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One end of a steel (young's modulus of 2.0x10^11 M/m^2) rod of radius R=9.5mm and length L=81cm is held in a vice. A force of magnitude F=62000 N is then applied perpendicularly to the end face (uniformly across the area) at the other end. What is the elongation of the rod?
Light of wavelength 470 nm in air enters a fishbowl filled with water, then exits by the crown-glass wall of the container. Find the wavelengths of the light (a) in the water and (b) in the glass.
A 73 kg window cleaner uses a 17 kg ladder that is 5.1 m long. He places one end on the ground 2.4 m from a wall, What is the angle of this force on the ladder
Beams of high-speed protons can be produced in "guns" usingelectric fields to accelerate theprotons. What acceleration would aproton experience if the gun's electric field were 2.23 x104 N/C?
In an integrated circuit, the current density in a 2.9 ??m?thick× 71 ??m?wide gold film is 7.7×105A/m2, How much charge flows through the film in 15 min
a coil of wire is connected to an ideal 6.0-v battery at t 0. at t 10.3 ms the current in the coil is 200 ma. one
The value of the magnetic field for a certain type of electromagnetic wave is 2.12 ?T. What is the value of the electric field for that wave
A 60.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.36 102 m/s from the top of a cliff 162 m above level ground, obtain the initial total mechanical energy of the projectile
Determine and sketch all the external forces acting on the chair. Because the chair can be represented as a point particle of mass , draw the forces with their tails centered on the black dot in the middle of the chair.
A harmonic on a string1.3 m long has a frequency of 15.6 Hz. The next higher frequency is 23.4 Hz. Both ends ofthe string are fixed. What is the fundamental frequency
An object is placed at a distance of 28 cm from a thin convex lens. The lens has a focal length of 9 cm. what are the values of the image distance and lateral magnification
If the accelerating plates are 1.00cm apart, and have a potential difference of 2.55×104V , what is the magnitude of the uniform electric field between them
At what minimum speed must a roller coaster be traveling when upside down at the top of a circle (Fig. 5-34) if the passengers are not to fall out? Assume a radius of curvature of 9.4 m.
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