Question

Q1=1200Дж n=30% Q-? ​

Answer 1

n=Q1/Q2 => Q2=Q1/n=1200Дж/0,3=4000Дж

Answer 2

Q = Q1 * n

Q = 1200Дж * 0,3 = 360Дж

Answer 3

To find the value of Q, we can use the equation:

Q = Q1 / (n / 100)

where Q1 is the initial quantity of energy (in joules) and n is the efficiency as a percentage.

Plugging in the values given: Q1 = 1200 J n = 30%

Converting the percentage to a decimal: n = 30 / 100 = 0.3

Now we can calculate Q: Q = 1200 J / (0.3) = 4000 J

Therefore, Q is equal to 4000 joules.