A beam of protons in an accelerator incident on a metal plate carries a current of 150 ?A. How many protons strike the plate in 24.0 s?

a. 1.60E+5
b. 3.60E+9
c. 2.25E+16
d. 3.91E+13


c

Physics & Space Science

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In composition, the ________ planets have rocky materials like the asteroids

Fill in the blank(s) with correct word

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A method of expressing the accuracy of measured quantities is

a. metric prefixes. b. derived units. c. significant figures. d. conversion factors.

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On a winter day the temperature drops from –5°C to –15°C overnight. If a pan sitting outside contains 0.40 kg of ice, how much heat is removed from the ice for this temperature change?

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A cube of wood of density 0.64 g/cm3 is 10 cm on a side. When placed in water, what height of the block will float above the surface? (water density = 1.00 g/cm3)

a. 7.8 cm c. 2.2 cm b. 3.6 cm d. 6.4 cm

Physics & Space Science