Answer:
Science is changing because little by little scientists descover new things.
Explanation:
Discovery
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Answer:
Speed of car A is half the speed of car B.
Explanation:
Kinetic energy,
Car A has twice the mass of car B.
Car A has the half the kinetic energy of car B
We have
Speed of car A is half the speed of car B.
<span>The drag force acts opposite to the direction the cars' motion and the propelling force is in the direction of the motion. These are the two forces acting on the car and since they are both equal and opposite in direction, they cancel out each other. Thus, the car is able to move at a constant speed without changing its direction or momentum.</span>
Answer:
The total area of rooftop solar panels is 130.61 m².
Explanation:
Given that,
Efficiency = 15%
Intensity of sunlight
Power = 19.2 kW/d
Let sun's power need be P.
We need to calculate the power
We need to calculate the total area of rooftop solar panels
Using formula of power
Where, I = intensity
A = area
P = power
Put the value into the formula
Hence, The total area of rooftop solar panels is 130.61 m².