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Time intervals measured with stopwatch typically have anuncertainty of about 0.2s, due to human reaction time at the startand stop moments. What is the percent of a hand timed measurement of a. 5.0s b.50s c 5min?
For this experiment you will require a stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
A drop of unknown liquid is placed at the point on a glass surface where internal reflection is occurring at ? = 48°. What is the refractive index of the liquid
A diesel engine works at a high compression ratio to compress air until it reaches a temperature high enough to ignite the diesel fuel. find the temperature of the compressed air
What is the minimum area (in square meters) of the top surface an ice slab 0.251 m thick floating on fresh water that will hold up a 1060 kg automobile
A turntable of mass 5.01 kg has a radius of 0.129 m and spins with a frequency of 0.530 rev/s. What is its angular momentum? Assume the turntable is a uniform disk.
When nine people whose average mass is 88 kg sit down in a car, they find that the car drops 1.42 cm lower on its springs. What is the frequency of the car's vibration if its mass (empty) is 1700 kg
Two spherical objects with a mass of 5.35 kg each are placed at a distance of 2.35 m apart. How many electrons need to leave each object
A 10 kilogram block of metal measuring 12cm by 10 cm by 10 cm is suspended from a scale and immersed in water. What is the reading of the spring scale
Two small objects are hung, from a point, on strings 50 cm long. they each have mass .06 grams and are given equal charge, What is the magnitude of the charge on each object
The top of the spring is connected to a string of mass per unit length of 2:0 10??3 held under a tension of 80 N. What is the velocity of the pulse
Suppose that the current is used up as it moves through a resistor. The potential difference across the resistor is kept the same and V/I = R. how can the resistance of the resistor be constant
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
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