The student creates a symmetric wave pulse traveling to the right on the same string. The amplitude of the second pulse is half the amplitude of the original pulse. Which pulse, if either, travels at a higher speed?

a. The higher amplitude pulse.
b. The lower amplitude pulse.
c. Neither, both pulses travel at he sane speed.

Briefly explain your answer.

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What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?