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A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 10.8 kg and 0.00432 m^3. The density of gold is 19 300 kg/m^3, and the density of quartz is 2660 kg/m^3. Find the mass of the gold in the rock.
You travel from "point" Columbia to St. Louis in a car moving at a constant speed of 60 km/h. What is your average speed for the entire trip
A uniform, solid metal disk of mass 6.10 and diameter 29.0 hangs in a horizontal plane, supported at its center by a vertical metal wire. What is the period of the torsional oscillations of the disk
An X-ray photon with a wavelength of 0.260nm scatters from a free electron at rest. Find the initial momentum of the photon
ltbrgt 1how does the quantum dot bind to the antibodies ie quantum dots and anti-her1 or anti-her2neu scfv antibodies
A double star is a system of two stars (say having massesm1 and m2) moving around the centre ofinertai of the system due to gravitation. Then find the ratio of sweeps of area of star of mass m1 to the star of massm2 ?
A bob of mass = 0.300 is suspended from a fixed point with a massless string of length = 25.0. What tangential speed must the bob have so that it moves in a horizontal circle with the string making an angle 21.0 with the vertical
A 2.00 kg mass is connected to a spring with a spring constant of 900 N/m. The displacement is given by the expression x(t) = 12.0 cm sin(? t). What is the frequency of the simple harmonic motion?
Follow these steps to solve this problem: Two identical loudspeakers, speaker 1 and speaker 2, are 2.0 m apart and are emitting 1700-Hz sound waves into a room where the speed of sound is 340 m/s. Compute the path-length difference r
A block of iron is suspended from one end of an equal-arm balance by a thin wire. To balance the scales, 6.15 kg are needed on the scale pan at the other end. What is the volume of the block (in m3)
A woman on a bridge 97.0 m highsees a raft floating at a constant speed on the river below. Shedrops a stone from rest in an attempt to hit the raft. Find the speed of the raft
Your task in physics lab is to make a microscope from two lenses.One lens has a focal length of 12 {\rm cm} ,the other a focal length of 2.5 {\rm cm} .You plan to use the more powerful lens as the objective, and youwant its image to be 16 {\rm cm}..
A beam of neutral hydrogen atoms with a speed of 104 m/s along the x-axis enters a 1 m long region, compute The acceleration of the atoms while in the magnetic field region
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