An ideal machine has an efficiency of 100%

A bullet is fired vertically into a 1.40 kg block of wood at rest directly above it. if the bullet has a mass of 29.0 g and a speed of 510 m/s, how high will the block rise after the bullet becomes embedded in it?

What is a crumple zone?

The net external force acting on an object is zero. Is it possible for the object to be traveling with a velocity that is not zero if the answer is yes state whether any conditions must be placed on the magnitude and direction of velocity?

Find the work done after the chair moved 4.40m along the ramp

What is the specific heat of the solid phase? If you could just explain to me how I get it, it'd be great

Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C.

A jar of tea is placed in sunlight until it reaches an equilibrium temperature of 31.8 ◦C. In an attempt to cool the liquid, which has a mass of 161 g, 131 g of ice at 0.0 ◦C is added. At the time at which the temperature of the tea is 28.

Pakistan and bangladesh are two countries on the subcontinent

Which theorist proposed that kohlberg's theory has a strong male bias

According to the kinetic theory of gases, the kinetic energy of molecules is proportional to which factor? A. Concentration in moles/liters B. temperature in kelvin