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
mr_godi [17]
3 years ago
10

Question 10 of 10

Physics
1 answer:
rewona [7]3 years ago
6 0

Answer: D

Explanation:

You might be interested in
A disk of a radius 50 cm rotates at a constant rate of 100 rpm. What distance in meters will a point on the outside rim travel d
Iteru [2.4K]

Answer:

A point on the outside rim will travel 157.2 meters during 30 seconds of rotation.

                         

Explanation:

We can find the distance with the following equation since the acceleration is cero (the disk rotates at a constant rate):

d = v*t

Where:

v: is the tangential speed of the disk

t: is the time = 30 s  

The tangential speed can be found as follows:

v = \omega*r

Where:

ω: is the angular speed = 100 rpm

r: is the radius = 50 cm = 0.50 m

v = \omega*r = 100 \frac{rev}{min}*\frac{2\pi rad}{1 rev}*\frac{1 min}{60 s}*0.50 m = 5.24 m/s    

Now, the distance traveled by the disk is:

d = v*t = 5.24 m/s*30 s = 157.2 m

Therefore, a point on the outside rim will travel 157.2 meters during 30 seconds of rotation.

I hope it helps you!

3 0
2 years ago
A skateboarder with a mass of 45 kilograms is riding on a skateboard with a mass of 2.5 kilograms. What should be the velocity o
klasskru [66]
So momentum is just velocity times mass, this means Momentum = Velocity x Mass.
We can rearrange this to be Velocity = Momentum/Mass.

Since we know momentum and mass we can now solve.

Velocity = 264/(45+2.5)
              = 5.56 m/s
5 0
3 years ago
Read 2 more answers
If I push on the wall with 75 Newtons of force, the wall will push back with __
Scilla [17]

Answer: 0

Explanation:

75 newtons will push back canceling it out make it 0

7 0
3 years ago
How are density and pressure related related to each other?
lawyer [7]

Answer:

The pressure is the measure of force acting on a unit area. Density is the measure of how closely any given entity is packed, or it is the ratio of the mass of the entity to its volume. The relation between pressure and density is direct. Change in pressure will be reflected in a change in density

6 0
3 years ago
What minerals attracts iron nails?
Helga [31]
A lodestone is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through lodestones.
3 0
3 years ago
Other questions:
  • As shown in the figure below, a bullet is fired at and passes through a piece of target paper suspended by a massless string. Th
    15·1 answer
  • What was the vertical component of her acceleration during push-off? the positive direction is upward?
    9·1 answer
  • Contrasting the Doppler effect with shock waves, the one that requires the faster source is?
    9·2 answers
  • Which candidate won an election that was ultimately decided by the supreme court
    15·1 answer
  • Describe why we cannot see details on the surface of Mars.​
    15·2 answers
  • What is the free-fall acceleration on a planet where the period of a 1.07 m long pendulum is 2.02 s?
    15·1 answer
  • Does the car traveling the longest time always travel the greatest distance? Why or why not?
    10·1 answer
  • During the course of a demonstration the professor is called away. When he returns he finds a beaker of water that was at room t
    10·1 answer
  • Electromotive force in a circuit;
    12·1 answer
  • what is the thickness of the central portion of a thin conveying lens can be determined very accurately by using (a) vernier cal
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!