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Q. Two bars of identical mass are at 28 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J/(kg • C°). While identical amounts of heat are supplied to each, the glass bar reaches a temperature of 93 °C, while the other bar reaches 255 °C. What is the specific heat capacity of the other substance?
Q. a) At what angle does the target particle move after the collision? b) What are the final speeds of the two particles? c) What fraction of the initial kinetic energy is transferred to the target particle? An atomic nucleus of mass m travelling with speed v collides elastically with a target particle of mass 2.000m (at first at rest) and is scattered at 90.
A small, 300 {rm g} cart is moving at 1.30 {rm m/s} on an air track when it collides with a larger, 3.00 {rm kg} cart at rest. After the collision, the small cart recoils at 0.890 {rm m/s}.
What is the magnitude of the acceleration of the anvil. find the mass of the planet from this information.
The velocity of the wave traveling on a string is higher if you increase the length of the string (keeping the kind of string, and the tension of the string, unchanged)
A person does 100 joules of work of pulling back the string of the bow. What will be the original speed of a 0.5 killogram arrow when it's fired from the bow.
What is mass of the block of ice
What is the least coating thickness required
A 270 m wide river flows due east at a uniform speed of 2.30 m/s. A boat with the speed of 8.4 m/s relative to water leaves the south bank pointed in a direction 38o west of north. What is (a) magnitude and (b) direction of the boat's velocity rel..
find friction force that acts on the bear.
An electric field of 490000 N/C points due west at the certain spot. What is the magnitude of the force that acts on a charge of -8.3 C at this spot.
A barge of mass 5x 10^4 kg is pulled along the Erie Canal by two mules, walking along towpaths parallel to the canal on either side of it. The ropes harnessed to the mules make angles of 45° to the canal.
What is the physics behind everyday sayings
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice will be formed from 0°C water.
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