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A square rod and a cylindrical rod are made of the same copper alloy and cut to the same length, as shown in the figure. When a potential difference of 1.70 V is applied across the length of cylindrical rod, it dissipates 10.0 W by heating. What voltage should be applied across the length of the square rod so that it also dissipates 10.0 W.
question a ripe mango hanging from a branch suddenly falls down to the ground. if the mango acquired a final velocity
Consider the following situation: you fire a tennis ball off theroof of a building of height h, with initial velocity magnitudev0 and angle θ. Show that the final velocitymagnitude with which the ball hits the ground is independent ofθ.
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
A rubber ball is able to bounce 0.90 times the height from which it is dropped. WHat is the ball's resultant displacement from it's initial hieght to it's maximum height after one bounce
Two large metal plates are parallel to each other and separated by 2 cm. they are connected to a 120 V battery. What is the speed of the electron just before it hits the positive plate
A car jumps off the slope of 1.5 m height and at speed of 40km/hr. Slope is at 30 degrees. What are the forces acting on wheel when it hits the ground
A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 28.5° and the angle of refraction is 16.6°, find the critical angle for the liquid
An object is placed at a distance of 40 cm from a thin lens. If a virtual image forms at a distance of 50 cm from the lens, on the same side as the object, what is the focal length of the lens?
a diving bell in the shape of a cylinder with height 2.5m is closed at upper end and open at the bottom. its lowered
A block has an initial speed V(o) > 0 on a linear trajectory on the surface with friction coefficient u and air resistance (F = cv^2). Derive an equation that will represent the velocity (V) as a function of the position of the block (x). So V(x).
Two Styrofoam balls with the same mass m = 9.5 10-8 kg and the same positive charge Q are suspended from the same point by insulating threads of length L = 0.98 m (the figure below). The separation of the balls is d = 0.026 m. What is the charge Q?
A simple pendulum oscillates with a period of 1.3 seconds the maximum velocity of the bob is 38 cm. Determine the amplitude of the motion in degrees and the maximum tangential acceleration of the bob in cm/s2
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