if you blow up a ballon, tie it off and release it, it will fall to the floor. why does it fall instead of float?

1. The Sun orbits the center of the Milky Way. True False

A solvent passes through a chromatography column in 3.0 minutes, but the solute requires 9.0 minutes. (a) What is the retention factor, k? (b) What fraction of the time does the solute spend in the mobile phase in the column?

Do winds and currents flow faster at the equator than at the poles, or more slowly? Think about what you know regarding the shape and rotation of the Earth, the directions of currents, and convection. Make inferences from what you know.

When you push a box across the floor, the box experiences what kind of friction? I think it's kinetic friction. A: Cohesisve friction B: Potential friction C: static friction D: Kinetic friction E: Rolling friction.

Which of the following benefits has Florida experienced from space exploration? Space exploration has developed better spacesuits. We know more about deep-space objects. Space exploration has changed our culture.

Which group of measurements is the most precise? A) 2 g, 3 g, 4 g B) 2 g, 2.5 g, 3 g C) 2.0 g, 3.0 g, 4.0 g, 5.0 g D) 2.0 g, 3.0 g, 4.0 g

A 946.4 kg (2083 lb) car is moving at 14.8 m / s (33.0 mph). Calculate the magnitude of its momentum.

How do the positions of the hot and cold water affect the speed of convection

A fan is to accelerate quiescent air to a velocity of 12.5 m/s at a rate of 9 m3/s. Determine the minimum power that must be supplied to the fan. Take the density of air to be 1.18 kg/m3.

In which situation will the lowest resistance occur?