Study Guide 6
Which quantity and unit are correctly paired?
a. electric field strength and N/C
b. Electrostatic force and electrons
c. Electricity and Coulombs
d. Electric field strength and E
True or false: potential difference (∆V) is proportional to current. Explain.
Fruse.
a. TRANSVERSE travelling waves: movement of oscillating particles is ________________ to the direction of wave propagation.
b. LONGITIDINAL travelling waves: movement of oscillating particles is ______________ to the direction of the wave propagation.
surfs up, dude
Describe what is happening in terms of waves when a beat frequency is heard.
Dance to the beat
Identify the following decay types:
56/26 Fe--> 56/27 Co + ??
89/39 Y --> 89/38 Sr + ??
Which of the following is false about electric field lines?
a. Electric field lines cannot cross
b. Electric field lines are always straight
c. Electric field lines point away from the positive charge
d. Electric field lines show how a proton would move in an electric field
Sorry :/
When R is small:
a. The voltage decreases with a constant current
b. The current decreases with a constant voltage
c. The current increases with a constant voltage
d. The voltage increases with a constant current
e. This is a trick question, buddy.
Define variables:
The _____________ is the time required to oscillate through one complete cycle
The ______________ is the physical length of one full disturbance.
**Keep velocity in mind!
v = d/T = λ/T = ƒ/ λ
This is a really good way to understand concepts!!!
What is the beat frequency of two waves with frequencies of 258 Hz and 262 Hz?
I believe in you
A nucleus has 11 protons and 12 neutrons. What is its (a) atomic number? (b) atomic mass number?
Because of symmetry, the electric field near a plate charge only has a component that is ______ to the plate. The electric field near the charged plates is ________.
Error 404
The resistivity of axoplasm in a squid axon is 0.30 Ω·m. What is the length of a squid axon having a resistance of 1.5 3 105 Ω and a radius of 0.025 cm? (An axon is a long projection of a neuron cell).
Are the following interferences constructive or destructive?
a. Two small troughs meet
b. A small trough and a large crest meet
c. A rarefaction of a large magnitude meets a compression of a large magnitude
d. A small compression meets a large compression
constructive vs destructive??
Find the fundamental frequency of a flute (one end open, one end closed) of length 30 centimetres filled with helium (v=927m/s).
Wavyyy
Which one of the following statements is true for β2 decay?
(a) The mass number increases by 1.
(b) The mass number decreases by 1.
(c) The atomic number increases by 1.
(d) The atomic number decreases by 1.
Which one
An alpha particle (charge +2e, mass 6.6e-27kg) enters a uniform field. The initial speed is 3.1e14nm/s and the magnitude of the field is 2.1e5N/C.
a. Sketch the path of the alpha particle and determine where in the path the speed would be at a minimum.
b. What is the minimum speed?
You're doing great!
a. The resistance between two well-separated points on the human body is about 1.5e3 Ω. If a potential difference of 94000mV is applied across these points, how much current is generated?
b. When the skin is wet, the resistance drops to 5.0x10^2 Ω. What will happen to the current? Calculate the new current using the same potential difference.
zzzzaapppppp!
A traveling wave is described by the equation y(x,t) = (0.003)cos(20x + 200t), where y and x are measured in meters and t in seconds. What are the amplitude, frequency, wavelength, speed, and direction of travel for this wave?
math Hz me
An excited physics student screams for joy after passing her quiz. Assuming the intensity of her vocal projection is 20 W/m2 (heard from a distance of 80 m), determine the intensity that the quiz coordinator hears (assuming she is standing at a distance of 4 m from Ashley).
The helium isotope 6/2 He is unstable.
(a) What kind of decay would it likely undergo?
(b) What would be the daughter nucleus?
(c) Write the nuclear decay equation for this process.
Hehe
An aerosol paint droplet with mass 2.04g quickly enters a region of a uniform electric field (with magnitude 3.98e4 N/C [down] and length 0.29mm). It enters with a horizontal velocity of 18 m/s and a charge of +2.5e-10 C.
a. What acceleration does the droplet experience between the two plates? (ignore gravity)?
b. Determine the time spent by the droplet in the electric field region.
Rock 'n' roll, pal!!!
Describe all the similarities and differences you can possibly think of for series vs. parallel circuits
You nailed it
A mass attached to a spring is pulled 35.0 cm to the right from equilibrium and released at t=0. It makes 35 complete oscillations in 14500 ms. What are the amplitude and period of the resulting cosine function that describes the position of the mass as a function of time?
convert! those! units!
5 cats are meowing at 60 dB each as measured at a distance of 1.5m.Find the resulting intensity level of their meowing at a distance of 1m away from the cat choir if they all meow simultaneously.
Meow
The initial activity of a sample of 9/6 C, which has a half life of 0.127 s, is 1.40x10^12 Bq. 6
(a) What is the average lifetime of a nucleus of 96C?
(b) How many nuclei are present in the sample initially?
(c) What is the activity of the sample after 1.0 s?
Omg you did it