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2 years ago

10

True or false? Magnetic reversals are recorded in the newly formed oceanic crust on BOTH sides of a mid-ocean ridge spreading ce

nter.

1 answer:

andrey2020 [161]2 years ago

4 0

answer: false is my answer for thi question

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What is the name of the british scientist credited with discovering cathode rays?

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<span> </span>J. J. <span>Thomson discovered cathode rays</span>

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3 years ago

This chart shows characteristics of three different waves all with the same wavelength of 10 m but moving at different frequenci

kap26 [50]

Answer:

the answer is B

Explanation:

wave x has the highest hertz making it the answer

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2 years ago

Standing at a crosswalk, you hear a frequency of 550 Hz from the siren of an approaching ambulance. After the ambulance passes,

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2 years ago

2) The horizontal and vertical components of the initial velocity of a football are 16 m/s and 20 m/s respectively. How long doe

ValentinkaMS [17]

Answer: 2.04 s

Explanation:

Let the initial velocity be v, Angle of projectile be

Then the horizontal component = v cos θ = 16 m/s

Vertical component of velocity = v sin θ = 20 m/s

Time taken to reach the highest point is half the time taken for total flight.

Time for total flight,

$t = \frac{2vsin \theta}{g}$

$t'=\frac{vsin \theta}{g} = \frac {20 m/s}{9.8 m/s^2} = 2.04 s$

Thus, the football takes 2.04 s to rise to the highest point of its trajectory.

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3 years ago

What is the potential energy of an object that has mass of 410 kg at a height of 12m

serious [3.7K]

PE = (weight) x (height)

   = (mass) x (gravity) x (height)

   = (410 kg) x (9.8 m/s²) x (12 m)

   = (410 x 9.8 x 12) kg-m²/s²

   = 48,210 joules (rounded)

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2 years ago