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When light of wavelength 300 nm is incident upon potassium, the emitted electrons, due to the photoelectric effect, have a maximum kinetic energy of 2.03 eV. (a) What is the energy of the incident photon? (b) What is the work function for potassium? (c) What would be the stopping potential if the incident light had a wavelength of 430 nm? (d) What is the threshold wavelength for the photoelectric effect with potassium?
Suppose you do 457 J of work on 1.18 moles of ideal gas in a perfectly insulated container. By how much does the internal energy of this gas change.
The 1 kg block is tied to the wall with a rope. It sits on top of the 2 kg block. The lower block is pulled to the right with a tension force of 20 N. The coefficient of kinetic friction at both the lower and upper surfaces of the 2kg block is = 0..
instructions for ?nding a buried treasure include the following go 304.2 paces at 209? turn to 183? and walk 275 paces
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. How much torque does the flywheel exert on the machine
A uniform 2.15- kg spinning disk with a radius of 0.233 m is brought to rest by a brake-pad pressed against the side 0.149 m from the rotation axis. What frictional force was applied by the brake pad
q1. how numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k
The fundamental physical constant of quantum mechanics, h, has played an important role in each of the three theoretical advances (those relating to the blackbody spectrum, the photoelectric effect, and the structure of the H atom).
What is the magnitude of buoyancy force ?
Suppose a 5.40 m diameter telescope were constructed on the Moon, what minimum separation between two objects
The Sun is moving in a circular orbit around the center of ourGalaxy. The radius of this orbit is 3 x 104 light-years. Calculate the period of the orbital motion in years
A uniform drawbridge must be held at a 36.5 degree angle above the horizontal to allow ships to pass underneath. Find the magnitude of the force the hinge exerts on the bridge
an antelope is at a distance of 20.0 m from a converging lens of focal length30.0cm. the lens forms an image of the
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