An unstrained horizontal spring has a length of 0.34 m and a spring constant of 320 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes. Because of these charges, the spring stretches by 0.039 m relative to its unstrained length. Determine (a) the possible algebraic signs and (b) the magnitude of the charges.

1.41131 × 10⁻⁸ = q2

Explanation:

Given:

Length = 0.34m

Spring constant =320 N/m

Computaion:

Using coulomb law

Force applied on spring = (Spring constant)(spring stretch)

Force applied on spring = (320) (0.039) = 12.48N

Force applied on spring = q1q2² / r²

12.48 = (9 × 10⁹)q2² / (0.34+0.039)²

1.79263968 = (9 × 10⁹)q2²

1.99182187 × 10⁻⁸ = q2²

1.41131 × 10⁻⁸ = q2

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

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: