A 0.14 kg bullet traveling at speed hits a 11.9 kg block of wood and stays in the wood. The block with the bullet imbedded in it moves forward with a velocity of 5.5 m/s. What was the velocity (speed) of the bullet immediately before it hit the block (in m/s)

What is the relationship between the wavelength of a wave and it's energy?

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)