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After a plant or animal dies the 14C content decreases with a half-life of 5730 years. what is the age (in years) of the ancient site
The "size" of the nucleus in Rutherford's model of the atom is about 1.00 fm = 1.00E-15 m. Determine (in MeV) the electrostatic potential energy of the pair of protons
If this radiation is directed at a crystal, the first-order maximum in the reflected radiation occurs when the angle of incidence is 2.05o. What is the spacing between reflecting planes in the crysta
A large tub rests at the edge of a table 1m high. The tub is full, and is 2m tall with an area of 1000cm^2. Determine the speed of the water as it leaves the side
Calculate the energy of the electron in the ground state of double ionized lithium, which has an atomic number Z = 3
In the H atom the radius of orbit B is 16 times greater than the radius of orbit A. What is the total energy of the electron in orbit B
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2) at 2.03×105 Pa and 20.7°C? The dimensions of the chamber are 3.00 m × 6.00 m × 8.30
Fuel systems of modern cars are designed so thermal expansion of gasoline doesn't result in wasteful and polluting fuel spills. As an engineer, How large an expansion tank do you specify
a snowboarder that weighs 80 kg starts from rest at the top of the hill with a downward slope of 30 degrees from the horizontal. What is the coeffient of kinetic friction
A plane wave of monochromatic light is incident normally on a uniformly thin film of oil that covers a glass plate. find the thickness of the oil film
imagine 1.0 stock tank barrel oil and 1000 scf gas that have been produced were somehow put back to reservoir at certain condition of pressure, what is the oil formation and solution gas oil ratio
What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 375nm
A 54.00-cm guitar string under a tension of 55.000 N has a mass per unit length of 0.10000 g/cm. What is the highest resonant frequency
A 1.2m -long, 900g rope pulls a 9.0kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.0m/s^2, How much force pulls forward on the block of ice
A 61kg skydiver can be modeled as a rectangular "box" with dimensions 21cm x 37cm x 1.8m. What is his terminal speed if he falls feet first
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 71.5 dB. What total sound intensity engulfs you
The area of a typical eardrum is about 5.0 × 10?5 m2. Calculate the sound power incident on an eardrum at the threshold of pain
One of the loudest sounds in recent history was that made by the explosion of Krakatoa on August 26-27, what was the decibel level on Rodriguez Island
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them, What is the speed of the second train
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
A two-slit pattern is viewed on a screen 1.06 m from the slits. compute the total width of the central bright fringe
A thin uniform rod has a length of 0.500m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end, What is the mass of the bug
write an algebraic expression for the total pressure on the diver at that point and calculate the total pressure on the diver in atms
A 250MW laser pulse is focused with a lens to a diameter of 2.5?m. What is the laser beam's electric field amplitude at the focal point
Potassium is an essential element that normally comprises about 0.30% of a person's body mass. What's the potassium activity in a 69kg person