Problem Statement: John decided that he was going to conduct an experiment to determine the value of the acceleration due to gravity by means of a simple pendulum. Copper wire, nylon string and an elastic band were used as the plumbline, but he was fearful that the nature of the material would affect his data. Plan and design an experiment to see if it is so. Title:
Hypothesis:
Aim:
Apparatus:
Diagram (if necessary)
Procedure
Data collection
Variables:
Manipulated
Responding
Control
Expected results:
Precaution/Limitation/sources of error

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. determine whether this is a physical change or a chemical change. explain your answer

Describe uniform velocity and variable velocity in short

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)