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stepladder [879]
3 years ago
13

Which is a consequence of the third law of thermodynamics Energy is not always conserved. Engines cannot discharge waste heat. H

eat engines are less than 100 percent efficient. Engines produce more waste heat than work.
Physics
2 answers:
miss Akunina [59]3 years ago
8 0
Heat engines are less than 100% efficient because absolute zero cannot be reached
Fynjy0 [20]3 years ago
4 0
Heat engines are less than 100 percent efficient because theoretically energy is going to finds another way to be released like sound and pressure release etc.

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If a pedestrian walked 900 meters forward and 300 meters back
serious [3.7K]

Answer:

B

Explanation:

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3 years ago
A golf ball reaches a height of 150 m before it stops rising and starts to fall to the ground. What is the golf balls speed (rou
artcher [175]

Answer:

v = 54 m/s

Explanation:

Given,

The maximum height of the flight of golf ball, h = 150 m

The velocity at height h, u = 0

The velocity of the golf ball right before it hits the ground, v = ?

Using the III equations of motion

                               <em>  v² = u² + 2gh</em>

Substituting the given values in the above equation,

                                 v² = 0 + 2 x 9.8 x 150 m

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Hence, the speed of the golf ball right before it hits the ground, v = 54 m/s

4 0
3 years ago
A stiff wire 32.5 cm long is bent at a right angle in the middle. One section lies along the z axis and the other is along the l
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Answer: i personally think it would be 789

Explanation:

Hopefully I am right

4 0
3 years ago
The diagram below represents the rock cycle.
lara31 [8.8K]

Answer:

C. Heat and Pressure

Explanation:

The arrow which is labeled A points from igneous rock to metamorphic rock.

There are three types of Rocks:

1. Igneous Rock

2. Metamorphic Rock

3. Sedimentary Rock

Rock cycle:

Rock cycle is the process that describes the transition between these three types of rocks. Each type has its own form and its own equilibrium condition. The rock type alters when it is pushed out of its equilibrium conditions.

Transition of Igneous rock to Metamorphic rock:

Igneous rock forms when magma cools down. The transition of Igneous Rock to Metamorphic Rock is a result of a process called Metamorphism. Metamorphism is the alteration in the structure of rock as a result of certain heat and pressure conditions. Inside Earth heat comes from pressure. Heat with pressure does not melt the rock but it bakes the rock. Baking is not melting but it changes the shape of the rock while it is still solid. It actually forms crystals. Because the rock changes its structure, it is called Metamorphic Rock.

5 0
3 years ago
Read 2 more answers
Light traveling through a fluid (n = 1.273) strikes a crystal. If the angle of incidence is
pantera1 [17]

Answer:

n = 1.523

Explanation:

Snell's law

1.273sin32.89 = nsin26.99

6 0
3 years ago
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