Answer:
- 3 cm
Explanation:
From the mirror formula;
1/f = 1/v + 1/u ; where f is the focal length, v is the image distance, and u is the object distance.
1/-4.5 = 1/9 + 1/v
1/v = -1/4.5 - 1/9
= -1/3
Therefore;
v = -3 cm
Hence;
Image distance is - 3cm
Yep that's correct
And transverse waves move perpendicular to the direction of energy transport
It depends on how much time 45 j will go, so if you told me that it went through 45 j per minute it will go through for 2 minutes so not efficient unless it went through 45 j per hour then it is efficient.
<u>Answer</u>
C.) 1.0 x 10^2 Newton’s
<u>Explanation</u>
The Newton's second law of motion states that, the rate of change of momentum is proportional to the force producing it.
∴ F = (mv- mu)/t
Ft = mv - mu.
The quantity Ft is called the impulse.
Ft = 0.30 Newton seconds
but t = 3.0 x 10⁻³ seconds
Ft = 0.30 Ns
F × 3.0 x 10⁻³ = 0.30 Ns
F = 0.30 / (3.0 x 10⁻³)
= 100 N
Answer = C.) 1.0 x 10^2 Newton’s
