Answer:
4.3 m/sec
Explanation:
Here height of cliff = y = 37.6 m
Gravitational acceleration = g = 9.8 m/sec2
vi = 0 m/s
Let's find the time which the diver will take if jumps from there!
Using formula
y = vit+1/2gt2
==> 37.6= 0 + 0.5 ×9.8×
==>=
==> t = 2.8 sec
In this time the diver has to cover a horizontal distance of 12.12 m
If x = 12.12 m is the horizontal distance to be covered then using
x= Vx × t
==> Vx = x/t
==> Vx= 12.12/2.8 = 4.3 m/s
Answer: 99.64 nm (≅ 100 nm)
Explanation: In order to explain this problem we have to obtain destructive inteference from two waves that reflect in the film and lens surface so both waves have a λ/2 shift then we have to get a difference path (2L) equal to an odd number of the half wavelegth.
Then we have the following expression:
L=(m+1/2)* λ/(2*n2); where n2 is the refractive index of the coating
for m=0 we have the minimum thickness for the coating
L=λ/(4*n2)=99.64 nm (≅ 100 nm)
Answer:
1 gallon = 3.8 liters rounded to the nearest tenth.
Explanation:
1 gallon = 3.785 litres.
We have to round this in to nearest tenths, nearest tenth means number of figures after decimal = 1.
Here last digit is 5 so we have to add 1 to previous digit.
So, 3.785 rounded will become 3.79
For 3.79 the last digit is 9 so we have to add 1 to previous digit.
So, 3.79 rounded will become 3.8
3.785 liters rounded to the nearest tenth is 3.8 liters.
1 gallon = 3.8 liters rounded to the nearest tenth.
Explanation:
32. The area under the curve from t = 0 and t = 2 is the area of the triangle. The base of the triangle is 2 seconds, and the height of the triangle is 2 m/s. The area is therefore:
A = ½ bh
A = ½ (2 s) (2 m/s)
A = 2 m
33. The car is not moving when the velocity is 0 m/s. This occurs at t = 0, t = 6, and t = 10.
Cause bubbles are magical