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You operate a small grain elevator near Champaign, Illinois. One of your silos uses a bucket elevator that carries a full load of 800 kg through a vertical distance of 39 m. (A bucket elevator works with a continuous belt, like a conveyor belt.)(a) What is the power provided by the electric motor powering the bucket elevator when the bucket elevator ascends with a full load at a speed of 2.2 m/s?
A 500g model rocket is on a cart that is rolling to the right at a speed of 3.0m/s. The rocket engine, At what horizontal distance left of the hoop should you launch
A railroad car of mass 2.1 104 kg moving at 2.50 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
1. a compact disk spins with angular velocity 43.5rads . the player is turned off and 2.95s later the cd has
A Ferris wheel, rotating initially at an angular speed of 0.50 rad/s, accelerates over a 6.0-s interval at a rate of 0.040 rad/s2. What is its angular speed after this 6-s interval
two extremely large nonconducting horizontal sheets each carry uniform charge density on the surfaces facing each other. find the surface charge density on the lower sheet
A car is travelling at a constant speed of 32m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from ramp.
The alarm at a fire station rings and a 79-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.3 m). Just before landing, his speed is 1.2 m/s. What is the magnitude of the kinetic frictional force exerted on the fi..
the water in a deep underground well is used as the cold reservoir of a carnot heat pump that maintains the temperature
A block is projected up a frictionless inclined plane with initial speed v0 = 3.44 m/s. The angle of incline is ? = 32.4°. How long does it take to get there
an electric dipole consists of charges 2e and -2e separated by 0.77 nm. it is in an electric field of strength 4.20 106
A line of negative charge lies along the x-axis from -3.40 cm to +5.30 cm. Calculate the net electric flux through the Gaussian surface
A laser emits a narrow beam of light. The radius of the beam is 1.5 mm, and the power is 2.9 mW. What is the intensity of the laser beam
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