The force applies an acceleration in the reverse direction of
29 N = (0.145 kg) <em>a</em> → <em>a</em> = 200 m/s²
and in order to hit the ball back with speed 40.0 m/s, this acceleration is applied over time <em>t </em>such that
200 m/s² = (40.0 m/s - (-40.0 m/s)) / <em>t</em> → <em>t</em> = (80.0 m/s) / (200 m/s²) = 0.4 s
"b. The nucleus is made of
protons and neutrons and has a positive charge" is the only option that is true about the atomic nucleus. The protons give it a positive charge.
Yes the answer is correct
Answer:

Explanation:
= Intensity of unpolarized light = 
= Angle of the filter = 
Intensity of light is given by

The intensity of light detected by the camera is 
You can hear a difference between these two sounds. That is because their pitch isdifferent. Pitch depends on the frequency of a sound wave. ... High sounds have highfrequencies and low sounds have lowfrequencies.