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3 years ago

Reading from left to right, describe the spacing between the dots in lines 1, 2, and 3.

Physics

1 answer:

Ierofanga [76]3 years ago

5 0

Answer:

Line 1: the spacing is even the whole time

Line 2: the spacing increases over time

Line 3: the spacing decreases over time

hope this helps!

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Define force in your own words.

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Answer:

an influence that is able to change the motion of a body or create motion or stress in a stationary body. The magnitude of an influence is often calculated by multiplying the mass of the body by its acceleration.

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2 years ago

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How does the yarn in the sweater differ from the wool on the sheep

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The yarn might be soft and dyed because it has been treated. The wool might be scratchy, itchy (sorry if those are the same), white*, brown*, or gray*, and possibly warmer because it is thicker.

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3 years ago

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A Dodge Stealth is driving at 70 mph on a highway. It passes a BMW going the same direction. The BMW is moving 7 mph backward re

Tasya [4]

A Dodge Stealth is driving at 70 mph on a highway. It passes a BMW going the same direction. The BMW is moving 7 mph backward relative the Dodge. 63 mph is the velocity of the BMW

Answer: Option A

<u>Explanation:</u>

Given is the speed of the dodge stealth as 70 mph passing by the BMW moving with 7 mph relative to Dodge. Thereby, to calculate the velocity of BMW, relative velocity concept has to be employed.

As we know that the relative velocity tells us about relative velocity of mobile reference system as the difference or sum of the initial reference system.

Therefore,

velocity of the BMW = $v_{b}$

Velocity of the dodge = $v_{d}$

Velocity of the BMW with respect to dodge = $V_{b d}$

As per the formula,

$v_{b d}=v_{b}-v_{d}$

$v_{b} = v_{d} + v_{b d} = 70 + (-7) = 70 - 7 = 63 \mathrm{mph}$

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2 years ago

An old clock has a spring that must be wound to make the clock hands move. Which statement describes the energy of the spring an

topjm [15]

Answer:

Explanation:

neither the spring or hands are in the action of movemnet

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2 years ago

A concave mirror has a radius of curvature of 1.6m. Find the focal length

Yuki888 [10]

Given,

Radius of curvature of concave mirror = 1.6m

We know that ,

Focal length = radius/2

Hence ,

Focal length of concave mirror = radius of concave mirror /2

=> F = 1.6/2

=> F = 0.8m

Hence the focal length of concave mirror is 0.8 m

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2 years ago

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