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Lanise
Questions and answers by visitors named
Lanise
Questions (42)
A galvanometer with a full-scale sensitivity of 500 microA and a coil resistance of 60 ohms is to be used to build an ammeter
1 answer
428 views
Two 9.1 ohms resistors are connected in parallel, as are two 5.9 ohms resistors. These two combinations are then connected in
2 answers
595 views
Two 0.09 pith balls are suspended from the same point by threads 40 long. (Pith is a light insulating material once used to make
2 answers
795 views
Two 0.09 pith balls are suspended from the same point by threads 40 long. (Pith is a light insulating material once used to make
2 answers
585 views
physics - drwls, Sunday, January 24, 2010 at 2:50am
Compute the angle of the strings from vertical. It is sin^-1 (8.5/40) Call
1 answer
386 views
Two 0.09g pith balls are suspended from the same point by threads 40cm long. (Pith is a light insulating material once used to
1 answer
645 views
The triangle is an equilateral triangle: 20 cm x 20 cm x 20 cm.
What is the value of the electric potential at the center of the
3 answers
401 views
How much work is required to completely separate two charges (each -1.9 microC ) and leave them at rest if they were initially
2 answers
570 views
How much work is required to completely separate two charges (each -1.9 microC ) and leave them at rest if they were initially
3 answers
601 views
A 12.0- A 12.0- A 12.0-V battery remains connected to a parallel plate capacitor with a plate area of 0.204m^2 and a plate
2 answers
1,352 views
Calculate the voltage required to accelerate a beam of protons initially at rest if they have a kinetic energy of 2.7 eV.
deltaV
4 answers
758 views
Calculate the voltage required to accelerate a beam of protons initially at rest if they have a kinetic energy of 4.5keV.
deltaV
2 answers
516 views
Current passes through a solution of sodium chloride. In 1.00 second,2.68 x 10^16 Na+ ions arrive at the negative electrode and
1 answer
489 views
When switch S is open, the voltmeter V of the battery reads 3.13 . When the switch is closed, the voltmeter reading drops to
2 answers
884 views
When switch S in the figure is open, the voltmeter V of the battery reads 3.13V . When the switch is closed, the voltmeter
2 answers
1,260 views
A 1500-W heater is designed to be plugged into a 120-V outlet.
What current will flow through the heating coil when the heater is
4 answers
3,654 views
Two copper wires have equal cross-sectional areas and lengths of 2.4m and 1.3m, respectively.
What is the ratio of the current in
3 answers
526 views
On average, an electric water heater operates for 3.4h each day.
If the cost of electricity is $0.3 kWh, what is the cost of
2 answers
609 views
If the voltage across an ohmic resistor is quadrupled, the power expended in the resistor
increases by a factor of 4. decreases
1 answer
498 views
A single resistor is wired to a battery.Define the total power dissipated by this circuit as P initial.
What is the power, in
3 answers
592 views
Current passes through a solution of sodium chloride. In 1.00 second, 2.68 x 10^16 Na+ ions arrive at the negative electrode and
3 answers
830 views
To move 5.0 C of charge from one electrode to the other, a 12-V battery must do how much work?
60 J 5.0 C 12 J 12 V 60 W
4 answers
453 views
In a proton linear accelerator, a 8.6 proton current hits a target.
5.4×10^16 protons/second hit the target. How much energy is
2 answers
587 views
A single resistor is wired to a battery.
Define the total power dissipated by this circuit as P(initial). What is the Power? Now,
5 answers
3,291 views
Three resistors with values 1.1 , 3.4 , and 5.8 are connected in parallel in a circuit with a 6.4 battery.
What is the total
3 answers
508 views
A capacitor in a single-loop RC circuit is charged to 64% of its final voltage in 1.5 s.
Find the time constant for the circuit.
2 answers
522 views
A galvanometer with a full-scale sensitivity of 500 microA and a coil resistance of 60 ohms is to be used to build an ammeter
3 answers
583 views
Two 9.1 ohms resistors are connected in parallel, as are two 5.9 ohms resistors. These two combinations are then connected in
2 answers
1,128 views
An electron travels at a speed of 4.0×104 m/s through a uniform magnetic field whose magnitude is 1.4×10−3 T.
What is the
5 answers
1,272 views
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 4000 N/C and 20
4 answers
1,186 views
Two long, parallel wires separated by 50 cm each carry currents of 3.0 A in a horizontal direction.
Find the magnetic field
2 answers
1,365 views
A solenoid is wound with 290 turns per centimeter. An outer layer of insulated wire with 200 turns per centimeter is wound over
3 answers
917 views
Two long, straight, parallel wires 8.0 cm apart carry currents in opposite directions.
Use the right-hand source and force rules
4 answers
1,732 views
A person is 3 times as old as aonther person but in 15 years she will only be 2 times as old. I found the answer the younger
4 answers
614 views
A standard 14.6-inch or .360 meter computer monitor is 1024 pixels wide and 768 pixels tall. Each pixel is a square
1 answer
893 views
A telescope has a magnification of 20 and consists of two converging lenses, the objective and the eyepiece, fixed at either end
1 answer
515 views
A solar cell is designed to have a nonreflective film of a transparent material for a wavelength of 600 nm.
Will the thickness of
1 answer
420 views
Sirius is about 9.0 light-years from Earth.
To reach the star by spaceship in 10 years (ship time), how fast must you travel? How
2 answers
1,153 views
Sirius is about 9.0 light-years from Earth.
To reach the star by spaceship in 10 years (ship time), how fast must you travel? How
1 answer
641 views
Sirius is about 9.0 light-years from Earth.
To reach the star by spaceship in 10 years (ship time), how fast must you travel? How
2 answers
1,168 views
An electron travels at a speed of 0.700c. What is its kinetic and total energy? I got, but this is not right.
K , E
1 answer
409 views
A small hole in the wing of a space shuttle requires a 12.8cm^2 patch. What is the patch's area in square kilometers (km^2)? if
4 answers
2,917 views
Answers (1)
Current passes through a solution of sodium chloride. In 1.00 second, 2.68 x 10^16 Na+ ions arrive at the negative electrode and 3.92 x 10^16 Cl-ions arrive at the positive electrode. What is the current passing between the electrodes? Current = mA What is
