Final answer:
When weighing yourself on a bathroom scale and pushing down on a nearby table, the scale's reading will be low because part of your body weight is transferred to the table, reducing the force on the scale.
Step-by-step explanation:
When you weigh yourself on a bathroom scale, if you reach out and push downward on a nearby table, the weight reported by the scale will be low. Bathroom scales measure the normal force exerted by the scale on your body, which is equivalent to the gravitational force (your weight) when there are no other forces acting on you. As you push down on the table, some of your weight is transferred to the table, and in reaction, the table exerts a force upwards on your hands. This force reduces the force you exert on the scale, making the reading lower than your actual weight. The scale's reading decreases because part of your weight is applied to the table and the table exerts a matching upward force on you.
Additionally, a bathroom scale calibrated for Earth's gravity would not read the same mass on the Moon due to the difference in gravitational force. Nevertheless, it measures weight in newtons or pounds, which is a force, and is calibrated to display mass in kilograms by assuming the standard acceleration due to Earth's gravity is 9.80 m/s2.