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A piece of radium has an activity of 18 mCi.
(a) What is the mass of the radium?
(b) What is its activity in Bq?
Light consisting of two wavelengths 500 and 520nm, is incident normally on a plane diffraction grating with d=1?. Find the linear separation of the two first-order principal maxima
A 250 kg weather rocket is loaded with 100kg of fuel and fired straight up. It accelerates upward at 32m/s2 for 34 s, then runs out of fuel. overlook any air resistance effects.
The air inside a bicycle tire pump has 153 joules of work done on it as 89.9 joules of heat is conducted away from it
a car of 1200 kg travels east (call it +x) at 24 m/s while a truck of 2200kg travels north (call it +y) at 19 m/s . they collide and stick together. What is the momentum in the sysem
Compiute the average power output in horsepower. Calculate assuming the body is 14% efficient, what rate of energy input was required.
A skater of mass 73.0 kg initially moves in a straight line at a speed of 4.90 m/s. what is the skater's final velocity
A person of mass 50 kg rides a loop the loop (vertical circular track) at an amusement park. find the normal force exerted at the bottom of the loop
A turntable is a uniform disc of mass 1.2 kg and radius1.3 *10^-1 m . The turntable is spinning at a constant rate of f0 = 0.5 Hz. What is the magnitude of the frictional torque
With what minimum speed must you toss a 160 g ball straight up to hit the 10 m high roof of the gymnasium if you release the ball 1.60m above the ground? Solve this problem using energy.
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = 38.8 cm. Precisely 35.7 cm behind this lens is a concave lens with the focal length f2 = -10.3 cm. The object to be photographed is 3.97 m in front o..
What the max speed of the oscillator?
A 32.2 uF capacitor is connected to a 50.2 ohm resistor and a generator whose rms output is 37.2 V at 50.0 Hz. Calculate the rms current in the circuit. Calculate the phase angle for the circuit
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