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To weigh a fish, a person hangs a tackle box of mass 3.5 kilogramsand a cooler of mass 5 kilograms from the ends of a uniform rigidpole that is suspended by a rope attached to its center. The systembalances when the fish hangs at a point 1/4 of the rod's lengthfrom the tackle box. What is the mass of the fish?
A rifle of 8lb fires a bullet weighing 0.8oz which leaves the rifle with a muzzle velocity of 2000 ft/s. What is the recoil velocity of the rifle?
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. How much farther would it have traveled on the moon than on earth
a spring with a force constant of 52 n m has a relaxed length of 2.45 m. when a mass is attached to the end of the
A 40 ohm resistor and a 60 ohm resistor are connected in series to a 12 volt battery. What is the voltage difference across each resistor
Light of wavelength 5.10 multiply.gif 102 nm passes through a slit of width 0.210 mm. Determine the width of the first-order bright fringe
a steel piano string is 49.6 inches long. the diameter of the string 0.0421 inches. when struck this string produces
A heat engine with an efficiency of 20.0% performs 2500 J of work. How much heat is discharged to the lower temperature reservoir
An object with a charge of -2.6 \mu C and a mass of1.7×10−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to itsweight.
A man throws a baseball straight up in the air at 19.6 m/s. How many seconds does it take to reach the top
you drive on interstate 10 from san antonio to houston half the time at 58 kmh and the other half at 99 kmh. on the way
A Styrofoam box has a surface area of 0.74 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 27°C. If it takes 8.5 h for 5.0 kg of ice to melt in the container, determine the thermal cond..
If n=10, what is the largest value of the angular momentum l in this shell, How many electrons can be placed in this shell
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