Calculating the average speed is straightforward by using the formula involving distance and time:
average speed = distance / time
Thus, we have:
average speed = 4875 ft / 6.85 minutes
<span>average speed = 711.68 ft / min</span>
<span>The work done corresponds to the potential energy that the person acquires while ascending the stairs.
work = potential energy acquired = mgh
W = 75kg * 9.8m/s² * 2.50m = 1837.5 J</span>
Answer: yes.
Explanation: The type of light striking the metal is visible light.
There are three factors involved:
1. The temperature
2. The specific heat of the metal
3. The thermal conductivity of the metal.
The increase in temperature of the metal is influenced by how light energy is absorbed and reflected; it will absorb some of the energy and won't reflect all of it.
When an object absorbs visible light, it transforms the short wavelength light into longer wavelength heat, leading to a temperature rise.
Speed is defined as distance over time. Hence, to determine the distance, we use d = V * t. Plugging in the values yields d = (72 Km / h) * (1h / 3600s) * (4.0 s) = 0.08Km. Thus, during this distracted period, a distance of 0.08Km was covered.
Answer:
(1.6 × 10¹⁸) /s
Explanation:
The current in a wire is calculated using the formula:
I = (Q/t)
where Q represents the total charge of the electrons in the wire
and t denotes time.
Moreover, Q can be expressed as nq
where n is the number of electrons present in the wire
and q is the charge of a single electron, 1.602 × 10⁻¹⁹ C.
This leads us to the equation I = nq/t.
Thus, (n/t) = (I/q) describes the number of electrons flowing per second through a cross-section.
Inserting our current, I = 260 mA or 0.26 A, along with q = 1.6 × 10⁻¹⁹ C, yields:
(n/t) = (0.26/(1.602×10⁻¹⁹)) = (1.62 × 10¹⁸) /s = (1.60 × 10¹⁸) /s
