Which object is visible only by reflection? a) the sun b) earth's moon c) a candle flame d) a bolt of lightening

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

Ineed ! using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.