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an arrow is shot at an angle of theta45 above the horizontal the arrow hits a tree a horizontal distance d220m away at
a baseball is thrown from the roof of 231 -tall building with an initial velocity of magnitude 115 and directed at an
the drawing shows a side view of a swimming pool the pressure at the surface of the water is atmospheric pressure the
two children fighting over a 20-kg toy pull on the toy in different directions one child pulls to the north with a
consider a star of mass m10msun composed entirely of fully ionized c-12 its core temperature is 6108k suppose the star
consider a star of mass m10msun composed entirely of fully ionized c-12 its core temperature is 6108k a what is the
a wheel free to rotate about its axis that is not frictionless is initially at rest a constant external torque of 59
assume that the reservoir is 200m deep held back by the dam wall a small horizontal pipe at the base of the dam
three identical masses of 800 each are placed on the x axis one mass is at -110 one is at the origin and one is at
as shown in the figure below a light string that does not stretch changes from horizontal to vertical as it passes over
what is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and
the earths nearly circular orbit around the sun has a diameter of 300 million km assuming it takes 365 days for the
telescopes can be networked together to give an apparent aperature equal to their separation telescopes on either side
explain the physical processes by which astronomers are able to estimate the temperature of a gas by observing which
a projectile is launched from the ground and sails across an open field at launch its total mechanical energy is 100 j
the upper end of the string wrapped around the cylinder below is held by a hand that is accelerated upward so that the
what is the smallest capacitor needed in a computer power supply in order to produce at least 355 v for 037 seconds
the index of refraction of gold is n 31 i288 at 560nm and n122 i547 at 992um find the normal incidence absorptivity
a racetrack has the shape of an inverted cone as the drawing shows on this surface the cars race in circles that are
suppose that the terminal speed of a particular sky diver is 165 kmh in the spread-eagle position and 305 kmh in the
a convex lens is made of crown glass with index of refraction n15296 at 4800 nm and n15203 at 6563 nm the radius of
in figure 5-66 a force f of magnitude 7 n is applied to a fedex box of mass m2 10 kg the force is directed up a plane
an electron moves in a force field due to a uniform electric fied eeij and a uniform magnetic field bbk take the
magnus has reached the finals of a strength competition in the first round he has to pull a city bus as far as he can