Aphysics major is cooking breakfast when he notices that the frictional force between his steel spatula and his teflon frying pan is only 0.200 n. knowing the coefficient of kinetic friction between the two materials, he quickly calculates the normal force. what is it? 500 n

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.