Calculate the angular velocity of planet Mercury and its tangential speed around the Sun. Mercury's distance from the sun is 5.7909227 x 10^ 10 m. Mercury's mass is 3.285 × 10^23 kg. Period = 88 days.

How well does the extrapolated value (the slope of the trend line) agree with the accepted value of free-fall acceleration (g = 9.8 m/s2)?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?