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Physics, 22.06.2019 18:00
By what primary heat transfer mechanism does the sun warm the earth?
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Physics, 22.06.2019 18:30
An electron in an x-ray machine is accelerated through a potential difference of 1.00 Γ 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?
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Physics, 22.06.2019 18:30
In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.
Answers: 2
Physics, 23.06.2019 02:30
Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?
Answers: 3
If the fuel he carries produces 36 kJ of heat per gram when it burns, how much fuel should he carry?...
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