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inysia [295]
3 years ago
13

Describe how an electromagnet can make a motor run.

Physics
1 answer:
irina [24]3 years ago
6 0
An electric motor converts electrical energy into physical movement. Electric motors generate magnetic fields with electric current through a coil. The magnetic field then causes a force with a magnet that causes movement or spinning that runs the motor.
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5. How fast does a 50 gram arrow need to travel to have 40 Joules of kinetic energy?​
qwelly [4]

Answer: v = 40 m/5

Explanation:

40 J = 1/2 (105) v^2

1600 = v^2

v = 40 m/5

7 0
3 years ago
The diameter of a copper wire is thought to be approximately 0.3mm. Which instrument should be used to obtain a more accurate me
erica [24]

Answer:

C

Explanation:

The correct answer should be the micrometer.

<u>The micrometer is an instrument that is capable of measuring the component of an object to very high precision. It is used to obtain accurate measurements in engineering.</u>

<em>In the case of the copper wire, the diameter of 0.3 mm was an approximation and a more accurate measure of the diameter would be obtained by using the micrometer.</em>

The correct option is C.

4 0
3 years ago
Suppose your friend mistakes a yardstick for a meter stick and measures the length of an intersection in your neighborhood. Is t
Vikki [24]

How do you find the uncertainty of a meter stick?

Thus, L =5 . 7 cm measured with a meter stick implies an uncertainty of 0.05 cm. A common rule of thumb is to take one-half the unit of the last decimal place in a measurement to obtain the uncertainty

5 0
3 years ago
Consider a perfectly reflecting mirror oriented so that solar radiation of intensity I is incident upon, and perpendicular to, t
VLD [36.1K]

Answer:

Frad = 2IA/C

Explanation:

see attached file

4 0
3 years ago
One atom of carbon _____. has four electron shells can bond with up to four other atoms forms a special shape called a tetrahedr
UNO [17]

Carbon belong to Group IV of elements; meaning it can bond with 4 Group I atoms such as Hydrogen to form CH4.

The answer is One atom of carbon can bond with up to four other atoms.

5 0
3 years ago
Read 2 more answers
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