Why is argon gas used instead of air in light bulbs that contain a filament that is heated to glowing?

The energy to power the calvin cycle comes from

How to atoms behave in non-magnetic items?

A helicopter lifts a 66 kg astronaut 18 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/15.

Joanna's house is 8000 feet due west of her school. If her house is assigned the position of zero and her school is assigned the position of + 8000, what would be Joanna's position if she walked 100 feet west of her house?

Which of the following statements about gemstones is true? Choose one: A. Emerald is a gemstone variety of the common mineral corundum. B. In order to be considered precious or semiprecious, a gemstone must be transparent. C.

Which of the following correctly identifies a voltage source and its method of developing electric potential? a. primary cell-heat action on a device b. thermocouple-chemical action c. dry cell-chemical action d. generator-genetic action

A car travels from boston

What number is between 2000 and 2500

How do aeroplanes fly?

What is constant acceleration?