Answer:
Explanation:
As we know that initial speed of the fall of the stone is ZERO
also the acceleration due to gravity on Mars is g
so we have
now we have
now if the same is dropped for 4t seconds of time
then again we will use above equation
Answer:
8.5 Ω
Explanation:
La resistencia de un material es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.
La fórmula de la resistencia (R) viene dada por:
R = ρL/A
Donde ρ es la resistividad del material, L es la longitud del material y A es el área de la sección transversal del material.
Dado que:
L = 1 km = 1000 m, A = 2 mm² = 2 * 10⁻⁶ m², ρ (cobre) = 1.7 * 10⁻⁸ Ωm
Sustituyendo da:
R = 1,7 * 10⁻⁸ * 1000/2 * 10⁻⁶
R = 8.5 Ω
Answer:
c. the location of Earth in its orbit.
Explanation:
It is known that the earth orbits the sun once every 365 days, during this time the<u> constellations that are visible in the sky are changing</u>.
This is due to the fact that depending on the position, we have access to different parts of the celestial tomb, that is, the stars and constellations visible from earth.
This is why Orion is visible in winter but not in summer, since in summer it is in a <u>different part of the orbit</u> and with visibility towards different constellations.
the answer is c. the location of Earth in its orbit.
Transmit energy
Doesn’t transmit matter
The amount of energy lost to air friction, given the data is 37.71 J
<h3>How to obtain the initial energy</h3>
- Initial velocity (u) = 15.1 m/s
- Mass (m) = 450 g = 450 / 1000 = 0.45 Kg
- Initial Energy (E₁) = ?
E₁ = ½mu²
E₁ = ½ × 0.45 × 15.1²
E₁ = 51.3 J
<h3>How to obtain the final energy</h3>
- Final velocity (u) = 19.89 m/s
- Mass (m) = 450 g = 450 / 1000 = 0.45 Kg
- Final Energy (E₂) = ?
E₂ = ½mv²
E₂ = ½ × 0.45 × 19.89²
E₂ = 89.01 J
<h3>How to determine the energy lost</h3>
- Initial Energy (E₁) = 51.3 J
- Final Energy (E₂) = 89.01 J
- Energy lost =?
Energy lost = E₂ - E₁
Energy lost = 89.01 - 51.3
Energy lost = 37.71 J
Learn more about energy:
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