Answer:
It's red
Explanation:
Blue light has a shorter distance between wave crests than orange light. Red light has a longer distance between wave crests than blue light.
Obviously C. Search up "White Stork" and it's the same Image
(a) When the spring is compressed 4.5 cm = 0.045 m, it exerts a restoring force on the block of magnitude
<em>F</em> = (1900 N/m) (0.045 m) = 85.5 N
so that at the moment the block is released, this force accelerates the block with magnitude <em>a</em> such that
85.5 N = (1.15 kg) <em>a</em> ==> <em>a</em> = (85.5 N) / (1.15 kg) ≈ 74.3 m/s²
The block reaches its maximum speed at the spring's equilbrium point, and this speed <em>v</em> is such that
<em>v</em> ² = 2 (74.3 m/s²) (0.045 m) ==> <em>v</em> = √(2 (74.3 m/s²) (0.045 m)) ≈ 2.59 m/s
(b) There is no friction between the block and plane, so the block maintains this speed as it slides over the edge. At that point, it's essentially in free fall, so if <em>y</em> is the height of the plane, then
(7 m/s)² - (2.59 m/s)² = 2<em>gy</em> ==> <em>y</em> = ((7 m/s)² - (2.59 m/s)²) / (2<em>g</em>) ≈ 2.16 m
Explanation:
If velocity is increasing uniformly with time, this means the acceleration is constant. So we can use this formula,
Initial Velocity+Final Velocity/2.
Our total Velocity is 60 m/s. Let convert minutes to seconds, which is 120 seconds so we get
60m/s/120 s which we get 0.5 m/s.
Average velocity is 0.5 m/s^2.
Answer:
Explanation:
mass of the water being lifted per second
m = volume x density
= 6.2 x 1 = 6.2 kg
height by which water being lifted
h = 75 - 21
= 54 m
increase in potential energy of water per second
mgh
6.2 x 9.8 x 54
= 3281.04 J /s
= 3281.04 W.