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A train 389 m long is moving on a straight track with a speed of 40.6 m/s. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 15.0 m/s. Assuming constant acceleration, determine how long (in s) the train blocked the crossing. Disregard the width of the crossing.
A tire of an automobile has a gauge pressure of 30 psi at the top of a mountain, and the air temperature inside the tire is 300K. The atmospheric pressure at the top of the mountain is 1.7 atm.
A 5kg particle is hit with a 5N force for 0.2s towards a wall 5m away. How long does it take for the particle to hit the wall
An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member
A bullet of mass 0.01 kg moving horizontally strikes a block of wood of mass 1.5 kg which is suspended as a pendulum. What was the velocity of the bullet just before it struck the wooden block
A car travels along a straight stretch of road. It proceeds for 15.7 mi at 55 mi/h, What is the car's average velocity during the entire trip
a rectangular wooden slab with length =2.0m, width=2.0m, and height=1.0m is used as a floating device in a play water pond. find the distance from the top of the wood to the water surface
question1a plate of mass m moves horizontally with speed v on a frictionless table. a mass m is dropped vertically onto
A simple generator has a 620-loop square coil 21cm on a side. How fast must it turn in the 0.690 T field to produce a 140 V peak output.
Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks, what is the magnitude of the applied force
A uniform linear charge density of 4.0nC/m is distributed along the entire x-axis. Determine the electric flux through this surface
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, How deep is the hole
A Carnot engine does work of 150 J per cycle. The engine operates between two reservoirs at 20 degree C and 500 degree C. How much energy is lost per cycle in its exhaust
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