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A ball of mass 0.3 kg at the end of a rigid rod is undergoing circular motion in a circle of radius 0.5 m. The angular motion of the ball is described by the function, ?=A+B t^2?C t^4, where A=?/3 B = 3rad/s^2 C = 2rad/s^4
A) Find the angular speed as a function of time.
B) Find the angular acceleration as a function of time.
C) Find the net force on the ball at time t= 3 s.
An object weighs 475 "grams" in air and 345 "grams" when immersed in water. what is the volume of the object
a 1250 kg car is traveling around a banked curve at a speed of 23.5 m/s. the curve is banked 24 degrees to the horizontal. draw a free body diagram for the car, including all forces acting on it. clearly label and name each force
The magnitude of the electrostatic force between two identical ions of mass 1.224×10-25 kg that are separated by a distance of 6.50 nm is 1.770×10-9 N. Calculate the electric field at the site of each ion
A 0.16-kg ball on a stick is whirled on a vertical circle at a constant speed. Find the tension in the stick
Your dog is running around the grass in your back yard. He undergoes successive displacements 3.37 m south, 8.45 m northeast, and 13.3 m west. What is the resultant displacement?
Suppose that a block of mass m = 9.0 kg moving with speed V is behind a block of mass M = 27 kg and speed of 0.5 m/s, How much kinetic energy of the blocks is lost due to the collision
Two charges, -2.2 microCoulombs and -4.8 microcoulombs, are located at (-0.65m, 0) and (0.65,0), respectively. compute the location of the point where the electric field is zero
Note down that since each oscillator is attached to two "springs", and each "spring" is half the length of the interatomic bond, the effective interatomic spring stiffness for one of these oscillators is times estimated value given above.
a frictionless pulley which can be modeled as a 0.80 solid cylinder with a 0.30 m radius has a rope going over it. The tension in the rope is 10 N on the right side and 12 N on the left side. What is the angular acceleration of the pulley.
A spaceship with rest mass m0 is traveling with an x-velocity V0x=+4/5 in the frame of the earth. what is the energy of the photon torpedo in the frame of earth
An electron and a proton are initially very far apart (effectively an infinite distance apart). which is the change in the electric potential energy
A proton with a velocity in the positive x-direction enters a region where there is a uniform magnetic field B in the positive y-direction, The electric field should be in the...which direction
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