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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.
Sally and Sam are in a spaceship that comes to within 18,000 km of the asteroid Ceres. Determine the force Sally experiences due to the presence of the asteroid
A sailboat is heading directly north at a speed of 18 knots (1 knot = 0.514 m/s). The wind is blowing towards the east with a speed of 10.4 knots. what is the magnitude of the knots
A nucleus moving at 0.6c through the lab decys, emitting a photon in the forward direction. With what speed does the photon travel
We can approximate an electron moving in a nanowire as a one-dimensional in?nite square-well potential. What are the three lowest energy levels of the electrons
When light of wavelength 370 nm falls on a barium surface, electrons having a maximum kinetic energy of 0.86 eV are emitted. the frequency corresponding to the cutoff wavelength
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Determine the average angular speed (in rad/s) of this pulsar
A ball is thrown from the ground with a speed of 30m/s at an angle of 55 degree above the horizontal. If we neglect air resistance, How far from where it is thrown will the ball land
two charged conducting spheres of radii a and b are connected to each other by a wire. what is the ratio of electric
A 2.46×10^4 rocket blasts off vertically from the earth's surface with a constant acceleration. Throughout the motion considered in the problem, suppose that remains constant. Inside the rocket, a 15.10 instrument hangs from a wire that can support a..
A galvanometer has an internal resistance of 31 Ω and deflects full scale for a 45-mA current. Determine the value of this resistor which makes a voltmeter give a full scale deflection of 300V
The loaded cab of an elevator has a mass of 1.7 x 103 kg and moves 239 m up the shaft in 19 s at constant speed. At what average rate does the force from the cable do work on the cab.
You make a capacitor by cutting the 15.5 cm--diameter bottoms out of two aluminum pie plates, separating them by 3.40 mm, What's the capacitance of your capacitor
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