A machine that uses 200 w of power moves an object a distance of 15 m in 25 sec. Find the force needed and the work done by this machine,

i guess it’s a and b

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

dang that balls went far

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is