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The specific heat capacity of copper metal was determined using a simple styrofoam calorimeter. The average of three trials led to an experimentally determined value of 0.377 J/goC which differed by only 2.08 % from the theoretical value of 0.385 J/goC. Sources of error which may have contributed to this difference include heat loss during the transfer of the metal into the calorimeter, heat loss by the calorimeter itself and lack of precision of the balance and thermometer used in this experiment. Nevertheless, such a lower % difference suggests that the technique of simple calorimetry is a efficient, cost-effective way to determine the specific heat capacity of a metal.
Light in a transparent material (index of refraction 1.333) strikes the boundary with another transparent material (n = 1.010). compute the critical angle for total internal reflection
A 45.0-N force stretches a vertical spring0.250 m. What mass must be suspended form the spring so that the system will oscillate with a period of 2.50 s?
A wheel rotates about a horizontal axis. It has an outer radius R1 = 18.8 cm and mass M1 = 5.12 kg. What is the acceleration of the hanging weight after it is released
Which of the following sets of variables result in a linear graph when plotted? (Choose as many as two)
Three blocks of mass m1=1.0 kg, m2=2.0 kg, and unknown mass m3 are on a frictionless forizontal surface, What is the unknown mass m3
A motor has an armature resistance of 2.5 Ohms. If it draws 10 A when running at full speed and connected to a 100 V line, how large is the back emf?
A 200 gram ball is attached to a string that is 1 m long and swung in a vertical circle. What is the minimum veocity of the ball so that the string will not slack at the top
a helicopter moves in such a way that its position at any time is described by the horizontal and vertical equations x
In a physics lab, you attach a 0.200-kg air-track glider to the end of an ideal spring of negligible mass and start it oscillating. Find the spring force constant
the problem statement all variables and givenknown dataa 20 kg child jumps in the air to try to shoot free throws while
A traffic light, weighing 668N is hung from the center of acable of negligible weight that is stretched horizontally btween two poles that are 18.3m apart. What is the tension in the cable
This demonstration is more complicated because it involves a vector. For a rotating wheel, the direction of the angular momentum, , is found by curving the fingers of your right hand in the direction of the rotation, your thumb then points along .
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