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A bicyclist travels in a circle of radius 20.8 m at a constant speed of 9.01 m/s. The bicycle-rider mass is 70 kg. Calculate the magnitudes of (a) the force of friction on the bicycle from the road and (b) the net force on the bicycle from the road.
q1. a hotel elevator ascends 270 m with a maximum speed of 5.0 ms. its acceleration and deceleration both have a
A telescope is used to observe two distant point sources transversely 2.50 {\rm m}apart with light of wavelength 600 {\rm nm} .The objective of the telescope is covered with a slit of width0.350 {\rm mm} .
A small glass bead charged to 6.9nC is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod, What is the total charge on the rod
On a hot summer day, a young girl swings on a rope above the local swimming hole. how high above the water was she when she let go of the rope
A nuclear-fueled electric power plant utilizes a so-called "boilingwater reactor". In this type of reactor, nuclear energy causes water under pressure to boil at 285 °C, by which the temperature of the river rises
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart, Find the speed of the proton at the moment it strikes the negatively charged plate
An ALkaline earth atom has 2 valance electrons. Both can be spin up and spin down. Write the singlet states
An R = 54.9 ? resistor is connected to a C = 28.0 ?F capacitor and to a ?VRMS = 117 V, and f = 133 Hz voltage source. Calculate the power factor of the circuit
a pendulum of length L = 48.8 cm and mass m=169g is released from rest when the cord makes an angle of 65.4 with the vertical
a block is connected between two springs on a frictionless, horizontally level track. the other end of each spring is respectively anchored to a vertical pin set at opposite ends of the track. what is the spring constant of the other spring
A 5 kg rock is dropped from rest down a vertical mine shaft. How long does it take for the rock to reach a depth of 79 m? Neglect air resistance.
A man pushes an 80.0 N crate a distance of 5.00 m upward along a frictionless slope that makes an angle of 30o with the horizontal. how much work is done by the man
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