Why do helium balloons float? Talk about density of atoms and compare to elements in the air.

What is it called when the air particles bunch up

Which is a result of using a machine? O The mechanical advantage makes the work output O The machine can put out force without having any O A large force can be exerted through a long distanc O A large force can be exerted through a short distan

How long does it take a person moving at 3.0 m/s down a 200.0 m long moving sidewalk to reach the end of the sidewalk? What formula must be used?

How do particles move in the different states of matter

How many 3.2cm paperclips could fit on a football field

Since you've determined that the power supply is a 700W dual rail, what does that make the maximum output power?

A 2 m length of an aluminum pipe of 240 mm outer diameter and 10 mm wall thickness is used as a short column to carry a 640? centric axial load. Knowing that? = 73? P? and? = 0.

A python can detect thermal radiation from objects that differ in temperature from their environment as long as the received intensity of thermal radiation is greater than 0.60 W/m2. Your body emits a good deal of thermal radiation.

A planet has a mass of about 6.4 x 1023 kg, and its moon has a mass of about 9.6 x 1015 kg. if the magnitude of the gravitational force between the two bodies is 4.6 x 1015 n, how far apart are the planet and its moon? a. 9.4 x 106 c. 4.6 x 109 b. 2.

Is burning a nonrenewable natural gas a chemical change