Three different experiments are conducted that pertain to the oscillatory motion of a pendulum. For each experiment, the length
of the pendulum and the mass of the pendulum are indicated. In all experiments, the pendulum is released from the same angle with respect to the vertical. If the students collect data about the kinetic energy of the pendulum as a function of time for each experiment, which of the following claims is true? a. The data collected from Experiment 1 will be the same as the data collected from Experiment 2.
b. The data collected from Experiment 1 will be the same as the data collected from Experiment 3.
c. The data collected from Experiment 2 will be the same as the data collected from Experiment 3.
d. The data collected from each experiment will be different.
The antenna will not work very well. In fact, an antenna is able to amplify the input signal (the radiowave) when its resonant frequency matches the frequency of the input wave. This condition occurs when the length of the antenna is comparable to the wavelength of the input wave, and then resonance occurs, and the signal is amplified. On the contrary, if the length of the antenna is much larger, then no resonance occurs, and the antenna is not able to amplify the signal.