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A capacitor with air between its plates is charged to 100 V and then disconnected from the battery. When a piece of glass is placed between the plates, the voltage across the capacitor drops to 30 V. What is the dielectric constant of the glass? (Assume the glass completelyfills the space between the plates.)
Vector A ? has magnitude 10.0m m and vector B ? has magnitude 18.0m m . The scalar product A ? ?B ? is 90.0m 2. What is the magnitude of the vector product
A mass m is lowered gently onto a vertical spring of length L with spring constant k until it just touches the spring. Let y be the distance the spring is compressed and v be the velocity of the mass. When the mass is released from rest, the equation..
q1. what is the acceleration of two falling sky divers mass 109.0 kg including parachute when the upward force of air
A catapult launches a rock at at 50 degree angle with respect to the horizontal. Find the maximum height attained if the speed of the rock at its highest point is 26m/s
A piston, A, as shown below, has a diameter of 0.61 cm. A second piston, B has a diameter of 3.7 cm. Determine the force, F, necessary to support 500.0 N weight in the absence of friction.
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
suppose that the position vector fot a particle is given as a function of time by r(t) =x(t)i + y(t)j, with x(t) = at+b and y(t) = ct^2 + d, where a= 1.50m/s, b =1.25m, c= 0.123m/s^2, and d =1.02m
the weight of a star is usually balanced by two forces the gravitational force acting inward and the force created by
a uniform electric field of 1.0 nc is set up by a uniform distribution of charge in the xy-plane. what is the electric
What impulse Ft should be supplied to bring the ball to rest? If the ball is stopped in 0.03 s, what is the average force of the ball on the catcher's hand.
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
You are 1.9 m tall andstand 3.4 m from a planemirror that extends vertically upward from the floor. On the floor1.6 m in front ofthe mirror is a small table, 0.85 mhigh. What is the minimum height the mirror must have for you to beable to see the top..
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