Compare the gravitational force on a 33 kg mass at the surface of the earth (with ra-dius 6.4 × 106 m and mass 6 × 1024 kg) with that on the surface of the moon with mass81.3 me and radius 0.27 re. 1what is the force on the earth? answer in units of n.

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm

Which atomic model is missing from this set

A12-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. the clay sticks to the block. after impact, the block slides 7.5 m before coming to rest. if the coefficient of friction between the block and the surface is 0.65, what was the speed of the clay immediately before the impact?