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A 50-kg girl rides on a giant Ferris wheel of radius 12 m that makes 2 revolutions each minute.
(a) What is the girl?s speed in m/s?
(b) What is the apparent weight of the girl at the lowest point in the ride? (Hint: Her apparent weight is equal to the force of the seat acting on her).
(c) What is the apparent weight of the girl at the highest point in the ride?
(d) If she felt weightless at the top of the ride, how fast would she be moving?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 17.0 m/s at an angle 33.0 degrees; What is the distance between the two girls
The radius of the hydrogen atom is 0.053 nm. find the Coulomb force between the electron and the proton in the atom
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
A photon with an initial wavelength of 1.380×10-11 m Compton scatters from an electron which is initially at rest. What is the energy of the outgoing photon
A 1200-kg car is being unloaded by a winch. At the moment shown in figure 9-46, the gearbox shaft of the winch breaks, and the car falls from rest. Find the speed of the car as it hits the water
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.66 V, What emf and current are induced in the square coil
How would you calculatethe magnitude of the electric force of an electron at a distance of4.5 x10-10 m from a nucleus? (Ialready have the magnitude of a proton's electric field as6.40e+11 N/C , given that the proton has a charge of 1.44E-17C.)
The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.17 mA, How much energy does the battery deliver to the calculator circuit
A cylinder contains 1.85 mol of helium gas at 18.5°C. Assume that the helium behaves like an ideal gas. What is the average kinetic energy per molecule
In a woman's 100-m race, accelerating uniformly, Laura takes 2.00 s and Healan 3.00 s to attain their maximum speeds, What are their respective maximum speeds
A 50cm long non-conducting cylinder of radius 4cm has a volume charge density of 30 uC/m^3. A grounded conducting cylindrical shell of radius 6cm is placed concentrically around the charged cylinder.
A boy is running at a speed of (6.4 m/s) and grabs a rope hanging vertically from a tall tree in order to swing out over a pond. Determine how high can he swing upward
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