If you cause the surfaces between two touching objects to change, how will the friction be affected? make a claim. support your explanation with evidence and logical connections.

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton