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What are the units of specific gravity? Assuming that the density of water is 0.997 g.mL^-1 and the specific gravity of gold is 19.28 what is the density of gold in g.mL^-1? In pounds per cubic foot?
my attempt: no units for specific gravity. density of gold in g.ml^-1 = 19.2 g/mL^-1 i have no idea how to convert to pounds per cubic foot?
4. The mass of the earth is 6.1 x 10^27 g and the radius is 6.4 x 10^6 m. What is the average density of the earth in g.mL^-1? Hint the volume of a sphere is 4/3 pie r^3 where r is the radius of the sphere.
my attempt:2.6 x 10^19 g/ml^-1
5 the mass of a neutron is 1.675 X 10^-24 g. The radius is about 10^-15 m. What is the density of a neutron in g.mL-1? What assumption is being made about the structure of the neutron in this calculation?
my attempt: 4.2 x 10^ -45assume the structure is a sphere?
suppose you have a metal with a small volume (0.5mL) and a metal with a large volume (5.0mL). Which should give a higher percentage error if we use the water immersion method? explain.
my attempt: i would think less water would give a higher percentage error but not sure of the reasoning my guess the water not covering the metal throwing off the accuracy?
what will be the frequency of vibrations. At one instant a bicyclist is 70m due east of a park's flagpole, going due south with a speed of 15m/s. Then, 19s later, the cyclist is 65m due north of the flagpole, going due east with a speed of 14 m/s.
Calculate the speed of a satellite in an orbit 950 km above the earth's surface
Two conductors having net charges of +14.0 µC and -14.0 µC have a potential difference of 14.0 V between them. Determine the capacitance of the system
A crate whose mass is 360kg rests on the bed of a truck that is moving at a speed of v0 of 105 km/h. The driver applies the brakes and slows down to a speed v of 62 km/h in 17 s. What force (assumed constant) acts on the crate during this time?
A sinusoidal wave is traveling along a rope. The oscillator that generates the wave completes 38.0 vibrations in 26.0 s, What is the wavelength of the wave
two substances a and b have identical enthalpies of vaporization. they boil at 164 degree celsius and 236 degree
What was the most interesting part of your visit and is there anything about what you observed that would cause you to want to settle a case or to pursue it fully to trial? What and why?
A person walks 25.0 north of east for 3.10 km. explain how far would another person walk due north and due east to arrive at the same location?
A certain centrifuge produces a centripetal acceleration of magnitude exactly 1230g at a point 11.9 cm from the axis of rotation. Find the number of revolutions per second
In lab tests on a 9.25cm cube of a certain material, a force of 1375N directed at 8.50degree to the cube, as shown in the figure, causes the cube to deform through an angle of 1.24 degree. What is the shear modulus of the material?
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
A car drives 5.0 km north, then 7.3 km east, then 6.7 km northeast, all at a constant velocity. If the car had to perform 2.6 × 106 J of work during this trip, what was the magnitude of the average frictional force on the car
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