In this problem, assume that the effect of friction can be discounted. (Remember to include the unit in the answer.) T 20 cm If, in the above diagram, no gravitational force slowed the ball's movement (that is, if the right-hand side of the diagram were horizontal), how far would the ball travel? 10,000 cm,100,000 cm, or indefinite distance

The answer is  the potential energy of the bob at position b is 1.47 joules.if the maximum height of the bob is 0.45 meters when it swings back,1.323   joules of energy was transformed to thermal energy.hope this

Because its not moving at that time hope u understand

C) the periods  of day and night would be fixed all year for anyone at the  equator

The correct option is this: the sound waves from the two trombones have slightly different frequencies.from the question given above, we are told that the loudness of the sounds were increasing and decreasing, this is because the frequencies of the two sounds are different. the means that the number of waves that pass a fixed point in a given amount of time differ for both sounds.