You are standing on the sidewalk and see a bus drive by. What would be an ideal frame of reference?

A bird flying overhead

A jogger running along the sidewalk

A car driving alongside the bus

A tree across the street

A particle of mass 7.4 * 10-8 kg and charge + 8.6 μC is traveling due east. It enters perpendicularly a magnetic field whose magnitude is 3.2 T.

If you were asked to describe a apple, how many layers would you say it has? How would you describe the layers?

The blank is the positively charged particle of the atom in the nucleus.

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? A. 2.5 B. 3 C. 7 D. 10

What is massand its si unit

Scenario A: A ramp is used to lift a refrigerator a height of 12 m with a force of 110 N. The ramp is at an angle of 50° to the ground. Scenario B: A ramp is used to lift a refrigerator a height of 13 m with a force of 120 N.

The sun is 30 degrees above the horizon. it makes a 51 m long shadow of a tall tree. part a how high is the tree?

What can destroy stuff yet does not have any mass

The small piston of a hydraulic lift has a cross-sectional of 3 00 cm2 and its large piston has a cross-sectional area of 200 cm2.

The pressure, temperature and volume of a system change differently during the process of isothermal expansion. Indicate whether each quantity increases, remains constant, or decreases.