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mash [69]
2 years ago
8

You use a rope 2.00 m long to swing a 10 kg weight around your head. The tension in the rope is 20 N. In half a revolution how m

uch work in J is done by the rope on the weight
Physics
1 answer:
satela [25.4K]2 years ago
8 0

Answer:

No work is done on the weight. :3

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Give a calculate answer to show that the two values (English system and metric system) for the Planck Constant are equivalent.
Nataly_w [17]

Answer:

Given values of Planck Constant are equivalent in English system and metric system.

Explanation:

Value of Planck's constant is given in English system as 4.14 x 10⁻¹⁵eV s.

Converting this in to metric system .

We have 1 eV = 1.6 x 10⁻¹⁹ J

Converting

     4.14 x 10⁻¹⁵eV s = 4.14 x 10⁻¹⁵x 1.6 x 10⁻¹⁹ = 6.63 x 10⁻³⁴ Joule s

So Given values of Planck Constant are equivalent in English system and metric system.

7 0
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Which object has more thermal energy a bowl of soup or pot of soup
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How does the phrase studying grammar function in sentence 4? A) main verb B) direct object C) subject complement D) subject of t
lisabon 2012 [21]

Answer: (b) direct object

Explanation:

6 0
3 years ago
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According to Newtons second law of motion, which is equal to the acceleration of an object?A: net force + massB: net force x mas
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D: net force divides mass

Application of F = ma.

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Sindrei [870]
The mass of ball a is twice the mass of ball b:
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U_a = 2 U_b
When the two balls reach the ground, the potential energy of each ball has converted into kinetic energy (since now their altitude is h=0), because the total mechanical energy of each ball must be  conserved. Therefore:
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K_b = U_b
and so the kinetic energy of ball a must be twice the kinetic energy of ball b:
K_a = 2 K_b
8 0
3 years ago
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