Ui
johanna makes the table below to organize her notes about centripetal forces
centripetal force
circular motion
a space station in orbit
a child in a swing
a ball on a string
which type of force should she place in the cell marked x?
o
tension
gravity
friction
o normal

Explain why electric current cannot exist if a current doesn't have a voltage source.

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)

Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal