Answer:
the pe at the top of the building: 784 J
the pe halfway through the fall: 392 J
the pe just before hitting the ground: 784 J
Explanation:
Pls brainliest me
I had this question before
41.2 = h-1/2g(t-1)^2
<span> {-h = -1/2gt^2-1/2g+g*t-41.2
</span><span> {h = 1/2gt^2
</span><span> summing them up
</span><span> 0 = -1/2g+g*t-41.2
</span><span> 41.2 +4.9 = g*t
</span><span> t = 46.1/9.8 = 4.70 sec
</span><span> h = 1/2gt^2 =4.9*(4.70^2) = 108.241 m </span>
Answer:
b. 0 J
Explanation:
Work is the cross product of force and displacement. Since the bucket has 0 displacement, the net work is 0 J.
Answer:
The average value of the radiation pressure due to this sunlight in Miami is 3.467 x 10⁻⁶ N/m²
Explanation:
Given;
the average intensity of the sunlight in Miami, I = 1040 W/m²
the average value of the radiation pressure = ?
Radiation pressure is calculated as;
Where;
I is the average intensity of the sunlight
CR is solar radiation coefficient = 1
C is the speed of light = 3 x 10⁸ m/s
Therefore, the average value of the radiation pressure due to this sunlight in Miami is 3.467 x 10⁻⁶ N/m²