A box at rest has the shape of a cube 2.6 m on a side. This box is loaded onto the flat floor of a spaceship and the spaceship then flies past us with a horizontal speed of 0.80c. What is the volume of the box as we observe it

The observed volume of the box is 3.796 cubic meters.

Explanation:

The observed length is determined by the formula for the Length Contraction:

Where:

- Proper length, measured in meter.

- Lorentz factor, dimensionless.

The Lorentz factor is represented by the following equation:

If , then:

Therefore, the observed length is:

Given that , the observed length is:

The observed volume of the box is:

The observed volume of the box is 3.796 cubic meters.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.