Ahorizontal spring has one end firmly attached to a wall and the other end attached to a mass. the mass can slide freely on a smooth, horizontal surface with no friction. when the mass is at the x = 0.020-m position so that the spring is stretched by 0.020 m, what is true about the force exerted on the mass by the spring?

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.