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Q.The net force exerted on a particle acts in the positive x direction. Its magnitude increases linearly from zero at x = 0, to 288 N at x = 3.0 m. It remains constant at 288 N from x = 3.0 m to x = 7.0 m and then decreases linearly to zero at point A where x = 10.0 m. Determine the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)
Q. A 0.8- m long rod rotates about an axis through one end and perpendicular to the rod, with an angular speed of 1.9 rev/s. The plane of rotation of the rod is perpendicular to a uniform magnetic field of 0.8 T. Calculate the emf induced across the ends of the rod.
The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.8 N. Suppose that only static friction supplies the centripetal force, & find the radius r of the tyre.
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 × 1015 Hz.
The stirrer is used to stir the mixture until it reaches its last equilibrium temperature of 32°C. Analyse the mass of the aluminum cup.
A space vehicle is coasting at a constant velocity of 28.5 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.523 m/s2 in the +x direction.
As part of a safety investigation, two 1400 cars travelling at 18 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
A concave shaving mirror has a focal length of 95 cm. find the image position of a cologne bottle placed in front of the mirror at a distance of 165cm. Calculate the magnification of the image. Is the image real or virtual? Is the image inverted o..
An extension cord made of two wires of diameter 0.129 {rm cm} (no. 16 copper wire) and of length 1.5 m (5 ft) is connected to an electric heater which draws 13.5 A on a 120-{rm V} line. How much power is dissipated in the cord.
A freight car with a mass of 2500 kg rolls down an inclined track through a vertical distance of 1.5m. at bottom of the incline, on a level track, the car collides and couples with the identical freight car that was at rest. What percentage of th..
The difference in piezometric pressure, pz,A – pz,B. Express both answers in kPa and pressure differences pA - pB.
A 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 834 N. What is the acceleration of elevator.
The angular momentum of Earth is constant
A 151 kg rocket moving radially outward from Earth has a speed of 5.03 km/s when its engine shuts off 226 km above Earth's surface. (a) Assume negligible air drag; find the rocket's kinetic energy when the rocket is 535 km above Earth's surface. (b) ..
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