A geologist needs to measure the density

of an irregularly shaped pebble.

a Describe how she can find its volume by the method of displacement.

b What other measurement must she make if she is to find its density?

LPG is a useful fuel in rural locations without natural gas pipelines. A leak during the filling of a tank can be extremely dangerous because the vapor is denser than air and drifts to low elevations before dispersing, creating an explosion hazard.

Supplies are dropped from an airplane on to a remote island. A parachute is used to reduce the impact when the supplies strike the ground.

1. How is nuclear notation for an electron different than we symbolize electrons in the rest of chemistry? Do your best, don't stress. 2. Why is gamma radiation written with two zeroes? 3.

Which best defines nitrogen fixation? the process of creating free nitrogen for plants to absorb the breakdown of nitrogen in the soil the conversion of nitrogen gas into a usable form the destruction of the bonds between nitrogen and other elements

Fluid originally flows through a tube at a rate of 100 cm³/s. To illustrate the sensitivity of flow rate to various factors, calculate the new flow rate for the following changes with all other factors remaining the same as in the original

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?

According to bohr's theory, how do electrons move around the nucleus

On a very hot summer day, railroad tracks can buckle, causing train delays and derailments. Select the best reason below for the buckling.

How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?

What are the two factors that determine an objects gravitational potential energy