hey guys can i have some homework help plzz

hey guys im doing mechanical and manufactoring engineering and i need some help in my electrical class.

Question 1: A distribution transformer has an output power of 10 kW to the load. If it losses equal 1500 W, what is the efficiency of the transformer? Can you please show me the working out because i want to learn how you got the answer.

Question 2: Round each of the numbers to two significant numbers as follows.
A. 48100231 Joules
B. 987.556 Joules
C. 0.004014 Joules

Edit: the teacher is a fucking cock sucker he never told the class how to work it out or even give us a example on how to do it.

 

How old are you? :O (isnt engineering at college so 18+, but the questions u ask are things i learnt when i was 14 )

A1: (10000-1500)/10000 = 85%
A2: A: 48*10^6 J B: 99*10 J C: 40*10^-4 J

 

Your answer for #2 is wrong, you did scientific notation not sig figs

2A. 48,000,000
2B. 990
2C. 0.00

Wrong spot for thread too

Rs Emperor