A 21 kg child is riding a 5.9 kg bike with a velocity of 4.5 m/s to the northwest.
a. What is the total momentum of the child and the bike together?
b. What is the momentum of the child?
c. What is the momentum of the bike?

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.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Select the correct lewis structure for fluorine which is group 7a element?