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Q1. A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.23 mm in diameter has formed in the base of the tank. Both the hole and the top of the tank are open to the air. We can ignore air resistance and treat water as an ideal fluid with a density of 1000 kg/m.
How many cubic meters of water per second is this tank losing?
Q2. A 1.05 kg beaker containing 2.32 kg of oil (density = 904 kg/m3) rests on a scale. A 2.14 kg block of iron is suspended from the spring scale and is completely submerged in the oil. Find out the equilibrium readings of both scales.
A long straight wire carries a current of 6.2 A. The wire is horizontal in the plane of the page (screen), Calculate the force that acts on the electron
Two different electrical devices have the same power consumption, but one is meant to be operated on 120-V AC and the other on 240-V AC. What is the ratio of their currents
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor. The crate is speeding up at 0.22 m/s2. What is the work done by friction on the crate
A 4 kg hammer is accelerated at 4m/s^2 before striking a nail for 1.6 sec find the force of the hammer
Helium gas with a volume of 2.55L , under a pressure of 1.26atm and at a temperature of 44.0?C, How many grams of helium are there? The molar mass of helium is 4.00g/mol
If the polar coordinates of the point ( x , y ) are ( r , ? ), determine the polar coordinates for the following points
What is the minimum cross-sectional area required of a vertical steel cable from which is suspended a 270 kg chandelier, If the cable is 7.5 m long how much does it elongate
A piece of copper wire joins a piece of aluminum wire whose diameter is twice that of the copper. The same current flows in both wires, Compare the drift speeds in each
An aluminum bar has a length of 2.0 m and transverse dimensions of 3.5 mm and 6.9 mm, What force is required to stretch the bar 1.2 mm
question1a small plastic sphere of mass m 137 g is attached to a string.there is an electric field of 174 nc directed
The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 280 Hz less than the emitted frequency. Find out the speeder's speed with respect to the ground.
A cylinder of length L = 18 cm and radius R = 5.4 cm has its center at the origin and its axis along the x axis such that one end is at x= +9 cm , What is the net charge inside the cylinder
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