Answer:
1101.96 J
Explanation:
Potential energy at top = mgh = 24*10*5 = 1200J
Kinetic energy at bottom = 1/2*m*v² = 0.5*24*(2.8)²= 94.08 J
Loss of energy = 1200 J - 98.04 J
= 1101.96 J
Thermal energy due to friction =1101.96 J
The unit of power is called Watts.
1 way to calculate power is to divide Energy (in joules) by Time (in seconds)
Convert 4kJ to J by multiplying 4x1000
J = 4000
W = E/t
W = 4000J / 0.5s
W = 8000
Electro produced 8000 watts.
The equivalent resistance of the two cylindrical conductors connected in parallel is 466 ohm.
<h3>
Resistance</h3>
Resistance is a measure of the opposition to flow of electric current. It is measured in ohms.
It is given by the formula:
Given that R₂ = 469 ohm, hence:
But l₁ = 6l₂, r₁ = (1/5)r₂, hence:
![R_1=\rho \frac{l_1}{A_1}=\rho *\frac{6l_2}{[\pi (1/5)r_2]^2} =150 * \rho \frac{l_2}{[\pi r_2]^2}=30*469=70350\ ohm](https://tex.z-dn.net/?f=R_1%3D%5Crho%20%5Cfrac%7Bl_1%7D%7BA_1%7D%3D%5Crho%20%2A%5Cfrac%7B6l_2%7D%7B%5B%5Cpi%20%281%2F5%29r_2%5D%5E2%7D%20%3D150%20%2A%20%5Crho%20%5Cfrac%7Bl_2%7D%7B%5B%5Cpi%20r_2%5D%5E2%7D%3D30%2A469%3D70350%5C%20ohm)
The equivalent resistance (R) is:
The equivalent resistance of the two cylindrical conductors connected in parallel is 466 ohm.
Find out more on resistance at: brainly.com/question/17563681
Answer:
The last is proven
Explanation:
The moon landing is real and if you watch a video with Adam ruins everything then he debunks the theory
Answer:
4.5 x 10¹⁴ Hz
666.7 nm
1.8 x 10⁵ J
The color of the emitted light is red
Explanation:
E = energy of photons of light = 2.961 x 10⁻¹⁹ J
f = frequency of the photon
Energy of photons is given as
E = h f
2.961 x 10⁻¹⁹ = (6.63 x 10⁻³⁴) f
f = 4.5 x 10¹⁴ Hz
c = speed of light = 3 x 10⁸ m/s
λ = wavelength of photon
Using the equation
c = f λ
3 x 10⁸ = (4.5 x 10¹⁴) λ
λ = 0.6667 x 10⁻⁶ m
λ = 666.7 x 10⁻⁹ m
λ = 666.7 nm
n = number of photons in 1 mole = 6.023 x 10²³
U = energy of 1 mole of photons
Energy of 1 mole of photons is given as
U = n E
U = (6.023 x 10²³) (2.961 x 10⁻¹⁹)
U = 1.8 x 10⁵ J
The color of the emitted light is red
