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Three resistors, 29, 47, and 77 ?, are connected in series, and a 0.49-A current passes through them.
(a) What is the equivalent resistance?
(b) What is the potential difference across the three resistors?
An 85 kg spacewalking astronaut pushes off a 655 kg satellite, exerting a 115N force for the 0.600 s it takes him to straighten his arms.
When lifting an object using the biceps muscle, the forearm acts as a lever with the fulcrum at the elbow. The input work is provided by the biceps muscle pulling up on the bone. How much force should the biceps exert to lift an object weighing 12..
The convex lens of a copy machine has a focal length of 25 cm. A letter to be copied is placed 40.0 cm from the lens.
Consider a Universe where matter density is 0, and it has a significant cosmological constant. How old is the Universe in this case
a balloon contains 4.20 moles of a monatomic ideal gas. As energy is added to the system by heat, find work Wenv done by the gas in expanding the balloon
Two earthquake waves of the same frequency travel through the same portion of the Earth, What is the ratio of the amplitudes of the two waves
What current is in the primary circuit. A proton moves at a speed of 8.0 103 m/s as it passes through a magnetic field of 0.55 T. Find the radius of the circular path. Note down that the charge carried by the proton is equal to that of the electron..
A gry is an old English measure for length, defined as 1/10 of a line, where line is another old English measure for length, defined as 1/12 inch. A common measure for length in publishing business is a point, defined as 1/72 inch. What is an area..
A beam of unpolarized light in air strikes a flat piece of glass at an angle of incidence 54.2 degrees. what is the index reflection of the glass
What is the magnitude of the normal force. What is the total translational kinetic energy of gas molecules.
A flask contains helium gas at 11K. The Flask is thermally isolated and the gas is allowed to escape slowly through a narrow tube until the pressure within the flask is 0,98 atm
Compute the numerical value for acceleration
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