A particle including a spring is moving in the horizontal ring without friction. The radius (R) of the ring is 0.75 m. If the speed of the particle considers to be zero at point A and 2 m/s at point B, calculate the unstretched length of the spring. (the mass of particle=3 kg, the constant of spring=21 N/m).

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

Aphysical change is a change in the size, shape,, or stafe of matter true or false

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.