What are electromagnetic waves? what are its characteristics? how do we classify them?

Calculate the orbital period of a spacecraft in an orbit 300 kilometers above earth's surface

1. A Rocket has been fired upwards to launch a satellite in it's orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.

Two electrons exert a force of repulsion of 1.2 N on each other. How far apart are they? The elementary charge is 1.602 * 10-19 C and Coulomb's constant is 8.987 * 109 N · m2/C2. Answer in units of m.

Light hits a flat white wall. Which of the following choices correctly describes the interaction between light and the wall?

A wheel of diameter 8.0 cm has a cord of length 6.0 m wound around its periphery. Starting from rest, the wheel is given a constant angular acceleration of 3.0 rad/s2. How long will it take the cord to unwind?

0.005098 in megaliters to liters

The active sections that are located along fault lines are called A. seismic gaps. B. seismic risks. C. stress accumulations. D. recurrence gaps

How much time does it take light to travel from the moon to the earth

What type of rock would you expect to form from the material found along a beach?

A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 * 10³ kilograms. What is the amount of mechanical work done by the vehicle?