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Electrons in a photoelectric effect experiment emerge from an aluminum surface with a max kinetic energy of 1.30 eV. What is the wavelength of the light?
A physicist has developed a device that generates a beam of alpha particles (each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons).
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
A metal sphere A has charge Q. Two other spheres, B and C, are identical to A except they have zero net charge. A touches B, then the two spheres are separated
A bullet of mass 0.0022 kg initially moving at 496 m/s embeds itself in a large fixed piece of wood and travels 0.64 m before coming to rest. Imagine that an acceleration of the bullet is constant.
At rest, the car's horn sounds at a frequency of 455 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 427 Hz. What is speed of the car.
It's possible to use the ideal-gas law to show that the density of the earth's atmosphere decreases exponentially with height, What is the weight of a column of air
A woman stands on a scale in a moving elevator. Her mass is 60.0 kg, and the combined mass of the elevator and scale is an additional 802 kg, What does the scale read (in N) during the acceleration
What angle does water surface make with the horizontal
How much time has elapsed between the two measurements.
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
The hunter uses a small powerboat that moves at a maximum speed of 9.5 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
A 30 g ball of clay is thrown horizontally at 20 m/s toward a 1.7 kg block sitting at rest on a frictionless hi surface. The clayts and sticks to the block. What is the speed of the block and clay right after the collision?
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