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intensity level at a point is 100 db . how much is the actual intensity of sound falling that point ? given threshold intensity of sound 10^-12w/m2
A 60g ball of clay is thrown horizontally at 10m/s toward a 1.8kg block sitting at rest on a frictionless hi surface. The clay hits and sticks to the block. What impulse does the block exert on the clay
Despite what you see in science fiction movies, we don't know howto make artificial gravity. However, we can make something thatseems like gravity if we work in a rotating reference frame.
A soccer ball with mass .42 kg is initially moving with speed 2.00 m/s. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.00 m/s
A Carnot engine operates between 230 °C and 120 °C, absorbing 6.30 multiplied by 104 J per cycle at the higher temperature. How much work per cycle is this engine capable of performing
A 1320-kilogram car, moving with a speed of 15.0 m/s, is on a flat, circular curve having a radius of 57.0 meters. How much friction is required to keep the car on the road? What is the coefficient of friction between the road and the tires?
global positioning system gps satellites area at altitudes of 20000 km as measured from the center of the earth. at
Integrated circuits are manufactured in vacuum chambers in which the air pressure is 9.00×1011 mm of Hg. What is the number density
Raindrops fall 1000 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground
A linearly polarized electromagnetic wave is sent through two sheets of polarizing material. What is the average intensity of the wave after it passes through A
A cardiac defibrillator requires 302 J of energy to restore normal heartbeat on a patient with a cardiac arrest. Its capacitance is 0.17. What is the charge on the plates that will be discharged through a patient's chest
The current flowing through a 333 mH inductor is a sinusoidal function of time, I = 0.250 sin (375t), What is the smallest positive value of time t when the magnetic potential energy stored in the inductor is at a maximum
The diameters of the main rotor and tail rotor of a single-engine helicopter are 14.4 m and 2.14 m, respectively. What is the speed of the tip of the large rotor
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