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A racetrack is to have a banked curve with radius 225 m. What should be the angle of the bank if the normal force alone is to allow safe travel around the curve at 56.0 m/s?
charge 1 is equal to 6.0x10^-9 C, and is located at (0.30,0) meters on xy coordinates. What is the direction the net force on the 5.0 nC charge
A robber's getaway vehicle, which can travel at 0.8c, is pursued by a cop. whose vehicle can travel at 0.4c. Realizing that he cannot catch up with the robber, the cop tries to shoot him with bullets that travel at 0.5c (relative to the cop). Can the..
A standing wave of frequency 3.03 Hz is set up on a string 2.6 m long with nodes at both ends and in the center
A balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. Assume that the stretching of the hose obeys Hooke's law with a spring constant of 53.0 N/m.
Consider the skateboarder in the figure below. If she has a mass of 49 kg, an initial velocity of 23 m/s, what is the work done by friction on the skateboarder
A Styrofoam slab has thickness h and density ?s . When a swimmer of mass m is resting on it, Find the area of the slab
he primary coil of a transformer has N1 = 390 turns, and the secondary coil has N2 = 2 260 turns. what rms voltage is developed across the secondary coil
Consider a simple plane pendulum consisting of mass m attached to a string of length l. find the tension of the pendulum string
how much mass can the larger piston support.
in a ski race starting from rest a 65kg skier descends through 120 meters of vertical drop nd finishes his run at 58 miles per hour. how much work is done by the skier
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 92 km/h. What is the frequency of the car's horn
A grocery sack can withstand a maximum of 310 N before it rips. Will a bag holding 20.0 kg or groceries that is lifted from the checkout counter at an acceleration of 5.5 hold?
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