Nope Copper is a better conductor
Answer:
2040 m or 2.04 km
Explanation:
The formula to calculate distance is D = v * t
D = Distance
v = velocity
t = time
Now plug and chug
D = 340 m/s * 6.0s = 2040 m = 2.04 km
Higher wattage means that the bulb will draw more current to it.
100W is more than 75W, so the answer is 2) 100W.
Answer: False.
Explanation: The Earth rotates once per day in direction from East to West. The rotation of the Earth daily is responsible for day and night experienced, the areas of the Earth facing the Sun experiences day time while the areas of the Earth away from the Sun in the Earth's shadow experiences night time.
While the revolution of the Earth around the gives rise to a year, as it takes 365 days for the Earth to go round the sun.
Answer:
50.0543248872 ft
Explanation:
F = Load = 20 ton = ![20\times 2000\ lb](https://tex.z-dn.net/?f=20%5Ctimes%202000%5C%20lb)
d = Diameter = 1.25 in
= Initial length = 50 ft
= Final length
A = Area = ![\dfrac{\pi}{4}d^2](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Cpi%7D%7B4%7Dd%5E2)
Y = Young's modulus = ![30\times 10^6\ psi](https://tex.z-dn.net/?f=30%5Ctimes%2010%5E6%5C%20psi)
Young's modulus is given by
![Y=\dfrac{FL}{A\Delta L}\\\Rightarrow Y=\dfrac{FL_1}{\dfrac{\pi}{4}d^2(L_2-L_1)}\\\Rightarrow L_2=\dfrac{4FL_1}{Y\pi d^2}+L_1\\\Rightarrow L_2=\dfrac{4\times 40000\times 50}{30\times 10^6\times \pi\times 1.25^2}+50\\\Rightarrow L_2=50.0543248872\ ft](https://tex.z-dn.net/?f=Y%3D%5Cdfrac%7BFL%7D%7BA%5CDelta%20L%7D%5C%5C%5CRightarrow%20Y%3D%5Cdfrac%7BFL_1%7D%7B%5Cdfrac%7B%5Cpi%7D%7B4%7Dd%5E2%28L_2-L_1%29%7D%5C%5C%5CRightarrow%20L_2%3D%5Cdfrac%7B4FL_1%7D%7BY%5Cpi%20d%5E2%7D%2BL_1%5C%5C%5CRightarrow%20L_2%3D%5Cdfrac%7B4%5Ctimes%2040000%5Ctimes%2050%7D%7B30%5Ctimes%2010%5E6%5Ctimes%20%5Cpi%5Ctimes%201.25%5E2%7D%2B50%5C%5C%5CRightarrow%20L_2%3D50.0543248872%5C%20ft)
The length during the lift is 50.0543248872 ft