A12 kg sled is moving at a speed of 3.0m/s. at which of the following speeds will the sled have four times as much kinetic energy

Given that

m = 12 kg ,

speed (v) = 3 m/s  

kinetic energy ( KE) = 1/2 × m × v²   Joules

                                  = 1/2 × 12 × 3²

                                  = 54 J

If we have the options we can find the speed by keeping the speed in above formula. ( 54 ×  4 =216 J) for the speed of m/s

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:

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.