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The density of a certain metal solid is 7.2 x 10 ^ 3 kg/m^3, and its Young's modulus is 10 x 10^10 N/m^2. What is the speed of sound in this metal?
The second harmonic sinusoidal standing wave in a pipe with both ends open has a wavelength of 2m. The sound speed is 340 m/s. What is the frequency of the second harmonic
An object is in front of a converging lens with a focal length of 11.0 cm. The lens produces a real image located 25.0 cm from the lens. what is the image distance of the new lens
A hard steel ball is dropped from rest at postion y = 2h and bounces from a hard surface tilted at an angle phi from horizontal. On impact, Find the horizontal displacment of the ball
A 1.6 kg object oscillates with simple harmonic motion on a spring of force constant 400.0 N/m. What is the total energy of the object and the spring
A woman can read the large print in a newspaper only when it is at a distance of 65 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
A 143 O lamp, a 29 O electric heater, and a O 53 fan are connected in parallel across a 135 V line. What power is expended in the heater
A 1200-turn coil of wire that is 2.1 cm in diameter is in a magnetic field that drops from 0.14 T to 0 T in 12 ms. What is the emf of the coil
You are traveling on an airplane, The velocity of the plane with respect to the air is 190 m/s due east, What is the speed of the plane with respect to the ground
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneous breaks into two alpha particles, what is the force between the two alpha particles when they are 7.00 x 10^-15 m apart
Blocks with masses of 2 , 4 , and 6 are lined up in a row on the frictionless table. All three are pushed forward by a 56 force applied to the 2 block. How much force does the 4 block exert on the 6 block.
Suppose 199 W of heat flows by conduction from the blood capillaries beneath the skin to the body's surface area of 1.37 m2. estimate the average distance of capillaries below the skin surface
The image behind a convex mirror (radius of curvature = 92 cm) is located 8 cm behind the mirror. Where is the object located
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