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An unknown substance has a mass of 0.125 kg and an initial temperature of 94.7. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kg of water initially at 26.6 degrees celcius. The mass of the aluminum container is 0.150 kg, and the temperature of the calorimeter increases to a final equilibrium temperature of 32 degrees celcius. Assuming no thermal energy is transferred to the environment, calculate the specific heat of the unknown substance.
a 13-g sample of an unkown metal is heated to 96.0 degrees C. What is the specific heat of the unknown metal
A 0.015 kg bullet traveling horizontally at 400.2 m/s strikes a 4.1 kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.2 m, how far from the table does the block hit the floor.
A particle starts from the origin at t=0 with a veolicty of 6.0i m/s and moves in the xy plane with a constant acceleration of (-2.0i+ 4.0j). how far is it from the origin
The height of a helicopter above the ground is given by h = 3.15t3, How long after its release does the mailbag reach the ground
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
An astronomical telescope uses an objective power of +1.280 D. If the length of the telescope is 80.000 cm, what are power of the eyepiece
A cyclotron designed to accelerate protons has a magnetic field of magnitude 0.590 T over a region of radius 1.40 m, What is the cyclotron frequency
A flywheel with a radius of 0.300m starts from rest and accelerates with a constant angular acceleration of 0.600rad/s2. Compute the magnitude of the tangential acceleration
A wheel moves forward for 2 seconds making two complete revolutions. The wheel rotates during an arc length of 8.2 meters.
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
The figure shows the light intensity on a screen behind a double slit. The slit spacing is 0.20 mm, What is the distance from the slits to the screen
At room temperature (20C) the area of a hole in a sheet of material is 5.505 cm2. What is the thermal coefficient of linear expansion for the material
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