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If we start with 5 mg 210-Pb, what would be the amount of 210Pb in mg left 10 years later? Using the known activity of 226-Ra, calculate the activity of the this sample after 10 years.
An infant's pulse rate is measured to be 154 ± 4 beats per minute. What is the percent uncertainty in this measurement? (Note that percent uncertainties should be reported to two significant figures.)
Find the image location by drawing a ray tracing diagram to scale. Verify your answer using the lens equation.
Explain why centripetal acceleration changes the direction of velocity in circular motion but not its magnitude?
A generator connected to an RLC circuit has an rms voltage of 140 volts and an rms current of 33 mega-amps. what is the inductive reactance of the circuit
neptune is approximately a sphere of radius 2.21 x 107 m.a what is its circumference in kilometers?b what is its
Find the work done by 2.96 moles of an ideal gas if its volume doubles at a constant temperature of 23.2°C
A fifteen-watt heater is used to heat a monatomic ideal gas at a constant pressure of 6.61 x 105 Pa. How long was the heater on
A student sits on a rotating stool holding two 4 kg objects. When his arms are extended horizontally, the objects are 0.8 m from the axis of rotation, and he rotates with angular speed of 0.74 rad/sec. Calculate the final angular speed of the stude..
Please help me solve this 1 Dimensional kinematics equation: A biker first accelerates from 0.0ms to 6.0ms in 4.5s, then continues
q1. a proton moves perpendicular to a uniform magnetic field b at 1.6 multiplied by 107 ms and experiences an
If the bullet buries itself in the block, find out how far along the ground that the block lands from the base of the table.
two stretched strings are placed next to one another one with a length of 70.0 cm and the other with a length of 84.0
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