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A 0.66 kg copper rod rests on two horizontal rails 0.64 m apart and carries a current of 50 A from one rail to the other. The coefficient of static friction among rod and rails is 0.46. What is the smallest magnetic field (not necessarily vertical) that would cause the rod to slide?
a) What is the magnitude of B?
b) What is the angle of B from the vertical? (deg)
A small oven has a surface area of 0.26 m2. The insulated walls are 1.3 cm thick with an average thermal conductivity of 0.040 W/moC. What is the rate of heat loss
Two charged particles, Q1 = +4.50 nC and Q2 = -2.70 nC, are separated by 30.0 cm. What is the electrical potential energy of the pair
if you know the temperature of a star how would you find its wavelength? say the temperature of a star is 30000k what
A Ferris wheel with a radius of 8.1 meter rotates at a constant rate, completing one revolution every 45 sec. Determine the direction and magnitude of a passenger's acceleration when at the top of the Ferris wheel
Two cars collide at an intersection. Car A with a mass of 1800kg, is going from west to east, while car B of mass 1400kg, How fast was car A going just before the collision
satellite with an orbital period of exactly 24.0 h is always positioned over the same spot on earth. this is known as a
The following objects are released simultaneously from rest at the top of a 1.50m long ramp inclined at 3.50? to the horizontal: Which wins the race
You are standing at x=8.0km Lightning bolt 1 at x=0km and lightning bolt 2 at x=13.0 km. If your assistant didn't see the flashes at the same time, what is the time difference between the two flashes
A golf ball is sent flying at an angle of 35 degrees for a total flight time of 5 seconds. Landing at the same level from which it took off, what was the horizontal distance in feet traveled by the ball
The amplitude of an oscillator decreases to 88.8 of its initial value in 20.5. What is the value of the time constant
A small radio operates on 3.00 V and has a resistance of 15 coulomb. At what rate does the radio use electric energy.
Under the influence of its drive force, a snowmobile is movingat a constant velocity along a horizontal patch of snow. When thedrive force is shut off, the snowmobile coasts to a halt.
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