, the car
    7·1 answer
  • Can someone help me and put them in order, I numbered them down so it can be easier to say.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!