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A block of ice at 0C is added to a 59.8 gram aluminum calorimeter cup that holds 333gram of water at 17.7C . If all but 6.52 gram melts, find what was the original mass of the block of ice?
q1. assume that you are walking perpendicularly with a velocity of 0.90 ms toward a stationary plane mirror. what is
Describe two different energy alternatives to fossil fuels in detail. Discuss how they work, how they compare with fossil fuels, and their relative advantages and disadvantages.
A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 ? 10-8, What must be the diameter of the wire
A 47.0 g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of 25.6 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. J (b) What is its speed when it is 10.0 m below..
Suppose two highly precise, identical clocks are synchronized and one clock is placed on the North Pole, how much will the clocks differ in time
two blocks are sliding along a frictionless track. block a mass 4.17 kg is moving to the right at 1.60 ms. block b mass
one point-like charge of -20 nc is placed 3 cm away from a very large planar sheet of charge. the surface charge
A uniform rod of mass 3.20×10?2 and length 0.430 rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.190 , are mounted so that they can slide along the rod.
two spherical objects with a mass of 8.05 kg each are placed at a distance of 2.31 m apart. how many electrons need to
A 5.0 kg scientific instrument, an air sampler, is tied to a weather balloon by a rope. If the upward acceleration of the balloon is 3.4 m/s2, find the tension in the rope
A computer is reading data from a rotating CD-ROM. At a point that is 0.030m from the center of the disk, centripetal acceleration is 120m/s2. What is the centripetal acceleration at a point that is 0.05 m from the center of disc.
the planet venus requires 225 days to orbit the sun which has a mass m 1.99 x 1030 kg in an almost circular
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