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A frictionless incline at an angle of 40.0° with respect to the horizontal has a block of mass 50.0 kg attached by a mass less rope-pulley assembly to a mass weighing 55.0 kg hanging in the air. What is the acceleration of the mass on the incline? What is its speed after a displacement of 15.0m? What is the length of time it took to cover the 15.0m?
A helium-neon laser beam has a wavelength in air of 633 nm. Ittakes 1.43 ns for the light to travelthrough 25.0 cmof an unknown liquid. What is the wavelength of the laser beam in the liquid
A uniform electric field with a magnitude of 5650 N/C points in the positive x direction. Find the change in electric potential energy when a +15.5-"mu"C charge is moved 4.50 cm in the positive y direction.
an automobile suspension involves both leaf springs with stiffness k and shock absorbers resist motion with a force
two solenoids are nested coaxially such that their magnetic fields point in opposite directions. treat the solenoids as
When the power is turned off on a turntable spinning at 67.0 rpm, you find that it takes 13.0 revolutions for it to stop while slowing down at a uniform rate. What is the angular acceleration (in rad/s^2), of this turntable
A 140 kg astronaut (including space suit) acquires a speed of2.50 m/s by pushing off with his legs from an 1800 kg space capsule. What is the change in speed of the space capsule
At t=0 , a wheel rotating about a fixed axis at a constant angular acceleration of -0.40rad/s2 has an angular velocity of 1.5rad/s and an angular position of 2.3 rad. Determine the angular position of the wheel at t= 2.0second
A vertical spring (spring constant = 119 N/m) is mounted on the floor. A 0.390 kg block is placed on top of the spring and pushed down to start it oscillating in simple harmonic motion. The block is not attached to spring.
A gold prospector finds a solid rock that is composed solely ofquartz and gold. evaluate the mass of the gold inthe rock
If two parallel conducting plates were separated by .60 cm, and the potential difference between the plates is 90V, the magnitude of the electric vector midway between the plates would be?
A college campus features a large fountain surrounded by a circularpool. If the difference in linear speed between the students is0.23 m/s, what is the radius of the fountain
Two spherical shells have a common center. A -2.1 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +5.0 10-6 C charge is spread uniformly over the outer shell.
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