An electron has been accelerated by a potential difference of 100 V. If its position is known to have an uncertainty of 1 nm, what is the percent uncertainty (Dp/p × 10^0) of the electron?
a. 1%
b. 2%
c. 10%
d. >>10%
e. 5%
A
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Fill in the blank(s) with correct word
A person makes ice tea by adding ice to 1.8 kg of hot tea, initially at 80°C
How many kilograms of ice, initially at 0.00°C, are required to bring the mixture to 10°C? The heat of fusion of ice is 334 kJ/kg, and we can assume that tea has essentially the same thermal properties as water, so its specific heat is 4190 J/(kg?K). A) 1.0 kg B) 1.2 kg C) 1.4 kg D) 1.5 kg E) 1.7 kg
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a. 41 N b. 0.29 kN c. 0.24 kN d. 0.20 kN e. 0.37 kN