argiewalls · Physics · Units 3 & 4

01 During a one-minute revision round: A passenger lurches forward when a car brakes because of

A loss of mass This does not satisfy the stated relationship.

B a forward engine force This does not satisfy the stated relationship.

C inertia The passenger tends to maintain velocity unless acted on by a net force.

D weight increasing This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Newtonian motion · answered at 1902 ms

02 For constant mass, the net force equals

A \(m/\vec a\) This does not satisfy the stated relationship.

B \(\vec p/t^2\) This does not satisfy the stated relationship.

C \(m\vec a\) Newton’s second law gives net force as mass times acceleration.

D \(mv^2\) always This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Dynamics · answered at 3706 ms

03 During a one-minute revision round: The double-slit interference pattern most directly demonstrates light’s

A sound speed This does not satisfy the stated relationship.

B electric charge This does not satisfy the stated relationship.

C rest mass This does not satisfy the stated relationship.

D wave behaviour Interference is characteristic of waves.

Written for icaijy.com · U4 · Models of light · answered at 6011 ms

04 Which response best completes this VCE-style item? A perfectly inelastic collision conserves

A kinetic energy but not momentum This does not satisfy the stated relationship.

B momentum but not kinetic energy Objects stick; momentum is conserved in isolation but kinetic energy is transformed.

C the speed of each object This does not satisfy the stated relationship.

D neither momentum nor energy This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Collisions · answered at 8572 ms

05 Which response best completes this VCE-style item? For constant mass, the net force equals

A \(mv^2\) always This does not satisfy the stated relationship.

B \(m\vec a\) Newton’s second law gives net force as mass times acceleration.

C \(m/\vec a\) This does not satisfy the stated relationship.

D \(\vec p/t^2\) This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Dynamics · answered at 12858 ms

06 Reducing uncertainty in position generally causes uncertainty in momentum to

A remain exactly fixed This does not satisfy the stated relationship.

B become classical This does not satisfy the stated relationship.

C increase Position and momentum obey an inverse uncertainty relationship.

D decrease to zero This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Uncertainty · answered at 16937 ms

07 During a one-minute revision round: The gradient of a displacement–time graph gives

A velocity Velocity is the rate of change of displacement.

B acceleration This does not satisfy the stated relationship.

C momentum This does not satisfy the stated relationship.

D force This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Motion · answered at 21819 ms

08 Which response best completes this VCE-style item? Moving a positive charge against an electric field generally

A removes its mass This does not satisfy the stated relationship.

B leaves potential energy necessarily zero This does not satisfy the stated relationship.

C increases electric potential energy Work against the electric force stores potential energy.

D decreases its charge This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Electric potential · answered at 28334 ms

09 Which response best completes this VCE-style item? The double-slit interference pattern most directly demonstrates light’s

A wave behaviour Interference is characteristic of waves.

B sound speed This does not satisfy the stated relationship.

C rest mass This does not satisfy the stated relationship.

D electric charge This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Models of light · answered at 32020 ms

10 Above threshold, maximum photoelectron kinetic energy increases with

A surface area only This does not satisfy the stated relationship.

B exposure time only This does not satisfy the stated relationship.

C intensity only This does not satisfy the stated relationship.

D frequency \(K_{max}=hf-\phi\).

Written for icaijy.com · U4 · Photoelectric effect · answered at 35814 ms

11 A student is checking a worked solution. Near Earth, gravitational potential energy change is

A \(mv\) This does not satisfy the stated relationship.

B \(ma\Delta h\) This does not satisfy the stated relationship.

C \(m/gh\) This does not satisfy the stated relationship.

D \(mg\Delta h\) For a uniform field near Earth, ΔUg = mgΔh.

Written for icaijy.com · U2 · Energy · answered at 41518 ms

12 During a one-minute revision round: A photon is the exchange particle for the

A strong interaction This does not satisfy the stated relationship.

B weak interaction This does not satisfy the stated relationship.

C electromagnetic interaction Photons mediate electromagnetic interactions.

D gravitational interaction in the Standard Model This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Standard Model · answered at 45553 ms

13 Which response best completes this VCE-style item? Rest energy is given by

A \(E_0=m/c^2\) This does not satisfy the stated relationship.

B \(E_0=mc^2\) Mass has rest-energy equivalent mc².

C \(E_0=mc\) This does not satisfy the stated relationship.

D \(E_0=mv\) This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 49778 ms

14 Which response best completes this VCE-style item? The area under a velocity–time graph gives

A displacement Integrating velocity over time gives displacement.

B force This does not satisfy the stated relationship.

C power This does not satisfy the stated relationship.

D acceleration This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Motion · answered at 53614 ms

15 A student is checking a worked solution. Refraction occurs because light

A changes speed between media A speed change produces a direction change except at normal incidence.

B becomes charged This does not satisfy the stated relationship.

C changes frequency at the boundary This does not satisfy the stated relationship.

D loses all energy This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Light · answered at 55998 ms

16 Which response best completes this VCE-style item? Impulse equals the change in

A power This does not satisfy the stated relationship.

B kinetic energy This does not satisfy the stated relationship.

C velocity only This does not satisfy the stated relationship.

D momentum \(J=\Delta p\).

Written for icaijy.com · U3 · Momentum · answered at 58442 ms

17 Which response best completes this VCE-style item? The centripetal force on a satellite in circular orbit is supplied by

A its engines continuously This does not satisfy the stated relationship.

B air resistance This does not satisfy the stated relationship.

C a magnetic force This does not satisfy the stated relationship.

D gravity Gravity points towards the orbital centre.

Written for icaijy.com · U3 · Circular motion · answered at 60000 ms

18 A student is checking a worked solution. For constant mass, the net force equals

A \(mv^2\) always This does not satisfy the stated relationship.

B \(\vec p/t^2\) This does not satisfy the stated relationship.

C \(m\vec a\) Newton’s second law gives net force as mass times acceleration.

D \(m/\vec a\) This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Dynamics · not answered before time expired