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As you sing in the shower, you notice that certain frequencies reverberate with setting up standing waves. If the shower is 5.8 feet long and the speed of sound is 1000 ft/sec, what are the two lowest frequencies that reverberate so?
A bullet of mass m is fired into a hanging wood block of mass M and pendulum length L. The block, with the bullet embedded, swings up to the point the angle with the vertical ?. Calculate the speed with which the bullet made contact with the block,
a bullet is fired from a gun whose barrel is 0.600 m long. the bullets mass is 5.00 g and its velocity is 300ms when
A box is placed on a conveyor belt that moves with a constant speed of 1.05. The coefficient of kinetic friction between box and belt is 0.80. How much time does it take for the box to stop sliding relative to belt.
0.14 kg of water at 88.0 deg C is poured into an insulated cup containing 0.234 kg of ice initally at 0 deg. Calculate the mass of liquid
Charge B exerts a repulsive force (directly away from B) on charge A of 4.5N. Find the magnitude of the net force on charge A
From what height will you have to drop the rock on Earth so that the fall-time on both planets is the same.
Find the distance from the origin on the x-axis between the charges where the electric potential due to the two point charges vanishes
A loudspeaker is placed between two observers who are 120 m apart, along line connecting them. If one observer records a sound level of 52.8 dB and the other records a sound level of 83.5 dB, how far is the speaker from each observer? Enter the longe..
A metal ball with a mass of 2 g, a charge of 1 uC, and a speed of 42 m/s enters a magnetic field of 16 T. What is the maximum acceleration of the ball
An aluminum rod is 16.0 cm longat 20°C and has a mass of 350 g. If 13000 J of energy is added to the rod by heat, what is the change in length of the rod
A 0.70 kg iron horseshoe is taken from a forge at 900°C and dropped into 3.00 kg of water at 13.0°C. find the total entropy change of the horseshoe-plus-water system
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.46 km. What is the magnitude of the couple's displacement
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