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Q. A string of 22 identical Christmas tree lights are connected in series to a 120 V source. The string dissipates 76 W. What is the equivalent resistance of the light string?
Q. if a 2.5 kg ball puts 118 joules of energy in a spring with a 614 n/m constant, how far is the spring compressed?
What is closing equilibrium temperature of the tin-water
A worker drops a wrench from the top of a tower 88.00 m tall. With what velocity does the wrench strike the ground? (Suppose the positive direction is upward.)
Object 1 has a mass m1 and a velocity 1 = (2.87 m/s). Object 2 has a mass m2 and a velocity 2 = (3.01 m/s). The total momentum of these two objects has a magnitude of 18.0 kg • m/s and points in a direction 66.5° above the positive x-axis. Find out m..
A model rocket is launched straight upward. Its altitude y as a function of time is given by y = bt -ct2, where b = 82 m/s, c = 4.9 m/s2, t is the time in seconds, and y is in meters, (a) make use of differentiation to find out a general expressio..
What force does a 55 kg passenger exert on the seat when she is at the top of the Ferris wheel.
NASA sends a satellite to another planet by placing the satellite in a Keplerian orbit (around the sun) such that the perihelion is at the radius of the Earth's orbit (1 AU) and the aphelion is at the radius of the planet's orbit. Most of the trip is..
A block has an initial speed V(o) > 0 on a linear trajectory on the surface with friction coefficient u and air resistance (F = cv^2). Derive an equation that will represent the velocity (V) as a function of the position of the block (x). So V(x).
A screen is placed 51.0 cm from a single slit that is illuminated with light of wavelength 677 nm. If the distance between the first and third minima in the diffraction pattern is 2.80 mm, what is the width of slit.
Suppose one gallon of gasoline produces 1.1 x10^8 J of energy, and this energy is enough to operate a car for 18 miles. An aspirin tablet has a mass of 275 mg. If the aspirin could be converted completely into thermal energy, how many miles would ..
Calculating plants maximum possible thermal and actual efficiency.
If air drag is negligibly small, how fast is sequoia cone moving while it reaches the ground if it dropped from the top of a 114 tree.
Establish the wave functions and the general expression
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