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A radioactive atom is moving with respect to the laboratory (which is the Earth frame) at the speed of 0.8c in the +x direction. the atom emits an electron with the speed of 0.9c in the reference frame of the atom, determine the velocity of the electron measured by a laboratory observer when:
A) The electron ejected in the +x direction.
B) The electron is ejected in the - x direction.
While exploring a castle, Exena the Exterminator is spotted by a dragon who chases her down a hallway. how much time does it take her to close the door
find the minimum thickness for constructive interference of visible light with a wavelength of 595 nm.
A "biconvex" lens is one in which both surfaces of the lens bulge outwards. What is the focal length f of this lens in air
A pendulum clock keeps time by the swinging of an attached mass at the end of a massless string of length L, What is the angular position of the mass at t = 0.246s
Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons, Find the resulting surface charge density
A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is known as a couple moment.
A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon
Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Calculate the magnitude and duration of the acceleration
A piece of a cloth is found to contain 15% of the C-14 present in a similar material today. How old is this cloth
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). What is the distance between the first-order red and blue fringes? (d=)
An electron and a proton are each placed at rest in a uniform electric field of magnitude 546 N/C. Compute the speed of each particle 52 ns after being free.
On a cool morning, when the temperature is 16 deg Celsius, you measure the pressure in your car tires to be 20.0 psi. After driving 40 mi on the freeway, temperature of your tires is 56.0 deg Celsius. What pressure will your tire gauge now show.
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