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You are trying to hit a cart of mass 0.3 kg on a frictionless table with a toy projectile launcher. At what angle relative to North do you want to fire the projectile
LIght of wavelength 587.5 nm illuminates a single slit. THe distance from teh single slit to the screen is given to be 1.5m. what is the angle from the central peak to the fourth minima
An alpha particle (q = +79e, m = 6.68 x10^-27kg) is fired from a distance of 10 cm at a gold nucleus (q = +79e). find the change in electric potential for the alpha partical
An unknown nucleus has twice the volume of a nucleus with 62 nucleons. What is the atomic mass number of the unknown nucleus
A cylinder contains 2 moles of an ideal monatomic gas that is initially at state A with a volume of 0.01 m^3 and a pressure of 4.0x10^5 Pa. Is this device a refrigerator or a heat engine
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
During a ride on the gravitron, a person finds herself stuck against the wall as she spins around with a frequency of 26.00 rpm, What is the diameter of the gravitron ride
Consider a ramp inclined at an angle of 11.00 degrees from the horizontal. how long does it take for the box to come to a stop
what is the magnitude of the electric field strength E such that an electron, What elecric field strength E is required if the electron is replaced by a proton
If a person eats a popsicle of mass 0.045 kg and temperature -10 C, then how much energy does this person use
A high-voltage transmission line with a resistance of 0.28 omegacap.gif/km carries a current of 1040 A. What fraction of the transmitted power does this loss represent
A typical half life calculated from the simplest such theory, the SU(5) model, is about 10^32 years. How many protons are in all the oceans on earth
A steel cable with a total length of 27.7 m and total mass of 91 kg is connected to two poles. Calculate the wavelength of the resulting wave on the cable
A 600 Hz sound wave travels through a gas. If the wavelength of the sound is 0.4 m, what is the speed of sound in the gas
An 840 kg car needs to round a level curve with a radius of 23m.The driver wants to proceed at 56 kph. How much work does the friction force do on the car
A 55-kW radio station broadcasts its signal uniformly in all directions. What is the average intensity of its signal at a distance of 250 m from the antenna
A bismuth target is struck by electrons, and x-rays are emitted, Estimate the M- to L-shell transitional energy for bismuth when an electron falls from the M shell to the L shell
What percentage of the input energy needed to pump the water up to the top tank could you recover from the turbine as the water ran back to the bottom tank, two 15,000 litre water tanks and put one
A device used in radiation therapy for cancer contains 0.52 g of cobalt-60 (59.933 819 u). Determine the activity (in Bq) of the radioactive material
Two isotopes of a certain element have binding energies that differ by 4.7540 MeV. The isotope with the larger binding energy contains one more neutron than the other isotope. Find the difference in
A photon whose energy is 1.3 x 10^-14 J is scattered off an electron at an angle of 50 degrees
A charge of -4 x 106 coil is moving at 800 m/s along a path parallel to a horizontal straight wire and is 20 cm above it. find magnitude and direction of the force on the charge
A -10.5 nC point charge and a + 21 nC point charge are 16.5 cm apart on the x- axis. where the electric potential is zero
Suppose a hiker of weight W climbs a mountain of height H with an efficiency n on a cool day with temperature TA, How many food calories are required
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current