Answer:
C=F×W
so, W=C/F
Explanation:
frequency=F
wavelength=W
speed of light =C in that medium
F = ma
F = force
m = mass
a = acceleration
4.2 m/s = a
70 kg = m
F = ?
F = 4.2*70
F = 294 Newtons
Answer would then be : Force = 294 N
Answer:
B. The image is right-left reversed and about as far away from the mirror as the reflected object.
Explanation:
A plane mirror is used in several ways in our life, from the mirror that we have on the bathroom to the mirrors we use on cars, the main difference is that the mirror reflects the image reversed on the Vertical axis, which means that the left is the right and the right is the left, a mirror also protrays objects at a certain distance, about as far away from the mirror as the reflected object but they are actually closer in real life.
Answer:
3.26 m
Explanation:
change in kinetic energy = change in potential energy
h = (8^2)/ 2*9.81 = 3.26 m