Physics, 16.01.2020 04:31, Kingzion5775
Two marbles, one twice as massive as theother, are dropped from the same height. when they strike the ground, how does thekinetic energy of the more massive marblecompare to that of the other marble? 1.it has one-half the ke.2.it has twice the ke. correct3.it has 4 times the ke.4.it has the same ke
Answers: 3
Physics, 22.06.2019 07:10, ddswaggsoflyy3176
Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
Answers: 2
Physics, 22.06.2019 21:10, truelove9288
Which radioisotope is used in dating geological formations?
Answers: 3
Physics, 22.06.2019 23:40, redraider4915
Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)
Answers: 1
Physics, 23.06.2019 00:10, looloo273
An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b. what is the wavelength of the wave? c. what is the amplitude of the magnetic field? d. what is the intensity of the wave?
Answers: 3
Two marbles, one twice as massive as theother, are dropped from the same height. when they strike th...
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