Vector a has components ax = 2 cm, ay = 3 cm, and vector b has
components b, = 4 cm, b, = -2 cm. find
(a) the components of the vector sum a + b

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative