Answer:
Step-by-step explanation:
2^{60}=8^x
2^{60}=(2^3)^x
2^{60}=2^{3x}
60=3x
x=20
19000 is the answer because i think it is looks it up idk sorry
Answer:
1.58L
Step-by-step explanation:
To convert from "milli-" to L would be to divide by 1000. One mL is the equivalent to a thousandth of a L, and one L is the equivalent of one thousand mL.
Answer:
The percentage increased by approximately 5%.
Step-by-step explanation:
52.10 - 49.62 = 2.48
2.48/49.62 x 100 = 4.998%
The percentage increase in the price is approximately 5%. Hope this helps! :)
Answer:
1. 600 watts
2. 35640 J
3. 55%
4. 20 J
5. The cost of running the fire is 8p.
Step-by-step explanation:
1. Energy = 36 000 J , t = 1 minute = 60 seconds
Power =
=
= 600 watts
2. Power =
⇒ work done = Power × time
= 99 × 360
= 35640 J
3. Efficiency = (Output / Input) × 100
= × 100
= 55%
4. Work done = Force × distance
= 5 × 4
= 20 J
5. Given that 1 KWh cost 2p, Power = 4 KW and time = 4 hours.
Power =
Energy = Power × time
= 4 × 4
= 16 KWh
The cost of running the fire =
= 8p