Homework Statement
Consider a rectangular block of metal of height A, width B, and length C, as shown in the figure below. If a potential difference V is maintained between the two A B faces of the block, a current IAB is observed to flow. Find the current that flows if the same potential...
Homework Statement
A 16 g CD with a radius of 6.0 cm rotates with an angular speed of 42 rad/s.
(a) What is its kinetic energy?
Homework Equations
k=1/2Iw^2
The Attempt at a Solution
k=1/2(0.016x0.0036)(1764)=0.05 J
Homework Statement
Two 75.0 kg hockey players skating at 6.15 m/s collide and stick together. If the angle between their initial directions was 130°, what is their speed after the collision? (Let the motion of player 1 be in the positive x-direction and the motion of player 2 be at an angle of...
Homework Statement
A 93 kg astronaut and a 1500 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.16 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. What...
is Fr where i am supposed to insert the frictional force? because i did and I still got the problem wrong but equation seems right how do i find the frictional force isn't it fk=ukN?
Homework Statement
A 1.80 kg block slides on a rough, horizontal surface. The block hits a spring with a speed of 1.95 m/s and compresses it a distance of 14.0 cm before coming to rest. If the coefficient of kinetic friction between the block and the surface is µk = 0.560, what is the force...