Ilook through tance of 672 meters away from me. the mushroom is 13.4 cm tall, and the telescope has an objective focal length of 816 cm and an eyepiece focal length of 1.72 cm. what is the magnitude of the angular size of the image of the mushroom you are looking telescope at a mushroom a dis- at? (a) 4.20 x 107 degrees (b) 9.19 x 105 degrees (c) 2.41 x 10-5 degrees (d) 5.42 degrees (e) 16 degrees (f) 9.46 x 10-2 degrees (g) none of the above

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?