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The coil of a generator has a radius of 0.17 m. When this coil is unwound, the wire from which it is made has a length of 9.00 m. The magnetic field of the generator is 0.20 T, and the coil rotates at an angular speed of 32 rad/s. What is the peak emf of this generator?
The classroom has a volume of about 100 m3. The pressure is atmospheric and the temperature is 75 ºF. What is the rms speed of the oxygen molecules
A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. By what factor does the moment of inertia change
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, What is the compressional strain of the humerus
A wire of length L carries a current i in the positive direction of an x axis through a magnetic field = By(j hat) + Bz (k hat). In unit-vector notation, what is the magnetic force on the wire? (Use any variable or symbol stated above as necessary.)
question 40 g of copper pellets are removed from a 460degc oven and immediately dropped into 100 ml of water at 18degc
An elevator is accelerating upward at 1.8m/s^2. Someone is standing on a bathroom scale in the elevator, and it reads 180lb. calculate the person's true weight
A 1.8-kg block slides down a fixed, rough curved track. What is the change in mechanical energy of the block coused by the force of friction during this descent
Two non-conducting infinite planes of uniform surface charge ?1 = 13.11 µC/m2 and ?2 = ?3.5 µC/m2 are parallel to each other and d = 0.129 m apart, What is the electric field outside the planes, at A
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
Sketch a free body diagram for the hot air balloon. When the burner is turned on what force is required to cause an upward acceleration of 5m/s squared?
It takes an elevator 3.4 minutes to raise a vehicle with a mass of 366 kg from the floor to a height of 7 meters. What size (power) motor (in watts) does it take to do the job
Think about Galileo's inclined plane experiments. If a metal marble rolls 15 cm in the first unit of time, how farwill it roll in the third unit of time?
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