Answer: 9.9%
Explanation: efficiency = (work output /work input) × 100
Note that, 1 kilocalorie = 4184 joules, hence 22kcal = 22× 4184 = 92048 joules.
Work output = 9200 j and work input = 92048 j
Efficiency = (9200/92048) × 100 = 0.099 × 100 = 9.9%
Nichrome is usually used as the rod to heat water using electricity. It is an example of Nickel and belongs to the element Nickel in the periodic table.
If the canyon below is 100.0 m deep, the rocket travels from the edge of
the cliff 226m in the horizontal direction.
<span>When </span>air resistance<span> acts, acceleration during a fall will be less
than g because </span>air resistance affects<span> the motion of the falling objects by slowing it
down. </span>Air resistance<span> depends on two important factors -
the speed of the object and its urface area.
Increasing the surface area<span> of
an object decreases its speed.</span></span>
The correct answer between all
the choices given is the first choice or letter A. I am hoping that this answer
has satisfied your query and it will be able to help you in your endeavor, and
if you would like, feel free to ask another question.
Adding both distances together, you get a total of 1800 miles. With the total travel time of 4 hours, you divide the distance traveled by the time it took. so 1800/4=450 mph
