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How much heat in joules is needed to raise the temperature of 9.0 L of water from 0C to 94.0C? (Hint: Recall the original definition of the liter.)------J
A projectile is shot from the ground at an angle of 55 degrees with respect to the horizontal, and it lands on the ground 5 seconds later. find the horizontal component of initial velocity
q1. a swimmer tries to swim straight across a river. he swims at a speed of 0.600 ms relative to the water. the river
A horizontal force of 150 N is used to push a 45.0 kg packing crate a distance of 5.10 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150 N force _________J (b) the coeffici..
a lens is made of glass having an index of refraction of 1.5. one side of the lens is flat and the other convex with a
Three moles of an ideal monatomic gas are at a temperature of 345 K. What is the change in the internal energy of the gas
The position of a 30 g ball is measured to be 27.3 cm +/- .004 cm (that is: the position is 27.3 cm with an uncertainty of .004 cm) What is the uncertainty in the velocity of the ball
A variable inductor with negligible resistance is connected to an ac voltage source. By what factor does the current in the inductor decrease if the inductance is increased by a factor of 4.2 and the driving frequency is increased by a factor of 2.3?
discuss the function of a washing machinedryer in terms of circular motions centripetal force and pseudo centrifugal
1.50-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 5.60sin(2?t), FIND THE AMPLITUDE OF THE MOTION
An organ pipe is 107 cm long. What is the third audible harmonic if the pipe is closed at one end? The speed ofsound in air is 343m/s
Calculate, using Newton's law of gravity, the magnitude of the force of attraction between the Earth and a mass of 16.000 kg on the Earth's surface
acA block lies on a plane which is inclined at 22 deg to thehorizontal. The coefficient of kinetic friction between blockand plane is %u03BCk = 0.17. compute the acceleration of the block
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