A car is moving with speed V_est - 30 m/s down a straight road. The tires roll w

Question

A car is moving with speed V_est - 30 m/s down a straight road. The tires roll without slipping on the ground and are spinning with angular velocity w = 100 rad/s. With to the ground what is the speed V-op of a point on the very top of the tine (see picture ) Block A of mass M initially moves in the with velocity v. Block B of mass 3M in at rest. The two blocks collide, but do not stick. The Block B moves in the ^+x direction with velocity 0.2 m/k. The surface is. What the momentum of block B after the collation and v? An astronaut lands on a distant and wanes to measure the planet's gravitational acceleration. She takes a 0.02. kg bull out her to a 0.7 m string. She finds that this simple has a two times smaller than when she tested it on Earth. What is the due to gravity this planet in serms of g the acceleration due to gravity at the surface of the Earth? Consider a hypothetical refrigerator that takes 1000 J of heart from a cold reservoir at 100K and ejects 1200 J of heat to a hot reservoir at 300K. Does this violate the 2nd law of thermodynamics? The wave y (x, t) = 2cos (4t -2x) at x = 0, calculate the phase velocity and peak value of transverse velocity.

Explanation / Answer

3a. resultant velocity = V + wr = 30+100r where r is radius

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