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lianna [129]
2 years ago
15

A 2000 kg car is moving at 1.5 m/s. What is its kinetic energy?*

Physics
2 answers:
Rom4ik [11]2 years ago
6 0
Its E,
K.E = 1/2mv^2
K.E = 1/2(2000)(1.5)^2
K.E = 2250 J
Dmitrij [34]2 years ago
3 0
Answer is B 3000 J hope I could help
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Two objects of masses m1 = 0.56 kg and m2 = 0.88 kg are placed on a horizontal
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Explanation:

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3 0
2 years ago
Light rays from stars bend toward smaller angles as they enter Earth's atmosphere. a. Explain why this happens using Snell's law
Grace [21]

Answer:

Following are the answer to this question:

Explanation:

In option (a):

  • The principle of Snells informs us that as light travels from the less dense medium to a denser layer, like water to air or a thinner layer of the air to the thicker ones, it bent to usual — an abstract feature that would be on the surface of all objects. Mostly, on the contrary, glow shifts from a denser with a less dense medium. This angle between both the usual and the light conditions rays is referred to as the refractive angle.  
  • Throughout in scenario, the light from its stars in the upper orbit, the surface area of both the Earth tends to increase because as light flows from the outer atmosphere towards the Earth, it defined above, to a lesser angle.

In option (b):

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8 0
3 years ago
7. What does the slope of a position-time graph represent?
allochka39001 [22]

Answer:

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7 0
3 years ago
Starting from rest, a 2-m-long pendulum swings from an angleof
Andrews [41]

Answer:

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Explanation:

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L_1 = L*cos(12.8) = 2*0.975 = 1.95 m

where L is the pendulum length

The vertical distance from the lowest point to the pivot point L_2 is the pendulum length 2m

this means the vertical distance from this initial point to the lowest point is simply:

L_3 = L_2 - L_1 = 2 - 1.95 = 0.05 m

As the pendulum travel (vertically) from the initial point to the bottom point, its potential energy is converted to kinetic energy:

E_p = E_k

mgh = mv^2/2

where m is the mass of the pendulum, g  = 10 m/s2 is the constant gravitational acceleration, h = 0.05 is the vertical it travels, v is the pendulum velocity at the bottom, which we are trying to solve for.

The m on both sides of the equation cancel out

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so D is the correct answer

5 0
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Mila [183]

Answer:

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