You release a pendulum of mass 1kg from a height of 0.75 m. 1. if the pendulum loses 18% of its initial energy by the time it reaches the bottom how fast is it going when it reaches the bottom?

2. if the pendulum loses another 7% of its remaining energy by the time it reaches the other side, how high up does it go?

When an object is heated it contracts. a. true b. false

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity