Two identical objects move with speeds of 5.0 m s and 25.0 m s. what is the ratio of their kinetic energies?

The formula for kinetic energy is KE = 0.5mv^2

Where m is the mass

And v is the velocity

Since the two object are identical so their mass are equal

KE1/ KE2 = 0.5m(v1)^2/ 0.5m(v2)^2

KE1/ KE2 = (v1)^2/ (v2)^2

KE1/ KE2 = (5)^2/ (25)^2

KE1/ KE2 = 1/25

KE1:KE2 = 1:25

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 temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.