Density = Mass/Volume = 0.622... grams per ml
density has to be in units of mass/volume, or grams/ml in your case. If density is 0.75 g/ml, then mass = .75 x 120 = 90 grams. Check the question again to be sure
You weigh it, failing that ability you need to know the composition, density and dimensions.
A quarter turn is 90 degrees. This is based on a full circle of 360 degrees.
A mass of 90 kg weighs 882 newtons (198.4 pounds) on the earth. (rounded)
A student with a mass of 90 kg on the earth (gravity =9.8m/s/s) will have a weight of 882 Newtons. Weight = Mass * Gravity
Let's say the object has mass M and volume V. An object floats by displacing an amount of water equal to the object's mass. So water equal to 90% of the volume of the object has mass equal to the whole object, or M = 0.9V * 1g/ml or M = 0.9V Since density is mass divided by volume, or d = M/V, density of object = M/V = 0.9 g/ml.
Density= Mass (in grams)/ Volume (in milliliters) So convert to the correct units.. 1 cc= 1 mL, so 90 cc= 90 mL Density= 360 g/ 90 mL = 4 g/mL
The density of the substance is calculated by dividing its mass by its volume. In this case, the density would be 90 g / 15 ml = 6 g/ml.
Volume cannot be measured in cm since that is a unit for measuring length.
It depends on the density of the object
The mass can be calculated by multiplying the volume by the density. Mass = volume x density, so in this case, mass = 120 mL x 0.75 g/mL = 90 grams.
The density of the mass is calculated by dividing the mass by the volume. In this case, the density would be 810 kg / 9 ml = 90 kg/ml.
density has to be in units of mass/volume, or grams/ml in your case. If density is 0.75 g/ml, then mass = .75 x 120 = 90 grams. Check the question again to be sure
The mass, in this case, is the product of the volume and the density. Please note that "0.75ml" is not a density. Density must be expressed as mass/volume, for example, grams/ml, kilograms/liter, etc. For example, if your density is 0.75 g/ml (usual unit), the answer is 90g
Volume cannot be measured in centimetres. Without the volume in appropriate units, the question makes no sense and so cannot be answered.
Iorn
The mass of an object traveling at 90% the speed of light can be calculated using relativistic mass formula. The relativistic mass increases as the speed of the object approaches the speed of light. Given a rest mass of 100 kg, at 90% the speed of light, the mass would be significantly higher, but specifics would depend on the exact calculation.