Answer:
Explanation:
the SI base unit of mass length and time
mass =kg =kilogram
length=m=meter
time=s=second
The answer is b. because they move freely
Answer:
a)
b)
Explanation:
From the question we are told that:
Speed at point A
Speed at point C
Time from Point A to C
Time from Point B to C
Generally the equation for acceleration From A to B is mathematically given by
Generally the equation for cart speed at B is mathematically given by
According to the theory of evolution, _favorable_ traits will become common in a population over time.
"Favorable," that is in a survival sense. Remember, all that matters [to the genes] is for the individual to function and survive long enough to reproduce, and thus continue those genes into a new generation, the offspring. Natural selection finds certain adaptations "favorable" if they aid in the individual's ability to survive long enough to reproduce. Evolution, on the other hand, looks at a population and how over time these favorable genes change the individuals' genetic makeup within that population.
The power output of second motor is 9.8 10^3 W.
<u>Explanation:</u>
Power is defined as the rate of doing electric work. I short it can be viewed as
Power = work done / time
Work done is the product of mass, gravity, and height. (i.e. mgh)
Given that m = 1000 kg, h = 10 m, g = 9.8 m / s^2, t = 10 s
Power = work done / time
= (m g h) / time
= (1000 9.8 10) / 10
power = 9800 W = 9.8 10^3 W.