1. It produces heat in various parts which means some useful energy is lost as heat.
<span>2. More power has to be supplied due to the losses.
</span><span>3. It resist motion.
</span><span>4. Noise is produced.
</span><span>5. </span><span>Engines consumes more fuel.</span>
We have the relation
where denotes the velocity of a body A relative to another body B; here I use B for boat, E for Earth, and R for river.
We're given speeds
Let's assume the river flows South-to-North, so that
and let be the angle made by the boat relative to East (i.e. -90° corresponds to due South, 0° to due East, and +90° to due North), so that
Then the velocity of the boat relative to the Earth is
The crossing is 153.0 m wide, so that for some time we have
which is minimized when so the crossing takes the minimum 30.0 s when the boat is pointing due East.
It follows that
The boat's position at time is
so that after 30.0 s, the boat's final position on the other side of the river is
and the boat would have traveled a total distance of
Answer:
d. 0V
Explanation:
The magnitude of four point charges are +3q, -q, +2q and -4q. I think you forget to mention the signs.
As we know that the potential due to the point charge that has traveled the distance d can be represented mathematically as,
= 1/4λε = 9× Nm²/C²
Now as it is mentioned in the question that all four charges are arranged in the corners of a square so there distance from the center is same. We can rewrite the above potential equation as follows.
(1)
We can find out d by the pythagoras theorem, as we are dealing with square so d is a semi diagonal.
by putting all values in equation (1)
V =
V = 0V
Answer:
(a) T1 = 938.3lb
(b) R = 665.5lb
The detail solution to this problem can be found in the attachment below.
This problem was solved by resolving the forces along the vertical and horizontal and equating to Rx and Ry respectively. Rx = 0 because the resultant is directed along the vertical.
Explanation:
See attachment below for the full solution.
Thank you for reading.
The answer is d. Unitary elastic demand means that elastic coefficient=1. In other words, a change in the price of a good causes an equal change in the quantity of demand. The price-demand graph should be an inverse function, where the product of x, y coordinates at any point is constant.