How do i find the weight of the suitcase
pls help asap​

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Why should seat belts not be mandatory quick plz

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)