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Two 75.0 W (120 V) lightbulbs are wired in series, then the combination is connected to a 230 V supply.
How much power is dissipated by each bulb? Answer in W.
A 144-g baseball moving 29m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. Determine the baseball's speed after the collision
A 11.0g bullet is fired horizontally into a 103g wooden block that is firstly at rest on a frictionless horizontal surface and connected to a spring of constant 154N/m. The bullet becomes embedded in block. If the bullet-block system compresses the s..
Light passes through a 200 line/mm diffraction grating and is observed on a 1.0 m-wide screen located 1.0 m behind the grating. What are the minimum and maximum possible values of wavelength
A 550 -cm flask contains 0.450grams of a gas at a pressure of 140kPa, What is the molecular mass of this gas
A copper kettle contains water at 22.8° C. When the water is heated to its boiling point, Determine the volume of the kettle at 22.8° C
Two atomic clocks are synchronized while on Earth before one is launched (within a GPS satellite) into a medium-altitude Earth orbit. estimate the time difference between the two atomic clocks
the horizontal and the chair slides along the floor. Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with shuttle.
Light enters the aperture of your AN/PVS-15 Night Vision Goggles at an incident angle of 32 degrees, What is the index of refraction of your objective lens
A car's starter draws 50A from the car's battery when starting up. If the start up time is 1.5s, how much electrons pass a location in the circuit during the time
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 12.0 m and, in starting, rotates according to ? = 0.31t2, what is the astronaut's radial acceleration
A thermos contains 125 cm3 of coffee at 85° C. To cool the coffee, you drop two 13-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of the coffee? Treat the coffee as if it were wa..
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