Which one of the following is an example of an indicator?

A. High concentration

B. Presence of H - ions in solution

C. Litmus paper

D. Electricity

Jack is making a table to summarize his notes about the different types of scientific investigations. He places an X into the box that has the steps included in the investigation. Part of the table is shown.

Is the air around us full of waves?

Physics Apex: Debra and Julie push on a table in the same direction. Debra pushes forward with a force of 200 N, and Julia pushes forward with a force of 150 N. What is the net force on the table.

Two students are standing on a fire escape, one twice as high as the other. Simultaneously, each drops a ball. If the first ball strikes the ground at time t, when will the second ball strike the ground?

Why is the time needed to vaporize the sample of water significantly greater than the time needed to melt the sample? A) Significantly more energy is needed to lower the kinetic energy of the molecules.

Sebuah benda berjarak 8 cm di depan cermin cekung yang memiliki fokus 12 cm. perbesaran bayangan yang dihasilkan adalah? tentukan juga M nya?

How does gravity correspond to the bending of the space-time fabric

Compare the theories that scientists proposed about the source of the sun's energy with the process of nuclear fusion in the sun

Which wave A or B has a higher energy

What does the law of conservation of energy state about energy in a closed system?