subject
Physics, 08.02.2021 14:50 jamine

A portable speaker is switched on. 600 J of energy is transferred from the chemical store in the battery to the thermal store of surroundings; 250 J by heating and
some by radiation (sound). How much energy is transferred by radiation?

ansver
Answers: 1

Another question on Physics

question
Physics, 21.06.2019 17:00
The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass
Answers: 1
question
Physics, 21.06.2019 22:30
What is the earliest point in the universe that we can observe? why can’t we see back further than this?
Answers: 2
question
Physics, 21.06.2019 22:40
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
Answers: 2
question
Physics, 21.06.2019 23:30
Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.
Answers: 1
You know the right answer?
A portable speaker is switched on. 600 J of energy is transferred from the chemical store in the ba...
Questions
question
Mathematics, 03.11.2020 03:10
question
History, 03.11.2020 03:10
Questions on the website: 13722367