The answer is: 720W
The definition of Power is:P =L/t =→F⋅→s/t =→F⋅→s/t = →F⋅→v
The ⋅ in the last formulation designate a scalar product, well-defined by:
→v . →w = |v| |w| cos(ˆvw), the angle ˆvw is 0 because →F and →v are parallel, so the cosinus is 1.
So: P=1800N⋅ 0,40m/s=720W.
540 meters should be the answer
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The conversion factor needed to change from kilometers to meters is
D) 1000
Explanation:
The meter (m) is the SI units to measure distance.
The kilometer (km) is a sub-unit, where the prefix 'kilo' stands for , or 1000. This means that:
Therefore, if we have a length expressed in kilometers, we just need to multiply by 1000 to get the corresponding length in meters.
For instance, if we have a length of
L = 3.47 km
To convert in meters, we do:
Learn more about distance here:
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He Milgram Experiment<span>. One of the most famous studies of obedience in psychology was carried out by Stanley </span>Milgram<span>, a psychologist at Yale University. He conducted an </span>experiment<span> focusing on the conflict between obedience to authority and personal conscience. ... </span>
The description of the problem is a bit ambiguous as "<span>increasing at the rate of </span>3 inches more than the time" can be interpreted in many ways. Assuming the increase rate is the (3+t) per second and as it expands for 3 seconds, then the diameter of the sphere would be:
d= (3 + t)*t
d= 3t + t^2= 18
r= 1/2 d
r= 1/2*18= 9
volume= 4/3 * pi * r^3
volume= 4/3 * pi * 9^3
volume= 4/3 * pi * 729= 972 pi cubic inches