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September 2, 2014

Homework Help: Science: Earth

Recent Homework Questions About Earth

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english fixed -2
thanks for helping write teacher. i fix again my sentences and can you please look at it again. ty John Cervantes Beth Braun February 27, 2012 Blue Gold - World Water Wars 10 key things about the movie Blue Gold - World Water Wars 1. Water is the source of life. We all depend ...
Monday, February 27, 2012 at 6:51pm

science
The words in the bank are air resistance,time, zero, inertia, mass, direction, friction, rolling friction, and less. See if I did them right and if I didn't write anything on the blank, I need help with it. THANKS!!!!!!!!!!!!!!!! 10. Speed can be determined if you know ...
Monday, February 27, 2012 at 6:43pm

science
Numbers 1-9 are true and false questions.Check if my answers are right and if I didn't write anything on the blank, I need help with them. Thanks!!!! _____ 1. Velocity could be reported as 50 k/hr. True 2. How far an object travels in a certain period of time is its speed...
Monday, February 27, 2012 at 6:29pm

english
sorry for posting it again i just need some help with proof read original thread display.cgi?id=1330379031 1. Water is the source of life. We all depend on it. Water is important, and we cannot survive a week without it. 2. Water should be free; it is a basic need for living. ...
Monday, February 27, 2012 at 5:27pm

science
if Earth's axis were not tilted,could any area have both a hot summer and a cold winter?
Monday, February 27, 2012 at 4:55pm

english FIXED
original thread: cgi?id=1330376726 1. Water is the source of life. We all depend on it. Water is important, and we cannot survive a week without it. 2. Water should be free; it is a basic need for living. We should not consider buying bottled water. 3. Agricultures use ...
Monday, February 27, 2012 at 4:43pm

english
i need help in forming my ideas into good sentences. i taken all these ideas from a movie that we watch from the class 1. Water is the source of life, we all depend on it,Water is important, We cannot survive a week without water 2. Water should be free, it is a basic need for...
Monday, February 27, 2012 at 3:36pm

earth-physics
The Earth has an angular speed of 7.272 10-5 rad/s in its rotation. Find the new angular speed if an asteroid (m = 1.07 1022 kg) hits the Earth while traveling at a speed of 1.30 103 m/s (assume the asteroid is a point mass compared to the radius of the Earth) in each of the ...
Sunday, February 26, 2012 at 7:35pm

Science
Suppose the moon were closer to Earth. How would the force of gravity between Earth and the moon be different?
Sunday, February 26, 2012 at 12:46pm

Science
How would earth move if the sun including its gravity suddenly disappeared? Explain your answer.
Sunday, February 26, 2012 at 12:45pm

earth
how long does it take for light from Jupiter to come to earth. for example tonight the planet Jupiter can be seen by the moon, 2/25/12 and we see the light from the planet and how old is that light. thanks. jerry in colorado USA
Sunday, February 26, 2012 at 12:05am

Physics
Because of the Earth's rotation, a plumb bob does not hang exactly along a line directed to the center of the Earth. How much does the plumb bob deviate from a radial line at 35.1° north latitude? Assume the Earth is spherical.
Saturday, February 25, 2012 at 10:30pm

physics!!!
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest . The belt is a 215-turn coil. When the patient inhales, the area encircled by the coil increases by 41.0 cm2. The magnitude of Earth's magnetic field is 50.0 µT and ...
Saturday, February 25, 2012 at 11:33am

american history
I nee help revising my essay here it is This is what my general view on American History. Well let me tell you it’s a course that we all have to take in high school to graduate. In school we are confronted with American History, state History and general courses of the ...
Friday, February 24, 2012 at 7:37pm

English Lit-Writeteacher please check if possible
I really appreciate you helping me earlier today but I have another poem by Wordsworth-Tintern Abbey 1.According to these lines, compared to his youth, Wordsworth see himself now as: a.More responsible b.Less happy c.More aware of the world's problems d.More serious e.Less...
Thursday, February 23, 2012 at 5:25pm

ENGLISH ESSAY
Could you plz help me to check if these two essays have thesis and thesis development? ESSAY 1:There has been much discussion over the maximum population capacity of our world today. This paper analyzes how agroecology has been a major benefit to society on a global scale. ...
Wednesday, February 22, 2012 at 9:46pm

physics
A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.95 m/s. (See Problem 4.9, page 111 for an investigation of how the fish can leave the water at a higher speed that it can swim underwater.) If the salmon is in a stream with water speed equal ...
Wednesday, February 22, 2012 at 8:39pm

physics
A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.95 m/s. (See Problem 4.9, page 111 for an investigation of how the fish can leave the water at a higher speed that it can swim underwater.) If the salmon is in a stream with water speed equal ...
Wednesday, February 22, 2012 at 8:38pm

Physics
A satellite moves on a circular earth orbit that has a radius of 6.4 106 m. A model airplane is flying on a 23-m guideline in a horizontal circle. The guideline is parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same ...
Wednesday, February 22, 2012 at 5:02pm

math
One estimate for the distance from earth to the andromeda galaxy is 2,400,000 light years. What is this distance expressed in scientigic notation?
Wednesday, February 22, 2012 at 12:51pm

physics
Joe has a weight of 850 N (about 193 lb) when he is standing on the surface of the Earth. What would his weight (the gravitational force due to the Earth) be if he tripled his distance from the center of the Earth by flying in a spacecraft?
Wednesday, February 22, 2012 at 1:45am

earth/atmosphere
my homework says a,b,and c represent gases what is a? a has 78.09 present by volume and i need to know what gas a stands for....i thought it was argon but argon is already a gas listed...HELP
Tuesday, February 21, 2012 at 7:26pm

physic
calculate the attractive force between earth and sun. Neglect the radii, D= 1.50X10
Monday, February 20, 2012 at 11:42pm

Math
A satellite in a circular orbit 879.4 mi above the earth makes one complete orbit every 83.42min. What is its linear velocity? Use 3963 mi for the length of the radius of the earth.
Monday, February 20, 2012 at 8:40pm

earth
A satellite 200 miles above the earth is orbiting the earth once every 6 hours. How long, in hours, does it take the satellite to travel 8,400 miles? (Assume the radius of the earth is 4,000 miles.) Give your answer both as an exact value and an approximation to three ...
Monday, February 20, 2012 at 4:49pm

algebra
Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of...
Monday, February 20, 2012 at 4:33pm

PHYSICS HEELLPPP!!
Many people mistakenly believe that the astronauts who orbit the Earth are "above gravity." Calculate g for space shuttle territory, 225 kilometers above the Earth's surface (dashed line in sketch). Earth's mass is 6 1024 kg, and its radius is 6.38 106 m (...
Monday, February 20, 2012 at 3:26pm

english
i need help in forming these into good sentences ty 1. Microorganisms call soil their home as well, a single ounce of soil can contain over 100 million microorganisms. 2 mycelium makes dirt and The mycelium is usually hidden in the soil, in wood, or another food source 3.Soil ...
Monday, February 20, 2012 at 3:12pm

phys3
A biologist is studying growth in space. He wants to simulate Earth's gravitational field, so he positions the plants on a rotating platform in the spaceship. The distance of each plant from the central axis of rotation is r = 0.11 m. What angular speed is required?
Monday, February 20, 2012 at 2:55pm

physics
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same ...
Monday, February 20, 2012 at 11:50am

Math/117 University of Phoenix
Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of...
Monday, February 20, 2012 at 11:17am

Math
A car travels due east with a speed of 42.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain with respect to ...
Sunday, February 19, 2012 at 11:46pm

math/117
Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of...
Sunday, February 19, 2012 at 6:46pm

physics
How far from the center of the earth must a person be to experience acceleration due to gravity that is one half the acceleration at the surface?
Sunday, February 19, 2012 at 2:49pm

math
the international space station orbits 350 km above earth's surface. earth's radius is about 6370 km.use the pythagorean theorem to find the distance from the space station to earth's horizon.
Saturday, February 18, 2012 at 10:05pm

physics--please help
Only need help with part c--answer for part a is 2.94 radians and for b it is 777 days Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be ...
Saturday, February 18, 2012 at 6:47pm

earth
do any questions here actually get answered??????
Saturday, February 18, 2012 at 2:24pm

Physics
If you throw a 36 kilogram rock off a cliff , how fast does it accelerate to the ground? The earth excerts a force of 200 Newtons on the rock.
Saturday, February 18, 2012 at 1:14pm

physics
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same ...
Saturday, February 18, 2012 at 9:29am

physics
Suppose a simple pendulum is used to measure the acceleration due to gravity at various points on the Earth. If g varies by 0.151 % over the various locations where it is sampled, what is the corresponding variation in the period of the pendulum? Assume that the length of the ...
Friday, February 17, 2012 at 7:04pm

physics
Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are ...
Friday, February 17, 2012 at 3:02pm

physics
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same ...
Friday, February 17, 2012 at 12:41pm

physics (Right Hand Rule Question)
A proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the surface of the earth. What is the direction of the magnetic field? a)North b)East c)South d)West e)Down I know I need to use the right hand rule to ...
Friday, February 17, 2012 at 12:39am

physics
A satellite orbits a planet at a distance of 3.80 108 m. Assume that this distance is between the centers of the planet and the satellite and that the mass of the planet is 3.90 1024 kg. Find the period for the moon's motion around the earth. Express the answers in days.
Thursday, February 16, 2012 at 10:03pm

Physics
The density of air near the earth's surface is 1.29 kg?m^3. If a helium balloon with a mass of 1 kg floats in air without rising or falling,what is the minimum volume of helium in the balloon? (presume that the mass of the material making up the balloon is negligible). I ...
Thursday, February 16, 2012 at 9:37pm

Physics to drwl please help
Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are ...
Thursday, February 16, 2012 at 9:21pm

physics
I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such ...
Thursday, February 16, 2012 at 7:33pm

physics
I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such ...
Thursday, February 16, 2012 at 5:14pm

Physics
About 5.12 x 104 m above Earth's surface, the atmosphere is sufficiently ionized that it behaves as a conductor. The Earth and the ionosphere form a giant spherical capacitor, with the lower atmosphere acting as a leaky dielectric. Find the capacitance C of the Earth-...
Thursday, February 16, 2012 at 2:37pm

physics
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same longitude. Do ...
Wednesday, February 15, 2012 at 9:18pm

physics
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same longitude. Do ...
Wednesday, February 15, 2012 at 5:42pm

physics
An apple weighs 2 KG. The earth exerts a force of 20 Newtons on the apple. How fast does the apple fall ? ( 1 Newton = kg/m/s2)
Wednesday, February 15, 2012 at 3:39pm

physics
a satelitte is in orbit about the earth. its orbital radius 7.47x10^7. mass of satelitte 6862kg & mass of earth 5.97x10^24kg determine the orbital speed in mi/s 1mi/s=1609m/s
Wednesday, February 15, 2012 at 10:24am

Math
An airplane leaves the airport and flies due west 170 miles and then 240 miles in the direction 200°30'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?
Tuesday, February 14, 2012 at 4:00pm

Earth Science
What is the landform of the Grand Teton?
Tuesday, February 14, 2012 at 9:35am

SCIENCE
Determine the mass of a person on the moon whose mass on Earth is 70 kg Determine the weight of a person on the moon whose weight on Earth is 148 lbs. How is the mutual gravitational force affected by changing the separation distance between two 1.0 kg masses if the distance ...
Sunday, February 12, 2012 at 11:18pm

Physics
An image of the moon is focused onto a screen using a converging lens of focal length f= 35.3 cm. The diameter of the moon is 3.48×106 m, and its mean distance from the earth is 3.85×108 m. What is the diameter of the moon's image?
Sunday, February 12, 2012 at 4:19pm

physics
A satellite is in a circular earth orbit that has a radius of 6.63E+6 m. A model airplane is flying on a 16.4 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same ...
Sunday, February 12, 2012 at 3:56pm

science
Given that Antarctica is roughly semicircular with a radius of 2000 km and has an average ice thickness of 3000 m. a) How many km3 of ice does Antarctica contain? b) Assuming all the ice melts, how much will this raise sea level (ignoring that the Earth has curvature and ...
Sunday, February 12, 2012 at 3:35pm

physical
Consider a pulse of laser light aimed at the moon that bounces back to earth. The distance between Earth and Moon is 3.8 x 10 (small eight above) m. Show that the round-trip time for the light is 2.5 s.
Sunday, February 12, 2012 at 11:41am

physics
for a sateliite to have a speed of 7400 m/s how far must it be in metres above the earth's surface
Saturday, February 11, 2012 at 7:01pm

physics
The Earth orbits the Sun once per year.What is the centripetal force keeping the Earth in orbit? T = 1 year (convert to seconds) r = 1.5e+11 meters m = 6e+24 kg
Saturday, February 11, 2012 at 5:55pm

physics
Suppose all the people of the Earth go to the North Pole and, on a signal, all jump straight up. Estimate the recoil speed of the Earth. The mass of the Earth is 6 1024 kg, and there are about 6 billion people (6 109). Take the average mass of a person to be 74 kg and the ...
Friday, February 10, 2012 at 8:40pm

English
Writeacher, I wanted to thank you for all what you have done for me and for my professional growth. We have worked really hard on the project over the last few days (though I was in bed with flu!) By the way, I used your suggestion as a title for the whole project. If the ...
Friday, February 10, 2012 at 4:26am

earth
An object on earth weighs 6 times what it would weigh on the moon. An object weighs 72 pounds on earth. Write multiplication equation to find the weight of object on moon.
Friday, February 10, 2012 at 2:31am

Physics
What is the frequency of the electromagnetic radiation from outer space that reaches the earth with a wavelength of 1 x 105 m, and a velocity of 1 x 105 m/s?
Thursday, February 9, 2012 at 8:23pm

English 7 HW Assignment (PLZ read!)
English HW: List the title of one song that includes on example of determination. Include the artists name, and write down the section of lyrics that provide an example of determination. My English teacher said that it could be a love song or a i don't umm... a sad song. ...
Thursday, February 9, 2012 at 6:17pm

English
One last thing. I varied this sentence since we are going to involve students from different third classes.I don't know how to express the second part. Pupils taken from different (or various) tenth classes will be involved in the project since the scientific project's...
Thursday, February 9, 2012 at 1:42pm

earth space science
Potassium-40 has a half-life of approximately 1.25 billion years. Approximately how many years will pass before a sample of potassium-40 contains one-sixteenth the original amount of parent isotope?
Thursday, February 9, 2012 at 9:53am

English
Writeacher, thank you very much! Here are some sentences I varied and I urgently need you to check. I need to clarify those things. Could you please help me express sentence 1? We need to impress the EU to support the project!!! Rationale 1)The preparatory meeting made clear ...
Thursday, February 9, 2012 at 4:09am

trig
if diameter of the circle is 100 cm. and length of the arc forming the angle is 360 cm. Assume that the earth is a perfect sphere of diameter 8000 miles. Find the distance between: Rome, Italy: latitude 42 degrees north Copenhagen, Denmark: latitude 54.3 degrees north
Wednesday, February 8, 2012 at 9:11pm

physics
how do scientist know that the chemical elements here on earth are the same as on the planets in space and not some different elements
Wednesday, February 8, 2012 at 7:56pm

physics
A student argues that as a satellite orbits the earth in a circular path, it moves with a constant velocity and therefore has no acceleration. The professor claims that the student is wrong since the satellite must have a centripetal acceleration as it moves in its circular ...
Wednesday, February 8, 2012 at 7:51pm

Physics
How far above the surface of the Earth does an object have to be in order for it to have a weight which is 0.53 times the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for the object on the Moon's surface or from ...
Wednesday, February 8, 2012 at 7:41pm

Science/Math/HElP
Science- A 25N object is 3 meters up. How much potential energy does it have? our teacher said that the formula for finding out potential energy is PE = Mass * Gravity * Height. The gravity on Earth is always 9.8, but my problem is that instead of mass the object is measured ...
Wednesday, February 8, 2012 at 7:01pm

Physics
An airplane with a speed of 76.8 m/s is climbing upward at an angle of 48° with respect to the horizontal. When the plane's altitude is 560 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point of...
Wednesday, February 8, 2012 at 6:27pm

Physics
A student argues that as a satellite orbits the earth in a circular path, it moves with a constant velocity and therefore has no acceleration. The professor claims that the student is wrong since the satellite must have a centripetal acceleration as it moves in its circular ...
Wednesday, February 8, 2012 at 5:12pm

College Algebre
Here is the math problem: The height of an object in free fall, or otherwise thrown into the air near the earth's surface, with initial vertical velocity v0 in feet per seconds, and from the initial height h0 in feet, at any given time t in seconds is given by the equation...
Wednesday, February 8, 2012 at 11:58am

Math
The weight of an object on the planet Mercury is about 2/5 the weight of that object on the Earth. An object that weighs 30 pounds on Earth would weigh how many pounds on Mercury? Need solution because I think it is 7.5 but my parents think the answer is 12. Thank you.
Tuesday, February 7, 2012 at 8:16pm

Math
The weight of an object on the planet Mercury is about 2/5 the weight of that object on the Earth. An object that weighs 30 pounds on Earth would weigh how many pounds on Mercury?
Tuesday, February 7, 2012 at 8:05pm

Physics
Given: G = 6.67259 × 10−11 Nm2/kg2 . A 602 kg geosynchronous satellite or- bits a planet similar to Earth at a radius 1.98 × 105 km from the planet’s center. Its angular speed at this radius is the same as the rotational speed of the Earth, and so they ...
Tuesday, February 7, 2012 at 12:31pm

earth
At what height above the earth surface will an austranouts experience only half the gravitation that he experience on earth
Tuesday, February 7, 2012 at 12:34am

physics
How does your mass on Earth compare to your mass on Mars?
Monday, February 6, 2012 at 10:25pm

science
A space probe of the surface of Mars sends a radio signal back to the Earth, a distance of 3 x 1010 km. Radio waves travel at the speed of light (3.00 x 108 m/s). How far away is the space probe? How many seconds does it take for the signal to reach the Earth? How many hours ...
Saturday, February 4, 2012 at 11:40pm

physics
A 610 kg satellite orbits at a distance from the Earth's center of about 5.3 Earth radii. What gravitational force does the Earth exert on the satellite?
Saturday, February 4, 2012 at 10:21pm

physics
A satellite orbits at a distance from the Earth's center of about 4.40 Earth radii and takes 13.0 hours to go around once. What distance (in meters) does the satellite travel in one day?
Saturday, February 4, 2012 at 9:40pm

College Physics
On planet Z, the standard unit of length is the foose. Ann the Astronaut is 5.90 feet tall on earth. She lands on planet Z and is measured to be 94 foosi tall. Her partner Rachael is 88 foosi tall. How tall is Rachael on Earth?
Saturday, February 4, 2012 at 6:59pm

physics
An engine draws water from a depth of 10 m from earth at aspeed of 2m/s at arate of 10 kg/10 s. What is the power of the engine?
Friday, February 3, 2012 at 11:24am

physics
Can water,air and earth conduct electricity? If yes, then explain how they conduct electricity.
Friday, February 3, 2012 at 2:48am

Astronomy
Assume that right now the Moon is full, Mercury is at superior conjunction, Venus is at greatest western elongation, and Mars is at opposition. Draw a simple sketch of the solar system, showing the relative positions of the Sun, Earth, the Moon, Mercury, Venus and Mars. Draw ...
Thursday, February 2, 2012 at 11:55pm

Earth Science
Can you help me find how many hours are received by these degrees of latitude during the winter (see details)? North Pole = 0 hrs of daylight Equator = 12 hrs of daylight South Pole = 24 hrs of daylight 66.5 degrees north = ? 23.5 degrees north = ? 23.5 degrees south = ? 66.5 ...
Thursday, February 2, 2012 at 10:43pm

science
The pull of gravity keeps the Moon in orbit around Earth. The distance between the Earth and Moon is about 380,000 kilometers. A crew of astronauts leaves Earth on a Monday and lands on the Moon on a Thursday. They land on the side of the Moon facing away from the Earth. On ...
Thursday, February 2, 2012 at 6:05pm

Physics
A plane is headed east with an air speed of 294.0 m/s. The wind blows southeast at 42.0 m/s. Find the velocity of the plane relative to the earth.
Thursday, February 2, 2012 at 5:02am

Physical Science
The string of a certain yo-yo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yo-yo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yo-yo.
Wednesday, February 1, 2012 at 1:22pm

Physical Science
A man has a mass of 70 kg. A) What would his weight be on Jupiter which as an acceleration of gravity of 25m/s^2? B) What would the mass of a person have to be in order for him to weigh that amount on earth?
Wednesday, February 1, 2012 at 1:20pm

physics
calculate the force of gravity between earth (mass = 6.0 x 1024kg) and the moon (mass = 7.4 x 1022 kg). the average Earth-moon distance is 3.8 x 108 m.
Wednesday, February 1, 2012 at 1:37am

Physical Science
The string of a certain yo-yo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yo-yo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yo-yo.
Tuesday, January 31, 2012 at 5:07pm

Physical Science
A man has a mass of 70 kg. A) What would his weight be on Jupiter which as an acceleration of gravity of 25m/s^2? B) What would the mass of a person have to be in order for him to weigh that amount on earth?
Tuesday, January 31, 2012 at 4:44pm

science
if a globe has a diameter of 0.5 meters write the globes scale as a ratio. What distance on earth would 1 centimeter on a globe represent
Tuesday, January 31, 2012 at 4:31pm

physics
A space traveler weighs 620 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
Monday, January 30, 2012 at 8:24pm

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