POSSIBLE POINTS: 7.3 A student strikes a tuning fork and holds it over the open end of a pipe that is closed at the opposite end by a container of water. When the length of the
pipe is just right, the student hears the first loud resonance frequency, the fundamental. Determine the wavelength and the frequency of the knowing that
the length of the tube is 32 cm and the speed of sound is 343 m/s.

Which two objects have the greatest gravitational force acting between them

More solar radiation is absorbed by earth’s surface than by

(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?