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A vibrating source generates a harmonic wave on a string underconstant tension. If the power delivered to the string is doubled, by what factor does the speed change?
question an optical disk drive in your computer can spin a disk at up to 10000 rpm. if a particular disk is spun at
(a) Determine the magnitude and direction of the electric field at the location of charge q. (Use k_e for the Coulomb constant and q and a as necessary.) Magnitude Direction ° (counterclockwise from the horizontal) (b) What is the total electric f..
Superman leaps in front of Lois Lane to save her from a volley of bullets. In a 1-minute interval, an automatic weapon fires 152 bullets, Find the average force exerted on Superman's chest
The log has a mass of m = 919 kg; the truck has a mass of M = 8550 kg. According to the truck manufacturer, Calculate the minimum coefficient of static friction
A solid sphere has a temperature of 768 K. The sphere is melteddown and recast into a cube that has the same emissivity and emitsthe same radiant power as the sphere. What is the cube'stemperature in kelvins?
A 2kg block is moving to the right at 1.0m/s just before it strikes and sticks to a 1.0 kg block initially at rest
Oppositely charged parallel plates are separated by 5.39 mm. A potential difference of 600 V existsbetween the plates. What is the magnitude of the electric field between the plates?
A computer disk drive is turned on starting from rest and has a constant angular acceleration. How long did it take to make the first complete revolution
An artillery expert fires a cannonball at an angle of 36.87o at an enemy encampment sitting on a plateau 40 m high and 300 m horizontally from the cannon. How long was the cannonball in the air
A yo-yo has a rotational inertia of 970 g·cm2 and a mass of 104 g. Its axle radius is 3.15 mm, What is the magnitude of its linear acceleration
A magnetic field near the ceiling points up and is decreasing. Looking up at the ceiling, does non-Coulomb electric field curl clockwise or counter-clockwise.
consider a neutron star with a mass of 1.5 times that of our sun and a radius of 15 km. consider this to be all closely
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