Answer:
Explanation:
The constant speed means that ball is not experimenting acceleration. This elements is modelled by using the following equation of equilibrium:
Now, the exerted force is:
The volume of a sphere is:
Lastly, the force is calculated:
Answer:
Frequency and tfcvvbyfgffhhi
Object: Clouds
Observation: The clouds are white, fluffy looking, and moving a little fast. Some are more see through than others and not as fluffy looking. They make different shapes and hide the sun very well. Some are very white and others are darker than others.
Questions: why are there so many clouds one day but none the next day? Why does it rain if the sky is sunny and the clouds are not grey and dark? Why isnt the sun stronger than the clouds?
The density of a material is given by:
where
d is the density
m is the mass of the sample
V is its volume
In our problem, the material has a mass of m=2.75 g and a volume of
, so its density is:
So, the correct answer is D).