Answer:
C
Explanation:
Energy is neither created or destroyed, but it can change forms...
<span>A cart travels down a ramp at an average speed of 5.00
centimeters/second. What is the speed of the cart in miles/hour? </span>
To solve this problem we have set the conversion values to
determine the product during the conversion process.
<span><span>
1. </span>1
centimeter = 0.00000621371 mile</span>
<span><span>
2. </span><span> 1 hour = 60 minutes</span></span>
<span><span>3. </span><span> 1 minute = 60 seconds</span></span>
Thus, we shall have
<span><span>1. </span>5 cm x 0.00000621371
mile/1cm = 0.000031069 mi</span>
<span><span>2. </span>0.000031069
seconds x 1 hr / 3600 = 0.111846815 miles / hr</span>
Answer:
15m
Explanation:
Hello! first to solve this problem we must find that so much that the tree grew in the 15 years this is achieved by dividing the height of the tree before and after
the tree grew 10 times its initial length in 15 years, so to find how tall the nail is, we multiply this factor by 1.5m
X=(1.5m)(10)=15m
the nail is 15 meters above ground level
Power is the rate of work done given by dividing work done by time.Efficiency is the ratio of work output to work input
power input= 100 watts
power output = x
efficiency= 0.8
thus 0.8 = x/100, therefore x = 80
power is given by energy times time
hence time = 80/300000 = 0.00026 seconds
Time in hours = 0.00026/360 = 7.407 x 10 ∧7 hours
