Include units with all of your answers. a 1.84 kg bucket full of water is attached to a 0.76 m long string.
a. if you swing the bucket in a vertical circle, what is the minimum speed you must swing it so the water does not fall out at the top of the circle?
b. what is the magnitude of the tension in the string at the top of the circle if you are swinging it at 3.55 m/s?
c. what is the magnitude of the tension in the string at the bottom of the circle if you are swinging it at 3.37 m/s?

Abox is sliding on a frictionless surface when it suddenly begins to rain heavily. if the downpour of rainfall falls vertically into the box

The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz

Eof 20 degrees. the index of refraction of air is 1.0003, and the index of refraction of water is 1.33. the angle of refraction rounded to the nearest whole number is °.