The law of reflection states that the angle of incidence and the angle of reflection are always a. greater than 45 degrees each. b. less than 45 degrees each. c. equal in measure. d. different in measure

Option (c)

Explanation:

There are two laws of reflection.

1. The angle of incidence is equal to the angle of reflection.

2. the incident ray, reflected ray and the normal all lie in the same plane.

a person with a mass of 106kg has a weight of 1060n

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.