Answer:
18 m/s
Explanation:
Range of a projectile on level ground is:
R = v₀² sin(2θ) / g
14.3 m = v₀² sin(2×13°) / 9.8 m/s²
v₀ = 17.9 m/s
Rounded to two significant figures, the launch speed was 18 m/s.
Traveling through glass (or water) is not good enough to prevent light from escaping but the use of a thick solid can be ale to prevent the escape.
<h3>What happens when light passes through glass and through water?</h3>
Glass and water are said to be thicker and heavier when compared to air. They are known to be very well denser than air.
Note that the thing that occur is that light slows down if it passes from the a medium that is less dense air into the denser glass or water. This depicts the the ray of light and also makes the ray of light to alter its direction.
Therefore, Traveling through glass (or water) is not good enough to prevent light from escaping but the use of a thick solid can be ale to prevent the escape.
Learn more about light movement from
brainly.com/question/16503945
#SPJ1
Renewable resources are going to be important in our future because if we use up all of our NON-renewable resources now, then we’ll still have the renewable resources to depend on.
I hope this helped! :-)
Answer:
The answer to your question is °C = 24.4°
Explanation:
Data
Temperature = 76°F
Formula
°C = 5/9 (°F - 32)
-Substitution
°C = 5/9(76 - 32)
- Simplify starting from the parentheses
°C = 5/9(44)
- Multiply 5 by 44
°C = 220 /9
-Divide 220 by 9
24.4
9 220
40
40
4
-Result
°C = 24.4°
Answer:
The charge on the ball bearing 4.507 × 10^-8 C
Explanation:
From Coulomb's law
F = kq1q2/r²
make q2 the subject
q2 = Fr²/kq1
q2 = (1.8×10^-2 × 0.026²) ÷ (9×10^9 × 30×10^-9)
q2 = 4.507 × 10^-8 C