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Semmy [17]
3 years ago
13

1. What are three questions you should ask before joining a club?

Physics
1 answer:
lara [203]3 years ago
7 0

Answer:

what time does it start.

what do I need to join.

what are your expectations.

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What is thermonuclear fusion?​
igor_vitrenko [27]
Thermonuclear fusion is when matter is heated to a high degree
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2 years ago
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At time=0s, the object is at the 21.0-meter position along the roadway. Where is the object at time = 10 s?
Jet001 [13]
B.) 70m is your answer!
4 0
3 years ago
A 3 kg toy car with a speed of 7 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 5 m/s.
Mademuasel [1]

Answers:

kinetic energy lost = 86.4J

Explanation:

let Kf be the kinetic energy after the collision and Ki be the kinetic energy before the collision. let the 3kg car be 1 and 2kg car be 2.

Kf = K1(f) + K2(f)

Ki = K1(i) + k2(i)

loss in kinetic energy = Kf - Ki

                                 = 1/2(3)(2.20)^2 + 1/2(2)(2.20)^2 - 1/2(3)(7)^2 - 1/2(2)(-5)^2

                                 = 12.1 - 98.5

                                 = -86.4 J

therefore, the kinetic energy lost in the collision is 86.4 J.

6 0
2 years ago
__________ occurs when a substance emits light after absorbing light or other electromagnetic radiation of a different wavelengt
LekaFEV [45]

The answer Is C i hope this is helpfull

3 0
3 years ago
Describe an experiment that tests whether all metals are magnetic and identify the independent and dependent variable in your ex
scoray [572]

Answer and Explanation:

NOTE: Magnetism means the magnetic property of a material that causes it to create a magnetic field, hence getting it attracted to a magnet.

EXPERIMENTAL PROCEDURE

1. Use a tape to attach a permanent magnet to the end of a ruler so that the magnet is facing away from the ruler. Don't cover the magnetic surface with the tape. ( Leave the magnet in its decorative casing.)

2. Place your metal objects in a row, and make predictions of which one of them will be attracted to the magnet and which will not.

3. Hold the magnet over each metals, and record which metals are attracted to the magnet. Go back over the

objects that were not affected by the magnet at least one more time to be sure you didn't miss any.

In this experiment, the independent variable is the magnetism of the magnet used. This is the independent variable because it remained unchanged and unaffected by the metals' magnetic properties all through the experiment.

While the dependent variable is the magnetism of the metals used. This is so because the magnetism of these metals varied and also because it is what is been measured in the experiment. Some were attracted to the magnet from very close range while others were attracted even at some centimeters away from the magnet which indicates that those metals have strong metallic properties.

7 0
3 years ago
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