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The intensity (in W/m2) of one sound is 5.46 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level of the louder sound?
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. at what angle to the horizontal should he jump
Find out the angle of the thread. If the locomotive can exert a constant pull of 8.36E+5 N, how long does it take to increase the speed of the train from rest to 80.7km/hr.
The skis have a thrust of 220 N. Sam's speed at the bottom is 45.0 {rm m/s}. Illustrate what is the coefficient of kinetic friction of his skis on snow?
A typical coal-fired power plant has a generating capacity of about 1.3 X 10^9 W of electric power. What is the overall thermal efficiency of the plant
Now the gymnast (not holding any additional mass) walks directly above the right support. What is the force the left support exerts on the beam
A 200g mass on the end of a spring is pulled back 3 cm and released. There is a coefficient of friction between the table and mass of 0.7. The resonant frequency is 7.071 rad/sec.
A 4.95-kg ball, moving to the right at a velocity of +1.60 m/s on a frictionless table, Find the final velocities of the balls if the collision meet the following conditions
A man in search of his dog drives first 10mi northeast, then 54mi straight south, and finally 6mi in a direction 30° north of west. What are the magnitude and direction of his resultant displacement.
It requires 78.73 J of work to lift a rock to a height of 4.03 m. What is the mass of the rock
An ac generator has a frequency of 7.4 kHz and a voltage of 41 V. When an inductor is connected between the terminals of this generator, What is the inductance of the inductor
A piston cylinder contains ar at 375kPA and 20 degrees celicus. Determine the heat added and the work done, using both Air Tables and Constant specific heat
A model car is propelled by a cylinder of carbon dioxide gas. The cylinder emits gas at a speed of 4.5 g/s with an exit speed of 80.0 m/s. The car has a mass of 400 g, including the CO2 cylinder. Starting from rest, what is the car's initial accel..
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