A truck has a momentum of 100kgm/s. A car has a momentum of 50kgm/s. A motorcycle has a momentum of 30 kgm/s.
What is the net momentum (Pnet)?

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?