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The intensity (in W/m2) of one sound is 2.97 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level of the louder sound?
A 226 kg beam 2.0 m in length slides broadside down the ice with a speed of 30 m/s, How fast does the center of mass of the system move after the collision
When an ion accelerates through a potential difference of 2240V, What is the charge on the ion
a block of mass 2.5 kg is placed at a distance d=0.300 m from the spring. from this posistion the block is projected toward the spring with a speed v
How much work does Bob do on the rock and How much force, assumed to be constant, does Bob apply to the rock
Assume you are 65.00 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.0 mm.
An 82 g arrow is fired from a bow whose string exerts an average force of 95N on the arrow over a distance of 77.00 cm. What is the speed of the arrow as it leaves bow.
A baseball outfielder throws a 0.150 kg baseball at a speed of 45.0 m/s and an initial angle of 28.0°. Illustrate what is the kinetic energy of the baseball at the highest point of its trajectory?
A 20 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0°C is 331 m/s. What is the wavelength of the fundamental frequency
A rail car that weighs 40 N is accelerated at 6.9 m/s/s for 4.9 seconds. How much work is done on the rail car
A 25 g of copper pellets are removed from a 300 C oven and immediately dropped into 120 mL of water at 18 C in an insulated cup. What will the new water temperature be.
A wooden raft has a mass of 85 kg. while empty it floats in water (density 1000 kg/m3) with 61 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
A 9.4-kg watermelon (30 degrees)and a 7.8-kg pumpkin (53 degrees) attached to each other via a cord that wraps over a pulley, Find the accelerations of the pumpkin and the watermelon
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