Planet z has diameter 1.8 × 107 m. on the planet's surface, the acceleration due to gravity is 19.5 m/s2. what is the mass of the planet? note: the constant of universal gravity (g) equals 6.674 × 10-11 n ⋅ m2/kg2.

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) .

What properties of a moving object are used in determining the object's energy of motion

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90