To calculate the density of the object, you need to divide the mass of the object by the volume of water it displaces. Since water has a density of 1 g/mL, 4 millimeters of water is equal to 4 grams per square centimeter. Therefore, the density of the object would be 20 g / 4 cm^3 = 5 g/cm^3.
Density = (mass) / (volume) = 27/10 = 2.7 gm/cm3 .
What is the density of water at 37 degrees Celsius?
The law of universal gravitation states that F = G(M1M2)/(r squared). Assuming that the mass of the Earth did not also increase proportionally, then the force of gravity would be 1/25th as much.
Maybe use the same principal as a submarine. Two water tanks begin to fill themselves with water, and therefore the craft sinks. Then, after your twenty seconds, a pump should begin to remove the water from the water tanks, causing the craft to float back to the surface. If the army have faith in this simple physics then I'm sure we can...
The same force could not be applied to travel the same distance if there is a larger mass in one instance. Applied force will accelerate a given mass twice as much as a mass half as large. If both are moving the same distance, the 20-brick cart had more kinetic energy when in motion.
The object with the greatest density is the 20 kilograms of cement, as cement is a dense material compared to feathers, paper clips, and plastic bottles. Density is a measure of how much mass is in a given volume, so the denser the material, the greater the density.
20 millimeters = 20,000 micrometers 20 micrometers = 0.02 millimeters
25 millimeters are 2.5 centimeters.
25 millimeters=2.5 centimeters
200
The answer is 210 millimeters
158/20 g/ml = 7.9 g/ml
280 mm
28,000 mm
D=M/V 8.02 m3/ kg
25cm equates to 250mm
approx 7/8 of an inch