If its just a number 2,300 is an answer 
        
             
        
        
        
Answer:

Explanation:
The heaviside function is defined as:

so we see that the Heaviside function "switches on" when , and remains switched on when
, and remains switched on when 
If we want our heaviside function to switch on when  , we need the argument to the heaviside function to be 0 when
, we need the argument to the heaviside function to be 0 when 
Thus we define a function f:

The  term inside the heaviside function makes sure to displace the function 5 units to the right.
 term inside the heaviside function makes sure to displace the function 5 units to the right. 
Now we just need to add a scale up factor of 240 V, because thats the voltage applied after the heaviside function switches on. ( when
 when  , so it becomes just a 1, which we can safely ignore.)
, so it becomes just a 1, which we can safely ignore.)
Therefore our final result is:

I have made a sketch for you, and added it as attachment.  
 
        
             
        
        
        
Answer:

Explanation:
<u>Elementary charge</u>
The elementary charge, denoted by the symbol e is the electric charge carried by a proton or, equivalently, the magnitude of a negative electric charge carried by an electron, which has charge −e.
The value of the elementary charge is a fundamental constant in physics:

If a metal sphere has an excess of +5 elementary charge, then it has a net charge of:


 
        
             
        
        
        
<h2>Answer:</h2>
<h2>Explanation:</h2>
First, let's refer to the distance formula:
 , where d is distance, v is velocity or speed and t is time.
, where d is distance, v is velocity or speed and t is time.
Now, let's find the distance covered by each individual speed that the car had:
<h3>1. Speed 1.</h3>
In order to use the formula, we need to convert minutes into hours since the speed is given in km/h.
21.1 min/60= 0.35 h.
Now, apply the distance formula.
d=(0.35h)*(86.8km/h)= 30.38 km.
<h3>2. Speed 2.</h3>
Convert minutes to hours again and do the same calculations.
10.6min/60=0.18h
d=(0.18h)*(106km/h)= 19.08 km.
<h3>3. Speed 3.</h3>
36.5min/60= 0.61h
d=(0.61h)*(30.9km/h)= 18.85 km.
<h3>4. Obtain the total distance.</h3>
The total distance must be given by the addition of all individual distances traveled by the car on each speed:
Total distance= 30.38 km + 19.08 km + 18.85 km= 68.31 km.
 
        
        
        
The force that pushes charges through a wire is called voltage. Electric
current is the movement of the electrons caused by potential difference. For example,
in a circuit, the electrons in the bulb will not move without the potential
difference or voltage. When there is voltage, electric current occurs because
there is a driving force for the electrons in the wire to move.