Answer:
D) 4.9 m/s
Explanation:
Speed of Object in Free Fall
s = Rate of Acceleration, Due to Gravity × Length of Time
s = 9.8 × 2.0
s = m/s (Round Up to The Nearest Whole Number)
--
m/s = 9.8 ÷ 2.0 = 4.9 m/s
They help scientists explain concepts that are difficult to observe.
If the heat change of the surroundings (such as the solution the reaction is occurring in) is determined to be 2.7 kJ, what is the heat change of the reaction (qrxn)?
Answer: First of all we can conclude that this is an exothermic reaction. The reason being that an exothermic reaction is one that produces a temperature increase in a isolated system giving off heat to the surroundings. Therefore the heat of the reaction is a negative quantity (qrxn < 0).
I hope it helps, Regards.
Good morning.
The only reason I answered this is because this question was looking lonely. Like, /desperate lonely/. Anywho, let's work.
Proteins are biomolecules that have multiple jobs to do in an organism. Examples of their functions are below.
1. They are used to transport molecules.
2. They are used to place/store molecules.
3. They are needed for movement of the cell.
Answer:
A) 0.120
B) 1.6s
C) 0.625 Hz
Explanation:
Here, X = 0.120 m
x = 0.120 m after t = 0.800 s
A- Amplitude = max displacement from equillibrium position = 0.120 m
B- Period = 2 * 0.800 = 1.6 s
C- Frequency = 1/peroid = 1/1.6
f = 0.625 Hz
