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A bridge of length 69 m and mass 90000 kg is supported at each end. A truck of mass 28500 kg is located 26 m from the left end. What is the force on the bridge at the left point of support? The acceleration of gravity is 9.8 m/s2. Answer in units of N.
Suppose two identical spheres are insulated: sphere A carries +3.54Q and sphere B carries -20.2Q, What is the charge on sphere A now
Two railroad freight cars with masses 100 and 150 approach with equal speeds of 0.300, Find the velocity of the heavier car after the collision
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 11.0 s. Ignore air resistance. compute the average mechanical power output of the engine
Why does the final electron energy not depend on the grid voltage?
a ray of light traveling through air encounters a 1.4 cm-thick sheet of glass at a 38 degree angle of incidence.how far
During a circus performance, a 70.3-kg human cannonball is shot out of an 15.4-m-long cannon. determine the average net force exerted on him in the barrel of the cannon
The arm of a crane is 17.0 meter long and makes an angle of18 degree with the horizontal. Find the maximum torque the crane can withstand if the maximum load is 454 N
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 2 m and let go. what is the maximum velocity of the mass
marvin the martian has run out of gas and is in a circular motion around the sun. His UFO is m=500kg and he is orbiting with a radius of 3 x 10^8 m. What is Marvins angualr velocity around the sun
A cube of balsa wood (side length = 0.25 m) is tied with a string to the bottom of a water- filled container. The wood is completely immersed. What is the tension in the string?
A 3.5-cm tall object is viewed through a converging lens. When the lens moves from one place to another, the orientation of the image changes from upright to inverted. How far from the object does the lens stop
You jog at 6.2 mi/h for 5.0 mi, thenyou jump into a car and drive for another 5.0 mi. With what average speed must you drive
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