Answer:
Approximately 
.
Explanation:
It is given that 
and 
are connected in a circuit in parallel.
Assume that this circuit is powered with a direct current power supply of voltage 
.
Since 
and 
are connected in parallel, the voltage across the two resistors would both be . Thus, the current going through the two resistors would be 
and 
, respectively.
Also because the two resistors are connected in parallel, the total current in this circuit would be the sum of the current in each resistor: 
.
In other words, if the voltage across this circuit is , the total current in this circuit would be . The (equivalent) resistance 
of this circuit would be:
.
Given that and :
.
Work, scientifically speaking, is done when a force is applied to an object which consequently moves the object at a certain direction. Work in formula, is force multiplied with distance.
W = F x d
Explanation:
it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): λ = v/f. Waves of different wavelengths.
I really think it could be a 23 kg
Answer: Magnetic and gravitational force
Explanation: When a magnet and an iron nail are kept at a distance,the magnet attracts the nail without touching using magnetic force. In this example, the magnet and the nail are interacting.
The earth pulls the moon towards it and keeps it in orbit without touching it, using gravitational force. In this example,the moon and the earth are interacting.
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