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A child whose weight is 287 N slides down a 6.6 m playground slide that makes an angle of 41 degree with the horizontal. The coefficient of the kinetic friction between slide and child is 0.86.
(a) How much energy is transferred to the thermal energy ?
(b) If she start at the top with a speed of 0.568 m/s , what is her speed at the bottom
222
What are the magnitude and direction of the electric field midway between two point charges , -12 micro C and +13 micro C , that are 8.9 cm apart ?
260
Where should an object be placed in front of a convex spherical mirror of 15.5 cm focal length in order to get a virtual image with a magnification of one-half ?
262
Find the current through each resistor in the diagram as shown at "click here" .
