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wolverine [178]
3 years ago
9

You are walking toward the back of a train that is moving forward with a constant velocity. The train's velocity relative to the

ground is 30 m/s forward. Your velocity relative to the train is 1.5 m/s backward. How fast are you moving relative to the ground?
Physics
1 answer:
yawa3891 [41]3 years ago
7 0

Answer:

28.5 m/s

Explanation:

There are 2 different velocities: the train velocity and yours velocity. They're in opposite directions, so one is positive and other is negative. Take the forward direction as the positive:

V = +30 -1.5

V = 28.5 m/s

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What was the basic shortcoming of the Greek philosophers approach to studying the material world?
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A small metal cube measures 2.5 cm on one side. The mass of the cube is 1129.56 g. What is the density of the cube?
attashe74 [19]

-- volume = (length)(width)(height)

-- Since the cube is a cube, its three dimensions are all the same number.

Volume = (2.5cm)(2.5cm)(2.5cm)

Volume = 15.625 cubic cm

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Density = (1129.56g) / (15.625cm^3)

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3 years ago
Work done in taking charge from one point of a conductor to is another point is called ​
Yuliya22 [10]

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Explanation:

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I think so

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You find yourself in a place that is unimaginably hot and dense. A rapidly changing gravitational field randomly warps space and
Marta_Voda [28]

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<h3>What is Planck time?</h3>

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To learn more about Plank time:

brainly.com/question/23791066

#SPJ4

8 0
2 years ago
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maks197457 [2]

Answer:

m = 0.51[kg]

Explanation:

Potential energy is defined as the product of mass by gravity by height.

E_{pot}=m*g*h

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