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A winch is used to drag a 295N crate up a ramp at a constant speed of 84.0 cm/s by means of a rope that pulls parallel to the surface of the ramp. The rope slopes upward at 26.0 degrees above the horizontal, and the coefficient of kinetic friction between the ramp and the crate is 0.320. What is the tension in the rope? If the rope were suddenly to snap, what would be the acceleration of the crate immediately after the rope broke?
You're in an airplane that flies horizontally with speed 1000 km/h (280m/s) when an engine falls off. Neglect air resistance suppose it takes 30s for the engine to hit the ground.
Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. calculate the total cross-sectional area of the capillaries
An old wooden tool is found to contain only 18% of 146C that a sample of fresh wood would. How old is the tool
A 100-g ice cube at 0 degrees C is placed in 650 g of water at25 degrees C. What is the final temperature of the mixture
A 0.15 kg ball hits a wall with a velocity of (4.00 m/s) + (5.50 m/s) + (5.50 m/s) . It rebounds from the wall with a velocity of (2.00 m/s) + (3.50 m/s) + (-3.20 m/s). What is the change in the ball's momentum?
question1a uniform bar of length 46 m and mass 3 kg is attached to a wall with a hinge that exerts a horizontal force
A piano tuner hears one beat every 3.1 seconds when trying to adjust two strings, one of which is sounding 440 Hz, How far off in frequency is the other string
when a 45.0-v emf device is placed across two resistors in series a current of 15.0 a is flowing in each of the
for circular parallel plate capacitor whose radius is 0.1 m and which the separation between the plates is 2mm what is
A charge of -0.50 µC is situated in an electric field of magnitude 9.0 × 104 N/C, directed horizontally to the right. Find the magnitude and direction of the force on it
A disk with mass m = 5.4 kg and radius R = 0.47 m hangs from a rope attached to the ceiling. What is the period of precession for this gyroscope
A proton is initially at rest at a point where the potential is 507V. Sometime later the proton is at a point where the potential is 187V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy.
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