Answer:
Option C. 1.2 m
Explanation:
The following data were obtained from the question:
horizontal velocity (u) = 2.08 m/s
Horizontal distance (s) = 0.96 m
Height (h) of the table =?
Next, we shall determine the time taken for the lab cart to get to the ground. This can be obtained as follow:
horizontal velocity (u) = 2.08 m/s
Horizontal distance (s) = 0.96 m
Time (t) =?
s = ut
0.96 = 2.08 × t
Divide both side by 2.08
t = 0.96 / 2.08
t = 0.5 s
Finally, we shall determine the height of the table as illustrated below:
Time (t) = 0.5 s
Acceleration due to gravity (g) = 9.8 m/s²
Height (h) of the table =?
h = ½gt²
h = ½× 9.8 × 0.5²
h = 4.9 × 0.25
h = 1.2 m
Thus, the height of the table is 1.2 m
Answer:
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Explanation:
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The proton number?
number of protons
Answer:
Either B or D. The answer itself is 2.
Explanation:
The equation for the kinetic energy would be 1/2*mv^2.
When m is doubled, we can plug in 1 and 2 to compare our answers.
Plugging in 1 for mass would give us the answer 1/2*v^2.
Plugging in 2 for mass would give us v^2. This means that the velocity was multiplied by 2, meaning that the answer is it is multiplied by 2.
I am not sure which answer is correct since there seems to be two answer choices with 2 in it, but the answer is either B or D (I will call it ABCD because I do not want to cause confusion by saying 2 multiple times).
C) They are made of tiny droplets of water.