Answer: 271.4 s
Explanation:
We are told the top speed (maximum speed)
the car has is:
taking into account 
And the car's average acceleration
is:

Since:
(1)
Where:
is the car's final speed (top speed)
because it starts from rest
is the time it takes to reach the top speed
Finding this time:
(2)
(3)
(4)
Now we have to find the distance
the car traveled at this maximum speed with the following equation:
(5)
Isolating
:
(6)
(7)
(8)
On the other hand, we know the total distance
traveled by the car is:
Hence the remaining distance is:
(9)
(10)
So, we can calculate the time
it took to this car to travel this remaining distance
at its top speed
, with the following equation:
(11)
Isolating
:
(12)
(13)
(14)
With this time
and the value of
calculated in (4) we can finally calculate the total time
:
(15)
(16)
Answer:
No
Explanation:
Loudness describes how people perceive sound (see loudness). ... If people could hear equally well at all frequencies, the contour lines would be flat because the same measured sound intensity would be perceived to be equally loud regardless of the sound frequency. In fact, people do not hear as well at low frequencies.
Answer: The rate of energy transfer by a 5 ohms resistor when there is a current of 0.2 A in it.= 1.25 watt.
Explanation:
- The rate of energy transfer from one point to another is known as power.
- Its SI. unit is <em>Watt.</em>
Formula to compute power:
Power =
, I = cureent, R = resistance.
Given R = 5 ohm , Current = 0.5 A.
Then, power = 
Hence, the rate of energy transfer by a 5 ohms resistor when there is a current of 0.2 A in it.= 1.25 watt.