A spring stretches by 15cm when a mass of 300g hangs down from it. If the spring is stretched an additional 10cm and released, calculate the spring constant.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

answercollision;