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An object floats on water with 84% of its volume below the surface. The same object when placed in another liquid floats on that liquid with 70% of its volume below the surface. Determine the density of the unknown fluid.
A 5g lead bullet travelling with v=1200m/s embeds in the 1kg block of ice at (-1°C). How much water was produced during the melting
each second 5e23 nitrogen molecules (m=4.65e23 g) collide with a 10cm2 wall assume that the molecules all travel with a common speed of 290m/s, What is the pressure on the wall
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.74 from the grating. What is the difference between these wavelengths
A 0.42-kg particle has a speed of 8.0 m/s at point A and kinetic energy of 7.5 J at point B. What is the total work done on the particle as it moves from A to B
Two tiny spheres of mass 6.80 mg carry charges of equal magnitude, 72.0 nC, but opposite sign. Which ball (the one on the right or the one on the left ) has positive charge ? What is the magnitude E of the field
What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire
the resistivity of a semi conductor can be modified by adding different amounts of impurities. a rod of semi conducting
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70 F, r = 0.75), and will subside on the e..
a particle is moving along a straight line with the acceleration a 12t-3t12fts2 where t is in seconds.determine the
After collision, the component of the total momentum parallel to the floor must remain zero, since the net external force acting on the plate has no component parallel to floor.find out the masses of pieces 1 and 2.
Light of wavelength 670nm falls on two slits and produces an interference pattern in which the third-order bright red fringe is 49mm, What is the separation of the two slits
q1. using the equation fm v2r for a force an object in circular motion. find the radius r of motion of a m1.6 kg ball
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