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A sample of wood from an archaeological excavation is dated by using a mass spectrometer to measure the fraction of 14C atoms. Suppose 120 atoms of 14C are found for every 1.5×1015 atoms of 12C in the sample.
Part A What is the wood's age?
how many electrons have been transferred. If a metric ton is 1.000 103 kg, how various 90 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton.
Though slow on land, the leatherback turtle holds record for the fastest water speed of any reptile: 9.78 m/s. It is also among the largest of reptiles. Assume the largest leatherback yet discovered were to swim at the top leatherback speed. If its k..
In an L-R-C series circuit, the resistance is 420 ohms, the inductance is 0.340 henrys, and the capacitance is 1.80×10?2 microfarads. What is the resonance angular frequency of the circuit
You can ignore air resistance. Explain how far from the point of firing does the other fragment strike if the terrain is level?
A 11-V battery is connected to three capacitors in series. The capacitors have the following capacitances: 3.6 µF, 11.1 µF, and 32.5 µF. Find the voltage across the 32.5-µF capacitor
How to compute the average force
what is the dimension of gravitational force and what is the dimension of acceleration
A girl sits fixed on a merry-go-round of mass M = 500 kg and radius R = 2 m. The merry-go-round is at first at rest and is free to rotate without friction.
A 5.29-kg ball hangs from the top of a vertical pole by a 2.09-m-long string. Calculate the angle, between 0° and 90°, that the string makes with the pole
A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, illustrate what is the new pressure of the gas?
An object with total mass mtotal = 14 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg, What is the magnitude of the velocity of the center of mass of the pieces after the collision
A 27.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 35.0° with the vertical, Neglecting friction, find the child's speed at the lowest position
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