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The same light is incident on 2 surfaces A and B and the emitted electron from A has 1.8*10-19 J more energy than from B. What is the difference in work function of 2 surfaces? Show all work.
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.05 cm, and a -2.42 µC charge is located at y = -1.30 cm. Find the total electric potential at the origin
Suppose a rocket launches with an acceleration of 33.0m/s2. What is the apparent weight of a 95-kg astronaut aboard this rocket
transverse waves are traveling on a 1 meter long piano string at 500 ms. if the points of zero vibration occur at
An earth satellite is observed to have a height of pergee of 210 Kilometers and a height of apogee of 1,200 kilometers. Find the period of the orbit
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
Two equal opposite charges are separated from each other with distance d create an electric dipole moment, Find the electric potential at point A at distance r from the midpoint of two charges
the starter motor of a car engine draws an electric current of 20.0 a from the battery. the copper wire to the motor is
A 2.75 m long board is used to slide a compressor a vertical distance of 75 cm. What is the Mechanical Advantage of the ramp made by the board
A typical digital cell phone emits radio waves with a frequency of 1.9 GHz. how many photons are emitted each second
A rectangular barge, 5 m long and 2 m wide, floats in fresh water. How much deeper would it go if there were a 500kg horse on it.
A tennis ball is struck at the base line of the court, 13.3 m from the net. The ball is given an initialvelocity with a horizontal component equal to 22.0 m/s at an initial elevation of 1.45 m
A grey kangaroo can leap a distance of 11.78 m on horizontalground. What is the minimum take off speed for such a leap
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