Tuesday
September 27, 2016

Search: An satellite moves in a circular orbit 775 km above the Earth's surface. The period of the motion is 100.1 min.

Number of results: 58,385

Physics
When you drop a 0.27-kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s2 toward Earth's surface. According to Newton's third law, the apple must exert an equal and opposite reaction force on Earth. If the mass of Earth is 5.98 1024 kg, what would be the ...
December 2, 2015 by Anonymous

Physics
A small compass is held horizontally, the center of its needle a distance of 0.460 m directly north of a long wire that is perpendicular to the earth's surface. When there is no current in the wire, the compass needle points due north, which is the direction of the horizontal...
February 25, 2013 by Anonymous

Physics
What equations should I use to calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5800 km above the earth's surface?
October 23, 2010 by Adolfo

chemistry
determine the concentration of NH3(aq) that is required to dissolve 775 mg of AgCl(s) in 100.0 mL of solution. The Ksp of AgCl is 1.77× 10–10.] please help!!!!!!!
April 3, 2015 by maggie

College Physics
A 1.70 kg object attached to a spring moves without friction and is driven by an external force given by F = (3.00 N) sin(2πt). (a) If the force constant of the spring is 20.0 N/m, determine the period. _____s For this one I tried 2*pi*sqrt(1.7/20) but it said my answer ...
April 9, 2012 by Anand

Physics
When an automobile moves over a wide, closed loop of wire embedded in a road surface, is the magnetic field of the Earth within the loop altered? Is a pulse of current produced? Can you cite a practical application for this at a traffic intersection?
February 13, 2008 by Peyton

Physics
When an automobile moves over a wide, closed loop of wire embedded in a road surface, the magnetic field of the Earth within the loop altered? Is a pulse of current produced? Can you cite a practical application for this at a traffic intersection?
April 30, 2010 by elizabeth

mechanics and heat
At the same instant that a 0.5 kg ball is dropped from 25 m above earth , a second ball , with a mass of 0.25 kg , is thrown straight upward from earth’s surface with an initial speed of 15 m/s . They move along nearby lines and pass without colliding. What is the velocity of ...
January 7, 2015 by awash

Physics
A satellite is orbiting the earth at a distance of 1.00 x 10^3 km. What is its speed?
November 28, 2012 by Andrew

math
Hi, Nearly all of the energy used on earth comes originally from the sun, and that solar radiation is intercepted at 1370 Wm^-^2 at the top of the atomsphere, and that 49%of this radiation is absorbed by the earths surface. If a shallow dish containing ice or warte, placed on ...
December 5, 2008 by carl

Astronomy
Saturn’s Moon Janus is observed to orbit the planet with period 0.695 days, grazing the planet with an orbital radius only 2.64 times the radius of the planet itself. Use this information to find the mass of Saturn. Express your answer as a multiple of the mass of Earth M&#...
December 23, 2012 by sam

math
a mechanical toy on a circular track goes foward 3in. then back 2in. how many moves does the toy take to complete one 15in. revolution? i got 15 moves but i just want to make sure i did it right.
January 9, 2011 by kaykay

Physics
1 m pendlum on Earth has a period of 2 s. What would it's period be on the moon where the acceleration due to gravity is 1.63 m/s2 ?
April 8, 2016 by Aminah

physics
If you weigh 650 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×10^30 kg, the gravitational constant to be G = 6.67×10^−11 Nxm^2/kg^2 , and ...
March 29, 2012 by Kristina

mojo
A hydrogen atom is in its elevnth excited state, n = 12. Using the Bohr model of hydrogen, find the linear momentum. You want to solve for the electron velocity and multiply that by the electrn mass. There are many ways to do this. One would be to get the radius of the orbit ...
August 20, 2007 by physics

Physics (pressure)
What is the total mass of the earth's atmosphere? The radius of the Earth is 6.37E6 m, and atmospheric pressure at the surface is 1.013E5 N/m^2 (or Pa). I tried this: 1.013E5 Pa = Mg/ pi(6.37E6)^2 1.013E5 Pa (denominator)= 9.8 M solve for M: I'm coming with different ans from ...
May 3, 2007 by Valerie

science
imagine you are in a spaceship flying from the earth - describe what you see from the space and how you feel as it moves out of the gravitation pull of earth?
August 25, 2010 by sarthak

science
imagine you are in a spaceship flying from the earth - describe what you see from the space and how you feel as it moves out of the gravitation pull of earth?
August 25, 2010 by sarthak

physics
A proton moves in a circular path perpendicular to a constant magnetuc field. If the field strengrh of the magnet is increased, does the diameter of the circular path incresse, decrease, or remain the same?
April 23, 2014 by cindy

physics
A piston in a car engine has a mass of 0.75 kg and moves with motion wich was approximately simple harmonic. If the amplitude of zis oscillation is 10 cm and z max. safe operating speed of z engine is 6000 rev. per min. Calculate: a. Max acceleration of z piston b. Max.speed ...
January 16, 2012 by Nuwaya

Physics
The period of motion of an object-spring system is T = 0.474 s when an object of mass m = 296 g is attached to the spring. (a) Find the frequency of motion in hertz. _______Hz (b) Find the force constant of the spring. _______N/m (c) If the total energy of the oscillating ...
December 6, 2012 by Ame

physics
A planet orbits a star once every 3.14x10^7 s in a nearly circular orbit of radius 1.51x10^11 m. (a) With respect to the star, determine the angular speed of the planet b) With respect to the star, determine the tangential speed of the planet. c) With respect to the star, ...
May 25, 2012 by Jennifer

Physics
Please help me with the following problem: Joe is on a cross-country trip from New York to Los Angeles. He drives for 45.0 min at 70.0 km/h, 10.0 min at 95 km/h, and 30.0 min at 55.0 km/h, and he spends 20.0 min eating lunch and buying gas. What is the average speed for this ...
March 4, 2014 by Brady

MATH
Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question. Let t represent time in years. Write the function D ...
November 17, 2011 by Rebecca

college, Astronomy
Compared with the strength of Earth's gravity at its surface, how much weaker is gravity at a distance of 13 Earth radii from Earth's center?
March 31, 2010 by Anonymous

PHYSICS
Search: a 1.0 kg mass weighs 9.8 n on earths surface and the radius of the earth is roughly 6.4x10 to the 6 m. what is the mass of the earth and the average density of Earth
December 8, 2010 by Tracey

Physics
The gravitational acceleration on the surface of Mercury is 0.38 times that of Earth. Its radius is also about 0.38 times that of the Earth. What is the ratio of the density of Mars to that of Earth?
December 5, 2013 by Shelby

Physics
A block is executing simple harmonic motion on a frictionless surface with an amplitude of .100m. At a point 0.060m away from equilibrium point the speed of the block is 0.320m/s. What is the period? What is the displacement when the speed is 0.20m/s?
June 29, 2011 by Jocelyn

ALGEBRA
A satalites escape velocity is 6.5 mi/sec, the radius of the earth is 3960 miles and the earth's gravitational constant(g) is 32.2 ft/sec^2 How far is the satelite from the surface of the earth?
July 1, 2013 by ASHLEY

Physics
An airplane whose air speed is 600 mi/h is flying perpendicularly to jet stream whose speed relative to the Earth's surface is 100 mi/h. What is the airplane's speed relative to the Earth?
May 20, 2014 by student 2017

Astronomy
Compared with the strength of Earth's gravity at its surface, how much weaker is gravity at a distance of 13 Earth radii from Earth's center?
March 31, 2010 by Anonymous

Physics
Using the fact that a 1.0 kg mass weighs 9.8N on the surface of the earth and the radius of the earth is roughly 6.4x10^8m. calculate the mass of the earth.
May 3, 2010 by Hannah

Chemistry
Say you are observing a motional behavior of 40 Helium molecules. Keeping the basic concepts of the kinetic-molecular theory of gases in mind: You follow one of the molecules with your eye. Over a lengthy period of time, does the molecule exhibit systematic motion, or is it ...
November 5, 2012 by Anonymous

phys223
What is the amplitude of the motion? Remember, at t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at position xo = -.33 m from the equilibrium position of the spring. The block is attached to a massless spring of spring constant k = 61.2 N/m and slides on a ...
September 30, 2013 by eddy

physics
The earth's atmosphere extends to a height of nearby 200KM above its surface there many be explosion and noises taking place in the outer space but we do not hear them.why?
January 3, 2012 by Vivek

Basic electricity
A body having a mass of 4.5kg is supported 30kg above earth surface calculate the portential energy take 10kg?
February 16, 2016 by Gideon

physics
A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center, as shown in the figure below. The linear speed of a passenger on the rim is constant and equal to 6.00 m/s. A.What is the magnitude of the passenger's acceleration as she passes through ...
February 2, 2011 by mely

physics
A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center, as shown in the figure below. The linear speed of a passenger on the rim is constant and equal to 6.00 m/s. A.What is the magnitude of the passenger's acceleration as she passes through ...
February 2, 2011 by andrea

physics
While waiting to board a helicopter, you notice that the rotor's motion changed from 340 rev/min to 265 rev/min in one minute. Assuming that this acceleration remains constant, calculate how much longer (in seconds) it will take for the rotor to stop.
May 6, 2013 by Anon

physics
The value of g at Earth’s surface is about 9.8 m/s^2. If Earth were of uniform density (same mass/volume throughout), what would the value of g be inside Earth at half its radius?
March 6, 2012 by jim

Food engineering/biology
Hey Can anyone help me out with this problem. For part a i understand i plot microbial numbers against time on semi log paper to determine D value for the two temperatures. But i'm unsure how to do part b. Alicyclobacillus acidoterrestris is a quite hat resistant microorganism...
May 23, 2010 by Jennifer

Physical Science
The Earth moves in a nearly perfect circle around the Sun. Assume the speed stays constant. Is the Earth accelerating or not?
October 12, 2013 by unknown

Astronomy
Darwin proposed that the Moon formed far closer to Earth than it is now. Let’s see just how close it could possibly be to Earth and survive. In particular, in the next 4 problems you will find the distance from Earth at which the tidal force due to Earth is sufficient to lift ...
December 23, 2012 by sam

physics
The mass of the Mars is about 0.11 the mass of the earth, its radius is 0.53 that of the earth, and the acceleration due to gravity at the earth's surface is 9.80 {\rm m}/{\rm s}^{2}.
December 9, 2011 by Anonymous

Physics
The second hand and the minute hand on one type of clock are the same length L. -------------------------------------------------------------------------------- (a) What is the period Tsecond of the motion of the second hand? (_) The period is 10 seconds. (o) The period is 60 ...
April 5, 2008 by Karen

geometry
whats the Biconditional of "the moon is the largest satellite of Earth"
September 18, 2011 by Anonymous

geometry
write a biconditional for: the moon is the largest satellite of Earth.
September 21, 2011 by David

physics
Assuming that 68.1% of the Earth's surface is covered with water at average depth of 1.21 mi. ,estimate the mass of the water on Earth. One mile is 1.609 km and the radius of the earth is 6.37 x 10^6 m. Answer in units of kg
June 11, 2011 by ashley

earth
Body on surface of earth weighs 400 lb. Radius of earth is about 4000miles. If same body were placed on 4000 mile high tower, what would its weight be
January 20, 2012 by jerry

Physics
why does an astronaut weigh less on the moon than on Earth? is it because the gravitational field strength is less on the moon's surface than on Earth's surface
February 20, 2009 by Bella

Physics
Calculate the kinetic energy that the earth has because of its rotation about its own axis. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used in the United States in one year is about 9.33 109 J. ...
March 28, 2007 by Jim

Physics
A 279 N force is pulling an 75.9-kg refrigerator across a horizontal surface. The force acts at an angle of 26.3 ° above the surface. The coefficient of kinetic friction is 0.259, and the refrigerator moves a distance of 9.14 m. Find (a) the work done by the pulling force, and...
February 27, 2012 by Candy

physics
a train moving at constant velocity of 54 k mph moves east wards for 30 min, then due to north with the same speed for 40 min. What is the average velocity of the train during the run?(in k mph)
May 25, 2012 by srikala

physics
a train moving at constant velocity of 54 k mph moves east wards for 30 min, then due to north with the same speed for 40 min. What is the average velocity of the train during the run?(in k mph)
May 25, 2012 by srikala

physical
From t = 0 to t = 3.30 min, a man stands still, and from t = 3.30 min to t = 6.60 min, he walks briskly in a straight line at a constant speed of 1.76 m/s. What are (a) his average velocity vavg and (b) his average acceleration aavg in the time interval 1.00 min to 4.30 min? ...
September 20, 2012 by Aa

physical
From t = 0 to t = 3.30 min, a man stands still, and from t = 3.30 min to t = 6.60 min, he walks briskly in a straight line at a constant speed of 1.76 m/s. What are (a) his average velocity vavg and (b) his average acceleration aavg in the time interval 1.00 min to 4.30 min? ...
September 20, 2012 by Aa

physics
Sally travels by car from one city to another. She drives for 24.0 min at 63.0 km/h, 36.0 min at 45.0 km/h, and 44.0 min at 49.0 km/h, and she spends 13.0 min eating lunch and buying gas.
September 19, 2009 by berha

physics
Sally travels by car from one city to another. She drives for 29.0 min at 63.0 km/h, 37.0 min at 32.0 km/h, and 14.0 min at 26.0 km/h, and she spends 14.0 min eating lunch and buying gas.
September 13, 2016 by will

Math
A cylinder cop has a circular base of radius 7cm & height of 10cm taking 22/7(a)calculate it curved surface(b)d area of it circular base
May 6, 2015 by patience daniel

Physics
7. An early objection to the idea that the earth is spinning on its axis was that the earth would turn so fast at the equator that people would be thrown into space. Show the error in this logic by calculating the centripetal force needed to hold a 100. kg person in place at ...
February 2, 2015 by Brian

earth
A 5.0-kilogram sphere, starting from rest, falls freely 22 meters in 3.0 seconds near the surface of a planet. Compared to the acceleration due to gravity near Earth’s surface, the acceleration due to gravity near the surface of the planet is approximately
December 29, 2011 by Anonymous

physics
A liquid is used to make a mercury-type barometer. The barometer is intended for spacefaring astronauts. At the surface of the earth, the column of liquid rises to a height of 2185 mm, but on the surface of Planet X, where the acceleration due to gravity is one-fourth of its ...
November 13, 2007 by Jen

physics
A sled loaded with bricks has a total mass of 23.0 kg and is pulled at constant speed by a rope inclined at 40.0o above the horizontal. The sledge moves a distance of 12.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.350...
October 10, 2012 by lib

Earth's Heat Resources
list 3 examples of natural activities or events that carry thermal energy from within Earth directly to Earth's surface. I dont get what kinds of activities its referring to.
December 7, 2010 by Sydney

Earth's Heat Resources
list 3 examples of natural activities or events that carry thermal energy from within Earth directly to Earth's surface. I dont get what kinds of activities its referring to.
December 8, 2010 by Sydney

physics
i cant solve this problem i need for help please through how many does a point on the earth's surface move in 6h as a result of the earth's rotation ? what is the speed of a point on the equator ? take the radian of the earth to be 6370 km thank you
November 28, 2012 by need for help

physics
i cant solve this problem i need for help please through how many does a point on the earth's surface move in 6h as a result of the earth's rotation ? what is the speed of a point on the equator ? take the radian of the earth to be 6370 km thank you
November 28, 2012 by need for help

Physics
A car moves in a circular path at 15 mph. Which of the following statements about the cars motion would be correct? a. The cars acceleration is constant. b. The cars velocity is constant. c. The cars speed is constant. d. The cars velocity and speed are constant.
September 24, 2011 by Lisa

COLLEGE PHYSICS
A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 99 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile.
September 10, 2010 by CARY

Physics
If you weigh 670 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×1030 kg , the gravitational constant to be G = 6.67×10−11 N⋅m2/kg2 , ...
July 22, 2016 by Ane

physics
A de-orbit burn, similar to that presented in the previous math problem, has been performed. During this de-orbit burn a pre-calculated ∆V (delta V, change in velocity) of 290 ft/s (or 88.4 m/s) will be used to decrease the Shuttle’s altitude from 205 miles to 60 miles ...
January 20, 2012 by Levi B.

physics
The value of g at the Earth's surface is about 9.8 m/s2. What is the value of g at a distance from the Earth's center that is 9.5 times the Earth's radius?
July 10, 2010 by anonymous

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

science. -_-
Okk so im not asking for answers, i just need somone to expplain this homework to me! I dont get it what so ever. So the homework tittle is Weight in space. So it has a whole discripition in wjich i will write dpwn for you. The paper says: Gravity is an invisible force that ...
September 23, 2013 by Leslie:)

Physics
A spherical satellite has 12 identical monopropellant thrust chambers for attitude control with the following performance characteristics: thrust (each unit): 5 lbf; Is (steady state or more than 2 sec): 240 sec; Is (pulsing duration 20 msec): 150 sec; Is (pulsing duration 100...
February 19, 2016 by Matthew

Physics
A rocket cruising past Earth at 0.79c shoots two bullets at 0.92c relative to the rocket with one of the bullets fired along the direction of the rocket's motion and the other fired opposite the rocket's motion. (a) What velocity does an Earth-based experimenter measure for ...
April 29, 2011 by Darren

College Physics
A liquid is used to make a mercury-type barometer. The barometer is intended for spacefaring astronauts. At the surface of the earth, the column of liquid rises to a height of 2185 mm, but on the surface of Planet X, where the acceleration due to gravity is one-fourth of its ...
November 13, 2007 by Jen

physics
how much work is required to lift a 10 newton weight from 4.0 meters to 40.0 meters above the surface of earth
February 15, 2011 by abu

Physics
A 200-g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. If the total energy of the system is 2.00 J, find (a) The force constant of the spring and (b) The amplitude of the motion.
February 17, 2011 by Ray

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?
February 22, 2012 by Mina

Physics Circular Motion
A 0.40-kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 2.0 m on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 75 N, what is the maximum speed the ball can have? May someone please walk me through ...
June 16, 2012 by Mike Joseph

physics
when an object is rotating in a circle and the only force is acting on it is friction how is force of friction vector pointing towards the circle because an object in circular motion is traveling in that direction, it's accelerating towards the center of the circle, but ...
October 12, 2009 by Physics

Physics
The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97×1024 kg. The Earth's average radius is 6.38×106 m. What is the magnitude of the gravitational force that the Earth exerts on the Hubble?
April 6, 2011 by Denise

Physics
The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97×1024 kg. The Earth's average radius is 6.38×106 m. What is the magnitude of the gravitational force that the Earth exerts on the Hubble?
April 6, 2011 by Denise

chemistry
If a satellite orbits the earth at a velocity of 3.2 x 10⁶ km/hr, this would be the same as how many ft/s?
January 31, 2009 by ashley

physics
Determine the velocity of a satellite orbiting Earth at a height of 3.2 x 10^3 meters.
March 1, 2012 by becky

Science
What is the centripetal acceleration a satellite is orbiting the Earth at an altitude of 300.22 km?
February 1, 2016 by Jack

Science
Can someone please please help me? I don't have a text book, i have a online book and it isn't working. Can someone please be nice and help me? Science isn't my subject! 1. Why is Earth’s temperature just right for life? (1 point) Earth’s core is hot enough to heat Earth’s ...
January 21, 2014 by Mandy

Math-Help-please?
Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question. Let t represent time in years. Write the function D ...
November 17, 2011 by Rebecca

physics problem!!
If the water molecules in 5.70 g of water (H2O) were distributed uniformly over the surface of the Earth, how many such molecules would there be on 1.40 cm2 of the Earth's surface? -Molar mass Hydrogen gas(H2)=2.02 g/mol -Molar mass Oxygen gas (O2) = 32.0 g/mol -Radius of ...
April 9, 2013 by boom

Science
1. Temperature cools about 6.5 degrees Celsius per kilometer of _______. 2. ___________ from 10 km to 50 km about Earth, this layer contains ozone that absorbs much of the Sun's ultraviolet radiation. It contains most clouds and ____________. 3. _______ layers include the ...
March 15, 2010 by Terri

Physics
(1) body is taken to depth of 32km below the surface of the earth. Calculate the percentage decrease in the weight of the body at this depth (The radius of the earth is 6400km) (2)A wire of mass per unit length 5.0gm-1 is stretched between 2 points 30cm apart. The tension in ...
July 26, 2008 by matrixxavier

third side (picture attached)
I have already asked this in another thread. Here is more explanation: The radius of earth's orbit is 1.5 * 10^8km & the radius of venus's orbit is 1.1 * 10^8 km. We need to find out the distance from earth to venus for both positions of venus. A picture is uploaded here if ...
November 10, 2006 by Jen

Science
An alien spaceship is revolving around a spherical asteroid in a very low circular orbit. The period of revolution of the spaceship is 15 minutes. A research party of the alien students lands on the steroid and drills a tunnel through it along a diameter. They then launch a ...
June 18, 2011 by Freddy

Physics
Really need help with this asap plz~ there is a 4kg wooden block on top of a wooden ramp forming an angle of 37 degrees above surface.The block is placed 1.2 m up on the ramp and the ramp is connected to another wooden flat board.So when the block slides down, it continues a ...
December 8, 2013 by Joanne

physics
How high above the earth’s surface would you have to be before your weight would be only 0.6 its current value?
March 18, 2011 by nathan

Chem
suppose that you place exactly 100 bacteria into a flask containing nutrients for the bacteria and that you find the following data at 37 °C: t (min):0 15.0 30.0 45.0 60.0 Number of bacteria: 100 200 400 800 1600 What is the order of the rate of production of the bacteria? How...
March 12, 2014 by Bri

science
The earth wobbles slightly on its axis. which of the following earth processes might best account for these changes in earth's rotation? 1)underground nuclear explosions 2)population increases 3)variations in rainfall and river flooding 4)motion of continental plates and core ...
May 12, 2010 by kayci

physics
Astonomers discover a new planet orbiting a fixed point in space, but for reasons unknown, they can't directly observe a star where one is expected. The radius of the orbit is measured to be 1.85 x 10^8 km, and the lone planet completes an orbit once every 530 days. a.) ...
December 16, 2008 by Michelle

College Physics
When searching for gold, measurements of g can be used find regions within the Earth where the density is larger than that of normal soil. Such measurements can also be used to find regions in which the density of the Earth is smaller than normal soil; such regions might ...
September 21, 2011 by Please Help!!!

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