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A new event has been proposed for the Winter Olympics. An athlete will sprint 100 m, starting from rest, then leap onto a 18 kg bobsled. The person and bobsled will then slide down a 51 m--long ice-covered ramp, sloped at 20 degrees, and into a spring with a carefully calibrated spring constant of 1800 N/m. The athlete who compresses the spring the farthest wins the gold medal. Lisa, whose mass is 39 kg, has been training for this event. She can reach a maximum speed of 8.0 m/s in the 100 m dash. How far will Lisa compress the spring?
A pedestrain bridge consists of a walkway of mass 1000kg and length 10.0m supported at each end by brackets. Two people, each of mass 80kg, are walking across the bridge.
A Carnot engine absorbs 950J of heat each cycle and provides 340J of work. How much heat is rejected each cycle
A crate with mass 32.0 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 156N. What acceleration is produced
q1. two balls are rolled off a tabletop that is 0.88 m above the floor. ball a has a horizontal velocity of 5.0 ms and
What is angular width of the beam
A student doing part B of the experiment drops a ball from h0 = 100 cm, Find the fraction of Kinetic Energy lost in this collision
A car weighing 8600 N moves along a level highway with a speed of 70 km/h. The power of the engine at this speed is 66 kW. what is the new speed of the car on the hill
An elvator can carry a max load of 1600kg is moving up with a constant speed of 2 m/s. The frictional force opposing the motion is 3320N. Determine the max power delivered by the motor to the elvator in HP.
An athlete performing a long jump leaves the ground at a 34.4? angle and lands 7.65m away, What was the takeoff speed
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the average velocity and degree south of west
A parallel-plate capacitor is made from two plates 12.5 cm on each side and 4.20 mm apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40.
When a current flows in an aluminum wire of diameter 2.13 mm, the drift speed of the conduction electrons is 1.83 × 10-4 m/s. What is the electron current in the wire
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