1,What is the k. E. a moving car with a mass of 45 kg- moving at a speed of 25 m/s?

2, What is the PE⋅ of a Chandelier with a mass of hangging at a height of 103 m?

3,calculate the current of lamp connected to 220 v and has a resistance of 15 ohms


4,What is the speed of sound inside the studio with 15°C


5, What is the mass of the cat on top of the roof with a height of 36 and has a pe of 10

Using GRESA I need this tomorrow please answer ​