The water from a fire hose follows a path described by y equals 4.0 plus 0.8 x minus 0.40 x squared (units are in meters). if v subscript x is constant at 5.0 m/s, find the resultant velocity at the point (2.0 comma 4.0 ). find the magnitude of the velocity of the water at the point (2.0 comma 4.0 ). the magnitude is approximately 6.4 m/s. (type an integer or decimal rounded to one decimal place as needed.) find the direction of the velocity of the water at the point (2.0 comma 4.0 ). enter an angle theta such that 0 degrees less than or equals theta less than 360 degrees . select the correct choice below and fill in any answer boxes in your choice. a. the direction is approximately nothing degrees . (round to the nearest whole number as needed.) your answer is not correct. b. the answer is undefined.

it is easily magnetized.

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:

think its the third option

there are no contact forces mentioned on the list of choices that you've provided.