Q. A 1.50-kg block of wood sits at the edge of a table, 0.782 m above the floor. A 0.0105-kg bullet moving horizontally with a speed of 770 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
Q. You are standing 2.5 {rm m} directly in front of one of the two loudspeakers shown in the figure. They are 3.0 {rm m} apart and both are playing a 686 {rm Hz} tone in phase. As you begin to walk directly away from the speaker, at what distances from the speaker do you hear a minimum sound intensity? The room temperature is 20 ^circ {rm C}.