Answer:
Yes, it's correct
Explanation:
Newton's second Law states that the acceleration of an object is proportional to the net force applied on it, according to the equation:
where
F is the net force on the object
m is the mass of the object
a is the acceleration of the object
We can re-arrange the previous equation in order to solve explicitely for a, the acceleration, and we find:
So, we see that the acceleration is proportional to the net force and inversely proportional to the mass of the object.
In the circuit, the total current is 60 A and the voltage is 240 V. If R1
resistance is 20 Ω, then the R2 resistance would be 5 Ω
<h3>What is resistance?</h3>
Resistance is the obstruction of electrons in an electrically conducting material. The SI unit of the resistance is Ohm
The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.
V=IR
where V is the voltage
I is the current
R is the resistance
For the given problem V= 240 V and I = 60 A
R = V/I
R =240/60
R =4 Ω
For calculating equivalent resistance in parallel combination.
1/Re = 1/R1 + 1/R2
1/4 = 1/20 + 1/R2
R2 = 5 Ω
Thus , the R2 resistance would be 5 Ω, therefore the correct answer is option B.
Learn more about resistance here
brainly.com/question/14547003
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Home heating systems work through negative feedback by regulating the temperature through thermostat.
<h3>How home heating systems work through negative feedback?</h3>
In thermostat, when the temperature of the room environment increases by the negative feedback system the furnace gets turn off, allowing the room to get to its normal temperature and when the temperature lower down it turns on again and maintain the temperature in equilibrium state.
So we can conclude that home heating systems work through negative feedback by regulating the temperature through thermostat.
Learn more about temperature here: brainly.com/question/24746268
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Answer:
because people are stupid*
Explanation:
*stupid meaning: thinking the Earth is flat
Sound waves need a medium to travel in because sounds are vibrations in mediums. That's the reason why the phrase "Nobody can hear you scream in space" came from. Space has no medium for sound to reverberate through.<span />
