The speed of sound in seawater is known to be 1500 m/s. A sound wave with a frequency of 3 kHz is produced under water. Calculate the wavelength of this sound
wave. (V = 1)

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

the maxium height is 34m/s

i would say