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a 1000 kg car moving at 30 ms due north collides completely elastically with a 1250 kg truck heading 45 degrees north
1 mole on an ideal gas is at a pressure of 10 atm and a temperature of 30c what is the volume of that gas in cubic
total electric charges q are distributed uniformly onver the half spherical shell calculate the electric field at the
a 110x10 kg car starts from rest and accelerates for 500s the magnitude of the acceleration is a 460 ms determine the
the figure below shows a thin-lens representation of a compound microscope not to scale the objective produces a real
find the focal length of contact lenses that would allow a nearsighted person with a 145 cm far point to focus on the
suppose a planet is discovered that has the same amount of mass in a given volume as the earth but has radius 15
a 2 kg object is dropped and falls 20m at which point it is caught and a net force of 100n is exerted on the object how
an object of mass 302 kg moving with an initial velocity of 495 j ms collides with and sticks to an object of mass 267
two capacitors give an equivalent capacitance of 900 pf when connected in parallel and an equivalent capacitance of 200
a wall is constructed of a 2 inch layer of fiberglass board r 8 and six inches of fiberglass batting r 19 if the
a 2kg box slides along a frictionless surface with a speed of 15ms and approaches a horizontal spring with a spring
the drawing shows three identical rods a b and c moving in different planes a constant magnetic field of magnitude 450
a series rcl circuit contains a 30-mh inductor 120-f capacitor and 150- resistor the rms voltage of the generator is
the long straight wire carries a current of 30 a a particle has a charge of 65x10-6 c and is moving parallel to the
an ac generator has 100 rectangular loops on its armature each loop is 11 cm long and 6 cm wide the armature rotates at
six identical books 4cm thick and 8kg mass all lie flat on a tablea how much work is needed to stack all the books
a series circuit has a peak voltage of 114 and a peak current of 3 if the current lags the voltage by 42 what is the
a 966 times 1014 hz electromagnetic wave propagates in carbon tetrachloride with a speed of 205 times 108 ms the
a person pushes a crate rightward along a rough horizontal surface by pushing downward at 30 degrees below the
a thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized the lens has
a ferris wheel is moving at an initial angular velocity of 10 rev54 s if the operator then brings it to a stop in 34
a proton moves perpendicular to a uniform magnetic field at a speed of 140 107 ms and experiences an acceleration of
a spring is hung from the ceiling a 0430 -kg block is then attached to the free end of the spring when released from
a mass spectrometer is used to examine the isotopes of uranium ions in the beam emerge from the velocity selector at a