A resistor with an unknown resistance is connected in parallel to a 13 ? resistor. when both resistors are connected in parallel
to an emf source of 13 v, the current through the unknown resistor is measured with an ammeter to be 3
a. what is the resistance of the unknown resistor? answer in units of ?.
a. what is the resistance of the unknown resistor? answer in units of ?.
1 answer:
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Answer:
a) 919 m
b) 183.8 m
Explanation:
140 calories = 140 * 4186 J/calorie = 586040 J
a)When the hiker climbs a mountain, this energy is converted to potential energy, which has the following formula
where m = 65 kg is the mass, g = 9.81 m/s2 is the gravitational acceleration and h is the height that he climbs
b) If only 20% of food energy goes into mechanical energy, then the actual potential energy is
586040 * 0.2 = 117208
Similarly, the height that he could climbs is