Answer:
An element's mass number (A) is the sum of the number of protons and the number of neutrons. ... Protons and neutrons both weigh about one atomic mass unit or amu. Isotopes of the same element will have the same atomic number but different mass numbers.
Explanation:
1 Is correct because James is going faster.
2 is correct because a faster speed on a position vs time graph will have a steeper slope
3 is correct as well.
The answer is 4 all of the above
Scalar quantity are physical quantities that have just magnitude, not direction.
- It is always positive.
- Examples: Speed, distance
Answer:
The velocity at the nozzle at inlet = 3584
Explanation:
Pressure at inlet = 1 × Pa
Temperature at inlet = 518 ° c = 791 K
Mass flow rate = = 88.7
Gas constant for carbon die oxide is R = 189
Mass flow rate inside the nozzle is given by the formula = × ×
⇒ = = 1 × Pa
⇒ R = 791 × 189 = 149499
⇒ = 0.0037
Put all the above values in above formula we get,
⇒ 88.7 = × 0.0037 ×
⇒ = 3584
This is the velocity at the nozzle at inlet.
Answer:
A different answer to this is AI
Explanation: