The particles in diagram 3 move fast enough to break away from each other.
We can obtain the answer easily if we assume the gas here is an ideal gas. We can use t he expression:
PV = nRT
we set nR/V = k
P/T = k
P1/T1 = P2/T2
when P2 = 3P1
P1/10 = 3P1/T2
T2 = 30 degrees Celsius
The answer is 4! Hope this helps
Answer:
F = 1.6*10⁴ N
Explanation:
Given distance x = 0.15m, mass m = 1200kg, velocity v = 2m/s.
Unknown: force F
Force is given by Newton's law:
(1)
The average force to stop an object from a velocity will be the same force necessary to accelerate an object from rest to the same velocity.
The distance for an object starting from rest for a constant acceleration is given by:
(2)
The velocity for an object starting from rest for a constant acceleration:
(3)
Using equation 2 and 3 to eliminate time t:
(4)
Solving equation 4 for the acceleration a:
(5)
Using equation1 to solve for the force F:
(6)
Answer:
An electron in the third shell has more energy than an electron in the second shell and An electron in the first shell has more energy than an electron in the second shell.
Explanation:
- Calcium has 20 electrons.
- Calcium does not "borrow" electrons. Calcium "donates" 2 electrons.
- Calcium ion (Ca2+) has 18 electron
- Calcium has 2 valence electrons.
- The element Ca, so calcium, has 20 electrons (so it also has 20 protons) this means that it has 2 electrons in its outer orbit, its relative atomic mass is 40.