Ch 8
How much force is exerted over a given area.
Pressure
The temperature of two objects in physical contact with each other is the same.
Thermal Equilibrium
In simple harmonic motion the restoring force is proportional to __________.
displacement
Oscillating electric and magnetic fields.
Electromagnetic Radiation / EM waves
The charge of an electron.
e = 1.602 x 10^-19 C
The weight of the fluid displaced.
Buoyant Force
Name two ways in which energy can be transferred to or from a substance.
Heat and work
Transverse
Low to high ......
bend close by!
Like charges _____.
Repel
Pressure applied to a fluid in a closed container is transmitted equally to every point of the fluid and to the walls of the container.
Pascals Principle
How much energy will it take to raise the temp of 20 g of water from 35oC to 55oC
1.6x10^3 J
The relative motion between the source of waves and an observer creates an apparent frequency shift.
The Doppler Effect
This lens always produces upright, virtual images.
Diverging
What is the current in a circuit with an equivalent resistance of 15 Ohms and a voltage drop of 3 V?
I = .2 Amps
Swift-moving fluids exert ____ pressure than slower-moving fluids
Less
Energy that is transferred from higher temperatures to lower temperatures.
Heat
A spring with a spring constant of 4000 N/m bounces up and down after being attached to a mass of 500 kg. What is the frequency of this motion?
f = .45 Hz
This occurs when the angel of incidence is larger than the critical angle.
Total Internal Reflection
What is the electric force acting on q1 = 3 nC and q2 = 6nC, separated by a distance of 4m? Is this attractive or repulsive?
F = 1.01 x 10^-8
Repulsive
A rectangular raft has a mass of 600kg. It is 3.0 m long, 1.0 m wide. How deep will the raft sink in the water? Density of water = 1000kg/m3
0.2 meters
What is the total energy required to melt 10 kg of -40°C ice and raise its temperature to 40°C?
Cice = 2090
Ch20 = 4186
L = 333000
5.84x10^6 J
An open-ended organ pipe has a length of 20 cm. What is it's 2nd harmonic if the speed of sound in air is 334 m/s?
f2 = 1670 Hz
Find the image distance and size if you place a 10 cm tall object 24 cm from a converging lens with a focal length of 10 cm.
q = 17.14 cm
h' = -7.14 cm
An electric field of 6000 N/C is produced by a test point charge of 4nC. For this E field, what is the distance between the charge and test point?
r = .077 m