Question 4426:

• NECO 2002

A body of mass M₁ moving with a velocity U collides with a stationary body of mass M₂ and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V?

A. M₁ + M₂ ÷ M₁U
B. M₂U ÷ M₁ – M₂
C. M₁U ÷ M₁ – M₂
D. M₁U ÷ M₁+ M₂
E. M₂U ÷ M₁ + M₂

Question 4427:

• NECO 2002

According to the Kinetic Theory, what does NOT occur when the temperature of a constant volume of gas is increased?

A. A decrease in the mean speed kinetic energy of the molecules
B. An increase in the mean speed of the molecules
C. An increase in the momentum change at each collision.
D. An increase in the number of collisions per second
E. An increase in the pressure exerted by the gas.

Question 4428:

• NECO 2002

The wavelength of a stationary wave is 36.0cm. What is the distance between a node and the next anti-node?

A. 6.0cm
B. 9.0cm
C. 18.0cm
D. 360cm
E. 72.0cm

Question 4429:

• NECO 2002

An a.c. generator can be converted into a d.c. generator by replacing ____________

A. The slip rings with split-ring commutators
B. The slip rings with armatures
C. The split-rings with slip rings
D. The split-rings with brushes
E. The brushes with slip-ring commutators.

Question 4430:

• NECO 2002

It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the ____________

A. Crompton effect
B. De Broglie’s laws
C. Frank-Hertz experimental law
D. Heisenberg’s uncertainly principle
E. Wave-particle paradox