3. A wave in a 12m rope is shown in a diagram in one second
l<- 12m
a) What is the wa...
Physics, 06.05.2020 23:19 bella122805
3. A wave in a 12m rope is shown in a diagram in one second
l<- 12m
a) What is the wavelength of this wave
b) If the frequency of the wave is 2 Hz, what is the wave speed?
Answers: 1
Physics, 22.06.2019 05:30
Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.
Answers: 1
Physics, 22.06.2019 07:10
Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?
Answers: 2
Physics, 22.06.2019 11:30
A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?
Answers: 2
Physics, 22.06.2019 15:40
If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false
Answers: 2
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Chemistry, 14.09.2020 15:01
English, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Physics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Biology, 14.09.2020 15:01
English, 14.09.2020 15:01
English, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
English, 14.09.2020 15:01
Chemistry, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Social Studies, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01
Social Studies, 14.09.2020 15:01
Mathematics, 14.09.2020 15:01