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Alexus [3.1K]
3 years ago
7

Match each term to its definition.

Physics
2 answers:
den301095 [7]3 years ago
8 0
Answer: first one is electrochemical
Second one is combustion
Third one is photosynthesis
Fourth one is respiration
Taya2010 [7]3 years ago
7 0
Answers are in this order:
Electrochemical
Combustion
Photosynthesis
Respiration
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A rocket is launched from a height of 3 m with an initial velocity of 15 m/s What is the maximum height of the rocket? When will
Fudgin [204]

If no extra acceleration is added to the rocket, then its velocity at time <em>t</em> is

<em>v</em> = 15 m/s - <em>g t</em>

where <em>g</em> = 9.80 m/s² is the magnitude of the acceleration due to gravity.

Also, recall that

<em>v</em>² - <em>u</em>² = 2 <em>a </em>∆<em>x</em>

where <em>u</em> is initial speed, <em>v</em> is final speed, <em>a</em> is acceleration, and ∆<em>x</em> is net displacement.

At the rocket's maximum height ∆<em>x</em>, the velocity is 0. So, the maximum height is

0² - (15 m/s)² = 2 (-<em>g</em>) ∆<em>x</em>

∆<em>x</em> = (15 m/s)² / (2 * (9.80 m/s²)) ≈ 11.48 m

But this assumes the rocket is launched from the ground. We're given that the rocket is launced from 3 m above the ground, so we need to add this to the height above. So the maximum height is closer to 14.48 m.

As mentioned before, this happens when vertical velocity is 0:

0 = 15 m/s - <em>g t</em>

<em>t</em> = (15 m/s) / (9.80 m/s²) ≈ 1.53 s

5 0
3 years ago
Explain why the mechanical advantage of a single fixed probably is always one
seropon [69]
Ideal mechanical advantage doesn't take energy lost to friction into account. Explain why the mechanical advantage of a single fixed pulley is always 1. A single fixed pulley changes only the direction of the effort force. ... Energy transforms from the object supplying the force to the object being moved.
4 0
3 years ago
A 0.242 g sample of potassium is heated in oxygen. The result is 0.292 g of a crystalline compound. What is the formula of this
masha68 [24]

Answer:

Hello there Dude answer is B :D hope it helped mark me brainliest.

8 0
3 years ago
An 877 kg drag race car accelerates from rest to 116 km/h in 0.951 s. What change in momentum does the force produce? Answer in
Eduardwww [97]

Answer:

The change in momentum is 28265.71  kg-m/s.

Explanation:

Given that,

Mass of a car, m = 877 kg

Initial velocity of the car, u = 0 (at rest)

Final velocity of the car, v = 116 km/h = 32.23 m/s

Time, t = 0.951 s

We need to find the change in momentum produced by the force. It can be calculated as the difference of final momentum and the initial momentum.

\Delta P=m(v-u)\\\\=877\times (32.23-0)\\\\=28265.71\ kg-m/s

So, the change in momentum is 28265.71  kg-m/s.

7 0
3 years ago
What is one way to model gravity and magnetism
Oxana [17]

Answer:

Gravity and magnetism are not the same thing. In fact, they are completely separate forces. Gravity is a force that acts between any two objects with mass. ... Magnetism can either pull the two objects together or push them apart, depending on which way the magnets point.

Explanation:

6 0
3 years ago
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