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A ship's mast reaches to a height of 15 meters above the surface of a 10 meter deep lake. When the sun is 30 degrees above the horizon, how long will the shade of the mast be on the bottom of the lake?
The electric potential inside a conducting sphere is 245V, and a distance d = 32.0cm from the surface of the sphere, the potential is 175V. Calculate (a) the radius of the sphere and (b) the charge on the sphere.
The last stage of a rocket is traveling at a speed of7800 m/s. This last stage is made up of two parts that are clamped together, namely, a rocket case with a mass of 300.0 kg and a payload capsule by a mass of220.0 kg. When the clamp is released, a ..
An engine that operates at half itstheoretical (Carnot) efficiency operates between 525?C and280?C while producing work at the rate of 850 kW. How much heat is wasted per hour
Ball 1, with mass of 100g and traveling at 10 m/s, collides head-onwith ball 2, which has a mass of 300g and is initially at rest. What is the final velocity of each ball
How much force does a 150,000 N/C force exert on a deuteron.
The magnetic field of a plane-polarized electromagnetic wave is given by B=1.2*10^-6 Sin[2pi (z/240 – (t*10^7)/8)] in SI units . The field vector is B_ = B(z,t)[(i^+J^)/ 2^(1/2)]. Find the average power per square meter carried by the EM wave. Writ..
The rms speed of 1.0 mol of argon atoms (atomic weight 40 g/mol) in a box is 680 m/s. Treat the gas as ideal. What is the temperature inside the box
The large blade of a helicopter is rotating in a horizontalcircle. The length of the blade is 7.64 m, measured from its tip tothe center of the circle. Find the ratio of the centripetalacceleration at the end of the blade to that which exists at apoi..
Suppose 12.6 g of oxygen gas (O2, 32.0 g/mol) is heated at constant atmospheric pressure from 17.0°C to 110°C. How much energy is transferred to the oxygen as heat
A ball is thrown from the window of a high-rise building with an initial velocity of 5.1 m/s at an angle of 22 deg. below the horizontal. Find the height from which the ball was thrown
Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular
A 8 m x 11 m swimming pool slopes linearly from a 1 m depth at one end to a 3.8 m depth at the other. What is the mass of water.
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