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A 6.01 kg block is sitting on a level floor. A person is pulling on a rope attached to the block at a 37.69 degree angle above the horizontal (see figure). The force exerted by the person is 7.92 N. What is the normal force acting on the block from its contact with the floor?
A car traveling 90km/h slows down at a constant 0.50 m/s^2 just by "letting up on the gas." Compute the distance it travels during the third second.
A 5kg steel ball strikes a wall with a speed of 8m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ..
Passengers on The Tower of Doom, a free-fall ride at Six Flags America, sit in cars that are raised to the top of a tower. How high is the tower
A duct has an initial cross-sectional area of 0.58 m2. If the initial velocity of the air moving through the duct is 9.5 m/s, find what does the cross-sectional area have to be to increase the velocity to 15.0 m/s
a light truck with manual transmission has a circular brake drum with a diameter of d 320 millimeters. each brake pad
he resolving power of a microscope depends on the wavelength used. what minimum kinetic energy is required for the electrons
Consider two simple pendulums p and q of equal length l and mass m1 and m2 respectively. assume the bobs of the pendulum are connected to each other by a weightless spring of force constant k such that in the equilibrium position,the spring is uns..
a creamy salad dressing is made up of heavy cream corn oil and vinegar as well as a pinch of dry mustard salt and
Power dissipated by the circuit
What is the speed of the large cart after the collision. A 345 g chunk of gold at 98.5 degrees Celsius is dropped into a 656 g of water at 22.5 degrees Celsius. What will final temperature of the gold be after the system reaches equilibrium.
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..
An arrow, starting from rest, leaves the bow with a speed of 26.5 m/s. If the average force exerted on the arrow by the bow were doubled, with what speed would the arrow leave the bow
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