Answer:
0.5908 : 0.5933
Explanation:
vrms=√3RTM
where vrms is the root-mean-square of the velocity, Mm is the molar mass of the gas in kilograms per mole, R is the molar gas constant, and T is the temperature in Kelvin.
235UF6
Mm = 0.349 kg/mol
Vrms = √3(0.349) (R)(T)
238UF6
Mm = 0.352 kg/mol
Vrms = √3(0.352) (R)(T)
235UF6 : 238UF6
√3(0.349) (R)(T) : √3(0.352) (R)(T)
√0.349 : √0.352
0.5908 : 0.5933
Answer:
(a) 391 N
(b) 39.89 kg
(c) 5 m/s^2
Explanation:
Reading of scale when escalator is moving up = 591 N
Reading of scale when escalator is at rest = 391 N
Le a be the acceleration of the escalator.
(a) when the escalator is at rest, it gives the weight of person.
So, mg = 391 N
Thus, the weight of person is 391 N.
(b) Weight = m g
m = Weight / g = 391 / 9.8 = 39.89 kg
Thus, the mass of the person is 39.89 kg.
(c) As it is moving up, by using the Newton's second law
R - mg = m a
591 - 391 = 39.89 a
a = 5 m/s^2
Thus, the acceleration of the elevator is 5 m/s^2.
Answer:
Explanation:
What is the volume of a right cylinder with a circumference of 25π in and a height of 41.3 in? Explanation: The formula for the volume of a right cylinder is: V = A * h, where A is the area of the base, or πr2. Therefore, the total formula for the volume of the cylinder is: V = πr2h.
Answer:
The acceleration of the crate is 1 m/s²
Explanation:
It is given that,
Mass of the crate, m = 5 kg
Two forces applied on the crate i.e. one is 3.0 N to the north and the other is 4.0 N to the east. So, there resultant force is :
We need to find the acceleration of the crate. It is given by using the second law of motion as :
a = 1 m/s²
So, the acceleration of the crate is 1 m/s². Hence, this is the required solution.
Most likly b. Hope It helped:)