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A test charge is located at a distance of 2.5 × 10-2 m from a charge of 6.4 × 10-5 coulombs. Find what is the electric field at the test charge? (k = 9.0 × 109 N•m2/c2.
a voltmeter is used to read the potential difference accross the poles of a battery.the battery is rated at 20 v. the
250 cm3 of hot tea at 89degc are poured into a very thin paper cup with 10 g of crushed ice at 0degc. calculate the
A 98.8-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is ?k = 0.596. What is the magnitude of the frictional force
One fires a bullet (m=50g) at a block of wood (m=2kg) resting on a frictionless surface. How much energy is lost
A person pushes the shopping cart with a force of 100 N acting down at 45 degrees. Of the cart travelled at a constant speed of 1.00 meters per second what is the value of combined retarding force acting horizontally on the cart due to friction an..
A source of AC voltage with a frequency of 60 Hz, Find the shortest time in seconds required for the voltage across the light bulb to reach 170 V
A circuit consists of an ideal ac generator, a 25 µF capacitor, and an 90? resistor, all connected in series. Find the average power supplied by the generator
A 10.7 kg bucket of water is suspended by a very light rope wrapped around a solid uniform cylinder 0.32 m in diameter with mass 14.2 kg. Calculate the torque due to the bucket of water
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. Find the average power of each pulse
q1. a horse races once around a circular track in a time of 118s with a speed of 17 ms. what is the radius of the
Three capacitors are connected in parallel. Each has plate area A = 1.00×10-2 m2 and plate spacing d = 9.00×10-4 m. What must be the spacing of a single capacitor of plate area A if its capacitance equals that of the parallel combination?
A rail car that weighs 28 N is accelerated at 3.6 m/s/s for 2.2 seconds. How much work is done on the rail car
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