Your friend Nader is standing 400,000 meters away. If you send a message to him using radio waves, how long will it take for him to receive it? Round to four decimal places.

What do the arrows in food chains represent

Formula for displacement

A flat, circular loop has 15 turns. The radius of the loop is 10.5 cm and the current through the wire is 0.51 A. Determine the magnitude of the magnetic field at the center of the loop (in T).

List four landforms created by wave erosion?

Which of these is not a difference between sound and electromagnetic waves? Electromagnetic waves are transverse and sound waves are longitudinal. Sound waves travel fastest through solids, but light waves travel slowest through solids.

The starship enterprise returns from warp drive to ordinary space with a forward speed of 50 km/s. to the crew's great sur - prise, a klingon ship is 100 km directly ahead, traveling in the same direction at a mere 20 km/s.

What do you use to measure potential difference

A force F = 94.9 N acts at an angle α = 35◦ with respect to the horizontal on a block of mass m = 29.3 kg, which is at rest on a horizontal plane. The acceleration of gravity is 9.81 m/s 2. If the static frictional coefficient is µs = 0.

Which statements about eclipses are true? Check all that apply. Earth's shadow creates a solar eclipse. A total lunar eclipse has a reddish color. The moon moves between Earth and the Sun during a solar eclipse.

Who would use more energy in a day - someone who plays a lot of sport or someone who plays a lot of computer games