Answer:
Minimum required frequency is υmin = 654.9 x 10¹² Hz
Explanation:
The energy of a photon is given by the equation:
E = hυ
where,
E = energy of photon
h = Plank's Constant = 6.626 x 10⁻³⁴ J.s
υ = frequency
The minimum energy of photon, must be equal to the work function of Calcium.
Emin = ∅₀ = h(υmin)
υmin = ∅₀/h
where,
υmin = minimum frequency
∅₀ = work function = 4.34 x 10⁻¹⁹ J
Therefore,
υmin = 4.34 x 10⁻¹⁹ J/6.625 x 10⁻³⁴ J.s
<u>υmin = 654.9 x 10¹² Hz</u>
Answer- I would think low
Low pressure has a bit less of a function than high pressure, high pressure is more useful in certain terms
<span> <span> The answer to your question is: increase the force applied to the object.
Two items are provided as a basis for that conclusion:
1. According to Newton's Second Law of Motion, the formula for finding force is: F = ma
where F is the force,
m is the mass of an object,
and a is the acceleration of the object.
And 2: work = force x distance or W = F x d.</span></span>
