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Monochromatic light falls on two verynarrow slits 0.048mm apart. Successive fringes on a screen5.00m away are 6.5cm apart near the center of the pattern. What is the wavelength and frequency of the light?
A sample of a radioactive isotope is measured to have an activity of 237.1 mCi. how many nuclei of the isotope are there at this time
A copper washer is to be fit in place over a steel bolt. Both pieces of metal are at 29.7°C. to what temperature must the washer be raised so it will fit over the bolt
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. If a positron and electron are held a distance of 0.900 pm apart and then both are released from rest, when they are 0.324 pm away ..
A gas is orignally contained within a container of volume 100m^3 and is held at a pressure of 1 atmosphere and temperature of 15C, How many moles of gas were orignally contained
A 2.4mm -diameter sphere is charged to -4.5nC . An electron fired directly at the sphere from far away comes to within 0.32mm of the surface of the target before being reflected. What was the electron's initial speed
For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air. determine the recoil velocity
A 295 Kg piano slides 4.1 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
A lighthouse sweeps its beam of light around in a circle once every 6.0 s. To an observer in a spaceship moving away from Earth, What is the speed of the spaceship relative to Earth
An Earth satellite moves in a circular orbit 665 km above the Earth's surface. The period of the motion is 97.8 min. What is the magnitude of the centripetal acceleration of the satellite
FInd the quantities and volume of liquid in each tank and predicting the damage or danger caused in the process.
A vertical scale on a spring balance reads from 0 to 225. The scale has the length of 11.5 from the 0 to 225 reading. A fish hanging from the bottom of the spring oscillates perpendicularly at a frequency of 3. Ignore the mass of the spring, what ..
A point is located at r = 42mmi - 71mmj + 90mmk. It is first rotated about the x-axis by +82o, and then rotated about the z-axis by -35o
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