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If the maximum speed of photoelectrons through a photoelectric circuit is 9.37 x 10^5 m/s , What is the cutoff potential required to stop the current from flowing through the circuit. (Hint: can you find what the kinetic energy of those electrons will be?)
Find the torque of each wheel in a car? The car mass is (3400 lb), The acceleration is (-12m/s^2), and Diameter of the wheel is 28"
The alien attaches a 2kg object connected to a spring to the ceiling of his spacecraft. When the spaceship is accelerating at 5m/s 2 upward, the spring extends 0.1m. How much does the spring extend when the spaceship is accelerating at 15m/s 2 upw..
A 2.00-g lead bullet at 34.9°C is fired at a speed of 2.50 x 102 m/s into a large, fixed block of ice at 0°C, in which it becomes embedded. What is the final temperature of the bullet in °C?
A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate how high it goes and how long it is on the air before it comes back to his hand
At the bottom of the slope, the path levels out and become horizontal, the snow becomes less icy, and the skier begins to slow down, coming to rest in a distance of 160.00 m along the horizontal path.
Mr. Smith is on top of a building launching water balloons. Let's assume he is 15 m above the ground and he is launching them at an angle of 30o above the horizon with a speed of 20 m/s. Compute how long will the balloons be in the air
The interaction time ?t is 34 milliseconds. Calculate the final speed of the ball in m/s, to 2 sf.
The hoist has a 5-year life and an estimated salvage value of $1,394. Installation costs were $2,841, and freight charges were $852. Carleton uses straight-line depreciation.
A hydrogen atom that is initially at rest absorbs a photon with energy of 49.4 eV. What is the momentum of the atom after it absorbs the photon?
Two small charges with a mass of 1.0 g each are connected by 2.0-cm-long insulating rod of negligible mass. What is the dipole moment of the rod?
Discuss the microscale effects that can contribute to the failure of composite materials. Include aspects of interfacial bond failure, load transfer around broken fibers, and so on.
A 843 kilogram car stopped at an inter section is rear-ended by a 1820 kilogram truck moving with a speed of 17.0 m/s. determine the final speed of both vehicles after the collision
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