As climber of mass 80kg is on a steep rock face. The force X that the rock exerts on the climber is at angle of 50° to the vertical. Y,the other force on the climber, keeps him in equilibrium and is provided by as rope at angle of 40° to the vertical. a) draw as sketch to show the forces acting on the climber
b) from your sketch of the forces, sketch a triangle of forces to show equilibrium
​

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:

this means that the temperature of both substances will be equal

does anyone know or what?