C because I did the math yesterday
Answer: 8.75 km/hr
Explanation:
Concept to know
Average speed: total distance/total time
-------------------------------------------------------
total distance/total time
=(12.2+19.3)/(1.4+2.2) ⇔ add the numbers of two time running together
=31.5/3.6 ⇔ simplify
=8.75 km/hr
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Answer:
Change in internal energy AU = 40 J
Explanation:
Given:
Amount of heat added = 70 J
Work done = 30 J
Find:
Change in internal energy AU
Computation:
The net thermal conductivity into a process less the net work performed by the system represents the shift in internal energy.
Change in internal energy AU = Q - W
Change in internal energy AU = 70 J - 30J
Change in internal energy AU = 40 J
1. The equivalent resistance in a <em>series </em>circuit, like the one shown, is given by the general equation
where <em>N </em>is the number of resistors in series. Here, there are four resistors in series. Using our equation with <em>N = 4</em>, we obtain
2. The current in this series circuit is equal to the voltage divided by the equivalent resistance (a relationship you can derive from Ohm's law):
Answer:
Explanation:
The standard unit of displacement in the International System of Units ( SI ) is the meter (m).