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an astronaut is being tested in a centrifuge the centrifuge has a radius of 659 m and in starting rotates according to
a block of solid water m 12g ti -5 degress c is placed as ammo inside a spring loaded cannon the spring in this
you stand on a frictionless platform that is rotating with an angular speed of 72 revs your arms are outstretched and
a block of mass m is attached to a cord that is wrapped around the rim of a flywheel of radius r and hangs vertically
an object is 20 cm to the left of a thin diverging lens having a 10 cm focal length what is the image distance find the
nbspratio of coulomb and gravitational force magnitudesit is known that the electric force between two objects is
what is the magnitudeof the electric field at a distance of 410times10minus10 m from a uraniumnucleuswhat is the
an otto engine uses a gas having gamma 140 and has a compression ratio of 860part a out of every gallon of fuel this
a model of a helicopter rotor has four blades each 360 m in length from the central shaft to the bladetip what is the
an lc circuit has zero resistance no battery a capacitor c46microfarads and an inductor l02h connected in a simple loop
a brick is initially 1480 cm high and an aluminum can is initially 1481 cm high by how much must their temperatures be
blood is a viscous fluid if due to plaque the cross-sectional area of an artery is reduced by a factor 6 over a segment
if it is orbital velocity that keeps the electron orbiting the protron and as its energy decays does it get drawn into
two moles of an ideal gas undergo a reversible isothermal expansion from 310times102m3 to 500times102m3 at a
a balloon is filled with 500 liters of helium at a pressure of 120 atm and a temperature of 270 degrees ca find the
two people are carrying a uniform 7280 n log through the forest bubba is 31 m from one end of the log x and his partner
suppose that a 100 cm3 box in the shape of a cube is perfectly evacuated except for a single particle of mass 121 10-3
two point particles move toward the right as shown in the figure if particle 1 has mass m and speed v and particle 2
a 60-cm-diameter cylinder of nitrogen gas has a 40-cm-thickmovable copper piston the cylinder is oriented vertically
a dipole is located at the origin with charges 3 nc and -3 ncseparated by 4 mum consider a spherical gaussian
the left ventricle of the heart accelerates blood from rest to avelocity of 24cmsa if the displacement of the blood
the coefficient of performance of a refrigerator is defined as the ratio of heat extracted from the refrigeration
a person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her
on a cold day ming rubs her hands together to warm them up she presses her hands together with a force of 41 n each
a 072 mm diameter hole is illuminated by infrared light of wavelength 25 micrometers what is the angle of the first