Does every scientific method begin with an observation? explajn.

A truck travels 6 meters in the first second of travel, 6 meters again during another second of travel, and 6 meters again during the third second of travel. it's acceleration is? a) 18 m/s^2 b) 12 m/s^2 c) 6 m/s^2 d) 0 m/s^2

Which of the following is true about radio waves? they have short wave lengths they can penetrate dust clouds they have high energies they reveal hot gasses

If you are traveling in a primary channel and you encounter a red and green marker (with the green band on top) when proceeding in an upstream direction, what must you do

How are the wavelength and frequency of a wave related? as frequency increases, wavelength increases as frequency increases, wavelength decreases wavelength remains constant as frequency changes wavelength and frequency are not related?

A circular coil of 124 turns has a radius of 1.86 cm. (a) Calculate the current that results in a magnetic dipole moment of magnitude 3.28 A·m2.

Why does an object's mass and speed cause it to have kinetic energy?

Eratosthenes used what object to determine the size of Earth? A) Pyramids in Giza, B) Tower in Babel, C) Sphinx in Alezandria, D) Well in Alexandria

A major process by which the Sun's energy is transported around the Earth system?

Charge 1 is - 30 μC, charge 2 is 5 μC, the distance between the charges is 8 cm, and they are located in a vacuum. If the third charge of 3 μC would be placed into position B, i. e.

For water vapor to turn back i to a liquid what do you do to it's temperature