# A charge +Q and -2Q were placed on first and third of three very large parallel plates. The middle plate is earthed. Find the chargeon right extreem plate

17,079 questions, page 78-
## Physics

Horizontal velocity: 138ft/s Vertical velocity: 109ft/3 A ball is thrown at 95 mi/h. The distance from the mound to the plate is 60.5 ft. Assuming the ball is pitched parallel to the ground, how far does it fall due to gravity by the time it reaches the

*asked by Jill on October 25, 2010* -
## math

a freight train that is 1 mile long is traveling at 60mph. a second train that is 2 miles long is traveling 40mph. the trains are moving in opposite directions on parallel tracks. how many seconds does it take between the time their locomotives meet and

*asked by bob on October 17, 2010* -
## physics

Four long, parallel conductors carry equal currents of I = 9.50 A. The current direction of the current is into the page at points A and B and out of the page at C and D. Calculate the magnitude and direction of the magnetic field at point P, located at

*asked by arthur on November 6, 2013* -
## General Physics II

___A __/__\ B/____\C radius (each side of this equilateral triangle) 0.5 m Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction (counterclockwise from the +x-axis of the net

*asked by Jen on February 11, 2012* -
## College physics

Open Question: Two equal point charges of 5 µC are on the horizontal axis. One charge is at -10 cm, the other is at +10 cm.? These two charges don't move, they are STUCK, take the potential to be zero at infinity. Find the potential at the following

*asked by Julie on March 3, 2013* -
## Physics

Capacitors are used in many applications where you need to supply a short burst of energy. A 143 μF capacitor in an electronic flash lamp supplies an average power of 12.6 kW to the lamp for 2.95 ms. To what potential difference must the capacitor

*asked by Ashley on January 31, 2012* -
## physics

Two identical charges, q1 = q2 = 6.0 C, are separated by 1.0 m. a. Calculate the electric field and electric potential difference at point P, midway between them. b. Replace one of the charges with a charge of the same magnitude but opposite sign and

*asked by myra on May 15, 2012* -
## Physics-Please check

Do charged particles always experience equal but opposite electrical forces? My answer is The electric forces are directly porportional to the quantity of the charge on the objects. Is that correct-we just started learning this and I'm trying to answer

*asked by Rachel B. on March 8, 2011* -
## chemistry

How do i calculate the effective nuclear charge of a 3d electron of copper? what is the zeff. for a electron in the 3d orbital of copper. i looked up the answer to be 13.20, but i calculated 13.05 this is my work: (1s2)(2s2 2p6)(3s2 3p6)(3d10)(4s1)

*asked by mandy on November 10, 2008* -
## spanish

After the party, tell a friend who was in charge of each task. Use direct-object pronouns in your answers. ¿Quién compró los mariscos? Rosa ¿Quién preparó la ensalada? Mirta y Lidia ¿Quién limpió el apartamento después de la fiesta? La profe

*asked by AYUDA ME PORFAVOR!! :) on November 2, 2010* -
## physics

A 40.0 kg wagon is towed up a hill inclined at 17.9° with respect to the horizontal. The tow rope is parallel to the incline and has a tension of 140 N. Assume that the wagon starts from rest at the bottom of the hill, and neglect friction. How fast is

*asked by luc on October 10, 2009* -
## Business

Which of the following is NOT an example of parallel structure? "Yoga can help you develop flexibility, reduce stress, and increase relaxation." "Learn how to analyze business audiences, improve your style, and edit thoroughly." "You are all encouraged to

*asked by Tina on February 2, 2011* -
## business Communication

Which of the following is NOT an example of parallel structure? a. Yoga can help you develop flexibility, reduce stress, and increase relaxation. b. Learn how to analyze business audience, improve your style, and edit thoroughly. c. You are all encouraged

*asked by Sparkle on March 30, 2011* -
## Business Communication

Which of the following is NOT an example of parallel structure? A. "Yoga can help you develop flexibility, reduce stress, and increase relaxation." B. "Learn how to analyze business audiences, improve your style, and edit thoroughly." C. "You are all

*asked by Ron on July 29, 2012* -
## Physics

A 20 C charge experiences a 2 N force in an electric field. What is the strength of the electric field?

*asked by Jennifer on April 27, 2015* -
## Physics

What condition is necessary for the flow of heat? what analogous condition is necesary for the flow of charge?

*asked by Taylor on March 10, 2009* -
## chemistry

What charge would most likely form on an ion from elements in the following groups? a) Group 1A b) Group 2A c) Group 6A d) Group 7A

*asked by Rebecca on January 10, 2009* -
## Statistics/Probability

The standard deviation of the masses of articles in a large population is 4.55 kg. Random samples of size 100 are drawn from the population. Find the probability that a sample mean will differ from the population mean by less than 0.8 kg.

*asked by Koylar on July 17, 2014* -
## Statistics for the Behavioral and Social Sciences

Using a t test for dependent means based on .05 significance level, what is the power of each studies. Study Effect size N Tails (a) Small 20 one (b) Medium 20 one (c) medium 30 one (d) medium 30 two (e) large 30 two

*asked by Barbara Pratt on January 17, 2011* -
## statistics for the behavioral and social sciences

Using a t test for dependent means based on .05 significance level, what is the power of each studies. Study Effect size N Tails (a) Small 20 one (b) Medium 20 one (c) medium 30 one (d) medium 30 two (e) large 30 two

*asked by chuckris on April 11, 2011* -
## 8th Grade Science

Why do scientist use standered units of measurements? A.) Because their tools only measure in units B.) Because their units are either too small or too large to work with C.) So they can communicate findings without confusion D.) So that people who are not

*asked by ItsMe! on September 1, 2016* -
## Cosmology

The solution of Olbers' Paradox is: - The universe is opaque at large scales - The universe expands - There is simply not enough starlight in the universe - Matter is clustered in such a way that the integral brightness converges

*asked by qwerty on January 8, 2013* -
## Social Studies

Which of the following is a reason why Russia lost power in the early 1900s? A. Its army was too large. B. Unrest among the poor grew.++ C. Russia had a weak king. D. Russia failed to westernize.

*asked by dori on February 25, 2019* -
## english grammar

write an essay on the the topic- government has granted a large amount of money to your school to construct a hobby room and buy instruments for your school orchestra. why would you like to have the two in your school.

*asked by tina on June 27, 2013* -
## math

Deandre rented a truck for one day. There was a base fee of 16.99 , and there was an additional charge of 78 cents for each mile driven. Deandre had to pay 160.51 when he returned the truck. For how many miles did he drive the truck?

*asked by janae on February 12, 2013* -
## math

Bill rented a truck for one day. There was a base fee of $18.95 , and there was an additional charge of .96 cents for each mile driven. Bill had to pay $135.11 when he returned the truck. For how many miles did he drive the truck?

*asked by teri on April 16, 2014* -
## Physics

A long, straight metal rod has a radius of 6.00 cm and a charge per unit length of 36.0 nC/m. Find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod. (a) 1.50 cm N/C (b) 13.5 cm

*asked by gita on September 13, 2013* -
## physics

Two ping pong balls each have a mass of 1.4 grams and carry a net charge of 0.450uC. one ball is held fixed. at what height should the second ball be placed directly above the fixed ball if it is to remain at rest there?

*asked by jamal puritt on January 22, 2014* -
## algebra

The total charge for a taxi ride includes an initial fee of $2.75 plus $2.25 for every 1/2 mile traveled. Joe took a taxi, and the ride cost him $56.75. How many miles did he travel in the taxi? What is the equation? Show your work.

*asked by syram on March 19, 2013* -
## statistics

The probability that a 30-year old white male will live another year is .99842. What premium would an insurance company charge to break even on a 1-year $1 million dollar term life insurance policy?

*asked by nounou on July 16, 2010* -
## Math 221

Joe rented a truck for one day. There was a base fee of $15.99 , and there was an additional charge of 97 cents for each mile driven. Joe had to pay $295.35 when he returned the truck. For how many miles did he drive the truck?

*asked by Maria on July 20, 2014* -
## math

Dan rented a truck for one day. There was a base fee of 20.89 , and there was an additional charge of81 cents for each mile driven. Dan had to pay124.67 when he returned the truck. For how many miles did he drive the truck?

*asked by hassen on December 5, 2015* -
## Physics

A neutral solid conducting sphere of radius R has charge Q deposited in it, and is sitting at the centre of a conducting shell of inner radius 2R and outer radius 3R. After the conductor reaches equilibrium, find the potential at R

*asked by Anonymous on July 5, 2016* -
## physics

A proton travels with a speed of 3.39×106 m/s at an angle of 56.8 ◦ with a magnetic ﬁeld of 0.305 T pointed in the y direction. The charge of proton is 1.60218 × 10−19 C. What is the magnitude of the magnetic force on the proton? Answer in units of

*asked by Anonymous on April 19, 2013* -
## physics

A long, straight metal rod has a radius of 4.50 cm and a charge per unit length of 30.0 nC/m. Find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod. a)3.00 cm b)13.5 cm c)120 cm

*asked by anonymous on November 1, 2010* -
## chem TITRATION

1. If a student fails to remove a large air bubble in the buret before beginning the titration, what will be the effect on the volume of titrant required to reach the titration endpoint? A. The student will record a volume that is SMALLER than it should be

*asked by A on May 25, 2018* -
## Math. PLZZZ HELP ME!!!

Jackson made a poster in the shape of a quadrilateral. Opposite sides of the poster are congruent and parallel. Which of the following names the shape of Jackson’s poster? A.square B.rhombus C.rectangle D.trapzoid•• Correct me

*asked by Jojo on February 16, 2016* -
## math

2 planes parallel to the base of a pyramid cut the pyramid at 1/4 and 2/3 of the height as measured from the base up. If the volume of the pyramid is 100 cubic inches, what is the volume of the middle piece to the nearest tenth?

*asked by Ian on May 13, 2012* -
## math geometry

P is parallel to q m angle 1 =(6x+y-4) m angle 2 = (x+9y+1) m angle 3 = (11x+2) A. Set up an equation(s) to find x and y. B. Show all work and solve for x and y. C. Use these values to find the values of angles 1, 2, and 3. Cant figure this out at all.

*asked by genny on January 19, 2016* -
## maths

if two resistors of r1 and r2 ohms are connected in parallel in an electriccircuit to make a R ohm resistor, the value of R can be found from the equation 1/R= 1/r1+ 1/r2. if r1 is decreasing at the rate of 1 ohm/s and r2 is increasing at the rate of 0.5

*asked by sadia khan on January 19, 2013* -
## calculous

3.Given the function f defined by f(x)=2x^3-3x^2-12x+20 a.Find the zeros of f b.Write an equation of the line perpendicular to the graph of f at x = 0 c. Find the x and y coordinates of all points on the graph of f where the line tangent to the graph is

*asked by Yoona on November 5, 2011* -
## physics

An electron is released at the negative plate of a parallel plate capacitor and accelerates to the positive plate a) as the electron gains kinetic energy, does its electric potential energy increase or decrease? Why?

*asked by H on July 10, 2008* -
## math

A rectangular field is to be enclosed by a fence. Two fences parallel to one side of the field divide the field into three rectangular fields. If 2400m of fence are available find the dimensions giving the max area.

*asked by steven on July 12, 2009* -
## Algebra1

Complete this sentence with the correct choice: y = 4 is a horizontal line with ________. undefined slope. a slope of 4. a slope of 0. None of the above will make a true statement. Draw a line through y = 4 and parallel to the x axis. Now, what slope is

*asked by Margie on October 14, 2006* -
## Math

1. What is the remainder when 2^190 is divided by 5? How do I approach these questions; do I write it down on paper, or use my calculator(how do I see the remainder?)? 2. Figure: A large right triangle, shortest base in on the ground, shorter height is

*asked by Linda on March 18, 2015* -
## Geometry

The legs of an ironing board are equal in length and bisect each other at the point where they cross. What generalization about parallelograms ensures that the ironing board will always be parallel to the floor, regardless of the height of the board above

*asked by Rmz on January 22, 2010* -
## math

Jackson made a poster in the shape of a quadrilateral. Opposite sides of the poster are congruent and parallel. Which of the following names the shape of Jackson’s poster? A.square B.rhombus** C.rectangle D.trapzoid

*asked by symone on February 15, 2019* -
## Physics

Two springs, each with spring constant 20 N/m, are connected in parallel, and the combination is hung vertically from one end. A 10-N weight is then suspended from the other end of the combined spring. How far does the combined spring stretch as it comes

*asked by Ahmad on October 27, 2014* -
## GEOMETRY

The legs of an ironing board are equal in length and bisect each other at the point where they cross. What generalization about parallelograms ensures that the ironing board will always be parallel to the floor, regardless of the height of the board above

*asked by Twg on August 19, 2009* -
## Maths

A fence that is 4 metres tall runs parallel to a tall building at a distance of 1 metre from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

*asked by Arjun on May 13, 2012* -
## Math

The legs of an ironing board are equal in length and bisect each other at the point where they cross. What generalization about parallelograms ensures that the ironing board will always be parallel to the floor, regardless of the height of the board above

*asked by Anonymous on August 20, 2009* -
## electronics

Which of the following statements is true with reference to an L-C resonant circuit? (1) The impedance of a parallel L-C circuit is low at resonance and higher at frequencies above and below resonance. The impedance of a series circuit is high at resonance

*asked by Anonymous on July 10, 2017* -
## physics

What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)

*asked by Tom on October 29, 2012* -
## physics

What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)

*asked by Tom on October 29, 2012* -
## physics

What force must be applied to push a carton weighing 350 N up a 19° incline, if the coefficient of kinetic friction is 0.45? Assume the force is applied parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)

*asked by Tom on October 30, 2012* -
## physics

*asked by Tom on October 29, 2012* -
## PHYSICS HELP

A box rests on a plank that is inclined to the horizontal. As the angle between the plank and the horizontal increases, does the component of the weight of the box parallel to the plank increase, decrease, or remain the same? Explain your answer. see the

*asked by Suzanne on October 16, 2006* -
## Geometry

I need help with properties of a TRAPEZOID, please! -Are opposite sides congruent AND parallel? -Are opposite angles congruent? -Are the diagonals congruent? -Do the diagonals bisect eachother? I went on many sites to try and find the answers to these

*asked by Jenn on March 7, 2010* -
## Physical science

A create is pulled across a horizontal surface with a force of 100N which makes an angle of 30 degrees with a horizontal.(a)draw a diagram of the horizontal and vertical components of the force.(b)resolve the force in its parallel and

*asked by Nomagcina on January 31, 2013* -
## Precalc

My problem is this: Three friends want to share a circular 14-inch pizza equally by exactly only two parallel cuts. How far from the center must the cuts be? Hint: The pizza is a circle of radius 7 inches. My professor wants a neat and detailed solution

*asked by Tamara on March 6, 2017* -
## Alg 2 hon

An executive flew in the corporate to a meeting in a city 1500 km away. After traveling the same amount of time on the return flight, the pilot mentioned that they still had 300 km to go. The airspeed of the plane was 600 km/h. How fast was the wind

*asked by Suchi on October 9, 2009* -
## Algebra

for each equation tell weather its graph is a horizontal or a vertical line y=-4 write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of the given equation (1,3);y=3x+2

*asked by Pokemoncharzard on December 20, 2016* -
## physics

a man pulls a 500 N block up a plane inclined 30 degrees with the horizontal with a force 300 N parallel to the plane. what net force tends to pull the block up the plane?

*asked by gigi on January 12, 2011* -
## calculus - please help!

If two resistors R1 and R2 are connected in parallel, then the total resistance R measured in ohms is given by 1/R=1/R1+1/R2 If the resistance of R1 and R2 are increasing at 330 and 660 ohms per second respectively, then the rate of increase of R when

*asked by archi on November 7, 2011* -
## Geometry

True or false answer and why according to the diagram. 1. line AE is Parallel to line BC 2. line AB is perpendicular to BC 3. measure of angle ECB is 90 degrees 4. angle BEC and ECB are Supplementary

*asked by some math student on November 3, 2017* -
## calculus

5. Let f be the function given by f(x) = x3- 7x + 6. a. Find the zeros of f b. Write an equation of the line tangent to the graph of f at x = -1 c. Find the x coordinate of the point where the tangent line is parallel to the secant line on the interval [1,

*asked by Yoona on November 7, 2011* -
## Electrotechnics N4

a circuit with 3 resisters {9 ohms 10 ohms and 12 ohms} connected in parallel with the source 150v\50HZ.use kitchoffs law to find the current of the circuit and the current across each resister?

*asked by hlehle on July 12, 2011* -
## Geometry

The 8 rowers in the racing boat stroke so that the angles formed by their oars with the side of the boat all stay equal. Explain why their oars on either side of the boat remain parallel.

*asked by Anonymous on October 24, 2012* -
## Geometry

A shopping center plot of land is in the shape of a parallelogram. Give two other facts about the plot or roads through it. I do not understand can you please explain? I know that A quadrilateral is a parallelogram if and only if it has two pairs of

*asked by purple on April 9, 2010* -
## Physics

You are pulling a suitcase through the airport at a constant speed. The handle of the suitcase makes an angle of 45 degrees with respect to the horizontal direction. If you pull with a force of 7.5 N parallel to the handle, what is the force of friction

*asked by Ashli on September 14, 2010* -
## Math

Jackson made a poster in the shape of a quadrilateral. Each pair of opposite sides of the poster are congruent and parallel. Which of the following names best describes the shape of Jackson’s poster? square rhombus rectangle** trapezoid please help fast!

*asked by InsertNameHere on February 9, 2017* -
## physics

A centreate block mass 25kg is placed on a wooden plant inclined at an angle 32 dergree to the horizontal calculate the force parallel to the inclined plane that would keep the block rest .If the cofficient of fricition between the block and the plane is

*asked by awoyele tobi on November 8, 2016* -
## physics

your boat departs from the bank of a river that has a swift current parallel to its banks. if you want to cross the river in the shortest amount of time, you should direct your boat a.) perpendicular to the current b.) upstream c.) downstream d.) so that

*asked by stu on March 8, 2008* -
## plane geometry

a clock hangs on the wall. the wall is 71 ft and 9 inches long and 10 ft and f inches high. the night watchman notices that the hands of the clock are pointing in opposite directions and are parallel to one of the diagonals of the wall. what was the exact

*asked by jack on June 20, 2017* -
## Physics

Laser light of wavelength 550 nm falls upon a diffraction grating. The slits are 25 micrometers apart and each have a width of 2 micrometers. There is a screen 2 meters away from the diffraction grating, parallel to the grating. A) At what angle does the m

*asked by Lexa on May 3, 2016* -
## Physics

A small block travels up a frictionless incline that is at an angle of 30.0° above the horizontal. The block has speed 4.21 m/s at the bottom of the incline. Assume g = 9.80 m/s2. How far up the incline (measured parallel to the surface of the incline)

*asked by Anonymous on September 21, 2015* -
## plane geometry

a clock hangs on the wall. the wall is 71 ft and 9 inches long and 10 ft and f inches high. the night watchman notices that the hands of the clock are pointing in opposite directions and are parallel to one of the diagonals of the wall. what was the exact

*asked by gwapo on June 20, 2017* -
## Trig

A cylindrical tank, 6 foot in radius, lies on it's side parallel and against the side of a warehouse. A ladder leans against the building, passes over and just touches the tank, and has a slope of -3/4. Find the equation of the ladder and the length of the

*asked by Mary on September 23, 2012* -
## Physics

You are pulling a suitcase through the airport at a constant speed. the handle of the suitcase makes an angle of 45 degrees with respect to the horizontal direction. if you pull with a force of 7.5N parallel to the handle, what is the force of friction

*asked by Jorge on September 15, 2010* -
## Math

Water spraying from a large fountain follows a path modelled by the function h(d) = sa001-1.jpgd2 + 4d, for h ³ 0, where h is the height of the water above the fountain jet and d is the horizontal distance of the water from the fountain jet, both in Water

*asked by Alex on November 3, 2014* -
## Medical billing

What conclusions can you draw about that challenges for record management in small, medium-sized, and large facilities? Do these challenges seem to be more closely tied to the size of the facility or to the number of records typically handled in a day?

*asked by Nickey on April 16, 2009* -
## English (PLEASE HELP!)

What type of figurative language appears in the following sentence? The computer moaned and groaned as it rendered the large video file. A. Simile

*asked by Cassidy on February 4, 2016* -
## World History

On what basis were the Khmer people able to coalesce into a single large kingdom? A. Exploiting the flooding of the Mekong River B. Wealth from mining and timber C. Wealth from its trading fleet D. Development of its pottery industry

*asked by anonymous on October 10, 2011* -
## math

The figure below depicts a racetrack with ends that are semicircular. The length of the track is 880 ft (1/6 mi). Find l and r so that the area of the rectangular portion of the region enclosed by the racetrack is as large as possible. (Round your answers

*asked by Brandi1234 on April 15, 2013* -
## History

Social Darwinists believed that A) a large empire was the key to economic growth. B) the best country would win any international competition. C) each nation should be made up of only one ethnic group. D) military might was the most important measure of a

*asked by Anonymous on July 18, 2012* -
## math

The figure below depicts a racetrack with ends that are semicircular. The length of the track is 660 ft (1/8 mi). Find l and r so that the area of the rectangular portion of the region enclosed by the racetrack is as large as possible. (Round your answers

*asked by Sarah on April 1, 2015* -
## English

What kind of sentences are they and how do I diagram them? Large brains "do" not necessarily "confer" superior intelligence. I ordered materials to use in the craft school "from a supplier" in Minnesota. "This done," I outlined lesson plans for my craft

*asked by Joy on November 29, 2013* -
## statistics

Suppose a large shipment of microwave ovens contained 18% defectives. If a sample of size 228 is selected, what isthe probability that the sample proportion will be greater than 14%? (Round your answer to 4 decimal places)

*asked by colleen on January 23, 2015* -
## research

A quantitative analysis method which aggregates a number of (similar) individual studies into a large data set from which to compute an over all “effect size” (based on similar study procedures and treatments) is commonly known as…?

*asked by helga on January 16, 2013* -
## psy240

One day, Jim and Jack go out and both use large quantities of heroin. Although both did the same amount of drugs, Jack dies from an overdose. Discuss how drug tolerance and conditioning may factor into this outcome. Explain the possible reasons for their

*asked by trudy on October 23, 2009* -
## Introduction to statistics

A researcher would like to estimate the population proportion of adults living in a certain town who have at least a high school education. No information is available about its value. How large a sample size is needed to estimate it to within 0.19 with

*asked by Elizabeth on July 17, 2014* -
## PSY 369

Studies have shown that in large American cities, there is a relationship between the number of violent crimes and the number of stores that sell pornography depicting violence. Is this a positive or negative correlation? Provide an explanation.

*asked by Jay on June 15, 2013* -
## College Physics

A rifle bullet with a mass of 17.5 g traveling toward the right at 293 m/s strikes a large bag of sand and penetrates it to a depth of 23.6 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.

*asked by JB on October 9, 2012* -
## DBA

A quantitative analysis method which aggregates a number of (similar) individual studies into a large data set from which to compute an over all “effect size” (based on similar study procedures and treatments) is commonly known as

*asked by Younis on September 14, 2013* -
## Science

The inner planets- Mercury, Venus, Earth and Mars- were formed by a. Supernovas b. repeated collisions of asteroid sized debris (My Answer) ****** c. masses of cold hydrogen and helium d. collisions of large galaxies

*asked by Sam on September 2, 2014* -
## Physics

Suppose a nucleus of 93X236 fissions into two fragments whose mass ratio is 0.37:0.63. With the aid of the drawing, estimate the energy (in MeV) released during this fission. The drawing Shows A large. The A1 smaller the A2, A2 is nearly double the size of

*asked by Beth on August 3, 2012* -
## physics

Pigeons have multiple-domain magnetite magnets within their skulls that are connected through a large number of nerves to the pigeon's brain. How does this aid the pigeon in navigation? (Magnetic material also exists in the abdomens of bees.)

*asked by Alice on May 16, 2012* -
## physics

A rifle bullet with a mass of 16.5 g traveling toward the right at 285 m/s strikes a large bag of sand and penetrates it to a depth of 22.6 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.

*asked by Sara on June 18, 2014* -
## Biology

A large number of deer once lived on the Kalibab Plateau north of the Grand Canyon in Arizona, USA. In 1907 their predators, wolves, coyotes and pumas, were killed to protect the deer. What do you think happened after this?

*asked by Stoof on June 28, 2015* -
## chemistry

briefly explain why excess HCl and NaOH solutions must be collected for treatment before disposal, but the titration solution from a completed titration can be safely poured into the drain, diluting with a large amount of water.

*asked by Anonymous on March 23, 2011*

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