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A 60 kg bicyclist rides his 9.8 kg bicycle with a speed of 16 m/s.
a.)How much work must be done by the brakes to bring the bike and rider to a stop?
b.) How far does the bicycle travel if it takes 4.0 s to come to rest?
c.) What is the magnitude of the braking force?
A 69 kg boy and a 40 kg girl use an elastic rope while engaged in a tug-of-war on an icy, frictionless surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
A capacitor is discharged when a wire is connected across its terminals, How much energy is released for a 1.00 uF capacitor with 10.0 V across its plates
A car is being pulled out of the mud by two forces that are applied by the two ropes. The dashed line in the drawing bisects the 30.0° angle.
Determine the energy of the incident electron. How many coulombs of protons and electrons are in each penny.
Mario is watching Luigi fly past in a spaceship at 1.63×108 m/s. How long does an hour on the ship last, according to Luigi
The blue ball moves at an angle of -35° and a velocity of 2.1 meters/second. What is the final y-momentum of the system?
During the time interval between t = 0 s and t = 26 s the total amount of charge that has crossed a plane across a wire at time t , What is the maximum value of the current
An aquarium contains a 5-cm layer of water (n = 1.33) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the air is 30, what is the angle of refraction into the carbon tetrachloride?
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate. Assume the surface area of the cloud to be the same as the area of a square that ..
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown, What is the y component of the ball's velocity
If the current in the circuit is 0.15 A and the resistances are R1 = 100 ? and R2 = 260 ?, what is the emf of the battery.
What is the velocity of q_{2} when the balls are 0.450 m apart. what is the speed that the bar falls.
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