A68 kg rock climbers 320 m above the ground the sun is down or up at 1.5 m/s using the ground as a reference point determine the total mechanical energy of

213.5 kJ

Explanation:

Mechanical energy= kinetic energy + potential energy= KE+PE= where m is the mass of rock climber, v is the velocity, g is acceleration due to gravity and h is the height.

By substitution where 68 Kg is m, 320 m is h, 1.5 m/s is v and 9.81 is g then

Mechanical energy=

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

answer(20) psi;