What is the mass of a toy truck if 18 N of force is needed to accelerate the boat to
2 m/s2 ?

In what direction does the medium move relative to the direction of the wave? explain.

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?