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A: Explain why heat gains must be equivalent heat losses in your experiment.
B: Derive the equation you are going to use to determine the specific heat of a metallic ball.
A platinum resistance thermometer has resistances of 199.64 ? when placed in a 0°C ice bath and 266.19 ? when immersed in a crucible containing melting potassium. What is the melting point of potassium
A car's starter draws 50A from the car's battery when starting up. If the start up time is 1.5s, how much electrons pass a location in the circuit during the time
A speedboat moving at 38.0 m/s approaches a no-wake buoy marker 100 m ahead. What is the velocity of the boat when it reaches the buoy
the man and the platform together weigh 1200 N. The pulley can be modeled as frictionless. Elucidate how hard the man has to pull on the rope to lift himself steadily upward above the ground.
Assume bubbles formed on the surface of the objects that your were submerging. How would these bubbles affect the measurement of the density of the objects? Would the bubbles make the gauged densities too large, or too small? Describe.
A camera's zoom lens covers the focal-length range 38mm -138mm . You point the camera at a distant object and photograph it first at 38mm and then with the camera zoomed out to 138mm . Compare the sizes of its images on the two photos.
A copper plate has a length of 0.12 m and a width of 0.10 m at25 degrees C. What is the change in the area of the plate as aresult of the increase temperature
Calculate the ratio of the drag force on a jet flying at 899km/h at an altitude of 7.8 km to the drag force on a prop-driventransport flying at half that speed and altitude. The density ofair is 0.51 kg/m3 at 7.8 km and 0.73 kg/m3 at3.9 km.
A 5 kg ball is thrown upward with an initial speed of 30 meters per second. Suppose there is a constant air resistance of 25N opposing the motion during its entire up and down path. How long will it take to get to the highest point in its path? How h..
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
Suppose 145 moles of a monatomic ideal gas undergo an isothermal expansion from 1.00m^3 to 4,00 m^3, How much work is done by the gas during this expansion
two forces are applied to a stump by two tractors. one is a 150 n force to the east. the other is 100 n in a direction
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