Help im confused

Explanation:

We cannot give you the answer directly as we do not have her velocity calculated from Problem 1

Let's call that velocity v

when she jumps, her initial horizontal velocity is vcos45,

so the time needed to cross the horizontal distance is

t = d/v = 10/vcos45

The initial vertical velocity will be vsin45

now we can plug into the vertical analysis

h = h₀ + v₀t + ½at²

h = 2.5 + (vsin45)(10/vcos45) + ½(-9.81)(10/vcos45)²

which reduces to

h = 2.5 + 10tan45 - 4.905(100)/(v²cos²45)

h = 2.5 + 10(1) - 490.5/(0.5v²)

h = 12.5 - 981/v²

plugging in the initial leap speed, we get a value for h

If h is positive, it means she is still above the water line when she crosses the far shore line

If h is negative, it means she has splashed into the water before she crosses the far shore line.

setting h to zero, meaning she's at water level when she lands on the far shore, we can determine the critical launch speed.

0 = 12.5 - 981/v²

981/v² = 12.5

v² = 981/12.5

v = 8.86 m/s

If her launch velocity is greater than 8.86 m/s, she lands on the far shore.

If her launch speed is less than 8.86 m/s, she has a wet reception.

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:

heat the gas and measure the pressure