What process is a method of heat transfer but does not contribute significantly to heating the surface or atmosphere of the earth?
a) conduction
b) convection
c) insulation
d) radiation

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

Apossible explanation for a set of facts that can be tested by further investigation is called

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball