Force on a charge placed in electric field is given by
here 
magnitude of force is given by
Direction of force is opposite to electric field direction as it is a negative charge
so direction is towards EAST
A wave travels a speed of 1 meter in 1 second with a frequency of 1 Hertz, hope this helps out!
Answer:
The final energy of the system is 168 J
Explanation:
Heat energy released to the surroundings, 
Work done, W = 222 J
The initial internal energy, 
The change in internal energy is given by the formula, 
The final energy of the system is 168 J
Answer:
7.81 moles of Neon.
Explanation:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ atoms. This simply means that 1 mole of Neon also contains 6.02×10²³ atoms.
From the above illustration, we can convert 4.7×10²⁴ atoms of Neon to moles. this is illustrated below:
6.02×10²³ atoms = 1 mole
Therefore,
4.7×10²⁴ atoms = (4.7×10²⁴ × 1)/6.02×10²³
4.7×10²⁴ atoms = 7.81 moles
Therefore, 4.7×10²⁴ atoms of Neon is equivalent to 7.81 moles of Neon.
Answer:
speed = 1.24 × 10⁸m/s
frequency = 4.74 × 10¹⁴Hz
wavelength = 262nm
Explanation:
the speed of the helium-neon light in zircon is given by,
v = c / n
c = 3 × 10⁸m/s is the speed of light in vacuum (and in air)
n = 2.419 is the refractive index of diamond
v = 3 × 10⁸ / 2.419
= 1.24 × 10⁸m/s
(b) Frequency
The wavelength of the light in air is:
λ₀ = 632.8 × 10⁻⁹
The frequency of the light does not depend on the medium, so it is equal in air and in diamond. Therefore, we can calculate the frequency by using the speed of light in air and the wavelength in air:
f₀ = c / λ₀
= 3 × 10⁸ / 632.8 × 10⁻⁹
= 4.74 × 10¹⁴Hz
and the frequency of the light indiamond is the same:
f¹ = f₀ = 4.74 × 10¹⁴Hz
(c) Wavelength
To calculate the wavelength of the light in daimond, we can use the relationship between speed of light in diamond and frequency:
λ¹ = v / f¹
= 1.24 × 10⁸ / 4.74 × 10¹⁴
= 2.62 × 10⁻⁷m
= 262nm
