Answer:
R₈₀ = 146.43 Ω
Explanation:
The resistance of a resistor depends upon many factors. One of the main factors of the change in resistance of a resistor is the change in temperature. The formula for the resistance at a temperature other than 20°C is given as follows:
R₈₀ = R₀(1 + αΔT)
where,
R₈₀ = Resistance of wire at 80°C = ?
R₀ = Resistance of wire at 20° C = 104 Ω
α = Temperature coefficient of resistance for copper = 0.0068 °C⁻¹
ΔT = T₂ - T₁ = 80°C - 20°C = 60°C
Therefore,
R₈₀ = (104 Ω)[1 + (0.0068°C⁻¹)(60°C)]
<u>R₈₀ = 146.43 Ω</u>
Answer:
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Explanation:
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Magnitude is the word used to describe the amount of energy released by an earthquake.
Hope I helped! :D
I love this one. All the effects of gravity are vertical. There is no horizontal force on the crate, and we are neglecting air resistance, so the horizontal speed of the crate doesn't change. When it gets to the ground, its horizontal speed is still 100 meters per second.
Answer:
Given:
Initial speed (u) = 0 km/hr = 0 m/s
Final speed (v) = 36 km/hr
Time taken (t) = 10 sec
To Find:
Acceleration (a) of the train
Explanation:
So,
Final speed (v) = 10 m/s
Acceleration of train = 1 m/s²