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state two measurements you would take in an experiment to determine the upthrust of an object which is immersed in a
it takes an elevator 35 minutes to raise a vehicle with a weight of 4198 n from the floor to a height of 8 meters what
the windows in an office tower are coated with a film to minimize reflected light of wavelength 550 nm if the glass has
a 2177 kg satellite is in a circular orbit of 22000 miles 35405000 m in radius the force keeping the satellite in orbit
state the main reason as to why the magnetic field strength of a magnet is greatest at the
explain why the image formed in a pin hole camera gets blurred when the hole is
an experiment is set up in a copper calorimeter of mass 82 g containing 841 g of water at 175 degrees c an iron ball
periodic waves spread out of the surface of a lake where two women jenny and melissa are fishing in separate boats 38
assignment circular motion gravitation and work and energyplease solve the following problems you must show all work
gravitational forceeach week you will reply to two discussion forum questions you may submit your answers together or
1 a surface completely surrounds a 2e-6 c charge find electric flux through this surface when surface ia a sphere with
1nbspthe nucleus of a certain atom has a radius of 40 times 10-15 mnbspan electron orbits the nucleus at a radius of 15
a stone is thrown vertically upwards and reaches a height of 100 m determine the initial velocity of the
a 81 kg chunk of ice has a temperature of -30 degrees c the pressure is one atmosphere heat is added to the chunk until
a conductor is slowly bought near the cap of a positively charged electroscope the leaf first collapses and then
state the number of images formed when an object is between two plane mirror placed in
a tube has a length ofnbsp0022nbspm and a cross-sectional area ofnbsp36nbspx 10-4nbspm2 the tube is filled with a
state hookes law a spring will stretch 12 cm when a 250-g mass is hung on it if the 250-g mass is hung on two identical
a frictionless horizontal simple harmonic oscillator has a mass of 015 kg and 0030 j of mechanical energy what are the
suppose that water completely fills a pipe 060 m below ground and flows through it at 050 ms suppose further that it
imagine a heat engine designed to operate between two reservoirs whose temperatures are those from the preceding
an aluminum bar of length 500 cm and diameter 150 cm connects two regions whose temperatures are 20 degc and 980 degc
suppose that 200 g of ice at 00 degc and 0180 l of water at 250 degc are mixed ideally so that energy is exchanged only
suppose that 200 times 1023 molecules of an ideal gas exist at 400 atm and 295 k and that they expand isothermally by a
an electromagnet is made by winding insulated copper wire on an iron core state two changes that could be made to