Which of the following is a solution?

Dirt

Saltwater

Gasoline

Carbon

Arrows have plastic vanes or feathers that provide stability and accuracy in flight. What is the name for these vanes or feathers?

What prevents most of the sun's gamma rays from reaching us

An electric motor converts electrical energy into energy.

The jumping gait of the kangaroo is efficient because energy is stored in the stretch of stout tendons in the legs; the kangaroo literally bounces with each stride. We can model the bouncing of a kangaroo as the bouncing of a mass on a spring.

You need to determine the density of a ceramic statue. If you suspend it from a spring scale, the scale reads 28.4 NN. If you then lower the statue into a tub of water, so that it is completely submerged, the scale reads 17.0 NN.

1) How is chemical energy transformed into potential energy?

A double-paned window has two glass panes separated by a layer of air. Why is air, rather than glass, used to fill this space?

To determine waves frequency you must know the what

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

A solid weighs 277.5 g in air and 212.5 g when totally immersed in the liquid of density 0.9 g / cc. Calculate the density of the solid.