First, convert watts to kilowatts.
500w/1000= .5 kW per hour
.5*4 hours= 2kwh*365 days= 730 kWh
The answer is 730 kwh per year
An establishment of the directory (i think)
Answer:
Rusting metal can: Chemical
Boiling water: Physical
Crushing aspirin: Physical
Exploding nitroglycerin: Chemical
Answer:
Bart can travel 130 miles in 2.5 hours with this rate
Explanation:
Bart travels 52 miles per hour
For 2.5 hours first find for two hours and then for half hour. finally add this two and half hour to get for 2.5 hours.
2.5 hours=2 hours + half hour
2 hours= 1 hour × 2
= 52 miles × 2 = 104 miles
half hour= 1 hour ÷ 2
=52 miles ÷ 2 = 26 miles
2.5 hours = 104 miles + 26 miles
= 130 miles
