The Radius of Earth Is 6,378 Km

question 22

Multiple Choice

The radius of Earth is 6,378 km. The force of gravity on a 1 kg ball at Earth's surface is 9.8 kg m/s².  What is the force of gravity on this same ball when the ball is located 12,756 km from Earth's center? Hint: G = 6.67  10^-11 m³/s²/kg

• A) 2.45 kg m/s²
• B) 4.9 kg m/s²
• C) 9.8 kg m/s²
• D) 19.6 kg m/s²
• E) 39.2 kg m/s²

Grasp the concept of Outlook's special file formats for storing emails, calendar entries, and contacts.

Understand how to manage and interpret email messages' sensitivity levels and importance.

Demonstrate knowledge of email protocols and server types used in Outlook.

Recognize the significance of signatures, subject lines, and message headers in emails.

---

Definitions:

Fretting

Wear at the contact surfaces of two materials that occurs from repeated cyclical motion or vibration, often seen in electrical connections.

Thermal Cycling

A pattern of heating and cooling that, over time, can cause resistance to build up in electrical connections.

Amps

A unit of electric current, short for amperes, indicating the amount of electrical charge passing a point per second.

Voltmeter

An electrical measuring instrument used to measure the electrical potential difference between two points in an electric circuit.