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A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.889 A) sin [(430 Hz)t]. (a) What is the frequency of the alternating current? (b) Determine the resistance of the bulb's filament. (c) What is the average power delivered to the light bulb?
As observed from Earth, rocket Alpha moves with speed 0.802c and rocket Bravo travels with a speed of 0.692c. What is the speed of rocket Alpha as measured from rocket Bravo
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. how high is the hotel room from the ground
Doubling the total energy of a particle: (a) Does not affect its momentum (b) quadruples its momentum (c) more than doubles the momentum (d) doubles its momentum (e) less than doubles its momentum I know the answer is (c) but what equation is used to..
Two cars collide at an intersection. Car A, with a mass of 2000 kg , is going from west to east, while car B, of mass 1400 kg , is going from north to south at 17.0m/s. As a result of this collision, the two cars become enmeshed and move as one af..
Two tugs A and B pull a ship along a direction XO. Tug A exerts a force of 30kN at an angle of 15 degrees to XO, Find the angle X for the resultant force on the boat to be along XO
Two point charges 2.0cm apart have an electric potential energy -310uJ. The total charge is 15nC. What is the lesser charge
A tank contains 11.9 g of chlorine gas (Cl2) at a temperature of 81 °C and an absolute pressure of 5.50 105 Pa. The mass per mole of Cl2 is 70.9 g/mol. Determine the volume of the tank
A car starts from rest at a stop sign. It accelerates at 3.7 m/s^2 for 6.8s , coasts for 2.4s , How far apart are the stop signs
A wire of diameter 0.850 mm and length 50.0 m has a measured resistance of 2.80 ?. What is the resistivity of the wire
What is the magnitude of the force applied throughout this time? What is the direction of the force applied throughout this time?
A golfer imparts a speed of 28.7m/s to a ball, and it travels the maximum possible distance beforelanding on the green. How much time does the ball spend in the air
your physics teacher is holding a spinning wheel with angular momentum of 8 units upward while standing on a stationary
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