Answer:
Statement 1 and statement 2 are correct and statement 2 is the correct explanation of statement 1
Explanation:
Both the velocity and kinetic energy of a gas molecule depends on its relative molecular mass according to Graham's law of diffusion in gases. Hence, the greater the relative molecular mass of the gas, the lesser its average velocity and kinetic energy.
Hence we can see that statement 2 vividly explains the postulation of statement 1 and makes the points more easily comprehensible.
Answer:
average speed and velocity are 0.5m/s (squared)
Complete Question
An electron is accelerated by a 5.9 kV potential difference. das (sd38882) – Homework #9 – yu – (44120) 3 The charge on an electron is 1.60218 × 10−19 C and its mass is 9.10939 × 10−31 kg. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.4 cm?
Answer:
The magnetic field strength is 
Explanation:
The work done by the potential difference on the electron is related to the kinetic energy of the electron by this mathematical expression
Making v the subject
![v = \sqrt{[\frac{2 \Delta V * q }{m}] }](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B%5B%5Cfrac%7B2%20%5CDelta%20V%20%2A%20q%20%7D%7Bm%7D%5D%20%7D)
Where m is the mass of electron
v is the velocity of electron
q charge on electron
is the potential difference
Substituting values
![v = \sqrt{\frac{2 * 5.9 *10^3 * 1.60218*10^{-19} }{9.10939 *10^{-31]} }](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B%5Cfrac%7B2%20%2A%205.9%20%2A10%5E3%20%2A%201.60218%2A10%5E%7B-19%7D%20%7D%7B9.10939%20%2A10%5E%7B-31%5D%7D%20%7D)
f
For the electron to move in a circular path the magnetic force[
] must be equal to the centripetal force[
] and this is mathematically represented as
making B the subject
r is the radius with a value = 5.4cm = 
Substituting values
Answer:
A. "The electric force vector is along the direction of the electric field, whereas the magnetic force vector is perpendicular to the magnetic field."
D. "The kinetic energy of a charged particle moving in an electric field is not altered, whereas the kinetic energy of a charged particle moving in a magnetic field is either increased or decreased, depending on the direction of motion."
Explanation:
Electric fields originate from voltage differences, the higher the voltage, the stronger the resulting field. Magnetic fields originate from electric currents, a stronger current results in a stronger field. An electric field exists even if there is no current. When there is current, the magnitude of the magnetic field will change with power consumption, but the strength of the electric field will remain the same.
The second circuit with 4.5 A current has more resistance.
Explanation:
potential difference= 6 V
resistance of first circuit=0.80 Ω
for second circuit, current= i=4.5 A
using Ohm's law V= i R
6=4.5 R
R=1.33 Ω
So the second circuit has a greater resistance.
