Acertain ion has a charge q > 0. the ion moves with a kinetic energy k in a circular path of radius r in the presence of a uniform magnetic field of magnitude b. (use any variable or symbol stated above as necessary.)
the transfer of heat continues untill the two bodies reach thermal equilibrium.
the heat can be transferred in via some processes like conduction, radiation and transfer of energy by changing of phase.
(1) conduction : it is the transfer of heat via a solid. heat can be transferred from one solid body to another.
(2) convection : it is the transfer of heat from one place to another by the movement of fluids. fluids include both liquids and gases.
(3) radiation : it is the process of transfer of heat through electromagnetic waves. it is generated by the thermal motion of particles. all matter having a temperature greater than absolute zero emits radiation.
newton's second law states that f = m x a (force is mass times acceleration). which example would have the greatest acceleration?
a) a 10 kg ball thrown with a 50 newton force
b) a 1 kg ball thrown with a 0.5 newton force
c) a 50 kg student launched by a 100 newton catapult
d) a 500 kg car accelerated by 1000 newtons from the engine
let's calculate each acceleration, from m = f/a:
a) 50n/10kg = 5 m/s^2
b) 0,5n/1kg = 0.5 m/s^2
c) 100 n/50kg = 2m/s^2
d) 1000n/500kg= 2m/s^2.
so the answer is option a.
really hope this
recall the force applied to a spring and its extension/compression:
f = kδx
δx is the change in the spring's length (measured from its original length).
x = 0.7 m
x₀ = 0.4 m
δx = x-x₀ = 0.7 m - 0.4 m = 0.3 m
f = 23 n
substitute and solve for k:
23 = k×0.3k = 7.67 n/m
is the sum of potential energy and kinetic energy. hope it =^-^=