The weight of an object is the product of its mass, m , and the acceleration of gravity, g (where g=9.8 m/s 2 ). if an object’s mass is m=10. kg , what is its weight?

The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s2 ). Therefore, If an object’s mass is m=10 kg, its weight will be 98 Newton.

Further Explanation Mass  Mass is the amount of matter in a body or a substance. Mass is measured in kilograms and measured using a beam balance. Mass of an object or a body remains constant everywhere that is, it does not change with the gravitational pull or with the body’s location. Weight  Weight is the measure of the gravitational pull of gravity of an object. Weight is measured in Newton using a spring balance. It is a vector quantity and its direction is towards the center of the planet. Weight changes with location of a body or gravitational acceleration as it is dependent on gravity. It changes depending on the amount of gravitational pull exerted by an object on a body, such that the more the gravity the heavier the object and the less the gravity the lighter the object. Weight is given by multiplying the mass of a body by the gravitational acceleration That is; Weight = mass (M) x gravitation pull (g)

                      W = Mg  

Therefore;  

A body with a mass of 10 Kg on a surface with a gravitational acceleration of 9.8 m/s2 will have a weight equivalent to;

Weight = Mg  

             = 10 Kg x 9.8 N/m2  

              = 98 N

Keywords: Weight, mass, gravitational acceleration  

Learn more about: Mass: Weight: Units of measuring weights and mass: Differences between mass and weight:

Level: High school  

Subject: Physics  

Topic: Mass and weight  

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current