Express the following in scientific notation: .000457
457 x 10-6
4.57 x104
4.57 x 10-4
457 x 106

An object is located 30.0 cm from a concave mirror. the focal length is 15.0 c,. what is the image distance? a. 30.0 cm b. -10 cm c. 10.0 cm d. -30.0 cm

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?