In order to produce a wave that travels along a string at a speed higher than 3 meters per second under the same conditions, the students would need to use string that has a linear density– greater than 8 grams per meter. between 8 grams per meter and 1 gram per meter. less than 1 gram per meter. greater than 1 gram per meter.
Answers: 3
Physics, 22.06.2019 12:30
Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?
Answers: 1
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
Physics, 22.06.2019 19:50
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
In order to produce a wave that travels along a string at a speed higher than 3 meters per second un...
Computers and Technology, 27.06.2019 19:30
Chemistry, 27.06.2019 19:30
Mathematics, 27.06.2019 19:30
Chemistry, 27.06.2019 19:30
Physics, 27.06.2019 19:30