Cue the
as
O Billiard Dall
Inhally at rest
is given a sharp
impulse by
hold htroontally a
distance h above
centre une
shown in the
figure below. The
leaves the
with a speed v
and because of it foccard
it foncord English (backward slipping) enventually
acquires a final speed 917 o . Shown that no 415R,
where
the nodus
of
He ball
(8 mark)
ball
R IS​

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system