Answer:
The value of Q is - 8 C
Explanation:
Given;
the magnitude of first charge = 2 C
position of the first charge = 0
_ (2m) 0(+2C) +(2m)(Q)
------------------------------------------------------------------------------------
E₁ --------------------------------->
<------------------------------------------------------------------ E₂
E₁ and E₂ are equal in magnitude but opposite in direction
| E₂ | = | E₁ |
Thus, since E₂ is opposite in direction to E₁, the Q = - 8 C
When light changes the medium it travels through it also changes speed. The speed in medium is given by formula:
Rearranging formual gives:
From this formula we can make conclusion that index of refraction is inversely proportional to speed of light in medium. This means that greater speed gives smaller index of refraction.
The circuit breaker will tripped. Details below
<h3>What is power? </h3>
This is defined as the rate in which energy is consumed. Electrical power is expressed mathematically as:
Power (P) = voltage (V) × current (I)
P = IV
<h3>How to determine the total power</h3>
The following data were obtained from the question:
- Power of heater = 1.50×10³ W
- Power of toaster = 750 W
- Power of grill = 1×10³W
- Total power = ?
Total power = power of heat + power of toaster + power of grill
Total power = 1.50×10³ + 750 + 1×10³
Total power = 3250 W
<h3>How to determine whether or not the circuit breaker will tripped</h3>
To determine if the circuit breaker will tripped or not, we shall determine the current used by the appliances. Detail below:
- Total power (P) = 3250 W
- Voltage (V)= 120 V
- Current (I) =?
P = IV
Divide both side by V
I = P / V
I = 3250 / 120
I = 27.08 A
Since the current used by the three appliances (i.e 27.08 A) is greater than the current the circuit breaker (i.e 25 A), can with stand,thus, the circuit breaker will tripped
Learn more about electrical power:
brainly.com/question/64224
#SPJ4
theyre found from your microwave
