A direct result of having greenhouse gases in the atmosphere would be energy from the sun trapping its self within the earth's atmosphere and ground, producing a lot of heat in the process since it cannot escape, making some temperatures rise substantially in some regions. However, another direct result would be plant growth. Greenhouse gasses are made of carbon dioxide, or CO2, and plants cannot live without carbon dioxide. It also causes a significant amount of water vapor which provides more rain as a direct result like it does carbon dioxide, which makes our planet healthier and able to survive easier.
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Hello,
The answer is A) a mixture. An element as defined as a pure substance, that cannot be broken down and most are typically naturally occurring. A compound occurs in chemical bonding. A substance is either a pure element or compound.
Answer:
Approximately 
upwards (assuming that 
.)
Explanation:
External forces on this astronaut:
- Weight (gravitational attraction) from the earth (downwards,) and
- Normal force from the floor (upwards.)
Let 
denote the magnitude of the normal force on this astronaut from the floor. Since the direction of the normal force is opposite to the direction of the gravitational attraction, the magnitude of the net force on this astronaut would be:
.
Let 
denote the mass of this astronaut. The magnitude of the gravitational attraction on this astronaut would be 
.
Let 
denote the acceleration of this astronaut. The magnitude of the net force on this astronaut would be 
.
Rearrange to obtain an expression for the magnitude of the normal force on this astronaut:
.
