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You live in the ground floor of a high rise apartment block. The over head water tanks which supply water to all the apartments are situated on the rooftop. When water flow through the taps in your apartment is low, you go to inspect the water level in the tank on the rooftop.
You check the water level in the tank and do the needful [get the tank filled]. How can you sort out the problem of checking the water level in the tank without going to the rooftop every time the water flow is low or water stops flowing?
A cyclist uses 27,000 joules per minute (this is about 385 food Calories per hour) to cycle at a constant pedaling rate of 450 radians per minute along a flat road using a gear ratio of 4
A 100-kg streetlight is supported equally by two ropes. One rope pulls up and to the right, 40° above the horizontal; What is the tension in each rope
A hollow spherical shell has mass 7.85kg and radius 0.220m. What is the kinetic energy of the shell after it has turned through 7.00rev
A certain waffle iron is rated at 1.25 kW when connected to a 120-V source. What current does the waffle iron carry
Write a discussion paper about path to the atomic bomb.
A uniform soda can of mass 0.138-kg is 11.80-cm tall and filled with 1.30-kg of soda. Then small holes are drilled in the top and bottom (with negligible loss of metal) to drain soda. (Initially the soda can is full.)
A person with a mass of 80kg stands on two snowshoes with areas of 2500cm^3 each. What is the total pressure on the snow
The E string of a violin has a mass per unit length of .0004 kg/m , and must be tuned to a frequency of 660 Hz. The vibrating length of the string is .33 m Calculate the tension when the string is in tune.
For a particle on in a box running between x=0 and x=1 the function cos[n π x] is not a satisfactory solution. The function cos[n π x/2] is a satisfactory solution for a particle in a box running between -1 and 1. Explain
The angular momentum of a flywheel having a rotational inertia of 0.647 kg·m2 about its central axis decreases from 6.30 to 0.880 kg·m2/s in 3.00 s. How much work is done on the wheel
find the relationship between the length h and width a of a regular right triangular prism such that the prism is
A ball hangs from the end of a pole that is attached to a wall. The pole is 3.0 m long and makes an angle of 60o with the vertical. Find the maximum weight of the ball
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