Generate Quiz 68B0045EDDF1A

An electron feels the strongest magnetic force when it enters a magnetic field perpendicular to it. The formula for this force is F = qvB, where B is the strength of the magnetic field, q is the electron’s charge, v is its velocity, and F is the magnetic force. The force is greatest at a 90-degree (perpendicular) angle between the velocity and magnetic field vectors.

The specific heat at constant pressure is denoted by CP, and the specific heat at constant volume by CV.

The work done on a gas when it is heated at a constant volume raises the system’s internal energy. When a gas is heated at constant pressure, work is done to overcome the pressure, and the system’s internal energy increases as the volume expands. Consequently, it can be concluded that Cp exceeds Cv.

Regarding an ideal gas,

Cp – Cv = R.

Therefore, it is also mathematically possible to demonstrate that Cp exceeds Cv.

The kinetic theory of gases states that

The molecules’ translational kinetic energy in n moles of gas is equal to f/2 nRT.

(where f is the ideal gas’s degrees of freedom.)

Furthermore,

We can infer from the two equations that Cv = f/2 R.

There are six degrees of freedom for a polyatomic gas.

Cv = 6/2 R, then

Assuming R = 8.314

Cv = 3 x 8.314

= 24.9 J/mol.K

Therefore, A) 24.9 J/mol.K is the molar specific heat for an ideal polyatomic gas.

Since this is numerical, there is only one right answer.

Where there is the greatest acceleration from gravity, a pendulum moves at its fastest speed. The distance from the Earth’s center affects the acceleration caused by gravity.

Karachi is a sea level coastal city. Generally speaking, g is higher at or close to sea level than it is at higher elevations. As a result, of the options provided, Karachi would have the pendulum’s fastest motion.

The speed of light is equal to the photon velocity. Although photons have no mass, their energy is E = hf = hc/λ. Planck’s constant is h = 6.626*10-34 Js in this case. The electromagnetic wave’s wavelength and photon energy are inversely correlated.

E=6.626×10−34 × 3×108​/1240×10-9 ≈ 1.00 eV.