Answers: 2
Physics, 21.06.2019 19:00
Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?
Answers: 2
Physics, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
Answers: 1
Physics, 22.06.2019 07:00
We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation
Answers: 3
Physics, 22.06.2019 18:30
Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
Answers: 1
Agolf ball and bowling ball are rolling at the same speed. which has the greater momentum?...
Mathematics, 30.07.2020 14:01
English, 30.07.2020 14:01
Chemistry, 30.07.2020 14:01
English, 30.07.2020 14:01
Spanish, 30.07.2020 14:01
Health, 30.07.2020 14:01
Social Studies, 30.07.2020 14:01
Physics, 30.07.2020 14:01
Computers and Technology, 30.07.2020 14:01
Mathematics, 30.07.2020 14:01
Mathematics, 30.07.2020 14:01
Mathematics, 30.07.2020 14:01
Mathematics, 30.07.2020 14:01
Mathematics, 30.07.2020 14:01