Air at the poles tends to flow close to the surface toward the equator. What can you conclude about the characteristics of this polar air?

Some energy is free but other types must be bought true or false

A train travels 76 kilometers kilometers in 2 hours and then 54 kilometers in 5 hours. What is tuts average speed?

What are the 8 steps of the scientific method, in order?

Which statements about kinetic energy are true? It's always transformed into potential energy. It's always associated with motion, It can be transferred from one object or body to another. It's found only in objects moving in a straight line.

A 12.0 g bullet was fired horizontally into a 1 kg block of wood. The bullet initially had a speed of 250 m/s. The block of wood was hanging from a 2 m long piece of (massless) string.

Technician A says balance shafts are used to counteract vibration created in the engine. Technician B says proper balancing of the engine is important for smooth operation. Which technician is correct?

Is it True or Flase that Materials that poor conductors are poor insulators?

A fish tank with insidd dimensions of 124 cm * 94 cm * 224 cm is filled with water, what is the volume?

In the 1920s what did Edmund hubble notice about the galaxies

A rod of mass M = 154 g and length L = 35 cm can rotate about a hinge at its left end and is initially at rest.