Physics, 13.02.2020 20:15 sarinaneedshelp01
At a particular moment during a football game, the ball experiences a net force pointing due north. Which of the following best describes the velocity of the ball at that moment?
a) It points North
b) It points South
c) It is zero
d.) It could point north or south, but it couldn't be zero.
e.) It could point north or be zero, but it couldn't point south.
f.) It could point north, point south, or be zero.
Answers: 3
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Physics, 22.06.2019 11:20
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.
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An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.
Answers: 1
At a particular moment during a football game, the ball experiences a net force pointing due north....
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