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Question1
A small metal sphere, carrying a net charge of = -3.00, is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of = -7.40 and mass 1.40, is projected toward. When the two spheres are 0.800 apart, is moving toward with speed 22.0. Imagine that the two spheres can be treated as point charges. You can overlook force of gravity. What is the speed of while the spheres are 0.440 apart?
Question2
Attempting to stop on a slippery road, a car moving at 88 km/h skids at 30 degrees to its initial motion, stopping in 3.8 seconds. Determine the average acceleration in m/s^2, in coordinates with the x-axis in the direction of an original motion and the y-axis toward the side to which the car skids.
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire), how much power is dissipated in the cord
A 5.0-kg projectile is fired over level ground with a velocity of 200.0 m/s at an angle of 30.0 ° above the horizontal
A rope is wrapped around a wheel of radius R=2.0 meters. The wheel is mounted with frictionless bearings on an axle through its center. What is the moment of inertia of the wheel
Suppose you wish to fabricate a uniform wire out of 2.6 g of copper. If the wire is to have a resistance of R = 0.25 and if all of the copper is to be used, what must be the length of the wire in m and the diameter of the wire in mm.
The string in a yo-yo is wound around an axle of radius 0.531 cm. The yo-yo has both rotational and translational motion, like a rolling object, What is the speed of the yo-yo when it reaches the distance of 1.42 m
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76 10-11 m. Determine the kinetic energy of the electron.
At what angle to the surface must a diver submerged in a lake look toward surface to see the setting Sun just all along the horizon.
In lectures and in tutorials, we discussed the confinement of an electron (or other particle) to a box of infinite depth, running from x = 0 to x = a. If we, instead, define this 1-D region of confinement as running from -(a/2) to (a/2)
In a crash test, a 1100 kg car slams into a concrete wall at 17.1 m/s and comes to rest in 0.275 s. a)Find out the magnitude of the impulse delivered to the car.b) Find the average stopping force.
A steel ball of mass M is released from rest at point P. It follows a smooth curved rail to point Q and finally reaches point R with K.E. of 7J. The speed of the ball at point Q is 2MS-1 and the height between point P and the ground is 3m. Then find ..
Find out the magnetic induction at a point
A car is parked on a steep incline, making an angle of 37.0° below the horizontal and overlooking the ocean, when its brakes fail and it begins to roll. Starting from rest at t = 0, the car rolls down the incline with a constant acceleration of 3...
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