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An electric charge +Q is uniformly distributed throughout a non-conducting solid sphere of radius r. Determine the electric field everywhere inside and outside the sphere
If it takes 40 J to push a large box 4 m across a floor, what is the magnitude of the force on the box
The experiment you did in lab is repeated, using a uniform metal bar that is 80.0 cm long instead of the meterstick. Since the bar is uniform, What is the mass of the bar?
A spaceship containing an astronaut travels at a speed of 0.50 c relative to a second inertial observer. What is the total energy of the astronaut according to the astronaut if her mass is 70kg
A pair of speakers separated by .700 m are driven by the sameoscillator at a frequency of 690 Hz. How far must the observer walk before reaching a relativemaximum in intensity
A high electron mobility transistor (HEMT) controls large currents by applying a small voltage to a thin sheet of electrons. What is the density of electrons per m3 in the sheet? Do not enter unit
Thunderclouds typically develop voltage differences of about 1×108 V. Given that an electric field of 3×106 V/m is needed to produce an electrical spark within a volume of air, estimate the length of a thundercloud lightning bolt.
The distance between an object and its image formed by a diverging lens is 4.70 centimeter. The focal length of the lens is -2.40 centimeter. Evaluate what is the object distance
A 4 kg object is subjected to two forces, F with arrow1 = 14 N i hat - 5 N j hat and F with arrow2 = 12 i hat - 14 N j hat. What is the object's acceleration
A 1.0-kg block is pushed up a rough 22° inclined plane by a force of 7.0 N acting parallel to the incline. Determine the magnitude of the force of friction acting on the block
net displacement of an object equal to zero
Two astronauts are 1.0 m apart in theirspaceship. One speaks to the other. The conversation is transmitted to earth via electromagnetic waves.
A uniform 4.50 kg square solid wooden gate 2.00 m on all side hangs vertically from a frictionless pivot at the center of its upper edge. A 1.00 kg raven flying horizontally at 4.50 m/s flies into this door at its center and bounces back at 2.00 m/s ..
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