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a 35 child slides down a playground slide at a constant speed the slide has a height of 32 and is 72 long using energy
in the arrangement shown below an object can be hung from a string with linear mass density 0002 00 kgm that passes
a small solid ball of mass m and radius r rolls without slipping on the track whose height y as a function of
2750 g of lead at 120 degrees c is added to 150 kg of 85 degrees c water the heat of vaporization for water is 226 x
a converging lens with a focal length of 920 cm forms an image of 320 cm tall real object that is to the left of the
you measure an angle of 213 when the light passes through a grating with 640 lines per mm what is the wavelength of the
a ray of light is incident on the surface of a block of clear ice at an angle of 320deg with the normal part of the
in each of the following cases the mass is 320 kg and the radius is 750 cm a what is the moment of inertia kg m2 of a
suppose you are selling apple cider for six dollars a gallon when the temperature is 36 degc the coefficient of volume
a car is traveling at 843 kmhr the tires have a radius r 384 cm a what is the angular speed of the tire in si units b
an object is placed 34 cm to the left of a converging lens of focal length 28 cm a convex mirror of focal length -39 cm
blood can carry excess energy from the interior to the surface of the body where the energy is dispersed in a number of
a 173-kg sculpture hangs from a horizontal rod that serves as a pivot about which the sculpture can oscillate the
oblers paradox presented the contrary facts that the universe had to be infinite and uniform in order to be stable and
the radiation emitted by the primordial fireball of the big bang had a blackbody spectrum corresponding to about 3000 k
the evolution of the universe after the big bang is divided into a radiation dominated universe and a matter dominated
a block of silver mass ms 205 kg is heated in a furnace to temperature ts but remains solid it is now dropped on a
a if two sound waves one in air and one in fresh water are equal in intensity what is the ratio of the pressure
a copper wire wrapped into a coil is hooked to a 300v battery and a switch at t0 the switch s is closed at t20 seconds
the attraction of ceres ceres the largest asteroid known has a mass of roughly 87x1020kg if ceres passes within
a block of mass slides on a frictionless tabletop it is connected to a string that passes over a pulley and suspends a
the net entropy changes when a 85g ice cube initially at 0 degrees c melts in a room part a what is the net entropy
a hot air balloon is descending vertically with a speed of 40 ms when a passenger drops a 05 kg camera if the camera is
an automobile engine with an efficiency 023 dumps heat to the environment at the rate of 450 kw part a whats its
two beads slide along a straight frictionless wire the first has a mass of 05 kg and a velocity of 5ms moving to the