Astudent measures the gravitational acceleration g to be 9.76±0.07 m/ improve his precision he spend a whole day repeating the measurement 400 times. he states the mean of the 400 measurements g - 9.746 m/s2 as his best estimate of g. in the lab g has an accepted value of g 9.80664 0.2 m/s arising from a precision measurement conducted by geo-physicists in the past

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

Your physics assignment is to figure out a way to use electricity to launch a small 6.0-cm-long plastic drink stirrer. you decide that you'll charge the little plastic rod by rubbing it with fur, then hold it near a long, charged wire, as shown in figure p23.56 . when you let go, the electric force of the wire on the plastic rod will shoot it away. suppose you can uniformly charge the plastic stirrer to 10 nc and that the linear charge density of the long wire is 1.0 x10-7 c/m. what is the net electric force on the plastic stirrer if the end closest to the wire is 2.0 cm away?

How do the types of electromagnetic waves differ