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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?
What is the attractive force between the protons. A rocket rises vertically, from rest, with the acceleration of 3.0 m/s2 until it runs out of fuel at an altitude of 1100 m. After this point, its acceleration is that of gravity, downward.
In the annual battle of the dorms, students gather on the roofs of Jackson and Walton dorms to launch water balloons at each other with slingshots, Find the direction of the balloon's inital velocity
A ring of wire is dipped into a soap solution and it is held so that the soap film on the ring is vertical. compute the thickness of the film
A car starts from rest and accelerates at a constant rate of 3.00 m/s^2 until it is moving at 18.0 m/s. The car then decreases its acceleration to 0.500 m/s^2 and continues moving for an additional 250 m. Find the total time taken.
A 80 kg person sits on a 4 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure in pascals exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
A snowmobile climbs a hill at velocity v-up. The slope of the hill is a 2 ft rise for every 70 ft of distance. The resistive force of the snow is equal to 4.12 percent of the weight of the snowmobile. How fast will the snowmobile move downhill, assum..
Agree on the mass of the earth knowing that the mean radius of the moon's orbit about the earth is 248,910 mi and that the moon requires 28.32 days to complete one full revolution about earth.
What is the angle of total internal reflection (critical angle) for a glass-to-water interface
Two crates, of mass 75.0 kg and 109 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.0 kg crate. What is the force the each crate exerts on the other.
A meterstick is at rest in an inertial frame S2. If S2 moves with a speed of 0.7c with respect to a rest frame S1, find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
A parallel-plate capacitor has square plates of edge length 2.4 cm and a plate spacing of 0.017 mm. If the gap between the plates is a vacuum
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