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a fisherman notices that his boat is moving up and down periodically without any horizontal motion owing to waves on
in a hydroelectric installation a turbine delivers 1500 hp to a generator which in turn converts 750 of the mechanical
a 52g firecracker is at rest at the origin when it explodes into three pieces the first with mass 15g moves along the
a laser beam shines straight up onto a flat black foil with a mass of 230 g what laser power is needed to levitate the
a small object with a mass of 330 mg carries a charge of 250 nc and is suspended by a thread between the vertical
a wire of length l carries a current i in the positive direction of an x axis through a magnetic field byj hat bz k
a 0283-m-thick sheet of ice covers a lake the air temperature at the ice surface is -177 degc in 310 minutes the ice
a 75 cm diameter horizontal pipe gradually narrows to 6 cm when water flows through this pipe at a certain rate the
a 65 kg man is on ice skates the skates blades have a total contact area of 20 cm2 how much pressure does the man exert
which of the following chemical shifts would correspond to an aldehyde proton signal in a 1h nmr
a wheel is disconnected from a motor and come to rest from 12000 rpm because of a 110 mmiddotn frictional torque if the
what is the specific activity in ci g-1 of the nuclide br mass 90 atomic number35 whose half life is 16
a a 55 kg particle and a 25 kg particle have a gravitational attraction with a magnitude of 28 multiplied by 10-12 n
how much will you pay for gasoline if you drove to alltel football stadium in jacksonville to watch the dawgs play the
a gyroscope with rotational inertia 64 10-3 kgmiddotm2 is precessing in a horizontal plane at 046 rads under the
calculate the limit of resolution for the oil lens of your microscope assume an average wavelength of
together americans drive about 50 x 109 miles per day and their cars get an average of 22 miles per gallon of gas used
moon effect some people believe that the moon controls their activities the moon moves from being directly on the
in 1736 a famous swiss mathematician leonhard euler 1707 - 1783 started the work in the area of graph theory through
a drunk driver in a 2300kg car plows into a 2100kg parked car with its brake set police measurements show that the two
as shown in the figure a 18 kg cylinder can rotate about an axle yellow r16 cm l672 cma calculate its moment of inertia
a tank contains 0804 mol of molecular nitrogen n2 determine the mass in grams of nitrogen that must be removed from the
a subatomic particle x spontaneously decays into two particles a and b each of rest energy 140 times 102 mev the
walking fast can consume 50 kcal per minute how many hours of exercise are required to consume 450 kcal the energy in a
in both the rutherford theory and the bohr theory we neglected any wave properties of the particles estimate the de