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The open circuit terminal voltage of a battery is 12.6 Volt. When a resistor R = 4.00 ohm is connected between the terminals of the battery, the terminal voltage of the battery is 10.4 Volt.
Compute the internal resistance of the battery?
A wave is moving along a string. The equation giving the displacement y of a point at coordinate x and at time t has the form y = 0.2cos(4pi(x)/5-20pi(t)), Calculate the frequency and the speed(m/s) of the wave
A 2 micro-farad and a 5 micro-farad capacitors were connected inseries to a 12 volt battery. After the capacitors were fully charged, the battery was disconnected. The capacitors were connected in parallel. Find the charge on each capacitor in the..
A parallel-plate capacitor is made from two plates 12.5 on each side and 4.70 apart. What is the capacitance of this combination
How would you calculatethe magnitude of the electric force of an electron at a distance of4.5 x10-10 m from a nucleus? (Ialready have the magnitude of a proton's electric field as6.40e+11 N/C , given that the proton has a charge of 1.44E-17C.)
The electron and proton of a hydrogen atom are separated by a distance of 5.3*10^-11m. Find the magnitudes of the electric force and the gravitational force that each particle exerts on the other...Mass of electron is 9.11*10^-31 kg and 1.67*10^-2..
A spherical weather balloon is filled with hydrogen until its radius is3.00m. Its total mass including the instruments it carries is10.0kg. Find the buoyant force acting on the balloon
A disabled tanker leaks kerosene (n = 1.20) into the Persian Gulf, creating a large slick on top of the water (n = 1.30). If you are looking straight down from an airplane, while the Sun is overhead, at a region of the slick where its thickness is 43..
A 105-kg water skier floating in a lake is pulled from rest to a speed of 14 m/s in a distance of 25m. What is the net force exerted on the skier, assuming his acceleration is steady.
A uniform disk of mass 0.70 kg and radius 7.0 cm is mounted in the center of a 10 cm axle and spun at 800 rev/min. The axle is after that placed in a horizontal position with one end resting on a pivot. The other end is given an initial horizontal..
a helicopter is using a steel cable to lift a 2200 kg jeep. the unstretched length of the cable is 12m and its radius is 5.0mm. by what amount does the cable stretch
A bowling ball, which can be treated as a solid sphere with a diameter of 21.6 cm and a weight of 33 kg, The kinetic energy of the bowling ball is
a girl is sledding down a slope that is inclined at 30ordm with respect to the horizontal. the wind is aiding the
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