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During 0.25 s, a wheel rotates during an angle of 3.62 rad as a point on the periphery of the wheel moves with a constant speed of 2.23 m/s. What is the radius of the wheel?
Consider a long wire that makes a right angle (90°) bend. If the wire carries a current I, what is the magnetic field at point A
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 285 km/h in a semicircular arc with a radius of 190 m. Determine the tangential acceleration of the car
The sound from a mosquito is produced when it beats its wings at the average rate of 600 beats per second. Find the wavelength of sound waves produced by mosquito wings
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 6.8 m/s right before entering the wood. The mass of the nail is .06kg. what is the average force on the nail by the wood
q1. a sanding disk with rotational inertia 2.4 10-3 kgbullm2 is attached to an electric drill whose motor delivers a
A mirror has a focal length of 10 cm. An object is located 15 cm to the left of the mirror. What is the total magnification for the two images
An ice cube of mass of 10 g is taken from the freezer at-10ºC and placed into 200 ml of water in a 100-g glasscontainer at 20ºC. What will be the final temperature of the mixture after the ice has melted? The specific heat of ice is 2100J/(kg ºC),..
gravity affects any object that has mass. does gravity affect light rays? a beam of light emitted from a distant star
In San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, what is the magnitude of the net torque applied to the car
If she is served 200 of coffee at 85 in a well-insulated container, how much ice at 0 must she add to obtain a final temperature of 33.
A 54.1-kg ice skater is standing at rest on a frozen lake. The friction between his skates and the surface of the ice is negligible. what is the magnitude of his recoil velocity
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. Determine how much time elapses between an instant when the object's speed is at a maximum and the next instant when its acceleration is at a maxi..
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