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1. Discuss how a grandfather clock (a pendulum clock), accurate at 20oC, will run fast or slow on a hot day (say, 30oC)?
Knowing this, what other things in your home will run differently based on temperature?
Thermodynamics
2. Discuss how the conservation of energy law explain whys the temperature of a gas increases when it is quickly compressed, whereas the temperature decreases when the gas expands.
Give an example of where you would see this law in practice in your everyday life.
A truck covers 39.1 meter in 8.6 seconds while smoothly slowing down to a final speed of 2.8 m/s. Find what is the trucks acceleration
Recall from thermodynamics that if an object of mass m absorbs an amount of energy Q, its temperature will increase according to Q=mc(Tfinal-Tinitial), where c is th specific heat of the material.
A new circus act features a large frictionless cannon with an 2500 N/m spring mounted at the bottom of a long barrel which makes an angle of 37.0o with the horizontal. Find the speed of the acrobat when he reaches the top of the barrel. Use energy ..
A hole of radius r has been drilled in a flat, circular plate of radius R. Determine the moment of inertia for rotation about an axis through the centre of the plate
avocados and peaches are equally priced in SA. If consumers in both states maximize utility (and have identical preferences),
A 1000 kg car zooms around a circular bend with a radius of 100m at 20 m/s. What direction is the force in on the car
q1. a straight 2.60 m rod pivots around a perpendicular axis so that it can swing freely in a horizontal plane. jane
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.56 s, and the velocity of the car decreases to + 4.62 m/s. What is the car's displacement
a 5 minute sample count yielded 500 counts. a 5 minute background measurement gave 125 counts. assuming negligible
the record distance in the sport of throwing cowpats is 81.1 m. assuming the initial launch angle was 45deg and
A low-power laser used in a physics lab might have a power of 0.55 mW and a beam diameter of 2.6 mm. Calculate the average light intensity of the laser beam
When a beam of unpolarized light of intensity 2.4 X 10-4W/m 2 passes during a thin polarizing filter the transmitted light is linearly polarized in the direction 30 degrees from the x-axis. What is the intensity of the transmitted light?
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