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Paraphin [41]
2 years ago
9

Define energy and provide examples of potential and kinetic energy

Physics
1 answer:
In-s [12.5K]2 years ago
6 0

Energy is the capacity for doing work..

Kinetic energy - Moving car

Potential energy - flowing water up the hill

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If the resultant force acting on a 2.0 kg object is equal to (3.0î + 4.0ĵ) N, what is the change in kinetic energy as the object
12345 [234]

Answer:

ΔK = 24 joules.

Explanation:

ΔK = Work done on the object

Work is equal to the dot product of force supplied and the displacement of the object.

W = F * Δs

Δs can be found by subtracting the vectors (7.0, -8.0) and (11.0, -5.0), which is written as Δs = (11.0 - 7.0, -5.0 - -8.0) which equals (4.0, 3.0).

This gives us

W = < 3, 4 > * < 4, 3 > = (3*4)+(4*3) = 24 J

3 0
1 year ago
Calculate delta g for the reaction if the partial pressures of the initial mixture are pcl5 = .0029 atm, pcl3 = .27 atm, and pcl
AnnyKZ [126]

Answer: equation for the reaction is given below

PCL2+PCL3=PCL5

Where pcl2=0.40atm,pcl3=0.27atm

Pcl5=0.0029atm

Using ∆G=-RTin(PCL5/PCl2*PCL3)

Where R=8.314J/K/mol and T=298K

∆G=-8.314*298in(0.0029/0.40*.27)

∆G=8962.6J/mol

Explanation:

7 0
3 years ago
In Astronomy List the systems of which the Earth is part of, from smallest to largest (most inclusive)?​
djverab [1.8K]

Answer:

<em>In order from largest to smallest these terms are:</em>

  1. <em>In order from largest to smallest these terms are:Universe</em>
  2. <em>In order from largest to smallest these terms are:UniverseGalaxy</em>
  3. <em>In order from largest to smallest these terms are:UniverseGalaxySolar system</em>
  4. <em>In order from largest to smallest these terms are:UniverseGalaxySolar systemStar</em>
  5. <em>In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanet</em>
  6. <em>In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanetMoon</em>
  7. <em>In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanetMoonAsteroid</em>

<em>In order from largest to smallest these terms are:UniverseGalaxySolar systemStarPlanetMoonAsteroidWe can generally say that a Moon is larger than an asteroid however some moons are quite large while others are smaller than many known asteroids. Asteroids are small rocky bodies that orbit the Sun, while moons are objects that orbit planets. Jupiter and Saturn have attracted many objects out of the asteroid belt and gathered them as moons.</em>

3 0
2 years ago
How does the earth's tilt in the summer contrast with its tilt in the winter?
34kurt
The tilt never changes but the rotation does

7 0
2 years ago
What is an example of Convection?
yKpoI14uk [10]
Boiling water. <span>heat goes from the burner into the pot which heats the water at the bottom. this hot water rises and cooler water moves down to replace it, causing a circular motion.</span>
3 0
3 years ago
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