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A 201 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.860, and the log has an acceleration of 0.900 m/s2. Find the tension in the rope.
An object is being acted upon by three forces and moves with a constant velocity. What is the direction of the third force
A combination mercury- steam turbine takes saturated mercury vapor a boiler at 500 C and exhausts to steam boiler at 240 C. what is the ideal efficancy of this combination
A 5 kg ball is dropped and hits the ground with a velocity of 14 m/s. using the law of conservation of energy, what height was it dropped from
A jet is circling an airport control tower at a distance of 18 km. An observer in the tower watches the jet cross in front of the moon. Find the distance traveled (in meters) by the jet
A projectile is fired from the origin (at y = 0 m) as shown in the figure. The initial velocity components are = 920 and = 79 . The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q. In the figure, the y-co..
A pendulum is made out of a ( 251.3+-0.1)g mass and a string that is (1.3+-0.005)m long. If the mass has a speed of (1.3+-0.1)m/s, Calculate the tension of the string and its uncertainty
A wave has a speed of 500.0 m/s and a wavelength of 4.9 m. What is the frequency of the wave? What is the period of the wave?
Early in the morning, when the temperature is 5.0°C, gasoline is pumped into a car's 45 L steel gas tank until it is filled to the top. How much gasoline spills out in this case
You want to design the loop-the-loop toy. The idea is that a ball of mass m=0.01 kg, determine the minimum height necessary for the ball to remain in contact with the track during the whole loop-the-loop journey
A reaction vessel contains 8.06 g of H2 and 64.0 gof O2 at a temperature of 125?C and a pressure of 125kPa. What is the volume of the vessel
A broken piano emits frequencies from a low of 32.0 Hz to a high of about 4100 Hz. What is the shortest wavelength if the speed of sound in air is 342.50 m/s? Record the answer to three decimal places and include units in the answer.
A 13kg box slides 4 m down the frictionless ramp , then collides with a spring whose spring constant is 180Nm.
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