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You have two 120V light bulbs, one 25W and one 100W, that are normally connected in parallel with 120V across each. Your friend had what seemed like a good idea which was to connect them in series across a 240V power line. However, one of them burned out immediately. Which one burned out and why? Explain in 100 words or less
Rank the voltage across each cylinder. A baseball is seen to pass upward by a window 15 m above the street with a vertical speed of 18 m/s. imagine the ball was thrown from the street. What was it's initial speed.
The light shining on a diffraction grating has a wavelength of 480 nm (in vacuum). The grating produces a second-order bright fringe whose position is defined by an angle of 9.38°. How many lines per centimeter does the grating have?
A mass-spring system oscillates with an amplitude of 5.60 cm. If the spring constant is 228 N/m and the mass is 454 g, Determine the mechanical energy of the system
A star's temperature is5161K. According to the Stefan-Boltzmann law, how much energy is radiated into space per second by each square meter of the star's surface
A dipole is formed by point charges +3.8 micro Coulomb and -3.8 micro Coulomb placed on the axis at (0.45 m, 0) and (-0.45m, 0), respectively. At what positions on the axis does the potential have the value 7.7×105 V?
An Earth satellite has a speed of 28100 km/hr when it is at its perigee, 281 km above Earth's surface. Find the apogee distance
A 0.410 kg pendulum bob passes through the lowest part of its path at a speed of 3.13 m/s. What is the tension in the pendulum cable at this point if the pendulum is 76.2 cm long.
a winch is used to drag a 295n crate up a ramp at a constant speed of 84.0 cms by means of a rope that pulls parallel
A 294 N force is pulling an 82.6-kg refrigerator across a horizontal surface. The force acts at an angle of 24.4 ° above the surface. calculate the work done by the kinetic frictional force
A vector has an x-component of ?21.0units and a y-component of 50.0 units. Find the magnitude and direction of the vector
A person whose eyes are 1.7 m above the floor stands in frontof a plane mirror. What is the height of the shortest mirror in which shecan see her entire image
A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.5. You grab one end of the board and lift it up, keeping the other end of the board on the ground.
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