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Q. Two parallel plates, each with an area of 100 cm^2 , are given charges of equal magnitudes 8.9 X 10^-7 C but opposite signs. The electric field within the dielectric material filling the space between the plates is 1.4 X 10^6 V/m. (a) Calculate the dielectric constant of the material. (b) Determine the magnitude of the charge on each dielectric surface.
Q. For the normal force in the figure to have the same magnitude at all points on the vertical track, the stunt driver must adjust the speed to be different at different points. Suppose, for example, that the track has a radius of 3.5 m and that the driver goes past point 1 at the bottom with a speed of 17 m/s. What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom?
The length of an air column that produces a strong resonance in a cylinder is 0.18m, what is the frequency of the tuning fork being used .
How much force, in Newtons, is needed to accelerate a truck with a mass of 1500 kilograms from a full stop to 40 m/s in 10 seconds if the rate of acceleration is constant.
A 73 kg parachutist descends during a vertical height of 420 m with constant speed. Find the increase in entropy produced by the parachutist; assume the air temperature is 21°C.
How numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k boost in temperature?
A 0.12-kg ball is placed in a shallow wedge with an opening angle of 120°, as shown in the figure. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless. Find contact force o..
Two stationary positive point charges, charge 1 of magnitude 3.65 and charge 2 of magnitude 1.80 , are separated by a distance of 58. An electron is released from rest at the point midway between two charges, and it moves along the line connecting..
A person walks 21° north of east for 3.30km. How far would another person walk due north and due east to arrive at the identical location.
The Hall voltage across a conductor in a 55 magnetic field is 1.9 . When used with the same current in a different magnetic field, the voltage across the conductor is 3.
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
How to generate a constant deceleration
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
A 3 kg object id released from rest at a height of a 5 meter curved frictionless ramp. At the foot of the ramp is a spring force constant of k= 400n/m the object slides down the ramp and onto the spring compressing it to the distance x before comi..
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