Monday

February 8, 2016
Number of results: 79,842

**Algebra 2**

saturn is approximately 1.4 x10^9 kilometers from the Sun. If light travels at approximately 3.0 x 10^5 kilometers per second, how long does it take light from the Sun to reach Saturn? Express your answer in scientific notation.
*July 6, 2008 by Mary*

**Algebra II**

The problem states: Saturn is approximately 1.4x 10 to the 9th power kilometers from the Sun. If light travels at approx. 3.0 x 10 to the 5th power kilometers per second, how long does it take light from the Sun to reach Saturn? Express your answer in scientific notation. The ...
*February 3, 2008 by Lucy*

**pre-algebra**

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...
*November 13, 2008 by Extra homework*

**my pre-algebra questions**

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...
*November 13, 2008 by NObody answers*

**8th grade**

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...
*November 13, 2008 by 8th grade*

**astronomy**

1. The radius of the Sun is 7 X 10^5 kilometers. Use powers of ten to show that the Sun's radius is about 100 times the Earth's radius. 2. Given that an astronomical unit is 1.5 X 10^8 kilometers and a light-year is about 10^13 kilometers, how many AU are in a light-year? 1 x ...
*April 3, 2007 by John*

**scientific notation?**

A) light travels at approximately 186,000 miles per second. approximately how far will it travel in 1 minute? express your answer in scientific notation B) the sun is approximately 93,000,000 miles from the earth. about how long does it take light to travel from the sun to the...
*November 13, 2008 by 8th grade*

**algebra**

1)Simplify:(3x^0y^-4)(2x^2y)^3 answer=6x^6 over y 2)Simplify:2x^2y^5z^-4 over 8x^6yz^3 answer= y^4 over 4x^4z 3)Saturn is 1.4 x 10^9 kilometers away from the sun. If light travels 3.0 x 10^4 km per second,how long does it take light from the sun to reach saturn? Express the ...
*August 1, 2007 by erin*

**Math**

The planet Neptune is approximately 4.5 * 10^9 kilometers from the sun. The planet Venus is approximately 1.1 * 10^8 kilometers from the sun. Which is the best estimate of how many times as far from the sun Neptune is as Venus? A. about 4 times as far B. about 40 times as far ...
*April 11, 2015 by Kimbo*

**math**

light from the sun takes approximately 8 minutes to reach earth. If the light travels at a speed of 3 x 10 raised to 8 meters / second, calculate to 3 significant figures the distance from the sun to the earth
*September 29, 2013 by chetan*

**physics**

light travels at a constant speed of 3x10^11 centimeters/sec. how long does it take light to reach the earth a distance of 1.5x10^8 kilometers give your answer in seconds and minutes.
*October 15, 2011 by help*

**Chemistry 101 **

The distance from the Earth to the sun is approximately 9.37 x 10^7 miles. How long does ti take for light from the sun to reach the earth? Speed of light is 3.00 x 10^8 m/s. Show work.
*January 19, 2016 by Lilly*

**Chemistry 101 **

The distance from the Earth to the sun is approximately 9.37 x 10^7 miles. How long does it take for light from the sun, to reach the earth? Speed of light is 3.00 x 10^8 m/s. Use dimensional analysis to solve.
*January 21, 2016 by Lilly*

**math**

the distance from the sun to earth is about 1.5x10^11 meters. suppose light travels at a speed of 3x10^8 meters per second. About how long does it take light from the sun to reach earth? PLEASE HELP!!!
*December 26, 2014 by shirly*

**Math**

Two airplanes leave St. Louis at the same time and fly in opposite directions. If one travels at 500 kilometers per hour, and the other at 600 kilometers per hour, how long will it take for them to be 1925 kilometers apart?
*October 29, 2013 by Miah*

**Math**

Two airplanes leave St. Louis at the same time and fly in opposite directions. If one travels at 500 kilometers per hour, and the other at 600 kilometers per hour, how long will it take for them to be 1925 kilometers apart?
*October 29, 2013 by Miah*

**math**

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20 kilometers per hour?
*January 12, 2013 by Larry*

**math**

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20 kilometers per hour?
*January 12, 2013 by Larry*

**math**

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20 kilometers per hour?
*January 12, 2013 by Larry*

**math**

Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers per hour for the first 10 kilometers, and then at 15 kilometers per hour for the rest of the trip, how many minutes more will it take him then if he travels the entire trip at 20 kilometers per hour?
*January 13, 2013 by Larry*

**Chemistry**

Light travels at a speed of 3.00 times 10^10 cm/s. What is the speed of light in kilometers/hour?
*February 21, 2014 by Kelsi*

**Math**

A probe launched from Earth to Mars is traveling at an average speed of 1.8 * 10^4 kilometers per hour. If the distance between Earth and Mars is approximately 2.25 * 10^6 kilometers, about how many hours will it take the probe to reach Mars? PLEASE EXPLAIN YOUR REASONING
*April 11, 2015 by Kimbo*

**Math**

The Pioneer 10 spacecraft passed the planet Jupiter on December 12, 1973, and exited the solar system on June 14, 1983. The craft traveled from Mars to Jupiter, a distance of approximately 1 billion kilometers, in one year and nine months. a.Calculate the approximate speed of ...
*November 17, 2013 by Aubrey*

**3**

An astronomy student is studying the sun. While monitoring her equipment, she observes a solar flare. She then observes the reflection of the solar flare off of a passing satellite and with her equipment she is able to determine that the reflected light arrives from the ...
*September 11, 2014 by joe*

**math**

when the temperature is 68 degrees F, the speed of sound in the air is approximately 343 meters per second. Approximately how many kilometers does sound travel in five seconds
*May 13, 2014 by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*

**3**

t= 5.79 (a) There are approximately 1609 meters per mile. If the sun is 93 million miles away, how far is the sun in kilometers to two significant figures.
*September 11, 2014 by joe*

**radio message**

The nearest star beyond the sun is Alpha Centauri, 4.2 x 1016 meters away. If we received a radio message from the star today, how long ago would it have been sent? The distance that light travels in a vacuum in one year, approximately 9.46 trillion (9.46 × 1012) kilometers ...
*June 28, 2005 by Jarrad Schomaker*

**science question?**

can someone explain this to me? When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometers does sound travel in five seconds?
*April 2, 2014 by matt*

**math 7th**

When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometers does sound travel in five seconds? Can some one help with the steps?
*April 24, 2013 by Chris*

**math**

two horses gallop off in the sam direction. Trigger travels25 kilometers per hour. Silver travels 30 kilometers per hour. How long before the horses are 3 kilometers apart?
*November 21, 2011 by jordan*

**Physics**

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
*August 28, 2012 by Nicole*

**Physics**

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
*August 28, 2012 by Nicole*

**Physics**

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
*August 28, 2012 by Nicole*

**Physics**

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
*August 28, 2012 by Nicole*

**chemistry**

Light travels at a speed of 3.00 * 10 to the power of 10 cm/sec. What is the speed of light in Kilometers per hour?
*April 27, 2008 by tina*

**Chemistry**

The velocity of light is 1.86 × 108 mi/hr. The distance of Mercury from the Sun is approximately 5.78 × 107 km. How many minutes will it take for light from the Sun to travel to Mercury?
*February 3, 2011 by Ang*

**Algebra**

1. A car travels 20 kilometers per hour faster than a second car. The first car covers 180 kilometers in the same time the second covers 135 kilometers. What is the average speed of each car? 2. The tens' digit of a two-digit number is one more than its units' digit. If the ...
*October 11, 2011 by cassie*

**Math**

Light travels at a speed of about 186,000 miles per second. Sound travels at a speed of about 1,087 feet per second. How many times faster light travels than sound.
*November 3, 2010 by Rose*

**Geometry**

A satellite has-recently been placed in a nearly circular orbit 2000 kilometers above the earth’s surface. Given that the radius of the earth is approximately 6400 kilometers and that the satellite completes its orbit in 12 hours, calculate the speed of the satellite in ...
*May 17, 2011 by Keenan*

**5th grade**

one light year is about 9 trillion kilometers . arctus is a star that is 37 light years from earth.if you are 11 years old now,how old will you be when light that is leaving arcturus today reaches earth. how far in kilometers willit have traveled .sow your work.
*April 25, 2010 by cheyenne*

**chemistry**

Light travels at 3.00 x 10^8 m/s. If the starlight from the Unicorn galaxy takes 1 year 47 days and 2 hours to reach us. How far away is it in kilometers?
*May 13, 2014 by aira*

**physics**

light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?
*August 9, 2015 by rob*

**math**

How many kilometers can light travel in 1 year? How many kilometers can light travel in 365.25 days? Show me Thank You
*February 1, 2012 by glenn help help help*

**Science**

What is a light year? How long does it take for light to reach the Earth from the Sun?
*September 21, 2010 by Jim*

**math**

Mercury is 5.79 x 10^7 km from the sun. Light travels at a speed of 3.0 x 10^5 km/s. How long would it take for light to travel from the sun to Mercury? I have to answer this problem using scientific notation.
*September 26, 2011 by Susan*

**math**

I need help on this question. Can someone help me get through with these question The area of canada is approximately 1x10(Exponent)7, and the area of Mexico is approximately 2x10 (exponent)6 square kilometers. The area of Canada is approximately how many times the area of ...
*January 21, 2015 by D*

**astrophysics**

1) Every second the Sun outputs 3.90* 10^26 Joules of energy. Power is energy output per unit time and is given in units of Watts (W) where 1 W = 1 Joule per second. The Sun's power output is therefore 3.90*10^26 Watts. This is called the solar luminosity. As this energy ...
*November 24, 2009 by Easha*

**astrophysics**

1) Every second the Sun outputs 3.90* 10^26 Joules of energy. Power is energy output per unit time and is given in units of Watts (W) where 1 W = 1 Joule per second. The Sun's power output is therefore 3.90*10^26 Watts. This is called the solar luminosity. As this energy ...
*November 24, 2009 by Easha*

**Science**

Earth travels around the sun at a spreed of 30,000 meters per second. Express this in kilometers per hour.
*May 15, 2014 by Phillip*

**Math**

How long did it take the trip if Jay drove 340 kilometers at the average rate of 68 kilometers per hour?
*March 8, 2012 by Antonio*

**algebra**

the speed of light is about 1.86 x 10^5 miles per second. find the speed of light in (a) km per second, (b) km/min, (c) m/h. (a mile is approximately 1.61 km.)
*October 29, 2012 by sella*

**Science**

One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from Earth. If you are about 11 years old now, how old will you be when light that is leaving Arcturus today reached Earth? How far, in kilometers, will it have traveled? please explain ...
*December 16, 2013 by Jane*

**math**

Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?
*February 23, 2012 by mercy*

**MATH**

Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?
*February 23, 2012 by mercy*

**Science 2**

One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from earth. If you are about 11 years old now , how old will you be when light that is leaving. Arcturus today reaches Earth ? How far, in kilometers, will it have traveled? Show your work...
*May 10, 2014 by Jenny 2*

**algebra**

David walked 19 kilometers. The first part of the walk was at 5kph and the rest at 3kph. he would have covered 2 kilometers less if he had reversed the rates, that is, if he had walked at 3kph and at 5kph for the same times that he actually walked at 5kph and 3kph, ...
*December 7, 2008 by jackie*

**CHEMISTRY! HELP!**

I have a hard time getting this someone help me? Astronauts often use the unit light year to express intergalactic distances. If light travels 3.00 x .10^10 cm/s and one year is defined as 365 days, how many kilometers does light travel in one year?
*October 6, 2012 by Kyle*

**Math**

Light travels approximately one foot in a nanosecond. How far does light travel in a microsecond?
*January 7, 2013 by Not telling you*

**math**

the distance between new york city and boston is 189.9 miles as the crow flies. how far is it in kilometers? 117.7 kilometers 305.7 kilometers 417.8 kilometers 1,899 kilometers
*November 7, 2015 by tanya*

**science**

the distance from the earth to the moon is 240000 miles. if the speed of light is 2.998 x 10^8 meters per second, how long does it take for light reflected from the moon to reach our planet?
*October 29, 2012 by Paco*

**Math**

It takes 5 1/3 minutes for light from the sun to reach earth. The Moon is closer to earth, so it,s light reaches earth faster about 5 19/60 minutes faster than from the sun. How long does light from the moon take to reach earth.
*January 10, 2012 by Nicole*

**Science**

The speed of light is 3 x 10 to the 8th power meters per second. If the sun is 1.5 x 10 to the 11th power meters from earth, how many seconds does it take light to reach the earth?
*December 15, 2014 by MG*

**Science**

The Milky Way has a radius of approximately 100,000 light years. How many miles is that? How long would it take you to travel across our galaxy if you were traveling at 50% the speed of light (show work)?
*November 19, 2013 by Harold*

**Physics**

light travels at a constant speed of 3x10*11 cm/sec. how long does it take light to reach the earth a distance of 1.5x10*8 km. give the answers in seconds and minutes.
*October 16, 2011 by Dan*

**physics**

light travels at a constant speed of 3x10^11 cm /sec how long does it take light to reach the earth a distance of 1.5x10^8 km give your answer in seconds and minutes.
*October 17, 2011 by Helppppp*

**Maths**

the speed of light is 3 * 10^ 8m/s. Jupiter is 778 million km from the sun. Calculate the number of minutes it takes for sunlight to reach Jupiter ? A star is 300 lights away from Earth. If the speed of light is 3 * 10^5 km/s. calculate the disatance from the star to Earth. ...
*November 26, 2007 by YOYO*

**Math**

Atmospheric pressure changes as you rise above earth's surface. At an altitude of h kilometers, where 0<h<80, the pressure P is newtons per square centimeter is approximately modeled by the function P(h)=10.31e^(-0.116h). What is the approximate pressure at 50 kilometers...
*November 8, 2011 by Dawn*

**math**

Samantha’s speedometer reads in kilometers per hour. If the legal speed limit is 55 mi/h, how fast can she drive? How should I set this up? 160 kilometers per hour is 100 miles 55 miles is 88 kilometers. Here in New Zealand we are in kilometers
*May 28, 2007 by Ron*

**science**

Which statement explains why light from sun can warm up water in a glass? a)light travels very fast. b)light travels in straight lines. c)water reflects light energy. d)water absorbs light energy.
*December 2, 2013 by Anonymous*

**physics **

Suppose the Sun is 1.52669 × 108 km from Earth. The speed of light is 2.99792 × 108 m/s. How long does it take for its light to reach us? Answer in units of min
*April 8, 2013 by hannah *

**Math**

The record for the fastest speed on a bicycle is 133 kilometers per hour. How long would it take a person traveling at this speed to travel 365.75 kilometers
*January 15, 2016 by Sarah*

**Math/Algebra**

Delivery company charges $10 plus 40˘ per kilometer or part of a kilometer. Find the cost for a trip of: a.5 kilometers b.7.5 kilometers c.3.2 kilometers d.Graph the ordered pairs (kilometers, cost). Is this a function?
*January 29, 2014 by Judy Conrad*

**math**

The record for the fastest speed on a bicycle is 133 kilometers per hour. How long would it take a person traveling at this speed to travel 365.75 kilometers? hours and minutes
*January 7, 2015 by gabrielle*

**chemistry**

If the sun is 150,000,000 km away, how many minutes does it take light to travel from the sun to the earth? Assume light travels at a speed of 3.0x10^10 cm/sec
*September 12, 2012 by Patricia*

**Ed**

In a AAA map of Ohio, 1 inch equals approximately 10 miles or 18 kilometers. If the distance on the map between Paulding and Eaton is 9.8 inches, how many kilometers is it between the two towns.
*January 12, 2010 by Lisa*

**Math**

In a AAA map of Ohio, 1 inch equals approximately 10 miles or 18 kilometers. If the distance on the map between Paulding and Eaton is 9.8 inches, how many kilometers is it between the two towns?
*April 21, 2010 by Lisa*

**Math**

In a AAA map of Ohio, 1 inch equals approximately 10 miles or 18 kilometers. If the distance on the map between Pauling and Eaton is 9.8 inches, how many kilometers is it between the two towns?
*November 11, 2013 by Brittany*

**calculus**

The maker of an automobile advertises that it takes 10 seconds to accelerate from 30 kilometers per hour to 90 kilometers per hour. Assuming constant acceleration, compute the following. (a) The acceleration in meters per second per second (Round your answer to three decimal ...
*February 7, 2016 by harvey*

**phiycics**

vocity 48 kilometers/mph how long will it take 144 kilometers down the highway
*August 28, 2013 by Milo*

**Calculus**

A lighthouse is located on a small island 4 km away from the nearest point P on a straight shoreline. Its light makes 3 revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1.7 kilometers from P ?
*October 19, 2011 by Anonymous*

**algebra word problem**

The mass of Saturn is about 5.688 10^23 metric tons. The mass of the sun is about 1.998 x 10^27 metric tons. About how many times the mass of Saturn is the mass of the sun? Give answer in scientific notation. The mass of the sun is about ----- times the mass of Saturn. COULD ...
*December 4, 2008 by pj*

**physics**

a 50 kg person is standing on mercury. mercury's mass is .0553 times the earths mass and has a radius of 2439 kilometers a. what is the persons weight on saturn b. what is the persons mass on saturn how do i solve this, i dont need the answers, just an explanation
*November 14, 2008 by kim*

**Math**

a bus travels 240 kilometers at 60 kph and then returns at 40 kph.. what is the average speed in kilometers per hour for the round trip?
*August 13, 2013 by Mae*

**Science**

Approximately how long does an earhquake P-wave take to travel the first 6500 kilometers after the earthquake occurs? a. 6.5 min b. 8.0 min c. 10.0 min d. 18.5 min
*March 24, 2009 by Angie*

**help i have no idea!!!!!!**

3.Sam is a mailman who delivers mail in a mail truck. His route is 2 kilometers long. He usually starts his route at 8:00 am and finishes by 12:00pm If Sam decided to get a bigger route that is 12 kilometers long, what does his average speed need to be to start and finish at ...
*March 18, 2014 by eduarda*

**math**

Saturn is 6 times further from the Sun than Mars. Define a variable and write and expression for the distance of Saturn from the Sun.
*September 8, 2010 by Tammy*

**math**

Saturn is 6 times further from the Sun than Mars. Define a variable and write and expression for the distance of Saturn from the Sun. Not the same person
*September 8, 2010 by James*

**8th grade math**

Light travels approximately 5.87 X 10^12 miles in one year. This distance is called a light year. Suppose a star is 2 X 10^4 light years away. How many miles away is that star? Please help with detailed steps to solve problem. Thanks.
*September 29, 2009 by Kendall*

**8th grade math**

Light travels approximately 5.87 X 10^12 miles in one year. This distance is called a light year. Suppose a star is 2 X 10^4 light years away. How many miles away is that star? Please help with detailed steps to solve problem. Thanks.
*September 30, 2009 by kendall*

**Math**

Every moment of every day, light pours out from the Sun at the center of our solar system and travels to Earth. It does not arrive at Earth instantaneously though; it takes time to get here. Your task is to figure out how long it takes for light to travel from the Sun to Earth...
*February 18, 2014 by Danielle*

**physics**

he speed of light in a vacuum is about 3.00 108 m/s how many kilometers a pulse from a laser beam travels in exactly 3.9 hours.
*September 5, 2011 by Anonymous*

**physics**

An interstellar ship has a mass of 1.20 X10^6 kg and is initially at rest relative to a star system. a) what constant acceleration is needed to ring the ship up to a speed of .10c (where c is the speed of light, 3.0X10^8 m/s) relative to the star system in 3 days? b) what is ...
*November 26, 2006 by Dee*

**Math**

The earth is approximately a sphere. It's diameter is about 12730km. Water covers approximately 66% of the earths surface. How many square kilometers of land covers the earths?
*August 31, 2012 by Danielle*

**math**

if two dice are rolled 360 times, approximately how many times should you expect a sum of 7
*May 10, 2010 by tk*

**math**

the speed of light is 1.86 times 10 with the power of 5 miles per second. using a year of 365 days, how far does light travel in a year?
*December 20, 2011 by Anonymous*

**math**

the speed of light is1.86 times 10 with a power of 5 miles per second. using a year of 365 days, how far does light travel in a year?
*December 20, 2011 by cathey*

**scientific notation**

the speed of light is1.86 times 10^5 miles per second. using a year of 365 days, how far does light travel in a year?
*December 20, 2011 by cathey*

**Pre algebra**

A cyclist rides her bike at a speed of kilometers per hour. What is this speed in kilometers per minute? How many kilometers will the cyclist travel in minutes? Do not round your answers.
*April 26, 2014 by David*

**Physics**

How long does it take light traveling from the sun at 3.0 x 10^8 m/s to reach Jupiter, which is 780 x 10^6 km away?
*January 31, 2012 by Elizabeth*

**Math**

Simplify the expression. (-4)^-6(-4)^-7 My answer: -4 Simplify and give the answer in scientific notation. (5 X 10^6((3 X 10^5) My answer: 1.5 X 10^12 (3 X 10^6)(8 X 10^-4) My answer: 2.4 X 10^3 Astronomers measure large distances in light-years. One light-year is the distance...
*February 6, 2014 by Anonymous*