The objective and ocular of an astronomical telescope are 2.3 m apart and focused on a star at infinity. The ocular has a focal length of 5.0 cm. What is the telescope's angular magnification

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?