The zebra could be "hen pecked" if the vulture was a hen bird. On the other hand, the two might get along ok. In UK, it they 'd make a useful combination helping each other to cross increasingly dangerous roads (joke).
<span>The second law of thermodynamics states that the entropy of any isolated system always increases.
So the paper tends to approach high entropy
Answer is C</span>
i believe it would be the same because time doesn't matter when calculating total work done.
Work=FxD
F=force
D=distance
Answer:
v = 3.24 m/s
Explanation:
Since we don't have time, we can use the formula;
(Final distance - initial distance)/time = (initial velocity + final velocity)/2
Thus;
(x_f - x_i)/t = ½(v_xi + v_xf)
We are given;
x_i = 0 m
x_f = 5 m
v_xi = 0 m/s
v_xf = 5 m/s
Thus, plugging in the relevant values;
(5 - 0)/t = (0 + 5)/2
5/t = 5/2
t = 2 s
Using Newton's first law of motion, we can find the acceleration.
v = u + at
Applying to this question;
5 = 0 + a(2)
5 = 2a
a = 5/2
a = 2.5 m/s²
To get the speed, in m/s, of the block when it had traveled only 2.1 m from the top, we will use the formula;
v² = u² + 2as
v² = 0² + 2(2.5 × 2.1)
v² = 10.5
v = √10.5
v = 3.24 m/s
Work = force x distance (displacement) or the change in Kinetic energy
Carrying a box down a corridor has no external force acting on the box and therefore no work is being done.
Pushing against a locked door doesn't displace the door, so no work is being done.
Suspending a heavy weight with a strong chain requires, no force and actually prevents a force from acting on the chain.
Pulling a trailer up a hill on the other hand requires a person to apply a force to the trailer and displace it up the hill and therefore it requires work.
