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You have three identical charged spheres, each by a charge of 3.20 µC. You have arranged them so they are each at the corners of a square that gauges 3.4m on a side. Discover the magnitude of the electric field at the "empty" corner. (The corner with no charged sphere)
A parachutist and her parachuting equipment have the combined mass of 121 kg. Her terminal velocity is 5.30 m/s with the parachute open. Her parachute has a cross-sectional area of 35.80 m^2. The density of air at that altitude is 1.23kg/m^3. What is..
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the turns ratio Ns/Np of the transformer
A golf ball is struck off a tee (negligible height and air resistance) with initial velocity of 50 meters per second at an angle of 30 degrees above the horizontal. Illustrate what will be the vertical component of velocity after 2.5 seconds?
Sam, whose mass is 80kg , takes off across level snow on his jet-powered skis. The skis have a thrust of 250N and a coefficient of kinetic friction on snow of 0.1, What is Sam's top speed
In an RL circuit, the electromotive force is 3.1 V, the inductance is 17.3 mH, and the resistance is 9 ohms. Find the maximum value of the current
A 7.00 kg bowling ball collides head-on with a 2.00 kg bowlingpin, which was originally at rest. The pin flies forward with aspeed of 3.00 m/s. what was the initial speed of the ball
The Voyager I spacecraft moves through interstellar space with a speed of 8700m/s . The magnetic field in this region of space has a magnitude of 2.2×10?10T .Assuming that the 5.6-m long antenna on the spacecraft is at right angles to the magnetic fi..
An object is thrown straight up. Two seconds later it is still going upward and at that time its speed is 10m/s. What was the initial speed of the object? What is the highest height of the object?
an object weighs 15N in air and 13N when completely submergedin water. What is the volume of water displaced by the submerged object
two wheels of mass m and moment of inertia i are connected by a massless axle of length l. the system rests on a
An object 4.0 cm high is placed 20 cm to the left of aconverging lens with a focal length of + 8.0 cm. Adiverging lens with a focal length of – 12 cm is placed40 cm to the right of the converging lens. Describe the location,nature and size of the i..
A 140 g ball moving at 0.35 m/s in the + x-direction is subject to a 0.20 N force in the - y-direction for 2.0 s, Find the magnitude of the ball's momentum change
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