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Which row shows two scalar quantities? A gravitational potential gravitational field strength B mass gravitational potential C gravitational field strength weight D weight gravitational potential - AQA - A-Level Physics - Question 8 - 2019 - Paper 2
Question 8
Which row shows two scalar quantities? A gravitational potential gravitational field strength B mass gravitational potential C gravitational field stren... show full transcript
Worked Solution & Example Answer:Which row shows two scalar quantities? A gravitational potential gravitational field strength B mass gravitational potential C gravitational field strength weight D weight gravitational potential - AQA - A-Level Physics - Question 8 - 2019 - Paper 2
Step 1
Which row shows two scalar quantities?
Answer
To determine which row shows two scalar quantities, we first need to identify the nature of each quantity listed:
- Gravitational Potential: This is a scalar quantity because it has a magnitude but no direction.
- Gravitational Field Strength: This is a vector quantity as it has both magnitude and direction.
- Mass: This is a scalar quantity.
- Weight: This is a vector quantity since it depends on gravitational acceleration which has a direction.
With this understanding, we can analyze the rows:
- Row A: One scalar and one vector (not valid).
- Row B: Two scalars (valid).
- Row C: One scalar and one vector (not valid).
- Row D: One scalar and one vector (not valid).
Therefore, the correct answer is B (mass and gravitational potential), as both are scalar quantities.