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You push a 1.5 kg block against ahorizontal spring, compressing the spring by 18 cm. Then you release the block, and the springsends it sliding across a tabletop. It stops 75 cm from where you released it. The spring constantis 200 N/m. What is the block-table coefficient of kinetic friction?
A person pushes horizontally with a force of 220 N on a 66 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.28. What is the magnitude of the frictional force
Two ice skaters, Daniel (mass 65.0 kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and,while at rest, find direction of Daniel's velocity after the collision
a copper wire has a circular cross section with a radius of 5.00 mm. the equation for drift velocity is given below. vd
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 6.00 cm long, What is the impulse imparted to the hammer
A person pushes a crate rightward along a rough horizontal surface by pushing downward at 30 degrees below the horizontal with a force of magnitude F = 50.0 (N). What is the horizontal acceleration ax of the crate
The position of an alien spacecraft is given by r = o.78t^3i - 1.7t^2j + 0.39k m. The mass of the spacecraft is 2.45 x 10^6 kg. Find the net force on the spacecraft at t = 8 s
if the energy of a vibrational transition from the n 0 state to the n 1 state in co could be absorbed in a rotational
A rod of 2.0-m length and a square (2.0 mm x 2.0 mm) cross section is made of a material with a resistivity of 6.0 x 10 ^-8 ohms m. What is heat generated in the rod
A semiconductor (GaAs) laser emitting at 800 nm has a 400 micrometer cavity length with a refractive index n=3.6. If the gaing exceeds the total loss αt throughout the range 750 nm
An electric dipole consists of charges +2e and -2e separated by 0.78nm. It is in an electric field of strength 3.4 x 106 N/C. Calculate the magnitude of the torque on the dipole
The closest star to our solar system is Alpha Centauri, which is4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earthtravels toward the star. What distance does the space ship travel according to a passenger on t..
A daredevil on a motorcycle leaves the end of a ramp with speed of 35.0 m/s, what is the max height that he reaches
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