Answer:
42 minutes
Explanation:
First, let us find out the time required by the roommate, who is driving the truck, to reach the city.
We know that,

Now, you are planning to rest a bit after traveling for an hour. So,
distance covered in that 1 hour = 
time required by you to cover the total distance = 
If you wish reach at the destination half an hour (0.5 h) before your roommate, you can expend a total of
throughout your journey.
Hence, you can rest for 
Explanation:
thet amplify DC, because of the voltage ( small current input signal)
Answer:
may be 5 m is the answer of this question
Answer: I have no idea either i need help aswell
Explanation:
Answer:
If the end of the tube is uncovered such that the air at the end of the tube can freely vibrate when the sound wave reaches it, then the end is referred to as an open end. If both ends of the tube are uncovered or open, the musical instrument is said to contain an open-end air column.
Explanation: hope this helps:)