During World War I, the Germans had a guncalled Big Bertha that was used to shell Paris. The shell had an initial speed of 1.66 km/s atan initial inclination of 38.8 to the horizontal. The acceleration of gravity is 9.8 m/s^2How far away did the shell hit? (in km)How far was it in the air? (in s)

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

With physics question #5? for any !

The lift raises a car of mass 850 kg to a height of 2.1 m. it uses a force of 8330 n and takes 4 seconds to raise the car. what is the power of the lift?