Which of the following is an example of a task an astronomer might perform? O plan the orbit for a satellite

O design a rocket to launch a satellite

O develop satellite quality standards

O analyze satellite imagery

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

1) estimating temperature to the nearest tenth of a degree

2) estimating the mass of the sample to the nearest tenth of a gram

4) the position of the cups of sand and water under the heat lamp