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A boat is steered with constant velocity u .It starts from Point A on the bank of a river of width 12*(2)^(1/2)m which flows at a constant speed of u/2.The boat is always steered such that it point towards a fixed point B on the other bank directly opposite to A.Find the distance of the boat from point B when the line joining boat and point B makes an angle of 45 degrees with the line AB.
A 2.50 cm high object is placed 3.5 cm in front of a concave mirror. If the image is 6.0 cm high and virtual, what is the focal length of the mirror
A 10m^3 tank of compressed natural gas has an absolute pressure of 400 kPa at a temperature of 27 C. What is the mass of the gas in the tank
Two people with a combined mass of 115 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 8.24 cm. Find the total load supported by the springs
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is 2.10 cm
q1. a standardized biological microscope has an 8.0--focal-length objective. what focal-length eyepiece should be used
if a 2.5 kg ball puts 118 joules of energy in a spring with a 614 n/m constant, how far is the spring compressed.
What electric potential energy will a fourth charge q4 = 4mC and located at the origin with respect to the other three charges experience and what is the pendulums period for small angle oscillations?
A 16.23-cm-long, 173 g rod is pivoted at one end. A 16 g ball of clay is stuck on the other end. What is the period if the rod and clay swing as a pendulum
A block of mass 1.40 kilogram is attached to a spring and sits on a frictionless table which is a height h=4 meter above the floor. obtain the speed of block when it leaves the spring
An electric motor with a power of 3W is used to lift a .2 kg mass a height of 0.5 meters in 3.0 seconds, since total energy must be conserved
A large capacitance of 1.20 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
Calculate the fuel utilization and infinite multiplication factor for a fast reactor consisting of a mixture of liquid sodium and plutonium
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