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2 years ago

9

Rank the five terrestrial worlds in order of size from smallest to largest: Group of answer choices Mercury, Venus, Earth, Moon,

Mars. Mercury, Moon, Venus, Earth, Mars. Moon, Mercury, Venus, Earth, Mars. Moon, Mercury, Mars, Venus, Earth. Mercury, Moon, Mars, Earth, Venus.

1 answer:

dimaraw [331]2 years ago

7 0

Answer: Moon, Mercury, Mars, Venus, Earth

Explanation:

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tatuchka [14]

Unless if all forces cancel each other out , the object will no longer be in equilibrium

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2 years ago

What is the period of a pendulum that is 1.3 m long?

Mkey [24]

Answer:

T≈2.2876585681s

Explanation:

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2 years ago

A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sled's potential energy?

kap26 [50]

Answer:

PE = 882 J

Explanation:

Through the International System we know that the gravity of the earth is 9.8 m/s², so...

Data:

m = 45 kg
g = 9.8 m/s²
h = 2 m
PE = ?

Formula:

$\boxed{\bold{PE=m*g*h}}$

Replace and solve:

$\boxed{\bold{PE=45\ kg*\ 9.8\frac{m}{s^{2}}*2\ m}}$

$\boxed{\boxed{\bold{PE=882\ J}}}$

The potential energy of the sled is <u>882 Joules</u>.

Greetings.

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2 years ago

A football kicked off at an angle 20° from the ground reaches a maximum height of 4.7 m. What is the initial velocity of the kic

Svetradugi [14.3K]

The motion of the football that is being kicked follows a projectile path and is parabolic in shape. It has a maximum height of meters and the angle with respect to the ground is degrees. The maximum height is the highest position vertically that the ball could reach. From the equations of an object in a projectile motion, we use the equation <span>(V*sin20)^2 = 2gh in order to solve for velocity, V. We do as follows:

</span><span>((V) (sin(20)))^2 = 2gh
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V = √ (92.12 / 0.342^2)
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</span>The initial velocity of the kick would be 28.06 m/s.

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3 years ago

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3 years ago