What are the two forces that keep a pendulum swinging?

the length of the string and the mass of the bob

length and tension of the string

tension and gravity

length of the string and gravity

Acar is going 5m/s around a bend with a radius of 10m/s why is the accelerant?

Which of the following correctly describes the early view of catastrophism?

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2