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A beam of electrons is incident on two slits separated with a distance of2.0×10-6 m. The first-order bright fringes appear on a distant screen at an angle of 0.021 degrees from the central interference maximum.
Compute the wavelength.
What is the momentum of the electrons?
Compute the kinetic energy of the electrons.
A block of mass .250 kg traveling at (1.0 m/s)y hits a second block with a .375 kg mass travelling at (1.2m/s)x, What is the velocity of the 1st blcok after they hit each other
A spaceship is flying directly away from Earth at a speed of 0.730c, and the captain's family at home on Earth broadcasts their well wishes on the Family Radio System frequency of 462.5625 Mhz.
When a spacecraft travels from Earth to the Moon, the gravitational force from Earth initially opposes this journey. How far from Earth must the spacecraft be for the gravitational forces from the Moon and Earth to just cancel
Suppose you hold a f=5.0 cm magnifying glass 3.0 cm from a 2.0 mm high ant. how large is the image of the ant
A proton and an electron are moving due east in a constant electricfield that also points due east. The electric field has amagnitude of 8.0x104 N/C. Determine the magnitude of the acceleration of the proton and the electron.
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.7-kg cart that is held initially at rest. What is the total momentum of the system of the two carts at this instant
A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. What is the smallest value of the coefficient of friction
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 131 kg and radius R = 80.5 cm. Calculate the work done by the torque during this time
After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the cooler contained 7.20 kg of ice and the temperature of the ground was 40.5°C, calculate the energy that is required to melt all the ice at 0°C. Th..
A dancer completes 2.2 revolutions in a pirouette. What is her angular displacement
A 13000 kg railroad car travels alone on a level frictionless track with a constant speed of 17 m/s. A 6500 kg load, originally at rest, is dropped onto the car. What will be the car's new speed.
A 2 kg brick is dropped from the top of a building, 100 calories of heat energy is added to the brick due to the fall, how high is the building
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