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vesna_86 [32]
2 years ago
7

haun wants to enter the science fair at his school. he has a list of ideas for his project. which questions could be answered th

rough scientific investigations. check all that apply
Physics
1 answer:
Allisa [31]2 years ago
6 0

Correct Answer:

- Does pressure have an effect on the volume of a gas?

- Which brand of soap is the best for cleaning grease off dishes?

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PHYSICS, WORTH 10 POINTS!
11Alexandr11 [23.1K]

Answer:

Magnetic field lines can be drawn by moving a small compass from point to point around a magnet. At each point, draw a short line in the direction of the compass needle. Joining the points together reveals the path of the magnetic field lines.

Explanation:

5 0
3 years ago
What might cause matter to change states
k0ka [10]
Temperatures can cause matter to change state.
4 0
3 years ago
Which of the following waves travel at the greatest speed
NeTakaya
HEY mate here your answer

p waves travel at the greatest speed and these waves can travel at solid and liquid also. p waves means primary waves.
4 0
3 years ago
A 0.300 kg ball, moving with a speed of 2.5 m/s, has a head-on collision with at 0.600 kg ball initially at rest. Assuming a per
FrozenT [24]

Answer:

1.25 m/s

Explanation:

Given,

Mass of first ball=0.3 kg

Its speed before collision=2.5 m/s

Its speed after collision=2 m/s

Mass of second ball=0.6 kg

Momentum of 1st ball=mass of the ball*velocity

=0.3kg*2.5m/s

=0.75 kg m/s

Momentum of 2nd ball=mass of the ball*velocity

=0.6 kg*velocity of 2nd ball

Since the first ball undergoes head on collision with the second ball,

momentum of first ball=momentum of second ball

0.75 kg m/s=0.6 kg*velocity of 2nd ball

Velocity of 2nd ball=0.75 kg m/s ÷ 0.6 kg

=1.25 m/s

4 0
3 years ago
In some areas, farmers have installed windmills to generate electricity to run the farm. Some are generating a surplus of electr
Natalija [7]
The statement that best describes how the windmill technology benefits the environment is this: WINDMILLS DO NOT POLLUTE THE ENVIRONMENT.
Constructing a windmill involves harnessing the power of the wind to generate electricity. This type of electricity generation has no side  effects whatsoever. It is environmental friendly and does not pollute the environment. 
6 0
3 years ago
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