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A compass needle in a uniform magnetic field of 0.25 T experiences a torque of 0.030Nm when it points in a direction 45 o away from the direction of the field. What is the magnitude of the needle's magnetic moment? ( A* m2)
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. Calculate the buoyant force exerted by the water on the sphere
A 50 kg projectile is fired over level land at an angle of 30 degrees above the horizontal with a muzzle velocity of 210 m/s. At the highest point in its trajectory it explodes into two fragments, one of twice as much mass as the other. The less m..
A motorcyclist heads due north at 20.0 m/s. At a fork in the road, she veers right, ending up with speed 16.0 m/s directed 30° east of north. Find the change-in-velocity vector in component form
Consider a thick spherical shell with total charge Q, inner radius R(i), and outer raduis R(o). Within the shell, charge is not distributed uniformly: the volume charge density p(r) is proportional to r^-2.
At the start of a trip, a driver adjusts the absolute pressure in her tires to be 2.51 x 105 Pa when the outdoor temperature is 277 K. find the air temperature in Kelvin inside the tires at the end of the trip
In the figure, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2.1 m and then collides with stationary block 2, which has mass m2 = 5m1. After the collision, block 2 slides into a region where the coefficient of kinetic ..
Two capacitors C1 = 5.6 ?F, C2 = 13.7 ?F are charged individually to V1 = 16.4 V, V2 = 6.1 V. Calculate the final potential difference across the plates of the capacitors once they are connected
The treasure map in the figure gives the following directions to the buried treasure, Which direction should you go to reach the treasure and How far should you go to reach the treasure
Two circuits contain an emf produced by a moving metal rod, like that shown. The speed of the rod is the same in each circuit, other than the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
A student sits on a freely rotating stool holding two dumbbells, each of mass 3.02 kg, Find the new angular speed of the student
A bag of cement of weight 325 N hangs from three wires, find the tensions in the wires
The suspension system of your 1200 kg car has a natural oscillation frequency of 2.00 Hz without functioning shock absorbers. The shock absorbers provide critical damping to the system. Along a worn section of concrete highway you notice concrete joi..
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