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Q1. Two 18 cm diameter charged disks face each other, 25 cm apart. Both disks are charged to - 30 nC. What is the electric field strength at the midpoint between two disks?
Q2. A small object with a mass of 420 mg carries a charge of 35.0 nC and is suspended by a thread between the vertical plates of the parallel-plate capacitor. The plates are separated by 3.00 cm. If the thread makes an angle of 19.0° with the vertical, what is the potential difference between the plates?
A rocket for use in deep space is to be capable of boosting a total load (payload plus the rocket frame and engine) of 3.15 metric tons to a speed of 10 000 m/s. How much fuel plus oxidizer is required
A 70-kg man and a 55-kg woman holding a 2.50-kg purse on ice skates stand facing each other. What is the woman's recoil speed
A thin rectangular plate of uniform area density ?1 = 1.14 kg/m2 has a length a = 0.540 m and a width b = 0.230 m. find the distance from the origin of the resulting plate's center of mass
a girl who weighs 720 N rides on a FErris wheel of radius 7.5 m. when at the top of the wheel her effective weight is 600 N. Find out her speed and the angular speed of the wheel
A 4.1-kg block slides down an inclined plane that makes an angle of 29° with the horizontal. Find the coefficient of kinetic friction between the block and plane
The coefficient of kinetic friction is 0.400. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
If the ball's speed just before impact is 100 m/s, what is the angular speed of the rod immediately after the collision.
At the bottom, it hits another stationary car with equal mass. The two cars have Velcro and stick together. At what speed do the two cars move after the collision
A typical coal-fired plant generates 1000 MegaWatts of usable power at an overall thermal efficiency of 35%, What is the rate of heat input to the plant
You are kicking a ball in the air that is sitting on the ground. You are told the initial velocity and the distance to a wall of a known height. how fast the ball is going when it reaches the walls position
The bullet becomes lodged in the block, and the two slide together on the floor for a distance of 1.3 m before coming to rest. If the coefficient of friction between the block and the floor is 0.40, Elucidate what is the mass of the block?
A sheet of glass is coated with a 495-nm-thick layer of oil (n = 1.42), What is the color of reflected light and What is the color of the most part of transmitted light
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