I will fan and give 2 medals!

Why is it necessary to be able to replicate the results of a scientific experiment?

(this is short answer)

The reactivity of an alkali metal depends on the metal's ability to electrons. True or False

Which term is used to describe all the different populations that live in a habitat? Adaptation Genetic diversity Natural selection Species diversity

Which of the following describes cohesive forces of water

Use the drop-down menus to explain how noise cancellation works. Waves with similar are created to interfere with unwanted sound waves. The wave overlap with the troughs of the other wave, causing the two waves to cancel out each other. of one

How can a mountain change the amount of precipitation an area receives?

calculate the force exerted on a rocket given that the propelling gases are expelled at a rate of 1500 kg/s with a speed of 4.0x10^4 (at the moment of take off)

Which of the following statements about electrons is not true? A) Electrons orbit the nucleus rather like planets orbiting the Sun. B) Within an atom, an electron can have only particular energies.

In longitude waves, the medium moves parallel to the direction of energy transport

Thomsonâs experiment is credited with the discovery of which particle?

When you drop a pebble from height h, it reaches the ground with kinetic energy k if there is no air resistance. from what height should you drop it so it will reach the ground with twice as much kinetic energy?