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
Ainat [17]
3 years ago
14

In an electric motor, periodically changing the direction of current in the electromagnet can cause the axle to spin because

Physics
1 answer:
Oxana [17]3 years ago
6 0
It is D. Just took the quick-check. 100% right
You might be interested in
Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble
Neporo4naja [7]

Answer:

2.4 m/s

Explanation:

Momentum is conserved.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(0.08 kg)(0.5 m/s) + (0.05 kg)(0 m/s) = (0.08 kg)(-0.1 m/s) + (0.05 kg) v

0.04 kg m/s = -0.08 kg m/s + (0.05 kg) v

0.12 kg m/s = (0.05 kg) v

v = 2.4 m/s

4 0
3 years ago
Which material is more closely related to the styrofoam? a. heat exchanger b. diffuser c. insulator d. electrical conductor
nirvana33 [79]

The material that is more closely related to the Styrofoam insulator.

Styrofoam is the term that is used for polystyrene foam in a trademark form. It is a petroleum-based plastic.

Keeping something warm includes the stopping of the transfer of heat from one object to another. This is how insulation works.

Styrofoam is an insulator, which means it'll help keep the heat from the environment out of your cooler. However, you'll still need cooling agents (like ice packs) to make the cooler cold in the first place.

Styrofoam is usually made mostly of air, which means it is a poor conductor of heat, but an excellent convector. It traps the air in small pockets, which blocks the flow of heat energy. This reduces both conduction and convection and makes Styrofoam a good insulator.

To learn more about Styrofoam here

brainly.com/question/21369568

#SPJ4

8 0
2 years ago
a moving cart hits a spring, traveling at 5.0 m/s at the time of contact. at this instant the cart is motionless by how much is
viva [34]
This state of motionlessness occurs because all of the kinetic energy in the car is absorbed by the spring in the form of elastic potential energy. The mathematical representation is:
1/2 mv² = 1/2 kx²
25m = kx², where m is the mass of the cart, k is the spring constant and x is the spring's extension.
4 0
3 years ago
Đổi 20độC = ? độ F =? Độ k
san4es73 [151]

Answer:

IDC

Explanation:

I DON'T UNDERSTAND........

7 0
3 years ago
Three systems of two charged particles are shown below. All the particles have the same mass,
Len [333]

Answer:D

Explanation:

5 0
3 years ago
Other questions:
  • What is the defenition of mass
    10·2 answers
  • Select the correct answer.
    8·1 answer
  • What is the average velocity of a dragster that starts from rest at the starting line and finishes a race at 2600 m/s in 12 seco
    7·1 answer
  • A 65-cm segment of conducting wire carries a current of 0.35
    12·2 answers
  • What equation relates mechanical energy, thermal energy, and total energy when there is friction present in a system?
    11·1 answer
  • Julianna blows air onto the balloon to inflate it what can be known about the atoms of the air
    13·2 answers
  • Question 15
    14·1 answer
  • A scientist in Northern California is studying the tree rings of a very old redwood tree. He notices that the oldest tree rings
    11·2 answers
  • A 2kg body is moving a long a horizontal circular path of radius 2m with constant speed of 6m/s . what is the magnitude of the f
    7·1 answer
  • Which wave has highest energy?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!