Topic 1 (Uncertainty)
Topic 2 (Mechanics)
Topic 3 (Thermal)
Topic 4 (Waves)
Random!
100
What is the unit of charge?
Coulomb
100
Find the displacement of this graph:
30
100
What is the boiling point of water?
100C°
100
A mass on the end of a spring oscillates horizontally with a maximum displacement of 4.0 cm. The largest acceleration of the mass is 2.0 m⋅s−2. There are no energy losses. What is the magnitude of the acceleration of the mass when it has a displacement of 1.0 cm from its equilibrium point?
.50 m⋅s−2
100
Simple Harmonic Motion employs what type of motion?
Isochronous
200
How many significant figures are in the number?
1200.
4
200
Inertia is defined by which of Newton's Laws?
Newton's First Law; Every object will remain in a state of rest or in uniform motion in a straight line (constant velocity) unless acted upon by a net (unbalanced) force. This is really a restatement of Galileo's principle of inertia.
200
What is the difference between conduction, convection, and radiation?
- Conduction: energy transfer through particle-particle collisions and movement.
- Convection: energy transfer through the distribution and movement of a fluid (liquid or gas).
- Radiation: energy transfer through electromagnetic radiation that each body emits.
200
Which has a higher wavelength on the electromagnetic spectrum, infared or microwaves?
Infared
200
What is the unit for luminous intensity?
Candela, cd
300
What is the difference between precision and accuracy?
Accuracy: difference between measurement and true value.
Precision: is the variation of the measurement done repeatedly with the same method/device.
300
A ball is launched with an initial vertical velocity component of 20m⋅s− and initial horizontal velocity component of 25m⋅s−.
Determine how much time elapses until the maximum height is reached.
2.0s;
vy=uy+ayt
300
Two ice cubes of 15g each are taken from a freezer at −12∘C and placed in a cup containing 250g of water at room temperature, say 22∘C. Determine the final temperature of the mixture.
10.4
300
Unpolarized light of intensity I0 passes through a polarizer and then through an analyzer whose axis is rotated 30∘ from that of the polarizer. Determine the intensity of the light between polarizer and analyzer and the intensity of the light exiting the analyzer in terms of I0.
3I0/8
300
Which has a higher specific latent heat, Copper or Water?
Copper = 207
Water= 334
400
Calculate the value of the following:
(2.79 ± 0.02) m / (1.35 ± 0.01) s
(2.07 ± 0.03) m/s
400
A person pushes a car of mass 800.kg from rest through a distance of 20 m on a horizontal surface using a force of 400N. The car reaches a velocity of 3.0m⋅s.
- Determine the thermal energy dissipated due to the resistive forces.
- Determine the efficiency of the work done.
1. 8 kJ - 3.6 kJ = 4.4 kJ
2. 45%
400
What is the relationship between Pressure and Temperature, Temperature and Volume, and Pressure and Volume, respectively? (must define all three).
p ∝ 1/V; p1v1 = p2v2
V ∝ T(K); V1/T(K)1 = V2/T(K)2
p ∝ T(K); p1/T(K)1 = p2 /T(K)2
400
During a double slit experiment with slit separation 0.20mm, with screen distance 1.50m from the slits, a coherent monochromatic light source produces an interference pattern with an average separation between dark fringes is 0.45cm. Determine the wavelength and approximate color that was used.
6.0×10−7m; approximately orange.
400
What are coherent waves?
Two waves are said to be coherent if they have a constant phase difference and they are the same frequency.
500
Find the vector sum of two perpendicular forces F1 4.3 N [Left] and F2 5.8N [Up]
Magnitude : 7.2N
Direction: 53°
500
A video recording of a golf shot shows that the club head is travelling horizontally at a speed of 18m⋅s−1 when it strikes the ball at rest and the ball moves away horizontally with a speed of 30.m⋅s−1. The mass of the ball is 46g, and the mass of the club head is 400.g.
- Determine the velocity of the club head after impact.
- Using your answer to part 1 of this question, determine the energy dissipation during the interaction.
1. 14.55m⋅s−1
2. −1.76J
500
A weather balloon is filled with some 7.0×1025 hydrogen molecules, and at 18C∘ the balloon has a volume of 14m3. Find the pressure inside the balloon.
20,000 pascal, or 0.2 atm
500
A loudspeaker is placed near the open end of a pipe of length 400mm that is closed at the other end. The smallest resonant frequency is 215Hz. Determine the speed of sound in the pipe and calculate the next larger resonant frequency. Note that this is a common experiment used to measure the speed of sound, where a signal generator is used to slowly sweep upward from small to greater frequencies and those that resonate the air column are used (along with column length) to calculate c.
645 Hz
500
What forces do real gases have that ideal gases don't?
Inter-particle forces (London or Van der Waals).