1. The frequency of a sound from your mouth is 250 Hz. a) Calculate the wavelength of this sound (use
Table 1 to find the speed).

b) Explain why sound is diffracted when it leaves
your mouth.

How are momentum and impulse related? impulse is a whim to do something, while momentum keeps it going impulse is another name fore instantaneous momentum the impulse acting on and object is equal to the change of momentum it causes. the impulse that acts on and object is the momentum that results.

According to the tide table below what time of day will the highest tide occur?

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.