Which transformation of energy takes place when a slingshot launches a stone? (pe stands for potential energy.) a. elastic pe to gravitational pe b. elastic pe to kinetic energy c. gravitational pe to elastic pe d. kinetic energy to gravitational pe

B. elastic PE to kinetic energy

Explanation:

As we know that when we stretch the slingshot to some distance then the elastic energy is stored into the sling which is given as

here we know that

k = elastic constant of the sling

x = stretch in the sling

now when we release the sling from that position then the shot will move with certain kinetic energy from it and sling comes to its natural length

so here we can say that elastic potential energy of the sling will convert into kinetic energy of the shot here so correct answer will be

B. elastic PE to kinetic energy

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:

the answer is b i think