Ruby, a variety of the mineral corundum is in the trigonal crystal system, with hexagonal scalenohedra crystals
Answer:
Explanation:
Work done in lifting the weight once = mgh
= 20 x 9.8 x (1.9+1.7)
= 705.6 J
= 705.6 / 4.2 calorie
= 168 cals
Total energy to be spent = 600 x 10³ cals
No of times weight is required to be lifted
= 600 x 10³ / 168
= 3.57 x 10³ times
Total time to be taken = 2 x 3.57 x 10³
= 7.14 x 10³ s
=119 minutes .
Answer:
if you multiply the coefficient to the denominator you will find that the percentage of increase is equal to your ending point
Explanation:
In a velocity-time graph, the area under the curve represents the distance.
The distance traveled from 10s to 18 s is

Final Answer: The distance traveled is 40 m from time 10 s to 18 s.