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August 31, 2015

Search: minimum length of the mirror needed to see the whole body at any distance

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Algebra 2
Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100cm and a return swing of 99cm. a.)On which swing ...
February 19, 2015 by Nicole

Algebra 2
Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100cm and a return swing of 99cm. On which swing will ...
February 23, 2015 by Nicole

Physics
Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally weightless. Take the distance between ...
December 17, 2007 by Lindsay

Math (Calculus)
Tower 1 is 60 ft high and tower 2 is 20 ft high. The towers are 140 ft apart. A guy wire is to run from point A to the top of each tower. [See a picture of this situation on page 274 of the textbook.] How many feet from tower 1 should point A be so that the total length of guy...
November 20, 2013 by Alexis

Algebra Help
A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 miles at a certain rate; traffic then increased and for the next 6 miles he averaged 10 miles per hour less than his original speed; then traffic eased up and he traveled the ...
October 25, 2013 by Jane

Math
You are bending a wire to make a coat hanger. The length of the wire is 88 centimeters, and 20 centimeters are needed to make a hook hanger. The triangular portion of the hanger is an isosceles triangle. The length of one leg of this triangle is 3/5 the length of the base. ...
November 1, 2011 by Steven

Physics
Why is the image distance equal to the focal length when the object is a very great distance from a simple thin converging lens? IT is that because all light converges on the focus. THe incoming rays are all parallel with the optic axis.
April 10, 2007 by Caleb

Algebra
Decreasing cube. Each of the three dimensions of a cube with sides of length s centimeters is decreased by a whole number of centimeters. The new volume in cubic centimeters is given by V(s) equals s power of 3 - 13s power of 2 + 54s - 72. a) Find V(10). b) If the new width...
August 6, 2010 by Simone

physics
If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ...
October 22, 2012 by laurie

physics
An observer uses a 10 sided mirror to measure the speed of light. A clear image occurs every one-tenth of a rotation when the mirror is rotating at 4.31x10^2 rev/s. The total path of the light pulse is 60 km, measured from the light source to the mirrors and reflected back to ...
September 20, 2013 by sam

Science Easy 2 Points!
Which of the following best explains why it is nessecary for the body to eliminate waste? a) to allow the body to maintain a certain size b) to keep the body's internal enviroment in balance c) to make room for nutrients coming in d) to reduce unpleasent odors What happens to ...
December 12, 2013 by Billabong

Science
Object distance, image distance, and radius of curvature are ____ for curved mirrors. interdependent independent directly related unrelated A _________(__________ A B ( F In the diagram shown above, the image of object A would be (The diagram may be a bit confusing, so sorry. ...
January 9, 2012 by Anonymous

Math
Which of the following would require finding the area? A. Determining the number of sugar cubes in a box B. Determining the amount of paper needed to cover a bulletin board C. Determining the length of trim needed to go around the edge of a bulletin board D. Determining the ...
January 30, 2012 by Andrew

Physics
A body travels from rest with acceleration 8m/s(squared)Find its velocity when it has covered a distance of 100 meter?
August 24, 2014 by Ruth

vn college
sodium has a body centred packing.If a distance between two nearest atom is 3.7A,then lattice parameter is ?
July 3, 2015 by Saraswat

physics
an airplane has a takeoff speed of 80 meters per second which it reaches 35 seconds after starting from rest. What is the minimum length of the runway?
September 29, 2009 by shirley

Pre Calc
I do not see why I got two different equations for my answer A weight attached to the end of along spring is bounicng up and down. As it bounces, its distance from the floor varies sinusoidally with time. You start a stopwatch. When the stopwatch reads 0.3 s, the weight first ...
December 10, 2009 by Joe

SCI/241
Hello, I have to answer this question for my assignment. Compare and contrast how different electrolytes-sodium, potassium, and chloride-function in the body. This is what I have so far but I am not sure if this is the whole answer. The Electrolytes in your body are sodium and...
December 10, 2010 by Nikol

statistics
A researcher wishes to estimate the proportion of adults living in rural areas who own a gun. He wishes to achieve a margin of error of 2.8%. What is the minimum sample size needed?
July 28, 2014 by liz

math
Draw a venn diagram to illustrate the following. In a shop 50 cars were inspected and it found that 23 needed new brakes and 34 needed new tires. 3 needed no services at all how many needed new brakes and new tires? How many only needed brakes? Please help
December 9, 2011 by kia

Algebra
1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: w=Cr -2 where C is a ...
August 13, 2011 by Sue Bonds

Physics
A small first-aid kit is dropped by a rock climber who is descending steadily at 1.9 m/s. After 2.5 s, what is the velocity of the first-aid kit, and how far is the kit below the climber? My question is, how can you determine how fast/far the kit is going???? If the kit is ...
September 17, 2006 by Help again?? Becca

physics
Background knowledge: For cars traveling along dufferin,the speed is 60km/h. The distance to cross the intersection is 34m. Assume the length of a typical car is 4.5m. For safety reasons, the Ministry of Transportation recommends that vehicles stop with an acceleration no ...
July 12, 2014 by saarah

College physics-oscillations
A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance △x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume that the vertical extension...
December 4, 2010 by Marco

Physics
In the rope climb, a 68 athlete climbs a vertical distance of 9.0 in 13 . What minimum power output was used to accomplish this feat? In Watts
October 17, 2010 by Eden

Physics
In the rope climb, a 68 kg athlete climbs a vertical distance of 9.0 m in 13 s. What minimum power output was used to accomplish this feat? In Watts
October 17, 2010 by Nikohl

Physics
Given an angle of 30 degrees, find the minimum initial speed of a cannon ball that travels in a horizontal distance of 15000 mi.
August 25, 2014 by Kadu

PHYSICS
A body of mass 100.0g is attached to a hanging spring whose force constant is 10.0 kN/m. The body is lifted until the spring is in its unstretched state. The body is then released. Using the law of conservation of energy, calculate the speed of the body when it strikes a table...
September 13, 2006 by Maggie

physics
a cyclist start from rest and accelerate uniformly to achieve a velocity of 12m/sec in 5 sec.immediately he applied brake and come to rest in next 4 sec .calculate a)distance traveled during acceleration b)distance traveled during retardation. c)total displacement during whole...
May 28, 2012 by parul

Genetics
Hi, I'm just trying to learn gene mapping and I'm a bit confused as to why the answer this question is D. I just don't get it, and I'd really appreciate it if someone could help work it through so I'd understand how they got that answer to be wrong and the other one's to be ...
November 29, 2008 by Katie

Physics ~ missed this lecture pls help
A thin converging lens of focal length 9.82 cm forms an image of an object placed 18.5 cm from the lens. Find the image distance. Answer in units of cm. What is the magnification for an object distance of 18.5 cm? Find the location of the image for an object distance of 4.06 ...
April 28, 2011 by cr

math
2 hours after a given drug has been administered there is only 75% of it left in the body. a. What percentage of it leaves the body every hour (find the hourly decay rate)? b. What is the continuous decay rate? c. How long until 50% has left the body? d. How long until 99% of...
November 21, 2011 by Lindsey

Physics
Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be ...
December 2, 2011 by Allie

Physics
How much work is needed to lift a 3 kg mass a distance of 0.75 m?
February 27, 2011 by Lesley

Math 11
I need help on this math problem. The width of a certain painting is 5cm less than twice the length. The length of the diagonal distance across the painting is 107cm. Find the length and width. Round your answer to 2 decimal places. How should I set up for this problem? I was ...
January 12, 2012 by Need Help

Calculus
A rancher wants to build a rectangular pen with an area of 150 m2. Let W be the width of the pen and L be the length of the pen. a. Find an equation for the perimeter P in terms of W and L . b. Use the given area to write an equation that relates W and L . c. Find the pen ...
May 26, 2013 by Lily

Physics
An asteriod is found a distance from the sun equal to 32 units times the earth's distance. What will be the length of time in years required for this asteriod to make one revolution around the sun?
March 10, 2012 by Sam

Physics
If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 14 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)
March 18, 2014 by Hao

5th grade Math
A rectangle has a perimeter of 12 m. If each side is a whole number of meters, what are the possible dimensions for the length and width? List them and explain your answer.
March 11, 2010 by Sammi

math
A rectangle has a perimeter of 12m. if each side is a whole number of meters, what are the possible dimensions for the length and width? List them and please explain your answer.
February 27, 2012 by shion

Calculus
A parcel delivery service will deliver a package only if the length plus girth (distance around) does not exceed 84 in. What are the radius, length and volume of the largest cylindrical package that may be sent using this service?
August 27, 2011 by Amanda

Physics
A drop of water on a countertop reflects light from a flower held 2.8 cm directly above it. The flower's diameter is 1.7 cm, and the diameter of the flower's image is 0.17 cm. What is the focal length of the water drop, assuming that it may be treated as a convex spherical ...
November 17, 2011 by Kristi

math
1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
October 29, 2011 by gaurav

math
1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
October 29, 2011 by gaurav

math
1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
October 29, 2011 by rahul

Algebra
A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 minutes at a certain rate; traffic then increased and for the next 6 minutes he averaged 10 miles per hour less than his original speed; then traffic eased up and he traveled the ...
October 24, 2013 by Jane

physicis
A body of 8.10 kg mass makes an elastic collision with another body at rest and continues to move in the original direction, but with one-fourth of its original speed. What is the mass (in kilograms) of the struck body?
April 24, 2013 by PCm

Science
A body of mass 17.25kg rest on a smooth horizontal table. The coefficient of friction between the body and the table is 0.34. What is the horizontal frictional force that will make the body just slide.
August 17, 2013 by Charity

Newtons Law of Cooling
using Newton's Law of Cooling: At 10:30 am the medical examiner arrives at a crime scene where a dead body has been found. The temperature of the body is 80 degrees F and the thermostat for the room in which the body was found is set at 68 degrees F. One hour later the ...
September 4, 2014 by Tracy

English
Hello. I will really appreciate some help. 1)Would you use the article in the sentence "The UN called on Egypt to end (the) violence and bloodshed"? 2)Is it correct to say: a)the British newspaper Daily Mirror; or is it b)the British newspaper The Daily Mirror? 3)Which ...
December 4, 2011 by Ilma

statistics
Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 F and a standard deviation of 0.62 F (based on data from the University of Maryland researchers). Is a body temperature of 99.00 F unusual? Why or why not? Fifty adults are ...
April 2, 2010 by anonymous

Math
A community garden is sectioned off into 12 congruent individual plots with rope as shown in the diagram. Find the total length of rope used. Then find the total length of rope needed if the garden is sectioned off into six congruent rectangles. width-4yd length-3rd
April 20, 2011 by Matty

Physics - Optics
A photographic slide is to the left of a lens. The lens projects an image of the slide onto a wall which is a distance of 5.94 m to the right of the slide. The image is larger than the size of the slide by a factor of 82.0. How far is the slide from the lens? Is the image ...
July 17, 2007 by Tifani

Minimum Concentrations - Urgent help!
What is the minimum concentration? Determine the minimum concentration of the precipitating agent on the right to cause precipitation of the cation from the solution on the left. 8.0 x 10^-2 CaI2, K2SO4 1.5 x 10^-3 AgNO3, RbCl The Ksp values for both are Ksp = 2.4*10-6 for ...
March 22, 2013 by Amy

Gen Chem
Barium has a radius of 224 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell?
April 19, 2010 by gagaga

Physic
A person weighs 872 N in air and has a body fat percentage of 20.7%. a. What is the overall density of this person's body? b. What is the volume of this person's body? c. Find the apparent weight of this person when completely submerged in water.
April 18, 2010 by Ann

Math 207
If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 35 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)
May 2, 2012 by Anonymous

English
I have a few doubts regarding the following questions. Can you help me, please? 1)Provide a definition of "poetry" including its most important elements. 2)Briefly refer to the description of the mirror as provided by Sylvia Plath in her poem "Mirror"? What does the mirror ...
November 14, 2010 by Franco

English
1. He killed him. 2. He killed himself. (Can we use both sentences. I think they have different meaning.) 3. You should take care of yourself. 4. You shoud take care of you. (Are both OK? Is #4 wrong?) 5. He looked at himself in the mirror. 6. He looked at him in the mirror. (...
December 7, 2009 by rfvv

Physics
Body A has twice the mass and three times the specific heat of body B. They are supplied with equal amounts of heat. Body A experiences a temperature change ΔT. What change in temperature is experienced by body B? Question 2 options: A) ΔT B) 3ΔT/2 C) 2ΔT/...
August 15, 2011 by Skylar

algebra1/McDougal Littell
a page of pictures for a yearbook is 8 1/2 inches by 11 inches. The space between the pictures is 3/16 inch. How high can each picture be to fit seven down the length of the page? since the the length of the page is 11 inches, and there has to be seven pictures down the length...
November 16, 2006 by derrick

Math
Does -3/4 belong in the group, integers and rational numbers. in order it goes:Natural #s-1,2,3,4... Whole #s-0,1,2,3,4... Integers-whole #s & opposites(negatives) Rational #s-numbers written in fractions or decimals Please read: (Broken Link Removed) -3/4 is a rational number...
December 14, 2006 by Katie

Physics
Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally weightless. Take the distance between ...
December 16, 2007 by Lindsay

Physics
The boom weighs 2450 and is attached to a friction less pivot at its lower end. It is not uniform; the distance of its center of gravity from the pivot is 39.0 of its length. What is the tension in the guy wire? Link to picture of problem which is needed to solve the problem...
April 27, 2013 by John

Physics
The boom weighs 2450 and is attached to a friction less pivot at its lower end. It is not uniform; the distance of its center of gravity from the pivot is 39.0% of its length. What is the tension in the guy wire? Link to picture of problem which is needed to solve the problem...
April 28, 2013 by John

chemistry
How would I find amount of P in a 100 liter solution. The liter of solution contains nitric and sulfurous acid and possibly a dissolved body... the body weighs 70 kg and there are 6.3 ppt of phosphorous in a human body.
October 27, 2013 by Anonymous

please help geometry
you need to find the length of a broken automitive belt. the belt ran around 2 pulleys whose centers were 11 in apart. one of the pulleys is 4" dia. and the other is 6" dia. what is the totoal length of the belt needed to connect thr pulleys?
April 25, 2013 by ALICE

Chem
Based on the number of atoms per unit cell and the mass of the atom, the mass of the unit cell can be calculated. The density of the unit cell and the material as a whole can be determined from the mass and the volume of the unit cell as. D= M/V The usual units of density are ...
January 16, 2009 by Juliee

Management
Why is management necessary? What are the advantages and disadvantages of delegation? Just as the brain coordinates the functions of the body, effective management is needed to coordinate the functions of a business to make it productive. However, since this is not my area of ...
July 6, 2006 by Laverne

maths
1) The 17th hole at the famous st andrews golf course is 420 m in length.How long will it appear on a plan of the course of scale 1:8000? 2) On a map of scale 1:15000,the distance between the buckingham palace and brixton underground station is 31.4cm. what is the actual ...
February 27, 2011 by sweety

Accounting: Lock Box System
What minimum reduction in the time to collect and process each check is needed to justify use of the lock box system? If 400 payments per day, 2,000 average payment size, Bank charge $.40 per check and interest rate is .015 per day. The answer depends on the value of time. For...
October 10, 2006 by Lola

math (distance problem)
The points A, B, C, D, and E are located on a straight line in order. The distance from A to E is 20cm. The distance from A to D is 15cm. The distance from B to E is 10cm. C is halfway between B and D. Find the distance from A to C.: * 2.5 cm 5 cm 10 cm 12.5 cm
September 22, 2007 by anonymous

physics
A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
November 26, 2006 by Dee

Math
1. How many bricks each measuring 25cm11.25cm6cm, will be needed to build a wall of 8m6m22.5? 2. what decimal of an hour is a second? 3. without a calculator, 0.040.0162 is equal to...... 3. (0.04)^ -1.5 4. if m and n are whole numbers such that m^n=121, the value of (m-1...
April 22, 2015 by Bright

mechanics of machines
A body of weight 500N is lying on a rough plane inclined at angle 3.2 with the horizontal. It is supported by an effort p, parallel to the plane. Determine the minimum and maximum value of P, for which the equilibrium can exist if the angle of friction is 0.342
April 10, 2012 by mustapha

Polytechnic soko nigeria
A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20
April 12, 2012 by Musty

Polytechnic soko nigeria
A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20
April 12, 2012 by Musty

chem
According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?
September 5, 2010 by ryan

English
1. I want to see the movie. 2. I want to see the film. 3. I want to see the motion picture. 4. I want to see the animated picture. ------------------- Ae they all the same in meaning? What is the difference among them?
December 23, 2014 by rfvv

English
Which of the following sentences is in the passive voice? A. I just don't see the point. B. I want my MTV. C. A whole case of beer gets drunk every Satyrday night. D. Please don't tell me I missed it. I think its D
April 14, 2011 by robin

French - SraJMcGin/Frenchy
Aimes-vous peinture " Girl before a Mirror - Picasso? Pourquoi ou pourquoi pas? English: [Yes I like the painting "Girl before a Mirror by Picasso because it is really colorful, and the reflection of the girl is something totally different, its strange but cool at the same ...
April 1, 2011 by Karley

statistics
The scores on a test for a very large class is normally distributed with mean 64 points and standard deviation 6 points. The department decides to award A to the highest 5% scores. What is the minimum score to receive an A for the course? Round your answer (down) to nearest ...
July 11, 2012 by Anonymous

General Physics
A block sliding on a horizontal surface has an initial speed of 0.5 m/s. The block travels a distance of 1 m as it slows to a stop. What distance would the block have traveled if its initial speed had been 1 m/s? 1. 2 m 2. 1 m 3. more information is needed to answer the ...
July 26, 2013 by Charles

math
How many 1-inch cubes are needed to create a cube with a side length of 7 inches?
March 9, 2015 by Stevenrocks7584

Physics
A beam, B1, of mass M1 = 0.6887 kg and length L1=1 m is pivoted about its lowest point at P1. A second beam, B2, of mass M2=0.200 kg and length L2=0.200m is suspended (pivoted) from B1 at a point P2, which is a horizontal distance d=0.550, from P1. To keep the system at ...
May 2, 2011 by Catherine

college chemistry
According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?
September 5, 2010 by ryan

Physics
I still cannot solve this problem: Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from each celestial body exactly cancel, leaving the craft literally ...
December 17, 2007 by Lindsay

physics
A uniform plank of length 5.6 m and weight 203 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begins to ...
June 1, 2007 by meredith

physics
a spacecraft has an acceleration of magnitudes 5.0g what distance is needed for it to attach a velocity of 10 km/s?
August 8, 2010 by jether

Calc
A body of an unknown temperature was placed in a room that was held at 30F. After 10 minutes, the body's temperature was 0F, and 20 minutes after the body was placed in the room the body's temperature was 15F. Estimate the body's initial temperature. Thank you!!
January 6, 2011 by Erica

Physics
A youngster shoots a bottle cap up a 15.0 inclined board at 1.92 m/s. The cap slides in a straight line, slowing to 0.95 m/s after traveling some distance. If the coefficient of kinetic friction is 0.35, find that distance. I still don't quite understand this one. How do I ...
December 5, 2007 by Lindsay

physical science
Which of the following four bodies has the greatest kinetic energy? a. A body of mass 1 kg moving with speed 1000 m/s. b. A body of mass 2 kg moving with speed 50 m/s c. A body of mass 3 kg moving with speed 50 m/s d. A body of mass 50 kg moving with speed 2 m/s e. A body of ...
December 15, 2011 by Fonda

Math
Each of the three dimensions of a cube with sides of lenth s centimeters is decreased by a whole numer of centimeters. The new volume is cubic centimeters is given by V(s)=s^3-13s^2+54s-72. a) Find V(10) b) If the new width is s-6 centimeters, then what are the new length and ...
September 12, 2010 by Nina

Statistics
In recording the self-reported lengths of a particular body part in a sample of male undergraduates, the largest was claimed to be 20 cma full 3 standard deviations from the mean length for the sample. The shortest alleged length was only 10 cm, which was equivalent to ...
November 3, 2012 by susan

math
The legs of a right triangle are 13 inches and 9 inches. Find the length of the hypotenus to the nearest whole number.
December 15, 2009 by jw

10th grade
Triangle ABC is an equilateral triangle.AD=10 What is the length of CD? Give your answer to the nearest whole number.
May 27, 2010 by it's me

Perimeter
A rectangle has a perimeter of 12m. If each side is a whole number of meters, what are the possible dimensions for the length and width?
February 8, 2012 by Jackie

maths
a triangle has sides of length 7 cm ,15cm and x cm. If x is an interger find (i) the minimum value of x (ii) the maximum value of x
November 2, 2013 by Virginia

5th grade math
The moon is about 240.000 miles from Earth. What is this distance written as a whole number multiplied by the power of ten?
September 13, 2012 by Jordan

Physics
You are trying to photograph a bird sitting on a tree branch, but a tall hedge is blocking your view. However, as the drawing shows, a plane mirror reflects light from the bird into your camera. For what distance must you set the focus of the camera lens in order to snap a ...
April 10, 2013 by Tim

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