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An auto race is held on a circular track. A carcompletes one lap in a time of 18.9 s, with an average tangentialspeed of 42.6 m/s. find
a. the average angular speed
b. the radius of the track.
A car accelerates from rest to a kinetic energy of 2.06 x 105 J in a distance of 638 m. How much force did the car's engine deliver to produce this acceleration.
Four identical charges (+1.9 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
q1. a car slows down with an acceleration that has a magnitude of 3.6 ms2. while doing so it travels 113 m in the x
An object of mass .10kg makes an elastic head on collision with a stationary object with a mass of .15 kg. What is the initial velocity of the .10kg object
Consider two parallel-plate capacitors, C1 and C2, that are connected in parallel. The capacitors are identical except that C2 has a dielectric inserted between its plates. What is the final voltage across the two capacitors
The sound level measured in a room by a person watching a movie on a home theater system varies from 60 dB, Approximately how many times louder is the latter sound?
A hotel elevator ascends170m with a maximum speed of5.4m/s. How long does it take to make the complete trip from bottom to top
An ideal gas is enclosed in a cylinder that has a moveable pistonon top. The piston has a mass of 4500 g and an area of 6.50 cm2 and is free to slide upand down, keeping the pressure of the gas constant.
A charge of uniform volume density 40nc/m3 fills acube with 8.0 cm edges. What is the total electric flux through the surface of this cube?
A courier on a bucycle travels 2.0 km N then 3.5 km E then 1.0 km S. What is the magnitude of the displacement of the courier for this trip
A simple harmonic oscillator has an amplitude of 3.5cm and a max speed of 28cm/s. What is its speed when the displacement is 1.75cm
What is the magnitude of the acceleration of a modified At wood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg
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