Two strings with linear densities of 5 g/m are stretched overpulleys, adjusted to have vibrating lengths of 50 cm, and attached to hanging blocks. Theblock attached to string 1 has a mass of 20 kg and the block attached to string 2 has massM. Listeners hear a beat frequency of 2 Hz when string 1 is excited at its fundamentalfrequency and string 2 is at its third harmonic. Required:
What is one possible value for mass M?

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

i think the answer is a and b

i wish you luck