What describes how much matter is in a object?

Two ladders of uniform density and equal mass m are propped up against each other at angles from the frictionless ground. A rope of tension T connects the two horizontally a distance / from the center of each ladder. Each ladder is of length L.

If 60 lbs of force must be applied to the valve for it to open, how much upward force must push rod X apply for the valve to open?

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How long (in ns) does it take light to travel 1.30 m in vacuum?

Why does atomic radius decrease from left to right?

The density of uranium is 18.8 g/cm3. part a what is this value in kilograms per cubic meter?

What name is given to the variable we plot on the x-axis? A. The dependent variable B. The independent variable c. The linear variable D. The inverse variable

What force is required to accelerate a body with the mass of 15 kilograms at a rate of 8m/s2?

Indicate whether the statement is true or false. A scientific fact is something that is absolute and unchanging.

Show the formula and caculate the speed of a car that traveled 100 km in 2 hours