Discovery Science Book - 9 24. A force acting on a particle of mass 500 gm displaces it through 400 cm in
2 sec. Find the magnitude of the force if the initial velocity of the particle is
is zero

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.