Friday

January 20, 2017
Number of results: 124,869

**Phsyics**

Two objects attract each other gravitationally with a force of 2.1×10−10 when they are 0.21 apart. Their total mass is 4.00 .

*April 3, 2010 by Michael*

**physics**

Two objects attract each other gravitationally with a force of 2.1×10−10 when they are 0.25 apart. Their total mass is 4.50 .

*October 14, 2011 by XG*

**Bio Help Please**

1)How can you indicate that the bacteria have taken up the plasmid? 2)What is the purpose of the LB/amp(-) plate? Should there be bacterial growth on the plate? 3) Why would one compare plates LB/amp (-) and LB/amp (+)?

*March 30, 2013 by Melissa*

**Bio Help Please!!!**

1)How can you indicate that the bacteria have taken up the plasmid? 2)What is the purpose of the LB/amp(-) plate? Should there be bacterial growth on the plate? 3) Why would one compare plates LB/amp (-) and LB/amp (+)?

*March 31, 2013 by Melissa*

**Physics**

Two objects attract each other gravitationally with a force of 2.1×10−10 N when they are 0.21 M apart. Their total mass is 4.00 KG Find their individual masses. .

*April 6, 2010 by mm*

**Physics**

Two objects attract each other gravitationally with a force of 2.3×10−10 when they are 0.21 apart. Their total mass is 4.50 . Find their individual masses.

*February 14, 2011 by Kevin*

**Physics**

Two objects attract each other gravitationally with a force of 2.7×10−10 when they are 0.65 apart. Their total mass is 4.4 Find their individual masses.

*February 19, 2011 by B-rad*

**biology**

Which bacterial plates control for: 1) If the E. coli cells were transferred correctly: 2) If the E. coli cells can grow on LB: 3) If the Ampicillin is working correctly: 4) If the “stock” E. coli cells were contaminated with plasmid: Possible choices for each number are...

*July 18, 2009 by Jenn*

**Physics**

Two objects attract each other gravitationally with a force of 2.9 10-10 N when they are 0.29 m apart. Their total mass is 4.0 kg. Find their individual masses.

*October 2, 2011 by Ellen*

**physics**

Two objects attract each other gravitationally with a force of when they are 0.25 m apart. Their total mass is 4.00 kg. Find their individual masses

*October 30, 2015 by rani*

**Physics**

A 60 watt light bulb in a household circuit at 120 V carries a current of 0.500 amp. (An amp was defined in class as a way to measure charge movement. One amp is one coulomb per second.) How many electrons move through this light bulb in five minutes?

*March 7, 2011 by Anonymous*

**Physics**

two objects attract each other gravitationally with a force of (2.5)(10^-10)N when they are 0.25m apart. Their total mass is 4.0 kg. Find their individual masses.

*February 14, 2014 by Juan*

**PHY**

Two objects attract each other gravitationally with a force of 3.5 10-10 N when they are 0.33 m apart. Their total mass is 4.0 kg. Find their individual masses. A)larger mass kg B)sMaller mass kg

*September 19, 2010 by ami*

**physics**

two objects attract each other gravitationally with a force of 2.5^-10N.when they are 0.25m apart. Their total mass is 4.00kg. Find the individual mass?

*March 30, 2014 by rdw*

**univ-phys**

Two objects attract each other gravitationally with a force of 2.5×10^-10N when they are 0.22m apart. Their total mass is 4.50kg. Find their individual masses.

*October 2, 2009 by Taylor Rae*

**Physics**

How to solve/work problem? Two objects attract each other gravitationally with a force of 2.5 * 10^-10 N when they are .25m apart. Their total mass is 4.0kg. Find their individual masses.

*February 21, 2011 by Emily Grossman*

**Electric circuit and Electronics**

A triangular wave of +-12v amplitude and 10Mhz frequency is generated at the output of an op-amp.Calculate the minimum slew rate of the op-amp used.

*March 17, 2016 by gourav bhardwaj*

**phy**

Two objects attract each other gravitationally with a force of 3.5 10-10 N when they are 0.33 m apart. Their total mass is 4.0 kg. Find their individual masses. I got my answers but its say incorrect. the values i got 3.43 for larger mass and 0.57 small mass

*September 17, 2010 by ami*

**Biology**

The reason you might see fewer colonies on your LB/Amp/Arabinose + plate (compared to the number of colonies..? The reason you might see fewer colonies on your LB/Amp/Arabinose + plate (compared to the number of colonies that you see on your LB/Amp + plate) is because? a. UV ...

*October 18, 2009 by blair*

**calculus**

The Voltage v , Current I and Resistance R are related by the equation V=IR. Suppose that V is increasing at a rate of 2 volt/sec, while I is decreasing of the rate of 1/5 (amp/sec ). Let t denote time in seconds. Find the rate at which R is changing when V=40volts and 1=2 amp .

*November 7, 2014 by Maria*

**calculus**

The Voltage v , Current I and Resistance R are related by the equation V=IR. Suppose that V is increasing at a rate of 2 volt/sec, while I is decreasing of the rate of 1/5 (amp/sec ). Let t denote time in seconds. Find the rate at which R is changing when V=40volts and 1=2 amp .

*November 8, 2014 by maria*

**calculus-changing voltage**

V = IR V is increasing at the rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t = time in sec What is dV/dt? What is dI/dt? Find the rate at which R is changing when V = 12 volts and I = 2 amp. Thanks. Please ignore this. I got the answer.

*December 9, 2006 by Jen*

**physics**

Expensive amplifier A is rated at 250 W, while the more modest amplifier B is rated at 45 W. (a) Estimate the sound level in decibels you would expect at a point 3.5 m from a loudspeaker connected in turn to each amp. (b) Will the expensive amp sound twice as loud as the ...

*November 7, 2013 by emy*

**physics**

8. The current in a simple series circuit is 5 amp. When an additional resistance of 2 ohms is inserted in series, the current drops to 4 amp. What is the resistance of the original circuit?

*March 14, 2011 by okay*

**precalc**

1. Write an equation of the following using the particular function. 1. The function is sine. The amp is 2 and the domain is [0, 2]. I got y=2sin(pie(x)) but i plugged that in my calc and it doesnt look like the graph on my worksheet 2. The function is cosine. The amp is 3 and...

*January 24, 2013 by Rebekah*

**Calculus**

If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. Find the ...

*February 28, 2013 by Trevor*

**Physics**

Two objects attract each other gravitionally with a force of 2.5 *10^-10 N when they are .25m apart. Their total mass is 4.0kg. Find their individual masses.

*February 22, 2011 by Emily Grossman*

**Biology**

In one signaling pathway, cyclic AMP (or cAMP) acts as a second messenger in a series of reactions that result in the relaxation of smooth muscle cells in artery walls. Define cyclic AMP and describe the role and properties of a second messenger. Then explain how a medication ...

*March 4, 2016 by nan*

**Calculus**

Calculus If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. ...

*February 28, 2013 by Trevor*

**Biology - Genetics**

Can someone please help explain in a step by step process how to do this problem and what it means? I do not understand what it is asking for exactly in regards to positive, negative, and the resistance gene and so forth...especially about the media being selective. What does ...

*October 1, 2015 by Misa*

**physics**

35 amps of current goes through a 40 amp fuse. What happens? 25 amps of current goes through a 15 amp fuse. What happens? Think about what a fuse is used for. Why would you put a fuse in a circuit?

*April 13, 2007 by Anonymous*

**physic**

An in-ground swimming pool has the dimensions 20 m x 15 m. It is filled with water to a uniform depth of 3.00 m.What is the total force exerted on the bottom of the swimming pool?The density of water = 1.00 × 103 kg/m3.

*January 9, 2016 by Anonymous*

**physics**

Two objects attract each other with a gravitational force of magnitude 0.99 10-8 N when separated by 19.1 cm. If the total mass of the objects is 5.01 kg, what is the mass of each?

*July 28, 2010 by Rashad*

**math**

angle of elevation of two ships from the top of the lighthouse and on the same side are fond to be 45&30 dreege respectively if the ship is 200m apart find the height of the lighthouse

*November 29, 2015 by rupa*

**Help Please!**

1) AMP -activated protein kinase (AMPK): Option A: is activated by both AMP and ADP. Option B: undergoes allosteric regulation. Option C: all of the choices are correct. Option D: adds phosphate groups to serines and threonines in other enzymes. 2) Which of the following ...

*September 12, 2016 by Saki*

**Algebra**

If a worker wants to pack 200 newly harvested mangoes at average size of 3"x2" in delivery boxes .To optimize the cost and profit in packaging , the mangoes must be properly packed in boxes of similar sizes. To systemize counting , there must also be equal ...

*August 17, 2014 by Claudette*

**MAth**

If a worker wants to pack 200 newly harvested mangoes at average size of 3"x2" in delivery boxes .To optimize the cost and profit in packaging , the mangoes must be properly packed in boxes of similar sizes. To systemize counting , there must also be equal ...

*August 17, 2014 by Claudette*

**Cell Biology Help Please!**

1) AMP -activated protein kinase (AMPK): Option A: is activated by both AMP and ADP. Option B: undergoes allosteric regulation. Option C: all of the choices are correct. Option D: adds phosphate groups to serines and threonines in other enzymes. 2) Which of the following ...

*September 13, 2016 by Saki*

**Physics**

Please can you help out: 1)The Potential diff across the terminals of a battery is 8.5v when there is a current of 3amps in the cct from the -ve to the +ve terminal. When the current is 2amps in the reverse direction, the potential diff becomes 11volts. a) what is the internal...

*April 17, 2007 by Charles*

**maths**

Side of parallelogram is16&3x find x?

*November 10, 2015 by Vijay*

**math/physics**

A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp, frequency and steady ...

*April 10, 2015 by Frank*

**Math**

If a worker wants to pack 200 newly harvested mangoes at average size of 3"x2" in delivery boxes .To optimize the cost and profit in packaging , the mangoes must be properly packed in boxes of similar sizes. To systemize counting , there must also be equal ...

*August 17, 2014 by Claudette*

**differential equations**

Search: A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp, frequency and ...

*April 18, 2011 by mike*

**microbiology**

What is a unique mono-nucleotide of the RNA? Is it GMP AMP TMP CMP or UMP thanks

*October 30, 2007 by Teresa*

**physics**

Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?

*February 23, 2011 by mark*

**physics**

Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?

*February 23, 2011 by mark*

**physics**

A 10 amp fuse is connected in series to 4 identical 5 ohm resistors in parallel with each other. What is the maximum size battery that could be connected without blowing the fuse?

*February 24, 2011 by Crystal*

**physics**

Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is μk = 0.28. Determine the ...

*March 15, 2012 by tom*

**physics**

Calculate the power of a device that requires 1.98 mA at 25.5 V. I know how to do the problem. i am just confused on how to convert megaAmps(which is mA right?) to amps. i think there are 1million amps in one mega amp? is that correct or is it the other way. so would you do 1....

*April 15, 2012 by hannah*

**PHYICAL**

If average current of 5.5 Amp is passing through a condutor for 2 min ,What is the charge in Coulomb ( C ) crossed any cross sectional area.

*July 10, 2012 by asas*

**Physica**

if an averge current of 5.5 Amp is passing through aconductor for 2 min . what is the charge in Coulomb ( C ) crosstional areaed any cross sec

*August 3, 2012 by LOlo*

**IPC**

i don't have a book or anything to go look all this stuff up so i really need help understanding this.. Which of the following statements is not true? a)negatively charged objects attract other negatively charged objects. b)postively charged objects attract negatively charged ...

*May 11, 2011 by Please help!!*

**physics**

7)In calculating the force of gravity between two objects, if the mass of one object increased by 4 and the other by 2, how many times would the force of gravity increase? I don't really understand but I got 6 times 8)In calculating the force of gravity between two objects, if...

*April 1, 2008 by Jon*

**Physica**

if an averge current of 5.5 Amp is passing through aconductor for 2 min . what is the charge in Coulomb ( C ) crosstional areaed any cross sectional area

*August 3, 2012 by mmm*

**math: and i really need help**

You plug a microwave into a 20-ampere (amp) electrical circuit. The microwave use up to 12.5 amps. At most, how many amps are availible for other appliances? 20 - 12.5 = ?? amps

*October 24, 2006 by pinkpolkadots7*

**math**

a worker is pushing an 80lb chest up a ramp to land truck. how much force must he use in order to keep the chest from rolling back down the amp? the ramp is inclined 13.8 degrees. draw a sketch with force vectors working in this problem and solve the problem

*November 14, 2016 by keke*

**chemistry**

I have 3 mg/mL AMP in 50ul stock solution; How do I dilute it to 50ug in 50ul thanks you

*July 5, 2012 by Jenni*

**Anatomy**

1)Which two molecules/chemicals make up the backbone of the DNA molecule? 2)Which organelle makes most ATP? 3)AMP would have ________ phosphate(s) attached to it? 4)Which is the smallest carbohydrate 5)Which type of chemical bond involves a sharing of electrons

*October 15, 2008 by Stephanie*

**AP BIO**

If a particular experiment were known to have a transformation efficiency of 3 x 103 bacteria/ìg of DNA, how many transformant colonies would be expected to grow on the LB/amp/ara plate?

*April 7, 2010 by Samuel*

**physics**

a 25v heater has two elements, one of which is missing. if the resistance of the remaining element is measured to be 50 ohm,what must the resistance of a second element be when connected in parallel to maintain a current of 1 amp.

*February 27, 2016 by suzy*

**Digital Logic**

The input voltage to a certain op-amp inverting amplifier is 10 mV, and the output is 2 V. What is the closed-loop voltage gain?

*December 4, 2007 by Matthew*

**Physics**

In calculating the force of gravity between two objects, if the mass of one objects increased by 4 and the other by 2, how many times would the force of gravity increase? Ok well Im horrible at physics but the way I understood it was that you would take 4 times 2 then divide ...

*May 4, 2008 by Lynn*

**physics**

2 objects are .25m apart and exert a force of 2.5x10^-10 N on each other. Thier total mass is 4 kg. what is the mass of each?

*February 20, 2011 by mark*

**Physics**

A 5.0 amp current flows through a 0.20m long solenoid with 1500 loops What are the magnitude and direction of the magnetic field at the centre of the solenoid?

*February 2, 2015 by Sandara*

**Basic electrical engineering**

The average velocity of the electrons in a conductor carrying a current of 65.5 amp is 0.0153 inches per sec.what is the cross-sectional area of the conductor.

*July 1, 2015 by Kenzo*

**physics**

Assume that you have two objects, one with a mass of 5 kg and the other with a mass of 20 kg, each with a charge of −0.012 C and separated by a distance of 9m. What is the electric force that these objects exert on one another? Answer in units of N

*April 22, 2013 by Anonymous*

**physics**

Two asteroids, each with a mass of 6 million kilograms are attracted gravitationally with a force of 0.75 N. How far apart are their centers?

*December 6, 2011 by kiki*

**physics**

A wire that is 0.86 meters long is moved perpendicularly through a constant magnetic field of strength 0.035 newtons/amp·meter at a speed of 6.0 meters/second. What is the emf produced?

*December 20, 2013 by Anonymous*

**Math**

Find the amplitude, frequency, and distance when t=3 a. y=-15cos((pi*t)/3)+5 b. y=120sin100pi*t I think the amp for a. is 15, the freq is 3/2 cycles per unit of time, and the distance is 20, but I'm not totally sure if I'm approaching this problem correctly.

*December 25, 2014 by Andrew*

**chemistry**

can someone please explain how to indicate where a label appears in a product? for example: where the label appears in 2-[14C]-Glycine --> AMP

*April 28, 2011 by brian*

**Chemistry**

can someone please explain how to indicate where a label appears in a product? for example: where the label appears in 2-[14C]-Glycine --> AMP

*April 28, 2011 by brian*

**biochemistry**

can someone please explain how to indicate where a label appears in a product? for example: where the label appears in 2-[14C]-Glycine --> AMP

*May 2, 2011 by anony*

**electrical engineering**

Input range: -100mV to +60mV Voltage supplies to the op-amp= ±15V how do we find the input offset voltage?

*February 3, 2012 by eng*

**College Chemistry**

can someone please explain how to indicate where a label appears in a product? for example: where the label appears in 2-[14C]-Glycine --> AMP

*May 2, 2011 by ana*

**biology**

Compare and Contrast: diglyceride vs. dipeptide vs. disaccharide Compare and contrast: GTP vs. UDP vs. AMP

*February 11, 2008 by Anonymous*

**bio**

Compare and Contrast: diglyceride vs. dipeptide vs. disaccharide Compare and contrast: GTP vs. UDP vs. AMP

*February 11, 2008 by Anonymous*

**organic chemistry**

can someone please explain how to indicate where a label appears in a product? for example: where the label appears in the patheway 2-[14C]-Glycine --> AMP

*May 2, 2011 by anony*

**maths**

newton’s law of gravitation states that any two bodies attract each other with a force that is inversely proportional to the square of the distance between them. The force of attraction between two bodies is 460 * 10^-12 newtons when they are 6 cm apart. What is the force on...

*November 21, 2011 by rahul patel*

**physics**

I have a typical Opamp diode log amplifier. formula for it is.Vout=-Vth*ln(Vin/IsR) The positive side of amp has a resistor and then is tied to ground.How does that extra resistor impact my standard forumla.

*April 21, 2016 by bearinthewoods*

**science help**

One group of students is investigating the properties of charged objects. Their observations are listed below. When two positively charged objects are brought close to each other, they push each other away. When two negatively charged objects are brought close to each other, ...

*December 1, 2015 by Oscar*

**12th Calculus**

suppose that at any tiem t(sec) the current i(amp) in an alternating current circuit is i=2cost+2sint. What is the peak (largest magnitude) current for this circuit?

*November 18, 2008 by ee*

**Physics**

wo objects each have a positive charge. The total charge on both objects is 365 µC. When the objects are placed a distance of 1.30 m apart, each exerts an electrostatic force of 24.3 N on the other. What is the charge on each object? (Give your answers in µC.)

*August 25, 2014 by Joe*

**CHEMISTRY**

Chromium plating is done using a dichromate solution. How long would it take to plate 1.0x10-2mm thick onto a car bumper with surface area 0.25m^2 in a 25.0 Amp electrolytic cell? (density of chromium is 7.19g/cm^3)

*May 30, 2013 by PreMed33*

**physics**

Expensive amplifier A is rated at 210W , while the more modest amplifier B is rated at 45W . Estimate the sound level in decibels you would expect at a point 9.0m from a loudspeaker connected in turn to each amp.

*November 18, 2013 by waves*

**Physics**

A 20 volt battery has a 4 ohm internal resistance. There is a 5 amp fuse in the main line of the battery. How many 6 ohm resistors can be connected in parallel across the battery before thefuse blows?

*June 23, 2014 by Chyna*

**biology**

If a particular experiment were known to have a transformation efficiency of 3 x 10^3 bacteria/µg of DNA, how many transformant colonies would be expected to grow on the LB/amp/ara plate? You can assume that the concentration of DNA and fraction of cells spread on the LB agar...

*March 5, 2009 by nathan*

**energy conversion**

A 5hp 230volt shunt motor takes 18 amp when operating at full load. The Shunt-field resistance is 115ohms and the armature resistance is 0.25 ohm. calculate the value of the starter resistor if the armature current is limited to 1.5 times the rated value at the starting ...

*September 20, 2010 by baskuuugin*

**physics**

A 2-C and a 4-C charge attract each other with a 10-N froce when placed a certain distance apart. With how much force will a 2-C charge and an 8-C charge attract each other when placed the same distance apart? ** I know the answer, but can't find out how to solve it?? **

*July 27, 2010 by Jen*

**Social Studies**

Which type of amp would you use to find out the population of northern canada thematic? Which type of map would you use to compare the elevations of the alpha and andes physical?

*January 9, 2013 by Jerald*

**physics**

Two spacecraft in outer space attract each other with a force of 4 N. What would the attractive force be if they were one-eighth as far apart?

*October 8, 2016 by Jessica*

**science**

Which statement best describes Newton’s Law of Universal Gravitation? A.Large objects, like Earth and the Sun, attract other objects everywhere in the universe. B.Gravity is a kind of magnetic force between objects and Earth. C.Gravity is the result of the curvature of space...

*February 17, 2014 by victoria*

**physics**

A student throws a 9 gram of gum is thrown across the physics lab from a distance of 2.5 m. When the gum has a horizontal velocity of vo it connects with a mass on the end of 1.62 kg simple pendulum which is initially at rest. The pendulum has a length of L of 0.74 m. The gum ...

*April 12, 2010 by Jacob*

**Physics**

Two objects x and y with a total mass od 2.5 x 10^3 kg are joined together in outer space and are at rest. An astronaut in a space shuttle presses a button that is explosive and separates the two objects from each other. X moves to the right with a velocity of 4.8 m/s and Y ...

*August 8, 2011 by Xanther*

**Physics**

If the EMF produced in a wire is 0.88 volts and the wire moves perpendicular to a magnetic field of strength 0.075 newtons/amp·meter at a speed of 4.20 meters/second, what is the length of the wire in the magnetic field?

*May 16, 2013 by Jake*

**physics**

The circuit shown below has a 100 Ohm resistor and 50 Volt-sec/amp (a unit of inductance called the Henry) inductor connected to a 12V battery. It is a freshman physics tradition that inductors are very poorly The switch is closed at t = 0 seconds. What is the magnitude of the...

*December 4, 2013 by james*

**science**

vs =6 volts vth =2 volts ida(diode current)=1m amp no value given for resistor network find rth(thevenien) 2,000 and 4000 do not work. diode current must not be equal to isc.?? voc=2 volts

*December 16, 2015 by bear*

**Physics**

In mathematical language, Newton's Law of Gravity expresses the force of gravity, F, between two objects in the following way: F= (GMm)/r^2 where M is the mass of one object, m is the mass of the other object, r is the distance between the two objects, and G is the ...

*September 22, 2011 by Adam*

**physics**

1. Outlets of two rooms are placed in parallel on a single circuit (120 volts). How many 100 watt light bulbs could you run on a circuit that had a 15 amp circuit breaker (max of 15 amps total) need help setting up problem?? Each 100 W lamp draws I = P/V = 100/120 = 0.83 Amps...

*November 17, 2006 by mitch*

**Physics**

1.Two balls, each with a mass of 0.871 kg, exert a gravitational force of 8.23 × 10−11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6.673 × 10−11 Nm2/kg2. Answer in units of m I got .785 which is correct. 002 ...

*December 1, 2011 by Sam*

**physics**

Two spacecraft in outer space attract each other with a force of 45 N. What would the attractive force be if they were \frac{1}{5} as far apart? F_{attractive} = _____________N (no rounding up)

*March 3, 2014 by Melissa*