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An unknown substance has a mass of 0.125 kilogram and an initial temperature of 87.4°C. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kilogram of water initially at 29.2°C. The mass of the aluminum container is 0.150 kilogram, and the temperature of the calorimeter increases to a final equilibrium temperature of 32.0°C. Assuming no thermal energy is transferred to the environment; compute the specific heat of the unknown substance.
_________J/kg•°C
A ball of mass m makes a head-on elastic collision with asecond ball (at rest) and rebounds with a speed equal toone-fifth its original speed. What is the mass of the second ball
A 40.3-cm diameter disk rotates with a constant angular acceleration of 2.50 rad/s2. Find the linear velocity and tangential acceleration of P at t = 2.30 s
What minimum force is necessary to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.)
question asteroid 433 eros is one of the largest near-earth asteroids. for purposes of this problemassume it is
a charge of 2.0 micro coulomb is located in a uniform electric field of intensity nc. what is the magnitude of the work
A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA. If the beam is directed perpendicular to a flat surface, how many alpha particles strike the surface i..
so im really confused about this problem im not exactly sure where or how to start it can someone please help? consider
what will a spring scale read for the weight of a 58 kg woman in an elevator that moves as follows?a upward with
A 32 kilogram block slides with an initial speed of 10 m/s up a ramp inclined at an angle of 25 degree with the horizontal. determine the distance along the incline that the block slides before coming to rest
question1a 575g air-track glider attached to a spring with spring constant 14.0 nm is sitting at rest on a frictionless
0.45 kg of a metal at 90degreesC is added to 0.40 kg of whater at 20.0degreesC. If the final temp of the mixture is 26.0degreesC, what is the specific heat of the metal
an airplane has a mass of 27500 kg and takes off under the influence of a constant net force of 41000 n. what is the
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