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When ultraviolet light with a wavelength of 250 nm is incident on a particular metal surface, electrons are emitted via the photoelectric effect. The maximum kinetic energy of these electrons is 1.44 eV.
(a) What is the work function of the metal?
eV
(b) What is the threshold frequency for this particular metal?
Hz
A hand-pumped water gun is held level at a height of 0.84 m above the ground and fired. Find the gauge pressure of the water gun's reservoir
What will most likely cause arcing at the switch contacts.
A 310kg wooden raft floats on a lake. When a 75kg man stands on the raft, it sinks 3.20cm deeper into the water. When he steps off, the raft vibrates for a while.
Find the moment of inertia of the plate for an axis that lies in the plane of the plate, passes through the center of the plate, and is perpendicular to the axis in part A
An object, at the top of a very tall building, is released from rest and falls freely due to gravity. Neglect air resistance and calculate the distance covered by the object between times t1 = 5.57 s and t2 = 7.59 s after it is released.
A rectangular block of ice 7.00 m on each side and 1.80 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. How high does the top of the ice block float above the water level.
An aircraft weighing 991 N is accelerated at 11 m/s2 for 13 seconds, at which time the aircraft launches. How much work was done on the aircraft
An LC circuit has a 7.88 mH inductor. The current has its maximum value of 0.73 A at t=0 s, What is the value of the capacitance
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
A person who weighs 715 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. find the area of contact between each tire and the ground
An RLC circuit is connected to a 220 V 60 Hz ac voltage source. Determine the power loss in the circuit
A 5.25 kg ball of clay is thrown downward from a height of 2.79m with a speed of 4.41 m/s onto a spring with k=1530 N/m. The clay compresses the spring a certain maximum amount before momentarily stopping.
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