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Delivery trucks that operate by making use of energy stored in a rotating flywheel have been used in Europe. The trucks are charged by using an electric motor to get the flywheel up to its top speed of 202-? rad/s. One such flywheel is a solid, homogeneous cylinder with a mass of 550 kg and a radius of 1.0 m. What is the kinetic energy of the flywheel after charging? If the truck operates with an average power requirement of 7.0kW, for how many minutes can it operate between chargings?
Two identical +9.5 uC point charges are initially 3.5cm apart from each other. If they are released at the same instant from rest, how fast will each be moving as they are very far away from each other? Assume they have identical masses of 1 mg.
Define Eddy viscosity and Von Karman constant using the mixing-length theory.
When placed in a fluid with an unknown density, a sphere with a radius of 8.50 cm floats with 2/3 of its volume submerged. What is the density of the fluid
A snowmobile is originally at the point with position vector 31.1 m at 95.0° counterclockwise from the x axis, find the following. velocity vector position vector
A small mailbag is released from a helicopter that is descending steadily at 1.75 m/s. After 5.00 s, what is the speed of the mailbag
31.3 million excess electrons are inside a closed surface. what is the net electric flux through the surface
A 400 g mass is attached to a spring of constant k=16.0 N/m and set into oscillation with amplitude A=25.0 cm, Find the totall mechanical energy E of the oscillator
A series RL circuit with L = 3.00 H and a series RC circuit with C = 3.00 μF have equal time constants. If the two circuits contain the similar resistance R.
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, Find the net downward force on the tank's flat bottom, of area 2.45m2 , exerted by the water and air inside the tank and the air outside the tank
A small object is placed to the left of a convex lens and on it's optical axis. The object is 30 cm from the lens and has a focal length of 12 cm. Describe the nature of this image
An airplane starting from airport A flies 304 km east, then 364 km at 35.5° west of north, and then 150 km north to arrive at last at airport B.
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