The door is 1980 mm high, 760 mm wide, 5 cm thick, and the density of steel is 7.85 gcm3. what is the mass of the door? 3 . 99 o 76 ao-0s * 7.35 o 9/ h 11. given that the heat capacity of steel is 502 jkg'k-1, determine the amount of energy required to reach the melting point of steel at 3700 c i. 09 12. given that the latent heat of fusion of steel is 251 kjkg1, determine the energy required to change the steel from the solid state to the liquid state at 3700 c 0-14 x10

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Which subatomic particle has a negative charge

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.