The motion of a skateboarder along a horizontal axis is observed for 5 seconds. The initial position of the skateboarder is nega
tive with respect to the origin, and its velocity throughout the 5 seconds is also negative. At the end of the 5 seconds, is the skateboarder closer to or further from the origin (compared to where it started)?
Why? Explain.
Why? Explain.
1 answer:
Answer:
The skateborder is further from the origin.
Explanation:
In order to visualize this problem better we need to sketch what the situation looks like. (See attached picture)
Now, generally we will take the left side as the negative direction. As you may see in the picture, the skateborder starts to the left of the origin and he has a negative velocity as well, so he would be moving left all the time. After the 5 seconds, the distance between the origin and the skateboarder is even greater than it was before. This is because he kept moving left. So he will be further from the origin compared to where it started.
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Answer:
(a) the electrical power generated for still summer day is 1013.032 W
(b)the electrical power generated for a breezy winter day is 1270.763 W
Explanation:
Given;
Area of panel = 2 m × 4 m, = 8m²
solar flux GS = 700 W/m²
absorptivity of the panel, αS = 0.83
efficiency of conversion, η = P/αSGSA = 0.553 − 0.001 K⁻¹ Tp
panel emissivity , ε = 0.90
Apply energy balance equation to determine he electrical power generated;
transferred energy + generated energy = 0
(radiation + convection) + generated energy = 0
(a) the electrical power generated for still summer day
(b)the electrical power generated for a breezy winter day
Answer:
Explanation:
Given data
To find
Mutual inductance of the two-coil system
Solution
The mutual inductance given as:
M= (-VΔt)/ΔI
Substitute the given values
So