Physics, 12.11.2019 21:31 prettyboytony4738
Aspherical weather balloon is filled with hydrogen until its radius is 4.40 m. its total mass including the instruments it carries is 19.0 kg. (a) find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3. kn (b) what is the net force acting on the balloon and its instruments after the balloon is released from the ground? kn (c) why does the radius of the balloon tend to increase as it rises to higher altitude?
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John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?
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Physics, 22.06.2019 10:30
You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.
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Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?
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Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
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Aspherical weather balloon is filled with hydrogen until its radius is 4.40 m. its total mass includ...
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