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a certain source of sound wavesradiates uniformly in all directions at a distance of 15 mfrom the source the intensity
a bullet with a mass of 06 kg hits a 50 kg block with an initialspeed of 225 ms the block is connected to a spring the
a 14580 kg automobile has a wheel basethe distance between the axles of 280m the center of mass of the automobile is on
a wire has a resistance of 600 ohms and is bent into a squareloop with sides of length 150 cm the loop is
a laser is mounted in air m above the edge of a large horizontalpane of crown glass n 1520 as shown in thedrawing the
spring is compressed by 00925 mand is used to launch an object horizontally with a speed of383 ms if the object were
an extreme skier starting from rest coasts down a mountain thatmakes an angle of 393 deg with the horizontal the
a small mirror is attached to a vertical wall and it hangs adistance of 159 m above the floor the mirror is facing
by what factor does the resistance of a copper wire change if its length doubles and its diameter triples if the
a box is fixed to a rope and is kept moving uniformly on a circleof radius 1m the rope exerts a force of 10n on the box
a roller coaster at the six flags great america amusement parkin gurnee illinois incorporates some clever design
the solar panels on the roof of a house measure 40 mby 53 m assume they convert12 of the incident em waves energy to
an ideal fluid with density of 085 x103kgm3 flows at 70 ms through a level pipe with aradius of 050 cm the pressure in
a ball is thrown upward at a speed v0 at anangle of 530deg above the horizontal it reaches a maximumheight of 84 m how
a locomotive slows from a speed of 26 ms to 0 in 18s what is the distance traveled in
a two-stage rocket moves in space at a constant velocity of4640 ms the two stages are then separated by a small
a thin rod is rotating at anangular velocity of 70radsec about an x axis that isperpendicular to the rod at its center
in a football game a receiver is standing still having justcaught a pass before he can move a tackler running at a
how much power is radiated by a tungsten sphere emissivitye035 of radius 21 cm at a temperature of 22 cin wif the
a convex lens is held over a piece of paper outdoors on a sunny day when the paper is held 30 rm cm below the lens the
a 220 kg floodlight in a park issupported at the end of a horizontal beam of negligible mass thatis hinged to a pole a
a baseball m 155 g approaches a bat horizontally ata speed of 391 ms 875 mih and is hit straight back at a speedof 486
a spring with constantk 40 nm is at thebase of a frictionless 30 inclined plane a 05 kg blockis pressed against the
a model rocket is constructed with a motor that can provide atotal impulse of 210 nmiddots the mass of the rocket is
a wall is composed of two materials material 1 has a thickness of322 cm and a thermal conductivity of 01 while material