<span>Kinetic energy is energy that a body possesses by virtue of being in motion.
Think of a windmill...
Windmills use the winds energy in order to spin and in doing so creates energy for other things to be powered.
</span>
Answer:
16
Explanation:
solution:
by taking the ratio of the energy E_n,be of the nth orbit of a beryllium atom
Z_be=4 to the energy E_n,h of the nth orbit of a hydrogen (Z_h=1) atom gives
E_n,B/E_n,H=-(2.18*10^-18)*Z^2_BE/-(2.18*10^-18)*Zh^2/n^2
=Z^2_BE+/Z^2_H
=(4)^2/(1)^2
= 16
Answer:
it depends if the charged bodies have the same charge repulsion will occur if they have different charges they will attract
Answer:
C. 233 km/h
Explanation:
Ground speed = air speed + wind speed
250 km/h = v + 17 km/h
v = 233 km/h
Answer:
In order to hit the same point with the second ball, you should throw it at an angle of 18° above the horizontal.
Explanation:
Horizontal reach formula for projectiles tells us
where 
is the initial velocity and 
the angle above the horizontal.
Since for both shots the reach must be the same, we have
.
