Answer:
Convex or converging lens.
Because they help to magnify the image or increase the size of the image you are viewing when light is reflected on it or to make the quality of the image clearer to view.
Explanation:
They both make use of Convex or converging lens.
Both lenses are very important because they help to magnify the image or increase the size of the image you are viewing when light is reflected on it or to make the quality of the image clearer to view.
Answer:
549 gallons
Explanation:
1 gallon of radioactive material was added to unknown volume of gasoline which we will represent as V in gallons.
Initially the 1 gallon gives a 5500 counts per minutes (cpm)
After adding to an underground gasoline tank, the total volume becomes
(V + 1) gallons
1 gallon was withdrawn from the underground and gave 10 cpm
using simple proportion and assuming the gasoline has mixed together
1 gallon gave 10 cpm
10 (V + 1) gallons should give 5500cpm
10 (V+1) = 5500cpm
divide both side by 10
V+1 = 5500 /10 = 550
V = 550 -1 = 549 gallons
Answer:
The centripetal acceleration changed by a factor of 0.5
Explanation:
Given;
first radius of the horizontal circle, r₁ = 500 m
speed of the airplane, v = 150 m/s
second radius of the airplane, r₂ = 1000 m
Centripetal acceleration is given as;
At constant speed, we will have;
a₂ = 0.5a₁
Therefore, the centripetal acceleration changed by a factor of 0.5