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An old wooden tool is found to contain only 18% of 146C that a sample of fresh wood would. How old is the tool
A 24.5 kg child is standing on the outer edge of a merry-go-round which has moment of inertia 989 kg*m2 and radius 2.40m. Find the angular velocity if the child moves to a final position
1.8 kilograms of water are changed, from ice at 0ËšC into liquid water at 0ËšC determine the change in mass of the water
Some birthmarks can be removed by exposure to 585 nm laser light. Pulses are strongly absorbed by hemoglobin in the capillaries in the birthmark, What is the power of the laser pulse
This question requires two answers. The isotope 12N undergoes radioactive decay to form 12C. What charged particle is emitted in the decay process
A 24V battery is connected in series with a resistor, R=4 ohms and an inductor L=2H. What is the energy stored in the inductor
A square loop of wire with sides of length l=0.15m is pulled horizontally to the right at a constant speed of 5.0m/s into a perpendicular magnetic field of strength B=0.37T directed into the page
A circular loop of wire of resistance R= .500 ohms and radius r=8.00cm is in a uniform magnetic field out of the page, Find the rate at which the field is changing
The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 22.0 °C the air gap between the rods is 1.99 x 10-3 m
Two resistors of 7.0kohms and 10.0kohms are connected in series. A 4.0kohm resistor and a 9.0kohm resistor are connected in series to each other, What is the equivalent resistance of the resistors
A wave pulse travels down a slinky. The mass of the slinky is m = 0.93 kg and is initially stretched to a length L = 6.8 m. What is the wavelength of the wave pulse
The speed of an object is known to be 3.0 X 108m/s. You measure the velocity of the object during an experiment, find the percent error associated with these two values
Two gases are in two separate chambers. The gas in one of the chambers has a temperature of 75 degrees Celsius. Which of the gases has more kinetic energy
These two questions should take less than five minutes to answer. Calculate the angle for the third-order maximum of 610 nm wavelength yellow light falling on double slits separated by 0.100 mm
To recharge a 3.7V Lithium-ion battery, a battery charger must move 1320 mAxh of charge from the negative terminal to the positive terminal
A wheel is rotating freely at angular speed 270 rev/min on a shaft whose rotational inertia is negligible. What fraction of the original rotational kinetic energy is lost
Two kg of propane are initially saturated liquid at 0 C. It undergoes an isentropic process that cools it to -40C. What is the volume after the cooling
A cancer treatment called the gamma knife uses focused 60Co sources to treat tumors. Each 60Co nucleus emits two gamma rays, Determine the effective radiation dose received by the tumor
The mass of the nuclide 16/8 O is 15.994 915 u. Determine its average binding energy per nucleon
Incomplete fracture (simple fracture) of the femur
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. How far is each spectator from the player
Ecosocial theory provides health professionals with an opportunity to understand why populations react biologically to a social condition. It is these interactions between biology and social cond
a magnetic field is perpendicular to .04 by .06 m a rectangular coil of wire that has one hundred turns in a time of .05s, Calculate the change in the magnetic field
Sound 1 has an intensity of 35.0 W/m^2. Sound 2 has an intensity level that is 2.7 dB greater than the intensity level of sound 1
If all pairs of homologous chromosomes lined up non-randomly along the metaphase plate in meiosis