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3 years ago

About how long ago did our solar system start to form?

Physics

2 answers:

pentagon [3]3 years ago

7 0

Answer:

(C)- About 5 billion years ago

Explanation:

4.6 Billion Years rounds up to 5 Billion Years

pshichka [43]3 years ago

4 0

About 5 billion years ago

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The talk test can be used to measure the __________. A. knowledge of an activity B. intensity of an activity C. length of an act

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According to CDC, if you’re doing moderate-intensity activity, you can talk but not sing during the activity.

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3 years ago

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What causes a wave to begin

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Wind or gravitational pull. A wave is made by friction between wind and the water’s surface. Waves can also be made by the sun and moon’s gravitational pull on the earth.

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3. A simple way to state Newton’s first law is:

MrRissso [65]

Explanation:

A simple way to state Newton's first law is:

For every action force, there is a reaction force which is equal in magnitude and opposite in direction.

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3 years ago

The force that pulls planets toward the Sun is called _____. nuclear fusion gravity magnetism differentiation

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Estimate the kinetic energy (in GJ) of a 98,000 metric ton aircraft carrier moving at a speed of at 32 knots. You will need to l

kiruha [24]

Answer:

K = 13.276 GJ

Explanation:

Given:

Mass of the aircraft (m) = 98,000 metric ton

Speed of the aircraft (v) = 32 knots

Kinetic energy of the aircraft (K) = ?

We know that,

1 metric ton = 1000 kg

∴ 98,000 metric ton = 98,000 × 1000 = 9.8 × 10⁷ kg

Also, 1 knot = 1 nautical mile per hour

So, 32 knots = 32 nautical miles per hour

Converting nautical miles per hour to meter per second using the following conversions, we get:

1 nautical mile = 1852 m

1 hour = 3600 s

Therefore, 1 nautical mile per hour = $\frac{1852}{3600}\ m/s$

So, 32 nautical miles per hour = $32\times \frac{1852}{3600}=16.46\ m/s$

Therefore, the mass and speed of the aircraft are:

$m=9.8\times 10^{7}\ kg\\v=16.46\ m/s$

Now, kinetic energy is given as:

$K=\frac{1}{2}mv^2$

Plug in the above values and solve for 'K'. This gives,

$K=\frac{1}{2}\times 9.8\times 10^7\times (16.46)^2\\\\K=4.9\times 270.9316\times 10^7\ J\\\\K=13.276\times 10^2\times 10^7\ J\\\\K=13.276\times 10^9\ J$

Now, we know that, 1 GJ = 10⁹ J

Therefore, the value of 'K' in terms of GJ is given as:

K = 13.276 GJ

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3 years ago