Focal lengths in the fourth lab (the one with the lenses), you graphed the inverse of the image distance (1/d,) against the inverse of the object distance (1/do). how did you find the focal length of your lens from this graph? the thin lens equation

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

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

In a system, when potential energy decreases, then entropy also decreases. true false