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A crane is being used to lift a container onto a cargo ship. You program the crane so that it lifts the container with a constant positive acceleration, a, during the first half of the lift and with a constant negative acceleration of the same magnitude, -a, during the second half of the lift. You want to do this so that the maximum speed of the crane is 2.5 m/s. The containers are initially at rest on the dock. The container has a mass of 1400 kg and the total distance the container is lifted is 4.0 m. What is the maximum power the crane must provide to the container during lift? Give you answer in Newtons to four digits.
A uranium-fuelled research reactor has a cubic shape with sides of length 1.0 m. estimate the power out of the reactor in units of watts
Two identical piano wires have a fundamental frequency of 640 Hz when kept under the same tension. What fractional increase in the tension of one wire would lead to the occurrence of 10 beats/s when both wires oscillate simultaneously.
A charged particle m=6g q=-80 c moves in a region of uniform field along a helical path (radius = 3.0 cm, pitch = 9.0 cm) as shown. Illustrate what is the angle among the velocity of the particle and the magnetic field?
Equipotentials between two parallel lines with a floating circular electrode: I dont need to know the exact potentials, What should be the potential inside the electrode
As you ride your 14-kg bicycle on level ground you do some work against a 30N force of air resistance if your mass is 65-kg.What is power you apply to maintain a velocity of 25-km`.a-on level ground b-going up a 5degrees slope?(remember it's a num..
A spherical satellite with a radius of 75m is spinning over its own axis with an angular speed of 232rad/s. What is the angular momentum after the failure
An electron and a positron (an antielectron) make a head-on collision, each moving at v=0.99999c. What is the kinetic energy of each of the muons
The water pump on the engine of an automobile has a mass flow rate of 8.30 lbm/s. The water enters at 0.00 psig with a velocity of 1.00 ft/s and leaves at 10.0 psig with a velocity of 10.0 ft/s with no change in height or tempe..
Find the speed parameter and Lorentz factor for an electron that has a kinetic energy of 5.00 keV.
A motorist travels at a constant speed of 35.5 m/s through a school zone, exceeding the posted speed limit. Find the time required to catch the car from the instant the car passes the policeman
When a 3.15-kg fan, having blades 16.5 cm long, is turned off, its angular speed decreases uniformly from 12.0 rad/s to 4.30 rad/s in 6.00 s. how long after it is turned off does it take the fan to stop
You drop 500 g of ice at -35oC into a bucket of water (1200 g) at 45oC. Find the final temperature of the system
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