A 4 kg. block of copper is removed from a freezer where its temperature was maintained at -23 Co . How much heat does the copper absorb as it is warmed to -3.1 Co ? (The specific heat capacity of copper is 390fraction numerator J over denominator k g space C to the power of ring operator end fraction)

An object has a weight of 500 on earth what is the mass of this object

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

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: