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What mass of water at 26.0 °C must be allowed to come to thermal equilibrium with a 1.69-kg cube of aluminum initially at 1.50 102 °C to lower the temperature of the aluminum to 74.6 °C? Assume any water turned to stream subsequently recondenses.
Neutron stars consist only of neutrons and have unbelievably high densities. Find the density of such a star
q1. two identical 30 rm g particles each carry 3.0 rm mu c of charge. one is held fixed and the other is placed 1.0 rm
An alpha (?) particle is traveling at a speed v = 6.70x105 m/s in a west to east direction. What is the radius of curvature for the alpha particle as it continues through the magnetic field
The athlete shown in the figure rotates a 1.00 kg discus along a circular path of radius 1.07 m. find the magnitude of the maximum radial acceleration of the discus
A person who weighs 645 N is riding a 94.9 N mountain bike. what is the area of contact between each tire and the ground
A 3.9 kg block originally at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 18 N.
A rope of mass M and length L0 lies on a frictionlesstable with a length 'l' initially hanging ove theedge. How fast is the rope moving
A carpenter uses a tape measure to measure the lenght of one side of a room. However , a large bookcase on one side of the room prevents him from measuring the full lenghth. Is this random or systematic error
A bullet is fired from a rifle that is held 1.69 m above the ground in a horizontal position. Calculate the time it takes for the bullet to strike the ground
Neglect air resitance. Find rocket's kinetic energy when the rocket is 1000 km above Earth's surface. Illustrate what is the max heigh that the rocket reaches.
Quarks carry spin 1/2. Three quarks bind together to make a baryon (such as the proton or neutron); two quarks (or more precisely a quark and an anti-quark) bind together to make a meson (for example the pion or the kaon). Suppose the quarks are i..
A 4 kg fish swimming 3 m/s swallows an absent minded 2 kg fish at rest. What is the speed of the large fish instantly after lunch.
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