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A bridge of length 50.0 m and mass 8.10 * 10^4 kg is supported on a smooth pier at each end as shown in the figure below. A truck of mass 2.90 * 10^4 kg is located 15.0 m from one end. What are the forces on the bridge at the points of support?
Find out the angle of the thread. If the locomotive can exert a constant pull of 8.36E+5 N, how long does it take to increase the speed of the train from rest to 80.7km/hr.
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave and What is the wave speed
Consider a weathered rock or soil particle lying on a slope. How would the gravitational force pulling the particle downward along the land surface vary with the inclination of the slope.
You have a concave spherical mirror with a 13.3-cm radius of curvature. You place an object on the mirror\'s axis, How far is the object's image from the mirror
A metal rod 0.50 m long moves with a speed of 2.0 m/s perpendicular to a magnetic field. what is the strength of the magnetic field
A counterweight of mass m = 3.80 kg is attached to a light cord that is wound around a pulley, What is the net torque on the system about the axle of the pulley
A current of 2.5 a runs through 20 circular wire loops of diameter 10 cm. What is the magnetic field magnitude and direction at the center of the loops? (Show the derivation of any formula that you use.)
A hollow aluminium cylinder is to be fitted over a steel piston. At 22°C the inside diameter of the cylinder is 99.2 percent of the outside diameter of the piston. To what common temperature must the two pieces be heated in order that the cylinder ju..
A 20.0 kg box is pulled up a ramp a distance d = 15.0 m with a force of Fp = 165 N parallel to the ramp, as shown in the figure to the right. Find the work done on the block by gravity
A 48 kg skier starts from rest at a height of H = 27 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. avoid the effects of air resistance and assume the ramp is frictionles..
A ball of mass 1.91 kg is dropped from a height y1 = 1.35 m and then bounces back up to a height of y2 = 0.59 m. How much mechanical energy is lost in the bounce
The drawing shows a person (weight W = 582 N, L1 = 0.841 m, L2 = 0.406 m) doing push-ups. Find the normal force exerted by the floor on each hand
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