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Two wires A and B are of equal length. Each is attached at one end to the ceiling and to a weight at the other end. The cross-sectional area of A is 2.00 mm2 and that of B is 4.00 mm2. The Young's modulus for wire A is 1.80 x 1011 Pa and for B is 1.20 x 1011 Pa. If the weight suspended from wire A is 2.00 kg, what would the weight attached to wire B need to be to produce a) equal stresses in A and B and b) equal strains in A and B?
When specially prepared Hydrogen atoms with their electrons in the 6f state are placed into a strong uniform magnetic field, If we don't neglect the intrinsic spin of the electrons, then how many energy levels can we observe in the ground state
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
In a student experiment, a constant-volume gas thermometer is calibrated in dry ice (?78.5°C) and in boiling allyl alcohol (97°C). What pressure would be found at the freezing point of water
A mass vibrates at the end of a spring with simple harmonic motion. The spring constant is 30 N/m. What is the kinetic energy of the mass when it is at half its amplitude
What is magnitude of the greatest force
Heart Pump Rate When at rest, your heart pumps blood at the rate of 5.00 liters per minute (L/min). find the volume of blood pumped by your heart in one day
Suppose a 63.00 kg boy and a 50.00 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward girl.
After flying for 15 min in a wind blowing 42 km/h at an angle of 28° south of east, What is the speed of the airplane relative to the air
Some athletes can put out as much as 800 watts in short bursts. If you could sustain such energy output long enough to reach the top of a mountain, how much time would it take you to get there from the valley, 3000 meters below the peak? So how does ..
A series RLC circuit consists of a 96.0 ? resistor, a 0.200Hinductor, and a 43.0 ?F capacitor. It is attached to a120 V/60 Hz power line. What is the average power loss
A tungsten target is struck by electrons that have been accelerated from rest through a 76.1-kV potential difference. Find the shortest wavelength of the radiation emitted
A compound microscope uses a 73.0mm lens as the objective and a 2.1cm lens as the eyepiece. find the total magnification produced by the microscope
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