Physics, 31.07.2019 20:30 puppylover72
Awatt is a unit of energy per unit time, and one watt (w) is equal to one joule per second ( j⋅s−1) . an 80.0 w incandescent lightbulb produces about 8.00% of its energy as visible light. assuming that the light has an average wavelength of 510.0 nm, calculate how many such photons are emitted per second by an 80.0 w incandescent lightbulb.
Answers: 2
Physics, 22.06.2019 09:20
Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers
Answers: 1
Physics, 22.06.2019 10:30
Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.
Answers: 1
Physics, 22.06.2019 21:30
Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.
Answers: 3
Awatt is a unit of energy per unit time, and one watt (w) is equal to one joule per second ( j⋅s−1)...
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