Physics, 20.01.2020 21:31 dathanboyd
Sound wave a delivers 2 j of energy in 2 s. sound wave b delivers 10 j of energy in 5 s. sound wave c delivers 2 mj of energy in 1 ms. rank in order, from largest to smallest, the sound powers of pa, pb, pc of these three waves.
Answers: 1
Physics, 22.06.2019 09:40
(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)
Answers: 1
Physics, 22.06.2019 13:10
Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above
Answers: 3
Physics, 22.06.2019 16:00
An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.
Answers: 1
Physics, 22.06.2019 16:20
How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit
Answers: 2
Sound wave a delivers 2 j of energy in 2 s. sound wave b delivers 10 j of energy in 5 s. sound wave...
Mathematics, 20.08.2019 00:00
History, 20.08.2019 00:00
History, 20.08.2019 00:00
Biology, 20.08.2019 00:00
Mathematics, 20.08.2019 00:00
Mathematics, 20.08.2019 00:00
Social Studies, 20.08.2019 00:00
Mathematics, 20.08.2019 00:00
English, 20.08.2019 00:00
Mathematics, 20.08.2019 00:00