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An ancient club is found that contains 170 g of pure carbon and has an activity of 7 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.10 × 10-12. Note that the half life of carbon-14 is 5700 years and the Avogadro number is 6.02 × 1023.
A 22cm diameter cylinder that is 12cm long contains 30 g of oxygen gas at 21 degrees C. What is the reading of a pressure gauge attached to the tank
In a single slit diffraction pattern the intensity of the maxima
You are standing in air and are looking at a flat piece of glass (n = 1.52) on which there is a layer of transparent plastic (n = 1.61). Find the smallest possible nonzero value for the thickness of the layer
A 100 kg block is suspended from a string and immersed in water. The block has a volume of 0.02 m^3. The water density is 1000 kg/m^3. What is the buoyant force on the block
A circular saw blade 0.200 m in diameter starts from rest. Evaluate the angular acceleration and evaluate the angle through which the blade has turned
question1the driver of an 1800rm kg car travelling on a horizontal road at 114rm km rm h suddenly applies the brakes.
A 40kg child slides down a frictionless playground slide, starting from rest at a height of 2.2 m. He leaves the bottom of the slide moving horizontally at some velocity(v1). What is the distance the two roll to before stopping
A 10.0 kg object oscillates at the end of a vertical spring that has a spring constant of 1.90 104 N/m. Calculate the frequency of the dampened oscillation
A speaker generating a tone at 285 Hz is moving towards a stationary observer with a speed of 35 m/s
At what temperature is the diameter of the hole equal.
A block of mass m1 = 3.90 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, What is the magnitude of the tension in the cord
An incoming 0.14 kg baseball has a speed of 45 m/s. The batter hits the ball, giving it a speed of 60 m/s. If the contact time is 0.040 s, what is the average force of the bat on the ball?
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