Answer:
C. The left wire attracts the right wire and exerts as much force as the right wire does.
Explanation:
To know what is the answer you first take into account the magnetic field generated by each current, for a distance of d:
Next, you use the formula for the magnetic force produced by the wires:
if the direction of the L vector is in +k direction, the first wire produced a magnetic field with direction +y, that is, +j and the second wire produced magnetic field with direction -y, that is, -j (this because the direction of the magnetic field is obtained by suing the right hand rule). Hence, the direction of the magnetic force on each wire, produced by the other one is:
Hence, due to this result you have that:
C. The left wire attracts the right wire and exerts as much force as the right wire does.
Answer:
4Q
Explanation:
Case 1 :
= mass of the metal
= specific heat of the metal
= Change in temperature = 7 - 4 = 3 C
Amount of heat required for the above change of temperature is given as
Case 2 :
= mass of the metal
= specific heat of the metal
= Change in temperature = 19 - 7 = 12 C
Amount of heat required for the above change of temperature is given as
Hence the correct choice is
4Q
<span>"the true statement is: An ellipsis indicates the omission of a word or word
Here is an example on the usage of ellipsis:
I don't know . . . i'm not even sure how i feel about him.
The dots acted as an interlude that connected one response with another statement</span>
From the definition of the first Law of thermodynamics we know that heat flows from the hottest object to the coldest. What has a refrigerator inside is a refrigerant that is traveling through some heat exchangers, driven by pumps and that allows the exchange of heat between a 'Hot' tank and then transport it to a certain place, eject it and return to extract more heat. In this way the refrigerant removes heat from a hot region to a cold region and heat enters said hot region. Since the heat extracted is greater than that of the medium, the heat from the inside flows outward.
The correct answer is B.
<span><span>1.
</span>All clouds are made up of tiny ice crystals or small
water droplets that form together with a dust on the atmosphere.
Cirrus, cirrostratus and cirrocumulus are made up of ice crystals. It forms
when the water vapor goes condensation at high altitudes in where the pressure
on the atmosphere reaches the point from 600 mbar at 4000 meter above the sea
level up to 200mbar at 12 000m above sea level. These clouds form
thunderstorms, cyclones and contrails (a manmade cloud).</span>
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