What are the properties (SALT) of images in a. A plane mirror?
b. A concave mirror at the different object locations?
c. A convex mirror?
d. A converging lens at the different object locations?
e. A diverging lens?

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

When an object is heated it contracts. a. true b. false

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?