Two charged spheres on a frictionless horizontal surface are attached to opposite ends of a string & are in static equilibrium. the 30 kg red sphere has more charge than the 8 kg green sphere. the total charge magnitude on the spheres is 1171 μc & they have the same polarity. as a result the tension is 5062.5 n & the centers of the spheres are 0.78 m apart. determine the charge magnitude on each sphere.

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.