Question

check this please

Answer 1

1. A car that increases its speed from 20 km/h to 100 km/h undergoes ____________________ acceleration.
2. It usually takes more force to start an object sliding than it does to keep an object sliding because static friction is usually ____________________ than sliding friction.
3. In a closed system, the loss of momentum of one object ____________________ the gain in momentum of another object.
4. The universal force that is effective over the longest distances is ____________________.
5. As an object’s temperature increases, the ____________________ at which it radiates energy increases.
6. When a person plucks a guitar string, the number of half wavelengths that fit into the length of the string determines the ____________________ of the sound produced.
7. The law of reflection states that the angle of reflection is equal to the angle of ____________________
8. The region where a magnet's force is strongest is at the_________________________.
9. The magnetic field lines of a bar magnet begin near the magnet’s ____________________.
10. The energy source used to produce most of the electrical energy in the United States is ____________________.


1. Positive
2. Greater
3. is equal to
4. nuclear forces
5. Rate
6. Pitch
7. Incidence
8. Pole
9. South and north pole
10.????????
is this right (:

Answer 2

is there a word bank?

Answer 3

no that is just what i think the answer is :)

Answer 4

oh well the seem right to me

Answer 5

what is 10 ?

Answer 6

prolly fossil fuels

Answer 7

thank you
so what do you think @NoelGreco

Answer 8

o and "What is a medium?"

Answer 9

The only answers I would disagree with are:

#4 This should be gravitational. It may be the weakest of the four fundamental forces but it is still the most effective over very long distances.

#9 I believe this question is asking where the lines begin (ie leave) the bar magnet...which would be the north pole.

#10 Fossil fuels

Answer 10

thank you but how energy is conserved in a heat pump ?