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3 years ago

What are fossil fuels composed of? 1.Carbon 2.Nitrogen 3.Oxygen

Physics

2 answers:

Dovator [93]3 years ago

6 0

Answer: Carbon

Explanation:

Monica [59]3 years ago

5 0

Answer:

fossil fuels are composed of Carbon.

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but the initial kinetic energy of the two balls is

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But the kinetic energy of one ball with twice the speed would be

KE = 1/2 m (2 v)^2 = 2 m v^2 thus violating conservation of energy

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Hernando builds a simple DC series circuit with a standard D-cell battery and uses an ammeter to determine that the total curren

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Answer: I = 9.0 A

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The constant of proportionality is Resistance, whose unit is ohm (Ω).

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$I=\frac{V}{R}$

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The new current, when driven by 3 batteries is 9.0 A.

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It would be refraction

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Which example possesses mechanical potential energy?. A. a taut guitar string. B. an oscillating pendulum. C. a roller coaster r

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In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. A r

IrinaK [193]

Answer:

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Explanation:

Draw a free body diagram on the rider. There are three forces: tension force 15° below the horizontal, drag force 30° above the horizontal, and weight downwards.

The rider is moving at constant speed, so acceleration is 0.

Sum of the forces in the x direction:

∑F = ma

F cos 30° - T cos 15° = 0

F = T cos 15° / cos 30°

Sum of the forces in the y direction:

∑F = ma

F sin 30° - W - T sin 15° = 0

W = F sin 30° - T sin 15°

Substituting:

W = (T cos 15° / cos 30°) sin 30° - T sin 15°

W = T cos 15° tan 30° - T sin 15°

W = T (cos 15° tan 30° - sin 15°)

Given T = 1900 N:

W = 1900 (cos 15° tan 30° - sin 15°)

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The rider weighs 570 N (which is about the same as 130 lb).

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3 years ago