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The β- particles emitted in the decay of 3 H (tritium) interact with matter to create light in a glow-in-the-dark exit sign. At the time of manufacture, such a sign contains 15.0 Ci of 3 H.
(a) What is the mass of the tritium?
(b) What is its activity 5.00 y after manufacture?
a bullet weighing 50 grams and traveling at 200 ms is shot into a stationary block of wood weighing 4 kg where it
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a horizontal 30-cm-long conducting rod is rolling along two conducting rails that are parallel to the x-axis. the rod
Blocks with masses of 3.0 kg, 4.0 kg, and 5.0 kg are lined up in a row on a frictionless table. How much force does the 4.0 kg block exert on the 5.0 kg block
A +5.0 -mu C charge experiences a 0.52-N force in the positive y direction. If this charge is replaced with a -2.7-\mu C charge, Find the direction of the force in this case
A balloon is filled with 4.65 liters of helium at a pressure of 1.10 atm and a temperature of 26.5° C. Discover the mass of the helium. Discover the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temp..
What is the magnitude of the net torque exerted on the branch by the children? Suppose that the axis is located where the branch joins the tree trunk and is perpendicular to the plane formed by the branch and the trunk.
A CD originally at rest reaches an angular speed of 40rad/s in 5.0s. What is the magnitude of its angular acceleration
A hockey puck slides off the edge of a table at point A with an initial velocity of 20.0 m/s, What is the speed (not the velocity) of the puck just before it touches the ground
A monochromatic light is incident on a Young's double slit setup that has a slit separation of 30.0 µm. Find the separation between the third-order bright fringe and the zero-order bright fringe
q1. determine the work done by 9.00 of water when it is all boiled to steam at 100. suppose a constant pressure of
A resistance R and a 3.4-H inductance are in series across a 60-Hz ac voltage. The voltage across the resistor is 34 V and the voltage across the inductor is 39 V. Assume that all voltages in this problem are rms voltages. (a) What is the resistance ..
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