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3 years ago

Weight and mass are interchangeable terms. a. True b. False

1 answer:

8 0

False
Weight is measured in Newtons and is dependent on gravitational force (weight = mg where m is mass and g is gravitational force). Mass is simply the amount of matter something contains.
No matter where you go, you'll always have the same mass. But if you go to the moon where there is less gravitational force, you WEIGH less.

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How many additional valence electrons does fluorine need to have a full

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D= Seven

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2 years ago

A satellite is in a circular orbit 8200 km above the Earth’s surface; i.e., it moves on a circular path under the influence of n

andreyandreev [35.5K]

Answer:

5.23km/s

Explanation:

Given

Radius of Earth = 6.37 * 10^6 m

Altitude of Satellite = 8200km = 8200 * 10³m = 8.2 * 10^6 m

Gravity Acceleration on Satellite Altitude = 1.87965m/s²

For a satellite to remain in circular orbit, then it means the acceleration of gravity must be exact as the centripetal acceleration.

Centripetal Acceleration = V²/R

So, Acceleration of Gravity (A)= Centripetal Acceleration = V²/R

Make V the subject of formula

A = V²/R

V² = AR

V = √AR

Where R = (radius of earth) + (altitude of satellite)

R = 6.37 * 10^6 + 8.2 * 10^6

R = 14.57 * 10^6m

A = 1.87965m/s²

V = √(1.87965 * 14.57x10^6)

V = √27386500.5

V = 5233.211299001789

V = 5233.2113 m/s ------- Approximated

V = 5.23km/s

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3 years ago

7.1 Project Guidelines 2021

Ede4ka [16]

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Models help us to understand systems and their properties

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