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goldenfox [79]
3 years ago
13

An object with a mass of 70 kilograms is supported at a height of 8 meters above the ground, what's the potential energy of the

object with respect to the ground?
Physics
1 answer:
Olegator [25]3 years ago
6 0

Answer:

5488 Joules

Explanation:

Use the formula for the potential energy:

E_p = mgh = 70kg\cdot 9.8\frac{m}{s^2}\cdot 8m = 5488 J

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One person is in a pool and is diving to a depth of 2.3m, and another person is diving to a depth of 3m. What pressure does each
Vlad [161]

Explanation:

The static pressure is P = ρgh, where ρ is the density of the fluid and h is the depth.

For the first person:

P = (1000 kg/m³) (9.8 m/s²) (2.3 m)

P = 22,500 Pa

For the second person:

P = (1000 kg/m³) (9.8 m/s²) (3 m)

P = 29,400 Pa

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What is the energy of a photon of light with a wavelength of 3.10 × 10−7 m?
elena-s [515]
E = hf = hc/λ
= (6.6 x 10^-34) × (3 × 10^8) ÷ (3.1 × 10^-7)
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A 2 column table with 2 rows. The first column is labeled material with entries gold, iron. The second column is labeled specifi
topjm [15]

Iron atoms are heavier than gold atoms

Explanation:

Chart:

 Materials            Specific heat

  Gold                       0.129

  Iron                          0.45

The specific heat of a substance is the amount of heat required to raise the temperature of 1g of the substance by 1K.

We can see that the more the mass of a substance, the higher the specific heat needed to raise the temperature.

Specific heat is directly proportional to the mass of substance.

It also dependent on the amount of heat supplied and the nature of the substance.

  • The mass of a body is the amount of substance it contains.
  • A heavier substance has more number of atoms in it.
  • Since iron has a higher specific it, the atoms must be heavier or more than that of gold.

learn more:

Specific heat brainly.com/question/7210400

#learnwithBrainly

8 0
3 years ago
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Answer:

Electrostatics is a branch of physics that studies electric charges at rest. Since classical physics, it has been known that some materials, such as amber, attract lightweight particles after rubbing. The Greek word for amber, or electron, was thus the source of the word 'electricity'.

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Which statement about thermal energy (or heat energy) is most accurate?
Aneli [31]

It increases with the motion of particles within a substance

I just took the test

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3 years ago
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