The speed of the ball 0.60 seconds after it is released is 6.8 m/s.
Newton's law of motion is given by:
v = u + gt
where v is the final velocity, u is the initial velocity, g is the acceleration due to gravity and t is the time.
Given that:
u = 0.8 m/s, g = 10 m/s², t = 0.6s. Hence:
v = 0.8 + 10(0.6)
v = 6.8 m/s
Therefore the speed of the ball 0.60 seconds after it is released is 6.8 m/s.
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Answer:
B a dilation with a scale factor of 1/4 and then a translation
Explanation:
on edgenunity
When the PH is 7.0, the hydronium Ion Concentration is gotten as; [H3O+] = 1 × 10^(-7) M
<h3>How to find the Concentration of an Ion? </h3>
The formula to find the pH of an Ion concentration is;
pH = - log [H3O+]
where;
[H3O+] is the molar concentration of hydronium ion.
We are told that the pH is 8.0. Thus;
8.0 = - log [H3O+]
10^(-8) = [H3O+]
[H3O+] = 1 × 10^(-8) M
Thus, when pH = 7.0, we have;
7.0 = - log [H3O+]
[H3O+] = 1 × 10^(-7) M
Complete question is;
When the fish-tank water has a pH of 8.0, the hydronium ion concentration is 1.0 × 10-8 mole per liter. What is the hydronium ion concentration when the water has a pH of 7.0?
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The missing reason in the congruency proof given the parameters is; Definition of a perpendicular bisector.
<h3>How to prove congruency theorems?</h3>
We are given;
Triangle QPT is similar to triangle QRT.
SP ≅ SR
Now, According to perpendicular bisector definition, we know that perpendicular bisector is a line or a segment that is perpendicular to a segment and passes through the midpoint of the segment. This means that any point on the perpendicular bisector is equidistant from the endpoints of the line segment.
Thus, we can say that PT ≅ RT and the missing reason is definition of a perpendicular bisector.
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