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Two point charges 3.0cm apart have an electric potential energy -130J . The total charge is 15nC. What is the lesser charge? what is the larger charge?
Calcium has a work function of 2.8 eV. If light of frequency 4.3 1015 Hz strikes the surface of calcium, what is the energy of the ejected electrons
If you place the box on a dolly of mass 5.3 {rm kg} and with coefficient of rolling friction 1.3×10−2, illustrate what horizontal acceleration would that 171 {rm N} force provide?
A resistor with resistance 14M? is connected in series with a capacitor with capacitance 1.0?F and a battery with emf 13.5.0V. what is the time constant
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0 degrees above the horizontal. The rocket is fired toward the ground 11.0-m high wall, which is located 27.0 m away. By how much does the rocket clear the top of the wa..
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
The filament of an incandescent light bulb is made of tungsten which has a thermal coefficient of resistivity of ? = 4.4 x 10-3K-1, Write an equation for the initial current, I0, that flows through the filament when it is initially turned on
A 1100kg automobile travels at 80km/h. What net work would be required to bring it to a stop
What is magnitude of the speed of the boat relative to a stationary shore observer. A person stands at a point that is 4 m from one of the speakers and 4.4 m from the other. Does the person hear the tone? Explain.
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm
A charge of -3.9 micro-coulombs is launched from the positive plate of a large capacitor to the negative plate.
A custom car built for pretentious people has two brass horns that are supposed to produce the same frequency, What beat frequency is produced
A person pulls a toboggan for a distance of 40.1 m along the snow with a rope directed 21.3 ° above the snow. How much work is done on the toboggan by the tension force
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