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a 25hp electric motor on a water well pumps water from 10m below the surface the density of water is 10 kg per liter
light with a wavelength range of 145-295 nm shines on a silicon surface in a photoelectric effect apparatus and a
an atwoods machine is made with masses m1100g m2 120g and pulley mass of 100g what is the percent error in acceleration
a solid cylinder of mass 10 kg is pivoted about a frictionless axis thought the center 0 a rope wrapped around the
a rotating flywheeel can be used to store energy if it is required to store 100 x 106 j of energy when rotating at
a 300-m long rod is hinged at one end the rod is initially held in the hozizontal position and then released as the
a laser that produces a spot of light that is 125 mm in diameter is shone perpendicularly on the center of a thin
unpolarized light of intensity i0 is incident on a series of four polarizers each rotated 25deg from the preceding one
a uniform electric field exists between two parallel plates separated by 20cm the intensity of the field is 15knc what
a solenoid is made of 4000 turns of wire wrapped around a hollow cylinder of radius 10 cm and lengh 50 cm what is the
the potential difference across a resting neuron is about 80 mv and carries a current of about 010 ma how much power
you are piloting a spacecraft whose total mass is 1130 kg and attempting to dock with a space station in deep space
nichrome wire of cross-sectional radius 0750 mm is to be used in winding a heating coil if the coil must carry a
a conductor with cross-sectional area 6 cm2 carries a current of 15 aif the concentration of free electrons in the
in this problem you will determine the distance to jupiter by applying fma for circular orbits by observing jupiter we
a concave mirror forms a real image which is twice the size of the object if the object is 20 cm from the mirror
a certain lcd projector contains a single thin lens an object 295 mm high is to be projected so that its upright image
if 200 g of iron metal are reacted in a calorimeter with a heat capacity of 500 joulescelsius what would be the final
you stand in the earths magnetic field directly facing its horizontal component in other words facing magnetic south
calculate the ratio of the masses of the buffer components hclokclo required to make a buffer with a ph of
there is a solution which includes h03m fe2005m and pb2005m and that this solution is saturated with h2s means you take
a 138-g piece of zinc was heated to 988 oc in boiling water and then dropped into a beaker containing 450 g of water at
an 150-kg box is released on a 350 incline and accelerates down the incline at 0290ms2a find the friction force
sulphur displays a wide range of oxidation numbers determine the oxidation number of sulphur in each of the following
at the low point in it swing a pendulum bob with a mass of 046 kg has a velocity of 22 msa what is its kinetic energy