A copper block rests 30.0 cm from the center of a steel turntable. The coefficient of static friction between block and surface is 0.53. The turntable starts from rest at t=0 and rotates with a constant angular acceleration of 0.50 rad/s2. When will the block begin to slip? (8.3 s)

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?