You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 6 cm wide and 7 mm high. You must move your hand up and down once,
a. the same distance up as before, but take a shorter time. b. the same distance up as before, but take a longer time. c. a smaller distance up, but take a shorter time. d. a greater distance up, but take a longer time. e. a greater distance up, but take the same time.
D
You might also like to view...
A 1-kg ball is released from a height of 6 m, and a 2-kg ball is released from a height of 3 m. Air resistance is negligible as they fall. Which of the following statements about these balls are correct? (There could be more than one correct choice)
A) As they reach the ground, the 1-kg ball will have more kinetic energy than the 2-kg ball because it was dropped from a greater height. B) As they reach the ground, the 1-kg ball will be moving faster than the 2-kg ball. C) Both balls will reach the ground with the same speed. D) Both balls will reach the ground with the same kinetic energy. E) Both balls will take the same time to reach the ground.
Determine the change in length of a 20-m railroad track made of steel if the temperature is changed from ?15°C to +35°C. (?STEEL = 1.1 × 10^?5/°C)
The Big Bang predicts that after the universe was born it
A) consisted of an equal mixture of all the chemical elements B) was completely empty C) consisted of mostly hydrogen and helium D) consisted of mostly carbon, hydrogen, oxygen and nitrogen
In polymer blends, the enthalpy of interaction is determined from the experimentally determined _____________parameter.
Fill in the blank(s) with the appropriate word(s).