The figure shows a snapshot of four different waves in identical ...

[hbsimmons88]

The figure shows a snapshot of four different waves in identical ropes stretched with the same force.
 
  The waves with the largest amplitude are _________ and _________.

Question 2

A juggler throws two balls up to the same height so that they pass each other halfway up when A is rising and B is descending. Ignore air resistance and buoyant forces. Which statement is true of the two balls at that point?
 a. There is an residual upward force from the hand on each ball.
  b. There is a greater residual force from the hand on A than there is on B.
  c. Only gravity acts on B but there is an additional residual force from the hand on A.
  d. There is an additional downwards force besides gravity on each ball.
  e. The only force acting on each ball is the gravitational force.

[Fayaz00962]

Answer to Question 1

I and II

Answer to Question 2

e

[hbsimmons88]

Thanks for the timely response, appreciate it

[Joy Chen]

Gracias!