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A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat and disrupting the flow of blood (and thus oxygen) to your brain. If that current persists for 3.00 min, how many conduction electrons pass through your chest?
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 1.8 rad/s2. (a) How long does it take the discus thrower's speed to get to 3.5 rad/s?
A 10.0-g bullet is fired from a rifle having a barrel 0.60 m long. Choosing the origin to be at the location where the bullet begins to move, Find the speed of the bullet as it leaves the barrel
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. What is the speed of the second train
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.70{\rm m/s} relative to the ground. What is the magnitude of the ball's velocity relative to Juan
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 72.4°. Calculate the angle of refraction at the first surface
A wave on a string has an amplitude of 0.32 m, a frequency of 120 Hz, and a wavelength of 1.4 meters. What is the maximum speed of a point of the string
A 2.10 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 20.5 cm. Find the total mechanical energy of the system
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
What is the wavelength of EM radiation that ejects 2.00-eV electrons from calcium metal, given that the binding energy is 2.71 eV
a world class sprinter can burst out of the blocks to essentially top speed of about 11.5m/s in the first 15.0m of the race. What is the average acceleration of the sprinter
A 0.750kg block is attached to a spring with spring constant 16.5N/m . While the block is sitting at rest, What are the amplitude of the subsequent oscillations
A baseball (m = 145 g) approaches a bat horizontally ata speed of 40.9 m/s (91.5 mi/h) and is hit straight back at a speedof 51.7 m/s (116 mi/h). If the ball is in contact with the bat fora time of 1.44 ms, what is the average force exerted on the..
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