Homework Statement
What is the mass defect of the 7Li nucleus (A = 7)?
Homework Equations
mass of 7Li nucleus per atomic table is 7.016004 u
N = A-Z or #neutrons = 7-3 = 4
computed mass of proton and neutrons in nucleus = 3 p*mass of p + 4n *mass of n
mass of proton = 1.00726 u
mass of...
Ok..but what do I do with the equation..I can plug in values for d1 and d2 but am still left with m unknown as well as frequency...I am getting confused. Thanks for that explanation on the reasoning.
Thank you again..I am guessing that di is the sum of the path of the signal to the plane plus the elevation back down to Roger and that d2 is the path from the station straight to the ship. What do I do with m since it is unknown? I am concerned about negative signs here and am assuming I use...
Homework Statement
Roger in ship offshore listening to baseball game on his radio. He notices there is destructive interference when seaplanes from nearby Coast Guard station fly directly overhead at elevations of 777 m, 970 m, and 1163 m. The broadcast station is 98 km away. Assume there is...
I do not know if the answer is wrong but this is for web assign and I am trying to understand why they might be right. Can you tell me how you solved the problem?
I is the tube length
the angular magnification is not in cm
N is the normal point for the eye - 25 cm
d is the distance to the lens (d image is distance of image to lens and d object is distance of object to lens)
Homework Statement
A microscope has an eyepiece that gives an angular magnification of 5.25 cm for a final image at infinity and an objective lens of focal length 1.45 cm. The tube length is 16.1 cm.
a - What is the transverse magnification due to the objective lens alone?
b - what is the...
I understand most of what you are saying and drew a diagram. Would you reclarify something for me: Y is equal to B1 as they are alternating angles on the diagonal of the parallelogram. Then B2 equals x (opposite alternating angle on diagonal). How do I find x as I am not certain of the value...
I made a drawing and can get the first angle of refraction from Snells Law into the prism. Then I have trouble from that point on determining the angle of exit from the right side of the prism. Does the sin of angle of entry into prism times n for prism equal the sin of angle of exit on the...
I know that this equation can give me the D, the angle of minimum deviation, but I am not certain how that is important. I do not understand how to use the angle of incidence here.
Homework Statement
Equilateral triangle prism (angles all 60 degrees) made of crown glass. Index of refraction ranges from 1.486 for longest visible wavelengths to 1.556 for the shortest. What is range of refraction angles for the light transmitted into air through the right side of the...
Homework Statement
A circular conducting coil of radius 2.8 cm is placed in a uniform magnetic field of .900 T with the plane of the coil perpendicular to magnetic field. Coil rotated 180 degrees about the axis in .222 seconds. If the coil is made of copper with a diameter of .900 mm, what...
Thanks..I got the 1520 in that other example by using the 1.013 e 5number to convert (I had used 1.0 e 5 earlier). Now how do I find the internal energy and total heat flow of the total process? I know that change in internal energy = Q-W. If I use change in U = 3/2*nRdeltaT and substitute PV...
No. But in a similar problem with intervals on y axis to be 1 atm and values of lines on x axis to be 5, 10, and 20 L, the answer is -1520 Joules. I can't get this answer by adding the areas under B-C and C-D to get work (A-B is 0 since it is isochoric). Any ideas?
Homework Statement
. Suppose a monatomic ideal gas is changed from state A to state D by one of the processes shown on the PV diagram below, in which each interval on the vertical (P) axis corresponds to 2 atm, and the values of the lines on the horizontal (V) axis equal 1 L, 2 L, and 4 L...
Homework Statement
The volume of air taken in by warmblooeded vertebrate is 250 L/day at standard temperatutre and pressure (0 Degrees C and 1 atm). If air in lungs is at 43 degrees C under pressure of 440 mm HG and we assume vertebrate takes in average volume of 100cm cubed per breath at...
Homework Statement
An intensity level change of +2.00 dB corresponds to what percentage change in intensity!
Homework Equations
B = dB = 10 log (I/Io)
The Attempt at a Solution
2.00 dB = 10 log (I/Io)
0.2 = log (I/Io)
I/Io = 10e0.2 = 1.585
Assuming Io = 1, then percentage...
Homework Statement
In a factory, 3 machines produce noise with intensity levels of 76 dB, 82 dB, and 85 dB. With all three running, what is the intensity level?
Homework Equations
B = 10 log (I/Io)
The Attempt at a Solution
B = 10 log (10e7.6 + 10e8.2 + 10e8.5)
I do not know...
Homework Statement
A bat emits a chirping sounds of frequency 67 kHz while hunting for moths to eat. Suppose the bat emits a chirp that lasts for 1.00 ms adn then is silent while it listens for the echo. If the beginning of the echo returns just after the outgoing chirp is finished, how...
Homework Statement
By what percentage does the density of water increase at a depth of 3.7 km below the surface?
(change in p/p)
Homework Equations
P = pgh where p = density
p of water = 1000 kg/m cubed
h = 3.7 km = 3700 m
bulk modulus of water (b) = 2 e 9
The Attempt at a Solution
b = -...
Homework Statement
What is the pressure difference required to make blood flow through an artery of inner radius 2.0 mm and length 0.18 m at a speed of 5.6 cm/s?
Homework Equations
P1-P2 = Q8nL/pi*r fourth
or P1-P2 = velocity*8*viscosity of blood*L/rsquared
viscosity of blood = 4 x 10e-3
r =...
Homework Statement
Blood flowing thru aorta (radius 1.2 cm) enters aneurysym of radius 3.1 cm. How much on average is blood pressure higher inside the aneursym than the pressure in the unenlarged part of aorta? Average flow rate of blood thru aorta is 110 cm cubed/sec
Homework Equations
Q...
Does this mean that the pressure at 31 m above lake = atm pressure + pressure on surface area of lake? How do I calculate atmospheric pressure?
So if P = Patm + Plake then isn't P atm = pgh and that is the decrease?
Homework Statement
What is the approximate decrease in pressure in going 31 m above the surface of the lake? Air at 20 degrees C has density of 1.2 kg/mcubed. The pressure at the surface of the lake is 104 kPa
Homework Equations
Pressure = F/Area
Force = density*area*height*g...
Homework Statement
What is the blook pressure difference required to make blood flow thru a capillary of radius 3.0 um and length 1.1 mm at a rate of 0.56 mm/s?
Homework Equations
P1 - P2 = ave speed (8nL) /r squared
The Attempt at a Solution
n of blood = 4 x 10 e-3 m/s
ave...