Question

1. a chair has a mass of 10 kilograms on earth. what is the mass of the chair on mercury?

○ 10 kilograms
○ more than 10 kilograms
○ less than 10 kilograms
○ not enough information

1. a watermelon is balanced by a dog, a pumpkin, a flowerpot, and a baseball as shown below. which statement or statements are true?

image of balance scale with watermelon on one side, dog, pumpkin, flowerpot, baseball on the other
○ the mass of the watermelon is equal to the mass of the flowerpot, baseball, dog and pumpkin combined.
○ the weight of the watermelon is equal to the weight of the flowerpot, baseball, dog and pumpkin combined.
○ both a and b are true.
○ neither a nor b is true.

Explanation:

Question 4

Step1: Recall the concept of mass

Mass is an intrinsic property of an object and does not change with the change of location (like from Earth to Mercury).

Step2: Apply the concept to the chair

Since the chair has a mass of 10 kilograms on Earth, its mass on Mercury will also be 10 kilograms because mass is independent of the gravitational field or location.

Step1: Analyze the balance

A balance scale compares the mass (and thus weight, in the same gravitational field) of the objects on both sides. If the watermelon is balanced by the dog, pumpkin, flowerpot, and baseball, it means their combined mass (and weight) is equal to the watermelon's mass (and weight).

Step2: Evaluate statement A (mass)

The mass of the watermelon should be equal to the combined mass of the flowerpot, baseball, dog, and pumpkin because the scale is balanced (mass conservation in the balance context, same gravity so mass and weight balance are equivalent here for the comparison).

Step3: Evaluate statement B (weight)

Weight is the force due to gravity ($W = mg$). Since they are in the same gravitational field (same location, as the scale is set up here), the weight balance also implies the weight of the watermelon is equal to the combined weight of the other objects. So both statements about mass (A) and weight (B) being equal to the combined mass/weight of the other objects are true.

Answer:

A. 10 kilograms

Question 5