If an airplane travels a distance of 500 km in 5 hours, what is its average speed?

Salt water has greater density than fresh water. a boat floats in both fresh water and in salt water. where is the buoyant force greater on the boat?

You charge an initially uncharged 89.9-mf capacitor through a 30.5-ω resistor by means of a 9.00-v battery having negligible internal resistance. find the time constant of the circuit. what is the charge of the capacitor 1.

Which of the following are examples of projectile not

A spherical, non-conducting shell of inner radius r1 = 10 cm and outer radius r2 = 15 cm carries a total charge Q = 15 μC distributed uniformly throughout its volume. What is the electric field at a distance r = 12 cm from the center of the shell?

How does the force of attraction change? A) The force becomes twice as much. B) The force becomes one-half as much. C) The force becomes four times as much. D) The force becomes one-quarter as much.

All atoms of an element have the same?

Select the correct answer. When waves travel through water, why do the moving water particles continue to return to their starting position? A: Waves transfer matter, but not energy. B:Waves transfer both matter and energy.

Daniel has a sample of pure copper. It's mass is 89.6 grams (g) and it's volume is 10 cubic centimeters (cm3) what is the density of the sample

Why do scientists believe the universe is still expanding

What information on the periodic table is used to complete electron dot diagrams?