Find the weight of the hanging mass when the spring, with spring constant 16.5kN/m , has been stretched 12.3cm . The tension in rod BD is 3600 N . Recall that the pulley is massless.

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

it would be c. predictability

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.