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One end of an iron rod 40 cm long and 3.3 cm in diameter is in ice water, the other in boiling water. The rod is well insulated so no heat is lost out the sides.
What is the heat-flow rate along the rod?
H=____________________W
At t=0 a grinding wheel has an angular velocity of 25 rad/s. It has a constant angular acceleration of 35.0 rad/s^2 until a circuit breaker trips at time t = 2.10 s. From then on, it turns by an angle 431 rad as it coasts to a stop at constant ang..
which is basically a diskshaped grindstone of mass 1.2 kg and radius 7.30 cm which operates at 700 rev/min. When the power is shut off, you time the grindstone and find out it takes 39.0 s for it to stop rotating.
Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 218 N forces are in the positive direction.)
500 J of work are completed to compress the gas while, in the same process, 1400 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules.
A 0.25 m long wrench is placed around a bolt and a 20 N force is applied halfway along the wrench at an angle of 30 degrees, What is the torque (in Nm) applied to the bolt from this force
Suppose you wish to make a solenoid whose self-inductance is 1.6 mH. How many turns of wire are needed
How much current is contained within the width of a thin ring concentric with the wire if the ring has the radial width of 12.0 µm and is at a radial distance of 1.2 mm.
A mass attached to a spring stretches it 2.5 cm from equilibrium. What is the angular frequency of the oscillation
A massive starship with rest mass of 8x10^11 kg has a relavistic momentum of magnitude 5x10^20 kg m/s
Two speakers, one straight behind the other, are each generating a 285 Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Suppose that the s..
what speed does the rock have as it strikes the ground?
A photon is scattered 60.0° during a collision with an electron, which is initially at rest and gains a speed of 6.00× 106 m/s during the collision
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