Friction between two flat surfaces can be divided into two categories. What are the two most common kinds of friction?

Air resistance

Fluid

Static

Kinetic

Which of the following is not an example of a communication channel? a. television b. Internet c. letters d. traveling

If a 375 watt heater has a current of 5.0 A, what is the resistance of the heating element?

How many people does it take to build a rocket ship

Why does a person's mass stay the same when he travels to the moon, but his weight changes? Give a detailed answer that includes scientific terms.

Recrystallization involves any chemical, physical, or biological changes that take place after sediments are deposited and burial and lithification occur when unconsolidated sediments are transformed into sedimentary rocks. True or False?

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite

Oxygen makes up the largest part of living cells at 65%. What is the percentage of the second-most abundant element in living cells?