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lianna [129]
3 years ago
15

According to the first law of thermodynamics, the total amount of energy in the universe __________.

Physics
1 answer:
lubasha [3.4K]3 years ago
6 0

Answer:

is constant

Explanation:

Energy cannot be destroyed or created, but can transfer from places to places and in different forms.

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Which action is an example of poor sportsmanship
Leokris [45]
Yelling rude comments to the winning team or claiming the winning team cheated is one example. Another example could be something like crying about loosing and throwing a hissy fit over not winning 
6 0
3 years ago
An artillery shell is fired at an angle to the horizontal. Its initial velocity has a vertical component of 150 meters per secon
Nana76 [90]

Answer:

300.16m/s

Explanation:

An artillery shell is fired at an angle to the horizontal. Its initial velocity has a vertical component of 150 meters per second and a horizontal component of 260 meters per second. What is the magnitude of the initial velocity of the shell?

note velocity is the change in displacement to time

to find the magnitude of the initial speed ,

we will find the square of the vertical component plus the square of the horizontal component. then we look for the square root

U=\sqrt{Ux^2+Uy^2}

U=\sqrt{260^2+150^2}

U=90,100^2

U=300.16m/s

means that it covers 300.16m in 1 seconds

5 0
3 years ago
A moving object must have which type of energy
xxMikexx [17]

Answer:

Kinetic Energy

Explanation:

Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. ... Kinetic energy can be transferred between objects and transformed into other kinds of energy. For example, a flying squirrel might collide with a stationary chipmunk.

7 0
4 years ago
What is the velocity of a 2000 kg truck with a momentum of 48,000 kg•m/s?
Goshia [24]

Answer:

24

Explanation:

momentum= mass* velocity

velocity= momentum/ mass

5 0
3 years ago
Fill in a T/F answer for each statement below. If false, correct the statement to make it true.:
grandymaker [24]

Answer:

Explanation:

Let's answer these statements

.1) True. This is the law of reflection.

.2) False. The speed of light depends on the index of refraction n = c / v

           v = c / n

.3) True. The frequency creates a forced oscillation, whereby the atoms re-emit at the same incident frequency

.4) False. The index of refraction is a measure of the ratio of the speed of light in a vacuum and the material environment, the ability to change the trajectory is given by the law of refraction

.5) True. True due to the change in beam trajectory due to the law of refraction

.6 False. The phenomenon occurs when you pass from a medium with a higher index to one with a lower ratio, because the refracted beam separates from the normal

.7) True.

.8) False so that the lightning approach is valid Lam >> d,

.9) True.

3 0
3 years ago
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