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What are the three basic SI units and how are mass and weight different? Convert 4kg to grams and show 10:10 and 17:55 on a clock.

Physics

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Answer

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4000 grams\text{4000 grams}

Step-by-step solution

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Here are the solutions to your questions.

Part 1

The first three basic units that most of the SI units are derived from are:

  • Metre (for length)
  • Kilogram (for mass)
  • Second (for time)

Part 2

4000 grams\text{4000 grams}

  1. State the conversion factor between kilograms and grams.

    1 kilogram=1000 grams1 \, \text{kilogram} = 1000 \, \text{grams}

  2. Convert 4 kilograms to grams.

    4 kilograms=4×1000 grams4 \, \text{kilograms} = 4 \times 1000 \, \text{grams} 4 kilograms=4000 grams4 \, \text{kilograms} = 4000 \, \text{grams}

    There are 4000 grams\boxed{\text{4000 grams}} in 4 kilograms.

Part 3

Mass is a measure of the amount of matter in an object and is constant regardless of location. Weight is the force of gravity acting on an object's mass, and it varies depending on the gravitational field.

Part 4

Part i

To show "10 minutes past 10" (10:10)

  • The minute hand points to the '2' (representing 10 minutes).
  • The hour hand is slightly past the '10', approximately one-sixth of the way between 10 and 11. (Since I cannot draw, I will describe the position of the hands.) The minute hand points directly at the number 2. The hour hand points slightly past the number 10.

Part ii

The time shown on the digital clock is 17:55\boxed{\text{17:55}}.

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