Which is the correct symbol for an isotope of helium with 2 neutrons?

Klint and Matt decided to race go-Karts down the hill at their house. The mass of Matt's go-Kart is 86kg. Klint's cart falls apart halfway down the hill. Matt's go-cart makes it all the way to the bottom in 40 seconds.

Radio signals travel at a rate of 3 * 10^8 meters per second. How many seconds would it take for a radio signal to travel from a satellite to the surface of the Earth if the satellite is orbiting at a height of 3.6 * 10*7 meters? A.) 8.3 seconds B.

If an atom has 5 protons, 5 neutrons, and 3 electrons, what is the atom's charge? +2 -2 0 -3

A stuffed dog is tied to the end of a rope with a radius of 1 meter and swung in a horizontal circle with an angular velocity of 10 m/s.

Oliver, whose mass is 65 kg, and Olivia, whose mass is 45 kg, sit 2.0 m apart in the physics classroom. What is the force of gravitational attraction between Oliver and Olivia

The larger the push, the larger the change in velocity. This is an example of Newton's Second Law of Motion which states that the acceleration an object experiences is

Dr. Halite combined sodium metal with chlorine gas to make sodium chloride (table salt). the chemical reaction used up all of the metal and all of the gas. If Dr.

Which planet, when viewed through a telescope, appears as a reddish ball interrupted by some permanent dark regions that change intensity?

A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed? a. 50 mm/s b. 50 hertz's c. 2 mms d. 0 0.50 mms

Suppose you illuminate two thin slits by monochromatic coherent light in air and find that they produce their first interference minima at / pm 35.09 degrees on either side of the central bright spot.