Quiz (Intermediate Level)

A spherical object falls through water at constant speed. Three forces act on the object.

Which diagram, showing these three forces to scale, is correct?

• 
• 
• 
• 

A radio-controlled toy car travels along a straight line for a time of 15s.

The variation with time t of the velocity v of the car is shown.

What is the average velocity of the toy car for the journey shown by the graph?

• –1.5ms^–1

• 0.0ms^–1

• 4.0ms^–1

• 4.5ms^–1

The acceleration of free fall on Pluto is 0.66ms–2.

An object weighs 6.0N on Earth.

What would this object weigh on Pluto?

• 0.40N

• 0.93N

• 4.0 N

• 39N

A student wishes to measure a distance of about 10cm to a precision of 0.01cm.

Which measuring instrument should be used?

• Screw gauge

• micrometer

• tape measure

• vernier calipers

A pendulum bob is held stationary by a horizontal force H. The three forces acting on the bob are

shown in the diagram.

The tension in the string of the pendulum is T. The weight of the pendulum bob is W. The string is held at an angle of 30° to the vertical.

Which statement is correct?

• H = T cos 30

• T = H sin30

• W = T sin30

• W = T cos 30

Number of Significant Digits: 0.06300

• 1

• 2

• 3

• 4

Which law of thermodynamics states that absolute zero cannot be reached?

• Ist

• 2nd

• 3rd

• None of above

Maxwell-Boltzmann law is for the

• Distinguishable particles

• Indistinguishable Particles

• Particles with half integral spin

• Particles with integral spin

Fermi-Dirac statistics is for the

• Distinguishable particles

• Symmetrical Particles

• Particles with half integral spin

• Particles with integral spin

Phase space is a ________

• 3 Dimensional Space

• 4 Dimensional Space

• 5 Dimensional Space

• 6 Dimensional Space