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I am Lyosha [343]
3 years ago
13

When we talk about how a Ferrari obtains a top speed of 349 km/h, are we referring to average speed or instantaneous? How do you

know?
Physics
1 answer:
Viktor [21]3 years ago
4 0

Answer:

We are talking about instantaneous speed. This is because it says the Ferrari obtains a "Top speed" of 349 km/h. This means in one point of time, the Ferrari can reach 349 km/h. Hence, instantaneous speed.

Explanation:

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Energy that flows from an objective with a higher temperature to an object with a lower temperature
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That's THERMAL energy, often referred to as "heat".
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3 years ago
A 72-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.61 m,
chubhunter [2.5K]

Answer:

2849.98 J

Explanation:

From the question,

Work done by the boy = change Potential energy of the boy + change in kinetic energy of the boy

W = ΔP + ΔK..................... Equation 1

Where W = work done by the boy, ΔP = change in potential energy of the boy, ΔK = Change in kinetic energy of the boy.

But,

ΔP = mgΔh.................... Equation 2

ΔK = 1/2mΔv²................. Equation 3

Where m = mass of the boy, Δh = change in height of the boy, Δv = change in velocity of the boy.

Substitute equation 2 and 3 into equation 1

W = mgΔh+1/2mΔv²................. Equation 4

Given: m = 72 kg, Δh = 1.61 m, Δv = 8.5-1.6 = 6.9 m/s, g = 9.8 m/s²

Substitute into equation 4

W = 72(9.8)(1.61)+1/2(72)(6.9²)

W = 1136.016+1713.96

W = 2849.98 J

8 0
3 years ago
Why do we tend to attribute others' negative behaviors to dispositions over situational factors?
miskamm [114]

Answer:

Because you have a greater understanding of the mentality and conduct of individuals you care about, you are better able to understand their perspective and are more likely to recognize possible situational factors for their behavior.

4 0
2 years ago
PLEASE HELP! It’s urgent... and please show your work!!
bagirrra123 [75]

Answer:

A) 3.8 x 10

Explanation:

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3 years ago
2. Light waves of the wavelength of 650 nm and 500 nm produce interference fringes on a screen at a distance of 1m from a double
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Answer:

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ratio of the lattice = 1 : 0.71 : 0.58

Explanation:

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5 0
3 years ago
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