Ni is Nickel.
He is Helium.
Pb is Lead.
Answer:
0 degrees Fahrenheit is equal to 273.15 Kelvins.
Explanation:
basic formula °C + 273.15 = K. (°F − 32) × 5/9 = °C. (°F − 32) × 5/9 + 273.15 = K.
Given :
An object with weight 20 N was lifted to 0.5 meters.
To Find :
How high must you lift a 25 Newton book for it to have the same increase in potential energy as the given book.
Solution :
Since both have same potential energy :

Putting all given values in above equation :

Therefore, book with same potential energy is at a height of 0.4 m.
Answer:
D. Copper
Explanation:
Copper has the best electrical conductivity of any metal, except silver. A good electrical conductivity is the same as a small electrical resistance.
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Answer:
Say the object travels from to -A to +A
It will have zero velocity at both points
a) P = 2 * .19 s = .38 sec
b) f = 1 / P = 2.63 sec
c) A (amplitude) = ± A = .41 cm / 2 = 20.5 cm