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when a photoelectric surface is illuminated with f 437 nm , the stopping potential 1.67 v
a) what is the work function of the metal in eV?
b) what is the maimum speed of the ejected electrons?
A certain waffle iron is rated at 0.95 kW when connected to a 120-V source. What current does the waffle iron carry
An intergalactic rock star bangs his drum every 1.70 s. How fast is the rock star moving relative to the earth
A random sample of 42 college graduates revealed that they worked the average of 5.5years on the job before being promoted. The population standard deviation was 1.1 years. Using 0.99 degree of confidence, what is the confidence interval for the po..
A basketball of mass 270 g and radius 17 cm rolls with an initial speed of 2.5 m/s. What distance along the ramp will the ball travel before it comes to a stop
Two circular disks spaced 0.50 mm apart form a parallel-plate capacitor. What are the diameters of the disks
The moving non-conducting belt of a Van de Graaff generator carries 10 ?C of charge up to the metal sphere each second. What minimum power must be supplied to the generator
A car travelling in a large circle passes by the motorcycle that is travelling in a straight line from North to South. Both of their speedometers read 10m/s.
A screen is placed 52.4 cm to the right of the converging lens. A diverging lens is placed between the converging lens and the screen. What is the focal length f2 of the diverging lens
A long solenoid with 10.0 turns/cm and a radius of 7.00 cm carries a current of 20.0 mA. What is the magnitude of the magnetic field there
As in the previous problem (43), a solid block is suspended from a spring scale. If the reading on the scale when the block is completely immersed in water is 25.0 N, what are the block's volume and density
A swimmer runs horizontally off a diving board with a speed of 3.58 m/s and hits the water a horizontal distance of 1.79 m from the end of the board. How high above the water was diving board.
A light ray with an incident angle of 38.5 degrees crosses from air to a solution and has an angle of refraction of 21.9 degrees. What is the speed of the ligth ray in the solution
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