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A skin diver is 2.1m below the surface of a lake. A bird flies overhead 7.2m above the surface of the lake. how far above the diver does it appear to be
An incident x-ray photon is scatterted from a free electron that is initailly at rest. What is the magnitude of the electron after its collision
A bullet is fired from at a shooting range. The bullet hits the ground after 0.32 seconds. How far did it travel horizontally and vertically in this time
Light from an argon laser strikes a diffraction grating that has 5395 grooves per centimeter. Determine the wavelength of the laser light
Consider the RC-circuit with R = 3 k%u03A9, C = 100 %u03BCF, and E = 12 V and a switch. At t = 0 the capacitor is empty and the switch is closed to the charging begins. Calculate the time constant o
A block of metal is placed on a top of a half-sphere made of ice. The block slides on the half-shpere down to a height (h) above the ground, What is the force exerted by the half-sphere on the block
When ultraviolent light with a wavelength of 262nm falls upon a clean metal surface, What is the photoelectic threshold wavelength for this metal
A 220 ohm resistor, 0.400 H inductor, 6.00 microF capacitor, and voltage source of amplitude 30.0 V and angular frequency 230 rad/s are connected to form an L-R-C series circuit. What is the current
The Tevatron at the Fermi National Laboratory can accelerate protons to a kinetic energy of 1 TeV. In one particular experiment the kinetic energy of the protons is 650 GeV. What is the de Broglie w
Starting from rest, two skaters "push off" against each other on smooth level ice, where friction is negligible. One is a woman and one is a man. find the recoil velocity of the man relative to the
An artificial satellite is in a circular orbit around a planet of radius r = 5.55 x 103 km at a distance d=520km from the planet's surface. What is the average density of the planet
A flutist assembles her flute in a room where the speed of sound is 342m/s . When she plays the note A, it is in perfect tune with a 440Hz tuning fork. How many beats per second will she hear if she
In the photoelectric effect, the maximum wavelength for electrons to be emitted from a surface is 686 nm. What is the speed of the emitted electrons
When laser light of wavelength 633.3nm passes through a diffraction grating. thef irst bright spots occur at +- 18.4 degree from the central maximum, At what angle do the second bright spots occur
A 4700000 kg spaceship moves away from Earth with a speed of 0.71 c. What is the magnitude of the ship's classical momentum
Donovan Bailey set a world record for the 100-m dash on July 27, 1996. If observers on a spaceship moving with a speed of 0.7705 c relative to Earth saw Donovan Bailey's run
A long, straight wire carries a current of 51 A. The magnetic field produced by this current at a certain point is 9.5 x 10-5 T. How far is the point from the wire
Just as you are about to step into a nice hot bath, a small earthquake rattles your bathroom. What is the speed of the waves that are reflecting back and forth inside the tub to create the standing wa
On earth, two parts of a space probe weigh 13500 N and 3790 N. These parts are separated by a center-to-center distance of 14.4 m, Find the magnitude of the gravitational force
Take element Z = 80 from the periodic table. Ionize it 79 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 9 state? What is the energy of the Hydrogen atom
A hot-air balloon plus cargo has a mass of 1740kg and a volume of 11730m3. What is the density of the hot air in the balloon
A hydrogen atom in its first excited state absorbs a photon with an energy of 59.0 eV, What is the kinetic energy of the ejected electron
The secondary voltage of an ignition trans- former in a furnace is 14 kV. When the primary operates at an rms voltage of 103 V, What is the impedance in the sencondary
A stationary detector sends out a sound wave of frequency 0.315 MHz toward an approaching car. What is the frequency of the waves reflected back to the detector