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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?
An electron is traveling through a uniform electric field. The field is constant and given by E=(2.00 x 10^-11 N/C)i - (1.2 x 10^-11 N/C)j. At t=0 s the electron is at the orgin and traveling in the x direction at a speed of 1.90 m/s. What is its pos..
when the magnetic flux through a single loop of wire increases by 30 tm2 an average current of 40a is induced in the
A 40 g marble moving at 2.0 m/s strikes a 22 g marble at rest. What is the speed of each marble immediately after the collision
An 9.00 {rm kg} point mass and a 15{rm kg} point mass are held in place 50{rm cm} apart. A particle of mass m is released from a point between the two masses 19{rm cm} from the 9{rm kg} mass along line connecting the two fixed masses.
Two masses are placed on the x axis. The first mass 320kg is located at x = 310cm , the second mass 660kg is at the origin
What is the maximum load that could be suspended from a copper wire of length 1.0 m and radius 1.0 mm without breaking the wire? Copperhas an elastic limit of 2.0 x 10^8 Pa and a tensile strength of 4.0 x 10^8 Pa.
An 8.0 kg block is released from rest, v1 = 0 m/s, on a rough incline, which has an angle of 40 from the horizontal. How much work gravity do on the block during this process
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the gravitational force of attraction between two students sitting at their desks in physics class is 3.02 multiplied
Two 1.60 cm-diameter disks spaced 1.60 mm apart form a parallel-plate capacitor. The electric field between the disks is 5.00×10^5 V/m. How much charge is on each disk
A merry-go-round starts from rest and reaches the angular speed of 4 rpm in the first two minutes. What would be the angular acceleration of the merry-go-round
A diver springs upward from a three-meter board. At the instant shecontacts the water her speed is 8.90m/s and her body makes an angleof 75.0o with respect to the surface of the water. How much time does she spend in the air
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