Chandra is doing an experiment to find out which type of dog food her dog prefers. the following are the steps of her experiment:

1. place five identical bowls next to each other in the dog's yard.

2. place a different type of dog food into each bowl.

3. observe which foods the dog eats and how much of it he eats.

4. record all observations.

5. repeat the experiment at the same time every day for the next week.

6. analyze the results.

which variable did chandra change in the experiment?
a.
the type of dog food
b.
the dog food bowl
c.
the time of day the dog was fed
d.
the type of dog

A the type of dog food because it was different and every other thing was the same.

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper