273 - 34 = 239.
So the answer is 239
the reason why sound travels faster in solid is because the molecules in solid is more close to each other and they allow the waves of the sound to travel quickly or easily. and same reason why the sound travels fast in liquid that gas, it's because the molecules in liquid is closer to each other than the molecules in gas but they're not as close as solid hence why solid is the fastest at traveling sound
Answer:
P₂ = 206945 Pa
Explanation:
given,
gauge pressure = 3.8 atm
1 atm = 101325 Pa
speed of flow,v₁ = 0.62 m/s
diameter of pipe,d₁ = 5.3 cm
diameter of pipe after tapering, d₂ = 3 cm
height above the ground = 18 m
Using equation of continuity
A₁v₁ = A₂ v₂
v₂ = 1.94 m/s
using Bernoulli's equation
P₂ = 206945 Pa
hence, pressure of the pipe at top floor is equal to P₂ = 206945 Pa
No. It’s moving at a constant speed (speed is not changing) in a straight line (same direction so velocity is not changing) so it is not accelerating. Acceleration only occurs if there’s a change in speed/velocity.
Answer: A reference point
Explanation: If an object is in motion then its distance from another object is changing. Whether an object is moving or not depends on your point of view. For example, a woman riding on a bus is not moving in relation to the seat she is sitting on, but she is moving in relation to the buildings the bus passes. A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. You assume that the reference point is stationary, or not moving.
