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A 21.00 kg block is pushed up a frictionless inclined plane that makes an angle of θ = 31o with the horizontal direction. What force is required to move the block with constant speed? Suppose that the force is parallel to the surface of the plane.
A toriod with a square cross-sectional area A = a x a m2 , has an inner radius R and and outter radius R+a. What are the bound currents in the Toroid
In an LC circuit where L = 12 mH and C = 30 μF with anelectro magnetic oscillation the current amplitude is 2.5mA. find the natural frequency and the period of the oscillation
a tow truck is pulling a car out of a ditch by means of a steel cable y 2.0 x 1011 nm2 that is 8.87 m long and has a
A spherical mirror is polished on both sides. When the convexside is used as a mirror, the magnification is +1/4. What is the magnification when the concave side is used as a mirror, the object remaining the same distance from the mirror?
A block is pushed up a 20 degree friction-less incline with an initial speed 12.0 m/s. How high up the plane does the block slide before coming to rest
An air-filled parallel-plate capacitor has a capacitance of1pF. The plate separation is then doubled and na waxdielectric is inserted, completely filling the space between theplates. As a result, the capacitance becomes 2 pF. Findthe dielectric const..
The potential difference across a cell membrane form outside to inside is initially at -90 mV (when in its resting phase). How many ions move through the membrane
A 78.3?kg bungee jumper is enjoying an afternoon of jumps. The jumper's first oscillation has an amplitude of 10.3m and a period of 4.75s. find the spring constant of the bungee cord
An 39-turn circular coil of radius 22.1 cm carries a current of 3.37 A. What is the strength of the magnetic field
You are pulling a suitcase through the airport at a constant speed. the handle of the suitcase makes an angle of 53 degrees with respect to the horizontal direction. what is the force of friction acting on the suitcase
A proton is released from rest in a uniform electric field of magnitude 421 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in..
A 15.0 g block with a charge of +6.00 10-5 C is placed in an electric field = (3000 - 600 ) N/C. What is the electrostatic force on the block
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