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Dr. Mark
Easy Genetics Question?
Consider the cross (capital letters represent the dominant traits)
AaBbccDd × aaBbCcDd
What proportion of progeny will phenotypically resemble the first parent?
1 AnswerBotany8 years agoEasy Genetics Question?
Consider the cross (capital letters represent the dominant traits)
AaBbccDd × aaBbCcDd
What proportion of progeny will phenotypically resemble the first parent?
2 AnswersBiology8 years agoEasy genetics question?
Consider the cross (capital letters represent the dominant traits)
AaBbccDd × aaBbCcDd
What proportion of progeny will phenotypically resemble the first parent?
1 AnswerHomework Help8 years agoWhat is the electric field amplitude at a distance of 0.9 m from a 120 W lightbulb? Assume all the power of th?
What is the electric field amplitude at a distance of 0.9 m from a 120 W lightbulb? Assume all the power of the bulb goes into light of a single color with = 500 nm and assume the bulb produces a spherical wave.
Please give answer in V/m and show some work if you have time. Thank you!
2 AnswersEngineering9 years agoTwo capacitors are connected to an AC source as shown in the figure. Assume VAC = Vmax sin(2 f t), with Vmax =?
Two capacitors are connected to an AC source as shown in the figure. Assume VAC = Vmax sin(2 f t), with Vmax = 20 V and f = 2998 Hz
Diagram: http://i1150.photobucket.com/albums/o608/mback/22p...
What is the amplitude (peak value) of the current through the capacitors? (in A)
What is the rms current? (in A)
THANK YOU!!
2 AnswersEngineering9 years agoElectromagnetic Question?
A 48-turn circular loop has a radius 2.5 cm. It is oriented so that the magnetic field lines are normal to the area of the coil. Suppose that the magnetic field is varied so that B increases from 0.09 T to 0.34 T in 3 ms. Find the average induced emf in the coil.
1 AnswerPhysics9 years agoThe average emf induced in a coil is 0.12 V when the current in the coil changes from 3.4 A to 1.4 A in 0.3 s.?
The average emf induced in a coil is 0.12 V when the current in the coil changes from 3.4 A to 1.4 A in 0.3 s. What is the inductance of the coil?
1 AnswerEngineering9 years agoThe average emf induced in a coil is 0.12 V when the current in the coil changes from 3.4 A to 1.4 A in 0.3 s.?
The average emf induced in a coil is 0.12 V when the current in the coil changes from 3.4 A to 1.4 A in 0.3 s. What is the inductance of the coil?
1 AnswerPhysics9 years agoAn ac generator produces an output voltage described by the following equation: V(t) = 170*sin (377*t - 1.57)?
An ac generator produces an output voltage described by the following equation:
V(t) = 170*sin (377*t - 1.57)
What is the frequency f of the produced voltage?
2 AnswersPhysics9 years agoAn ac generator produces an output voltage described by the following equation: V(t) = 170*sin (377*t - 1.57)?
An ac generator produces an output voltage described by the following equation:
V(t) = 170*sin (377*t - 1.57)
What is the frequency f of the produced voltage?
2 AnswersEngineering9 years agoA 48-turn circular loop has a radius 2.5 cm. It is oriented so that the magnetic field lines are normal to the?
A 48-turn circular loop has a radius 2.5 cm. It is oriented so that the magnetic field lines are normal to the area of the coil. Suppose that the magnetic field is varied so that B increases from 0.09 T to 0.34 T in 3 ms.
Find the average induced emf in the coil.
2 AnswersEngineering9 years agoCharge on a Capacitor?
If the switch in the circuit is closed for a very long time, what is the charge on the capacitor?
R1 = 1274 ohms
C1 = 70F
ems = 6.3 V
Diagram: http://i1150.photobucket.com/albums/o608/mback/19p...
THANK YOU!!
2 AnswersPhysics9 years agoCIRCUIT PROBLEM - Charge of a capacitor?
If the switch in the circuit is closed for a very long time, what is the charge on the capacitor?
R1 = 1274 ohms
C1 = 70F
ems = 6.3 V
Diagram: http://i1150.photobucket.com/albums/o608/mback/19p...
THANK YOU!!
1 AnswerEngineering9 years agoMAGNETIC FIELD QUESTION?
An oxygen ion (O2-) is moving with a speed of 400 m/s in a direction perpendicular to a magnetic field of magnitude B. If the acceleration of the O-2 ion is 2.0e9 m/s^2, what is B?
I have tried this several times and keep getting it wrong. Here's what I've been doing:
F = QvBsin(90)
F = QvB
ma = QvB
B = m*a / Q*v
m of a proton = 1.67e-27 kg
Q of a proton = 1.602e-19 C
a = 2.0e9 m/s^2
v = 400 m/s
B = 32(1.67e-27 kg)(2.0e9 m/s^2) / (1.602e-19 C)(400 m/s)
B = 1.6679 T
The website tells me this answer is wrong but I don't know what I'm doing wrong. Thank you for helping.
1 AnswerEngineering9 years agoAn oxygen ion (O2-) is moving with a speed of 400 m/s in a direction perpendicular to a magnetic field of magn?
An oxygen ion (O2-) is moving with a speed of 400 m/s in a direction perpendicular to a magnetic field of magnitude B. If the acceleration of the O-2 ion is 2.0e9 m/s^2, what is B?
I have tried this several times and keep getting it wrong. Here's what I've been doing:
F = QvBsin(90)
F = QvB
ma = QvB
B = m*a / Q*v
m of a proton = 1.67e-27 kg
Q of a proton = 1.602e-19 C
a = 2.0e9 m/s^2
v = 400 m/s
B = 32(1.67e-27 kg)(2.0e9 m/s^2) / (1.602e-19 C)(400 m/s)
B = 1.6679 T
The website tells me this answer is wrong but I don't know what I'm doing wrong. Thank you for helping.
1 AnswerPhysics9 years agoThe particle in the figure has a positive charge, and its initial velocity is to the right when it enters a re?
The particle in the figure has a positive charge, and its initial velocity is to the right when it enters a region where B is directed into the plane of the drawing. In which direction will the particle be deflected?
Towards the top of the figure or towards the bottom of the figure?
Please explain why.
Figure: http://i1150.photobucket.com/albums/o608/mback/20p...
1 AnswerPhysics9 years agoan oxygen ion O2- is moving with a speed of 400 m/s in a direction perpendicular to a magnetic field of magnit?
An oxygen ion (O2-) is moving with a speed of 400 m/s in a direction perpendicular to a magnetic field of magnitude B. If the acceleration of the O-2 ion is 2.0e9 m/s^2, what is B?
1 AnswerPhysics9 years agoA proton with v = 400 m/s is moving through a region in which the magnetic field is B = 3 T. If the magnitude?
A proton with v = 400 m/s is moving through a region in which the magnetic field is B = 3 T. If the magnitude of force on the proton is 7.0 10-17 N, what angle does the protons velocity make with B?
1 AnswerPhysics9 years agoWhat is the time constant for the circuit? (R1 = 1274 , C1 = 70 F, = 6.3 V)?
What is the time constant for the circuit? (R1 = 1274 , C1 = 70 F, = 6.3 V)
Diagram: http://i1150.photobucket.com/albums/o608/mback/19p...
THANK YOU!!!
1 AnswerPhysics9 years agoIf the switch in the circuit is closed for a very long time, what is the charge on the capacitor? (R1 = 1274 ,?
If the switch in the circuit is closed for a very long time, what is the charge on the capacitor? (R1 = 1274 , C1 = 70 F, = 6.3 V)
Diagram: http://i1150.photobucket.com/albums/o608/mback/19p...
THANK YOU!
2 AnswersPhysics9 years ago
