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4 years ago

What type of device uses an electromagnet to convert electrical energy into mechanical energy?

Physics

2 answers:

irinina [24]4 years ago

6 0

A motor uses an electromagnet to convert electrical energy into mechanical energy.

galben [10]4 years ago

5 0

Answer: The correct answer is "motor".

Explanation:

Electric motor: It is the device which converts the electrical energy into the mechanical energy.

When the current is flowing through the wire then there will be magnetic field around the wire.

Both magnetic field and the electric field are applied in the motor. So, there will be electric force and the magnetic force.

Electricity can be used to move magnet. The electric motor uses electricity in this way. It generates the magnetic field with the electric current flowing through the coil. This magnetic field helps in moving the magnet that runs the motor.

Therefore, motor is a device which uses an electromagnet to convert electrical energy into mechanical energy.

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3 years ago

Read 2 more answers

N4M.6 A board has one end wedged under a rock having a mass of 380 kg and is supported by another rock that touches the bottom s

Hitman42 [59]

Answer:

it is safe to stand at the end of the table

Explanation:

For this exercise we use the rotational equilibrium condition

Στ = 0

W x₁ - w x₂ - w_table x₃ = 0

M x₁ - m x₂ - m_table x₃ = 0

where the mass of the large rock is M = 380 kg and its distance to the pivot point x₁ = 850 cm = 0.85m

the mass of the man is 62 kg and the distance

x₂ = 4.5 - 0.85

x₂ = 3.65 m

the mass of the table (m_table = 22 kg) is at its geometric center

x_{cm} = L/2 = 2.25 m

x₃ = 2.25 -0.85

x₃ = 1.4 m

let's look for the maximum mass of man

m_{maximum} = $\frac{ M x_1 -m_{table} x_3}{ x_2}$

let's calculate

m_{maximum} = $\frac{ 380 \ 0.85 - 22 \ 1.4}{3.65}$ (380 0.85 - 22 1.4) / 3.65

m_{maximum} = 80 kg

we can see that the maximum mass that the board supports without turning is greater than the mass of man

m_{maximum}> m

consequently it is safe to stand at the end of the table

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3 years ago

What is the quantity of matter that an object contains called? A. mass B. weight C. volume D. density

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The answer would be A) Mass

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3 years ago

A package of mass 9 kg sits at the equator of an airless asteroid of mass 4.0 1020 kg and radius 5.7 105 m. we want to launch th

pashok25 [27]

Grav. Potential at surface of the asteroid:

V = - G.Ma./ R
V = (-) 6.67^-11 x 4.0^20kg / 5.7^5m .. .. V = (-) 4.681 *10 ^5 J/kg

The GPE of the package on the asteroid = 9.0kg x (-) 4.681*10^5J/kg = (-) 4.21 ^5 J

This is the amount of energy required to come back the package to infinity.

The total energy that needs to be transported to the package:

GPE + KE(for 187m/s)
Total energy required E = 4.21*10^5 + (½x 9.0kg x 168²) = 5.48 * 10^5 J

When the required energy is to be complete by releasing a compressed spring,
Elastic PE stored in spring = ½.ke² = 5.48 * 10^5 J where e = compression distance

e = √ (2 x 5.48*10^5 / 2.1*10^5)

e = 2.28 m

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4 years ago