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 :
.
<span>
if it was possible to triangulate all objects it would give the most accurate answer. So yes, it is the prefered method. However as this is not the case other methods are used, less accurate but more practical</span>
Answer:
The vibrations from sound waves cause our ears to send signals to our brains to create sound. The speed of sound waves will determine the sound's pitch, or how high or low something sounds. Sound waves are important because they allow us to hear important messages and emergency signals to protect ourselves.
Explanation:
I hope this helps :)
Answer:
(a) 19.25 N-m
(b) 25.67 N-m
(c) 0 N-m
Explanation:
Given:
Length of the pedal arm (L) = 0.177 m
Downward force 
= 145 N
Magnitude of torque is given by the formula:
Where, 
(a)
Given:
°
Therefore, torque is given as:
Therefore, the torque is 19.25 N-m.
(b)
Given:
°
Therefore, torque is given as:
Therefore, the torque is 25.67 N-m.
(c)
Given:
°
Therefore, torque is given as:
Therefore, the torque is 0 N-m.
Answer:
The frequency of the waves depends on the distance between wave fronts - considering a front as a maximum disturbance of the wave
(Consider the waves emitted by an organ pipe: condensation and rarefactions)
The waves themselves are a fixed distance apart -
as one moves towards the source the waves received will be closer together (higher frequency)
So if the frequency received increases, the distance between the source and the observer must be decreasing
