An ore car of mass 35000 kg starts from rest and rolls downhill on tracks from a mine. at the end of the tracks, 17 m lower vertically, is a horizontally situated spring with constant 5.3 × 105 n/m.

Explanation:

Given

mass of car

Vertical displacement

spring constant

Considering we need to find out compression in the spring when it reaches to ground

Here Gravitational potential Energy is converted to kinetic energy which finally converts to Elastic Potential Energy

suppose x is the compression in spring

Potential Energy=mgh

Elastic potential energy

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )

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.