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a ball with 3gr mass and momentum p strikes elastically a wall and bounces off calculate the change in the balls
in a graphing calculator there are four aaa batteries which together provide a potential difference of 15 v and a total
a thermometer can be made from a brass wire temperature coefficient of resistivity 000150degc1 at 200degc which has a
the graphite in a pencil has a resistivity of 784times106 wm the graphites diameter is 0700 mm and its length is 400
12-gauge copper wire has a radius of 103times103 ma what is the resistance of 115 m of this wire at 20degcb how much
a tall tree is growing across a river from you you would like to know the distance between yourself and the tree as
a solid uniform disk of radius 0250 m and mass 451 kg rolls down a ramp of length 520 m that makes an angle of 131deg
a 1840 w radiant heater is constructed to operate at 115 v what is the resistance in ohms of the heating
a 240 kg ball is attached to an unknown spring and allowed to oscillate the figure shows a graph of the balls position
calculate the wavelength of an electron that has been accelerated through a potential difference of 110
the star nearest the earth the sun radiates the most energy at a wavelength of 470 nm what is the temperatures of the
light of wavelength 650 nm is incident normally upon a glass plate the glass plate rests on top of a second plate so
a cylindrical storage tank has a radius of 143 m when filled to a height of 360 m it holds 13500 kg of a liquid
a paperweight when weighed in air has a weight of w 114 n when completely immersed in water however it has a weight of
the image produced by a concave mirror is located 27 cm in front of the mirror the focal length of the mirror is 15 cm
at a rock concert the sound intensity 10 rm m in front of the bank of loudspeakers is 010 wm2 a fan is 30m from the
two mass-spring systems have the same mass and the same total energy the amplitude of system 1 is three-fourths that of
a 400 g mass is suspended from a thread 45 cm long that can sustain a maximum tension of 80 n before breaking what is
if the operators of a spy satellite pondered using it to photograph license plate numbers the camera uses a lens with a
a microscope uses an eyepiece with a focal length of 149 cm using a normal eye with a final image at infinity the tube
a boeing 747 jet with a wingspan of 600 m is flying horizontally at a speed of 300 ms over phoenix arizona at a
a 12 kg block rests on a frictionless surface and is attached to a horizontal spring of constant k 27 nm the block is
a convex mirror has a focal length of -255 cm find the magnification produced by the mirror when the object distance
a woman holds a tube of lipstick 57 cm from a spherical mirror and notices that the image of the tube is upright and
the angular momentum of a flywheel having a rotational inertia of 0140 kg m2 about its axis decreases from 340 to 090