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The allowed energies of a simple atom are 0.0 {\rm eV},4.0 {\rm eV},and 6.0 .{\rm eV}.
1. What wavelengths appear in the atom's emission spectrum?
2. What wavelengths appear in the atom's absorption spectrum?
while trying out for the position of pitcher on your high school baseball team you throw a fastball at 78.4 mih toward
In a movie, Tarzan evades his captors by hiding underwater for manyminutes while breathing through a long, thin reed. calculate the deepest he could have been
What is the minimal mass of helium (density 0.18 kg/m^3) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket
and how would we improve this product? what would we change? how ould that impact the final product performance and
find the period of this oscillation.
Each railroad car has a mass of 91000 kg. Seven coupled railroad car moving with a speed of 4.9 m/s collide, What is the speed of all ten cars after the collision
A satellite is orbiting the Earth at a distance of 3.31RE and with a speed of 3.59 km/s. With what speed would the satellite hit the Earth's surface if somehow it suddenly stopped and fell to Earth? Ignore air resistance.
light of wavelength 550nm is incident normally on a diffraction grating. the seventh order maximum of the diffraction
Can you explain the differences between elastic collisionand inelastic collesion with some examples? I dont fully understand law of coservation. can you givesome exaples about objects being conserved?
a 2000 kg car is slowed down uniformly from 18.0 ms to 7.00 ms in 4.40 s.a what average total force acted on the car
A spring is resting vertically on a table. A small box is dropped onto the top of the spring and compresses it. Determine the magnitude of the spring's displacement at an instant when the acceleration of the box is zero
A window air conditioner unit absorbs 9.85 104 J of heat per minute from the room being cooled and in the same time period deposits 1.47 105 J of heat into the outside air. What is the energy efficiency rating of the unit
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