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A freight train is rolling down the track at 65.0km/hr. Out ofthe fog, 1km behind, a fast express going 120km/hr, appears on thesame track. The Express engineer slams on the brakes. With thebrakes set, he needs 3.00km to stop. Will the express rear-end thefreight train or will the express train be able to AVOID acrash?
A horizontal wire rod is free to slide on a vertical conducting. The wire has mass 7 kg and length 7 m, find the terminal velocity of the wire
A .115 kg mass undergoes simple harmonic motion on a horizontal spring with force constant k= 287 N/m. estimate the amplitude of the motion
question in a plane radio wave the maximum value of the electric field component is 5.86 vm. calculate a the maximum
A roller coaster car of mass 310 kg (including passengers) travels around a horizontal curve of radius 35 m. Its speed is 17 m/s. What is the magnitude and direction of the total force exerted on the car by the track? magnintude N direction ° above t..
a particle is traveling along an arc of 6.5-in radius. the arc is the origin of a coordinate system. when the particle
At a rock concert, a dB meter registered 130 dB when placed at a2.8 m in front of a loudspeaker on the stage. (a) what was thepower output of the speaker assuming uniform spherical ofthe sound and neglecting absorption in the air?(b) how far awaywoul..
Two students stand opposite each other on the rim of the merry-go-round of 6m diameter and rotating at 12 rev/minute. Calculate the coriolis force on the ball
A current of 5 A flows to the right along the x-axis through an infinitely long wire. A loop of wire with radius 25 cm is centered along the y-axis at y=1 meter. Draw the final arrangement of wires
A tank is 2m above the connection to the water controls. The water then travels up a vertical pipe to the shower head 3.5m above the water controls. Determine the water pressure at the shower controls
On a frictionless horizontal air table, puck A (with mass 0.253kg ) is moving toward puck B (with mass 0.372kg ), What was the speed vAi of puck A before the collision
You sled down a hill of 45-m vertical height. The combined mass of you and your sled is 130kg. How much work was doen against friction during your decent
An air gap capacitor is constructed of two parallel 20.0cm x 2.00 cm metal plates separated by a distance of 100.0 um. calculate The charge density on the plates
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