Estimate how much power light bulb will consume
You buy a 60w light bulb in europe where the electricity is 240 v. if you use the light bulb at home in the united states how bright will it be relative to the 60w 120v lightbulbs? estimate how much power it will consume.
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An object weighing 338 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 302 N. Immersed in oil, the object weighs 313 N. Calculate the density of the object.
In a series RLC AC circuit, the resistance is , the inductance is mH, and the capacitance is μF. The maximum potential is V, and the angular frequency is rad/s. Calculate the maximum current in the circuit.
If Wayne Gretzky shoots the puck at a speed of 90 km/h from the top of the offensive face-off circle 15.0m from the net, how long will it take to reach the net?
What is (a) the width and (b) the height of the central bright maximum of the diffraction pattern, measured between the two dark fringes on either side?
If the coefficient of kinetic friction between the snow and skis is 0.11. what horsepower engine is required if 30 such skiers are on the rope at one time?
Suppose that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 78.5 lb/in2 and the area of contact between each tire and the road is 7.13 cm2, what is you
A banked circular highway curve is designed for traffic moving at 67 km/h. The radius of the curve is 209 m. Traffic is moving along the highway at 48 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that wil
A projectile is fired at an upward angle of 45 from the top of a 227 m cliff with a speed of 160 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
A boy drags a wooden crate with a mass of 20 kg, a distance of 12 m, across a rough level floor at a constant speed of 1.5 m/s. What is the total amount of work done on the object?
Where t is in seconds. What is the first time after t=0.00 s at which the velocity is -0.150 m/s? What is the object's position at that time?
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