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As a positron moves through a region of space, its speed increases from 2.80 106 m/s to 8.00 106 m/s. The electric force is the only force acting on the positron.
(a) Did the positron move from a higher potential or a lower potential?
(b) Across what potential difference did the positron travel?
If a 4-engine jet accelerates down the runway at 5m/s2 and 3 of the jet engines fail, how much acceleration will the other one produce.
An ideal gas consists of n moles of diatomic molecules that rotate but do not oscillate. What is the change in the mean free path of the molecules
Two loudspeakers are vibrating in phase. They are set up as point C is located. Assume the speed of sound is 342 m/s. The speakers play the same tone. What is the smallest frequency that would produce destructive interference at point C.
Consider a stack of paper 3.0 meters high. each sheet of paper is the stack has a thickness of 0.01 centimeter
An air-track glider attached to a spring oscillates between the 8.00 mark and the 69.0 mark on the track. The glider completes 10.0 oscillations in 40.0. What is the maximum speed of the glider
In the figure below, the converging lens' focal length is 13 cm, d = 18 cm, and the diverging lens' focal length is -12.6 cm, How tall is the image formed by the diverging lens
Four copper wires of equal length are connected in series. The cross sectional areas are 1 cm2, 2 cm2, 3 cm2, and 5 cm2, What is the voltage across the 2 cm2 wire in units of volt
A thin 7.3-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. What is the frequency of the rod's vibration
A 800kg car pushes a 1800kg truck that has a dead battery. When the driver steps on the accelerator, What is the magnitude of the force of the car on the truck
A generator rotates at 95Hz in a magnetic field of 0.025T . It has 650 turns and produces an rms voltage of 180V, What is the peak current produced
A woman inside an elevator is standing on a scale. Before the elevator starts moving the scale shows 50 kg, calculate the acceleration of the elevator if after the elevator starts moving upward the scale reads 70kg. What will the reading of the sc..
A worker pushes a sled with a force of 50 N over a level distance of 7.0 m. what net work is done on the sled
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