A scientist investigated how the maximum muscle power of humans varies with age and gender. The scientist asked volunteers to stand on a platform and to jump as high as they could.
Figure 4 shows a volunteer taking part in the experiment. Figure 4
An electronic timer measured the time that the volunteer was in the air.
The muscle power in watts per kg is calculated using the following equation:
muscle power = 9.8 × jump height time
One volunteer has a muscle power of 41 W/kg He was in the air for 0.12 s
0 3 . 1
Calculate his jump height.

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.

hope this ! this is not copied! search it up, it's free of plagiarism!

conservation of mass

mass before something happens = mass afterwards

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015