which of the following statements is not true Negatively charged objects attract other negatively charged objects. Positively ch
2 answers:
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<h2>Answer:</h2>
<em><u>(a). 73° C. </u></em>
<em><u>(b). 176° C.</u></em>
<em><u>(c). 93.02°C.</u></em>
<h2>Explanation:</h2>In the question,
We have been given an equation,
(a).
We need to find the temperature of the kitchen,
So,
Time, t → ∞
On putting the value of t as infinite in the equation we get,
<em><u>Therefore, the temperature of the Kitchen is 73° C. </u></em>
(b).
The initial temperature of the bread when it is removed from the oven is at, t = 0 s
So,
On putting the value of t = 0, we get,
<em><u>Therefore, the initial temperature of the bread is 176° C.</u></em>
(c).
On putting the value of t = 90 minutes, we get,
<em><u>Therefore, the temperature of the bread after 90 minutes is 93.02°C.</u></em>
<em><u></u></em>
Answer:
a) Her feet are in the air for 0.73+0.41 = 1.14 seconds
b) Her highest height above the board is 0.82 m
c) Her velocity when her feet hit the water is 7.16 m/s
Explanation:
t = Time taken
u = Initial velocity = 4 m/s
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s²
b) Her highest height above the board is 0.82 m
Total height she would fall is 0.82+1.8 = 2.62 m
a) Her feet are in the air for 0.73+0.41 = 1.14 seconds
c) Her velocity when her feet hit the water is 7.16 m/s