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A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 4.16 x 10-6 W/m2 at a distance of 130 m from the explosion. Find the distance (in m) from the source at which the intensity is 1.84 x 10-6 W/m2.
During a walk on the Moon, an astronaunt accidentally drops his camara over a 20.0m cliff. It leaves his hands with zero speed, and after 2.0s it has attained a velocity of 3.3 m/s downward. How far has the camera fallen after 4.0 s?
The angular velocity of a disc is given by: ? = 24t - 6t^2. At what time is the torque acting on the disc zero
One mole of an ideal diatomic gas is heated from a temperature of 19 degrees C to a temperature of 149 degrees C. How much heat in joules must be supplied if the volume is kept constant during heating?
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.10 m/s at an angle of 17.0° below the horizontal. How far horizontally from the base of the building does the ball strike the ground
A 10.0 kg block of metal is suspended froma scale and immersed in water. The dimensions of the blockare 12.0cm x 10.0cm x 10.0cm. What is the reading of the spring scale
A .5Kg solid mass is totally submerged in water while suspended from a spring balance. Calculate the reading on the spring balance
A rod is initially at a uniform temperature of 0 o C throughout. One end is kept at 0oC , and the other is brought into contact with a steam bath at 100 o C.
q1. the driver of a 1700 car travelling on a horizontal road at 140 suddenly applies brakes. due to the slippery
If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window (radius = 0.10 m)? For comparison, determine the weight of a jetliner whose mass is 1.20 105 kg
A clock has a second hand whose tip rubs against the inside of the glass cover. what is the minimum torque that must be applied to the second hand
For the motion from the initial free until the piece of wood comes to rest, what is the total amount of work completed by friction.
Soft drinks are commonly sold in aluminum containers. How many tons of aluminum does this represent
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