A given wood has a dimension of 2m length ,50cm width and 10cm thickness if it floats while 25% of its volume is above the water then what would be its mass

Need in all of themmm only answer if you know plsssss

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j