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m_a_m_a [10]
2 years ago
8

A hydraulic lift raises 1140 kg car through a height of 2.4 m. What is the potential energy

Physics
1 answer:
Sladkaya [172]2 years ago
5 0
1140x9.8x2.4= 26,812.8 significant figures Make it 27,000
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Which of the following values represents an index of refraction of an actual material?
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The answer is <em>B. 5/4</em> or <em>1.25</em>

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Please help me with Part B &amp; help me correct the rest of the questions
AleksAgata [21]

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Magnetic activity and sunspots are in a proportional relationship.

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Other than that, all of your other answers seem correct.

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3 years ago
Review. A light spring of force constant 3.85 N/m is compressed by 8.00 cm and held between a 0.250-kg block on the left and a 0
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The spring exerts on each block an outward force of magnitude

$$\left|\mathrm{F}_{\mathrm{s}}\right|=\mathrm{kx}=(3.85 \mathrm{~N} / \mathrm{m})(0.08 \mathrm{~m})=0.308 \mathrm{~N}$$

$$Take the $+\mathrm{x}$ direction to the right. For the light block on the left, the vertical forces are given by$$

$$\mathrm{F}_{\mathrm{g}}=\mathrm{mg}=(0.250 \mathrm{~kg})\left(9.80 \mathrm{~m} / \mathrm{s}^2\right)=2.45 \mathrm{~N}$$ \\and \ $\sum \mathrm{F}_{\mathrm{y}}=0$so $\mathrm{n}-2.45 \mathrm{~N}=0 \rightarrow \mathrm{n}=2.45 \mathrm{~N}$ \\Similarly, for the heavier block,$$

$$\mathrm{n}=\mathrm{F}_{\mathrm{g}}=(0.500 \mathrm{~kg})\left(9.80 \mathrm{~m} / \mathrm{s}^2\right)=4.90 \mathrm{~N}$$

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<h3>What is kinetic energy?</h3>

The kinetic energy  is the energy that it possesses due to its motion.

To accelerate an object, we need to apply force. To apply force, we have to be compelled to do work. When work is done on an object, energy is exchanged, and the object moves with a unused steady speed. We call the energy that's exchanged kinetic energy, and it depends on the mass and speed accomplished.

Kinetic energy is a scalar quantity, it is entirely described by magnitude

To learn more about kinetic energy , visit:

brainly.com/question/11592500

#SPJ4

7 0
2 years ago
Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a const
vesna_86 [32]

Answer:

84π m²/s or 263.76 m²/s

Explanation:

see the attached file

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3 years ago
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