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Susan's 10 kilogram baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30 degree above the floor. The tension is a constant 32.0 N and the coefficient of friction is 0.170. Use work and energy to determine the Paul speed after being pulled 2.80 meter.
A 4.0-kg object is attached to a springof spring constant 10 N/m. The object is displaced by 5.0 cm fromthe equilibrium position and let go. What is the frequency of vibration
A diver can change his rotational inertia by drawing his arms andlegs close to his body in the tuck position. After he leaves thediving board in the straight position (with some unknown angularvelocity), he pulls himself into a ball as closely as ..
A car 1500 of mass kg moving at 15 m/s strikes acar stopped at a traffic light from behind, What is the mass of the struck car
While on vacation you rent a moped and go cruising around a tropical island. If you take a 10.0° banked curve with a radius of 15.0 meters at 12.0 m/s, what is the minimum coefficient of static friction between your tires and road to keep the tires f..
An air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 5.00 ?F. evaluate the dielectric constant of the inserted material
A hydrogen atom in the ground state absorbs a 20 eV photon. What is the speed of the liberated electron
A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. What is the speed of the rider at the top of the loop
Fifty Circular turns of wire are wound closely together, so that all of them have a radius of close to 0.05,. what is the magnitude of the magnetic field at its center
The free-fall acceleration on the surface of Mars is about three eighths that on the surface of the Earth. Find the ratio of their average densities, ?Mars/?Earth
According to a crude model, the 11B nucleus is a uniform solid sphere of mass 1.83*10^-26 kg and radius 2.67*10^-15 m which spins about its diameter. what is the angular velocity of the boron nucleus
Two forces act on a car. Force A is 120 N, west and force B is 200 N at 60° N of W. What is the direction of the resultant force on the car
The image of a very distant car is located 17 cm behind a convex mirror. what is the radius of curvature of the mirror
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