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Rainbows are formed when light strikes raindrops and is reflected and refracted as shown. The figure shows a cross section of a spherical raindrop
Calculate the time required for the particle to reach the force center from a distance d.
Two railroad cars, each of mass 6500kg and traveling 95 km/h collide head-on and come to rest. How much thermal energy is produced in this collision?
The lifetime of a molecule in a certian electronic state is 10e-10 s. What is the uncertianty in energy of this state? Give the answer in J and in J/mol.
Two very narrow rays of light of different colors are incident on a glass plate at different angles.
Ignoring frictional forces and air resistance, what is the value of "h", the highest position the car reaches above the bottom of the hill?
"A 48.5 kg student climbs a 5.90 m long rope and stops at the top. What must her average speed be in order to match the power output of a 140 W lightbulb?"
The launching mechanism of a toy gun consists of a spring of unknown spring constant. If the spring is compressed a distance of 0.139 m.
The so-called "hydrogen alpha (Ha) line" is a specific wavelength of red light caused by excited atomic hydrogen. It is frequently used when studying the Sun.
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 2.00 cm, and the toy is released.
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole.
A multiple ray projector, with the rays parallel, strikes the prism from various angles and sides. How would you obtain total internal reflection?
If the two particles stick together during the collision, find the momentum, velocity, and kinetic energy of the system after the collision.
An astronaut loses contact with the hull of a space station and finds himself floating 16m from the station with zero velocity relative to it.
A small particle slides along a frictionless wire. If the particle's speed at point A is 8.85m/sec how fast is it moving at point B if it must go up a 2m.
Your company is designing a desk-top sized proton accelerator, using a 500MN/C superconducting magnet to hold the protons in a circular path.
What is the energy of the photon emitted when the electron of a hydrogen atom makes a transition from the quantum level n=3 to the level n=1?
At what value of x will the body have a kinetic energy of 8.0 J? What is the maximum kinetic energy attained by the body between x = 0 and x = 5.0 m?
A 4.5 kg block is accelerated by a compressed spring whose spring constant is 640 N/m. After leaving the spring at the spring's relaxed length.
How close would two stationary electrons have to be positioned so that their total mass is 8 times what it is when the electrons are very far apart?
Suppose that the electric potential energy lost by the system is carried off by a photon that is emitted during the process. What is its wavelength?
What is the difference in energy between the two energy levels that give rise to this line? Express in joules and eV.
The mass of the radiologist is 67 kg. How much energy has she absorbed? Answer in mJ.
Calculate the energy density in the electric field near the surface of the sphere?
Determine the angle with respect to the horizontal (angle of deviation) of the beam as it emerges from the prism.