Answer: what a kind person :]
Explanation:
Answer:
Yes
Explanation:
You just need to add a period behind the word "lesson", and make it My brother john has never learned this lesson.
Answer:
The rise in temperature of helium gas is 14.25 K.
Explanation:
Given that
H= 4.5 km
The box is insulated ,at 4.5 km height helium gas have potential energy and when it come down then this potential energy will convert into the internal energy of helium gas.
So by heat balance
![mgh=mC_v\Delta T](https://tex.z-dn.net/?f=mgh%3DmC_v%5CDelta%20T)
![gh=C_v\Delta T](https://tex.z-dn.net/?f=gh%3DC_v%5CDelta%20T)
for helium gas
Now by putting the values
![gh=C_v\Delta T](https://tex.z-dn.net/?f=gh%3DC_v%5CDelta%20T)
10 x 4.5 =3.15 x ΔT
ΔT=14.25 K
So the rise in temperature of helium gas is 14.25 K.
Answer:
B) I took the quiz and got it 100% right on the question!!!
Explanation:
Answer:
Explanation:
Given Preception time = 1.0 sec
Deceleration rate = 11 ft /sec2
Interpretation rate as = 3words /sec
The board consists of “WORK ZONE: 20 MPH SPEED ZONE”
Then Interpretation time = 2.0 sec
Decision time = 0.5 sec
Assume that the vehicle was traveling with 65mph
Perception Time
So, if you’re driving at 65 mph, your vehicle will travel 71 feet before you realize you need to start braking.
Reaction Distance
At 65 mph, that’s another 71 feet traveled.
Braking Distance
At 65 mph, it takes an additional 5.5 seconds or about 525 feet of actual brake application to stop your vehicle.
Stopping Distance
To determine the stopping distance, you calculate: Perception Distance (71 feet) + Reaction Distance (71 feet) + Braking Distance (525 feet) = Stopping Distance (667 feet)
Then to reduce the speed it takes 7.0 secs