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Using sophisticated analysis tools, you detemined that the rock that fell on the roof of your car gave an age of 16 billion years. You double checked your age numbers in the lab and got the same age again! Assuming you are using Potassium / Argon ratios to determine the age (half life is approx 1 billion years), answer the following: (a) How many half life's of Potasium radioactive decay are needed to give this 15 billion year age? (b) Knowing from other reliable techniques, you find out that the rock is only 1 billion years old, give an explanation for thsi 16 billion year age?
Cyclotron's accelerate particles around a circular track during the use of electric and magnetic fields. The TRIUMF is one such cyclotron and is able to accelerate particles to a few percent the speed of light (We'll say 3%).
The pressure at the bottom of a tube is 1500 Pa. Petroleum (d=800 kg/m cubic) floats on 10 cm of water (d=1000 kg/m cubic). What is the depth of the layer of petroleum
A 50Ω resistor is placed in series with a 40mH inductor. At what frequency will the current in such a circuit lag the applied voltage by exactly 45 deg.?
A uniform spherical shell of mass 8.90 {\rm kg} with diameter46.0 {\rm cm} has four small masses of 0mass 2.40 {\rm kg} attached to its outer surface and equally spaced around it. This combination is spinning regarding an axis running during the cent..
a calculate the acceleration due to gravity your weight and your escape velocity for each planet in the solar system
q.1 three point charges two positive and one negative each having a magnitude of 20 uc are placed at the vertices of an
A frictionless pulley has the shape of a uniform solid disk of mass 4.00 kg and radius 28.0cm. A 3.60 kg stone is attached to a very light wire that is wrapped around the rim of the pulley, and the stone is released from rest. As it falls down, the w..
Start from the expression of the electric filed outside an infinite sheet of uniform surface charge density, E=sigma/2epsilon, derive the electric field
A coil has a DC resistance of 100 Ω and an impedance of 180 Ω at a frequency of 2 kHz. Neglect the wiring capacitance of the coil at this frequency. What is the inductance of the coil? Answer in units of mH.
Assume the wheel has a constant negative angular acceleration of magnitude 2.50 rad/s2. Explain through how many radians has the wheel turned during the interval found in (a) which is 4.98?
One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of cross-sectional area 1.20 × 10?3 m2. how much charge flows through a point in the circuit during the change
Keilah, in reference frame S, measures two events to be simultaneous. Event A occurs at the point (37.0 m, 0, 0) at the instant 9:00:00 Universal time on January 15, 2010. What time interval elapsed between the events
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