# Homework Help: Science: Earth

## Recent Homework Questions About Earth

**Physics**

A meteorite weighing 1860N strikes the earth with a velocity of 45.2m/s. What is its kinetic energy? Write in SN to one decimal place. When I plugged in (1/2)(1860N)(45.2m/s)^2, I got the answer 1.9e6, but it was incorrect. Please help. I'm really confused!

**English**

Birches by Robert Frost When I see birches bend to left and right Across the lines of straighter darker trees, I like to think some boy's been swinging them. But swinging doesn't bend them down to stay As ice-storms do. Often you must have seen them Loaded with ice a sunny ...

**earth science**

The active sections that are located along fault lines are called

**Earth Science**

List 3 distinguishing features found near a frontal boundary. Thanks

**Physics**

A 5.00 x 102 kg hot air balloon takes off from rest at the surface of the earth. The buoyant force lifts the balloon straight up, performing 9.70 x 104 J of work on the balloon. At the instant the balloon's upward speed is 4.08 m/s, the balloon will be ____ m above the surface...

**Geometry**

The radius of Jupiter is approximately 44,423 miles, and the radius of the Earth is approximately 3,960 miles. How many times larger is the volume of Jupiter than the volume of the Earth? Round your answer to the nearest whole number.

**Science**

True/false Earth's atmosphere oceans and continents began to form during the first several hundred million years of the Precambrian time.

**physics**

On the moon, the acceleration due to gravity is only 1.6 m/s/s. If someone on earth can throw a baseball 24.2 m high, how high could he throw it on the moon?

**physics**

A straight horizontal wire carries a current of 3.55 μA. A proton is moving above the wire in a direction parallel to it but opposite to the direction of the conventional current in the wire, at a constant velocity of 8.00×106 m/s. Assume that the force of gravity acts ...

**physics**

using 6400 km as the radius of earth, calculate how high above earth's surface you would have to be in order to weigh 1/16th of your current weight.

**History help**

Weathering and erosion break down rocks and slowly create a) oxygen for plants. b) Earth's poles. c) tectonic plates. d) new landforms.***

**science**

The Earth exerts an 850 N gravitational force on a man. What force does the man exert on the Earth? Answer in units of N

**Astronomy**

A simple temperature model for the solar nebula disk is ￼Tdisk(a) = 20 � SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. ￼(a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is...

**physics / astronomy**

A simple temperature model for the solar nebula disk is ￼Tdisk(a) = 20 × SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. ￼(a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is the ...

**physics**

A simple temperature model for the solar nebula disk is ￼Tdisk(a) = 20 × SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. ￼(a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is the ...

**Physics**

The diameter of the Moon is 3.78x10^6m. It subtends an angle of .00982 radians at the surface of Earth. How far is the Moon from Earth? (Please explain I can't wrap my head around this question.)

**English**

Would down to earth be considered a character trait?

**Physics**

A pendulum on earth swings with angular frequency ω. On an unknown planet, it swings with angular frequency ω /2. The acceleration due to gravity on this planet is A) 4g B) 2g C) g/2 D) g/4 I think it is C but I am not sure...

**English**

Part (a) – What theme do you think the poet is exploring in this poem? Part (b) – How does the poet use language in this poem to present his ideas? The poem is = FARM CHILD Look at this village boy, his head is stuffed With all the nests he know, his pockets with flowers, ...

**College Algebra**

Ozone occurs at all levels of Earth's atmosphere. The density of ozone varies both seasonally and latitudinally. At a given city, the density D(h) of ozone (in 10^−3cm/km) for altitudes h between 20 kilometers and 35 kilometers was determined experimentally. For the D(h...

**physics**

An object on earth has a weight of 54.3N, what is the weight of the object on the moon, assuming acceleration due to gravity on the moon is 1.61m/s^2?

**physics**

A gas molecule at the surface of the earth happens to have the root mean square speed (rms)for that gas at 0°C.lf it were to go straight up without colliding with other molecules.How high would it rise and what would happen to the maximum height reached if a gas with heavier ...

**Math**

Ozone occurs at all levels of Earth's atmosphere. The density of ozone varies both seasonally and latitudinally. At a given city, the density D(h) of ozone (in 10^−3cm/km) for altitudes h between 20 kilometers and 35 kilometers was determined experimentally. For the D(h...

**Physics**

A space vehicle is orbiting Earth in a circular orbit with a radius of 10,300,000m. What is the minimum increase in speed that is needed for the vehicle to escape Earth's gravitational field? The mass of the Earth is 5.97x10^24 kg and G = 6.67x10^-11 N*m^2/kg^2. The answer is ...

**ASTRONOMY**

Good evening all, I am working on a PowerPoint presentation for my Astronomy class about planet Earth - my question is: What is Earth's brightest apparent magnitude (if it has one)? I have searched every reliable source I know of (and that I come across), but I cannot seem to ...

**Physics**

calculate the escape velocity on the surface of earth, acceleration due to gravity will be 36 percent of its value on the surface of earth .if mean radius is 6400 km?

**Physics**

A pendulum consists of a 2.1 kg stone swinging on a 3.6 m string of negligible mass. The stone has a speed of 7.9 m/s when it passes its lowest point. (a) What is the speed when the string is at 60° to the vertical? (b) What is the greatest angle with the vertical that the ...

**Physics**

What is the apparent weight of a 70-kg astronaut 3800 km from the center of the earth's moon in a space vehicle moving at constant velocity and acceleration toward the moon at 2.9m/s^2? State the direction in each case.

**Calculus**

When estimating distances from a table of velocity data, it is not necessary that the time intervals are equally spaced. After a space ship is launched, the following velocity data is obtained. Use these data to estimate the height above the Earth's surface at 120 seconds. t (...

**geometry**

A total solar eclipse occurs when the moon passes between the earth and the sun, and the darkest shadow cast by the moon, called the umbra, hits the surface of the earth. If the umbra does not hit the surface, as shown in the following figure, then a total solar eclipse is not...

**Earth Science I suppose**

What does the pattern of convection have to do with the typical path of a hurricane?

**English 3**

"When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle ...

**Grammar**

I sighed as I went down the stairs, thinking what on earth does this woman want me to do now. How do i say this correctly?

**English**

Read the following passage and identify at least 3 elements of figurative language; explain how each element brings out the theme of the passage. "The Wrong Place" by Susan Michalski Lana woke up, curled in a corner of the seat at the back of the train. She lifted the shade to...

**Physics**

Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given)

**phsics**

a man weighs 1370N on earth what would he weigh on jupiter where free fall acceleration is 25.9 m/s2 the acceleration of gravity is 9.8 m/s2 in units of N

**physics**

Assuming you are on Earth, where acceleration due to gravity is 9.81 meters/second2, and you have a pendulum with a cord that is 0.65 meters long, what is the period?

**ms. sue**

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements about the solar system’...

**science**

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements about the solar system’...

**earth science**

Which of the following statement is False: A.Cinder cones are built from ejected lava fragments and are usually less than 300 meters high B.Calderas are large collapsed depressions having more or less circular form C.Most volcanoes are fed magma through short conduits called ...

**Math**

When a satellite is h kilometres above Earth,the time,t,in minutes,to complete one orbit is given by the formula t=Root of (6370+h)^3/6024 a) A telecommunications satellite is placed 30 km above Earth. How long does it take the satellite to make one orbit? b) A satellite is ...

**Physics I**

Using 6400 km as the radius on Earth, calculate how high above Earth's surface you would have to be in order to weigh 1/16th of your current weight. Show all work leading to your answer OR describe your solution using 3-4 complete sentences.

**Science**

occurs when the moon passes between the sun and the earth, and the shadow of the moon falls on earth.

**Math**

The slowest mammal on Earth is the sloth. A sloth might move along a tree at a maximum rate of just 3 ^-1m each minute. At this rate, how long will it take a sloth to climb a tree that is 33 m tall?

**physics**

A small block of mass m = 225 g is released from rest at point circled A along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 27.5 cm as shown in the figure below. (a) Calculate the gravitational potential energy of the block-Earth ...

**English**

Which of the following best explains the difference between informative and explanatory text? a. Informative provides readers a sense of why something happens, while explanatory tells the order in which something happened. b.Informative provides a reason to support an author...

**8th grade; English**

Which of the following best explains the difference between informative and explanatory text? a. Informative provides readers a sense of why something happens, while explanatory tells the order in which something happened. b.Informative provides a reason to support an author...

**phy111**

What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h? Take G=6 67 10−11Nm2 kg2, Mass of the earth is 5 98 1024kg

**phy111**

What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h? Take G=6 67 10−11Nm2 kg2, Mass of the earth is 5 98 1024kg

**physics**

A Titan IV rocket has put your spacecraft in a circular orbit around Earth at an altitude of 230 km. Calculate the force due to gravitational attraction between the Earth and the spacecraft in N if the mass of the spacecraft is 2300 kg.

**Physics**

A 66.0 kg base runner begins his slide into second base when moving at a speed of 4.4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to friction...

**8th grade language arts**

Which of the following best explains the difference between informative and explanatory text? a. Informative provides readers a sense of why something happens, while explanatory tells the order in which something happened. b.Informative provides a reason to support an author...

**physics**

Due to friction with the Earth's atmosphere, a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain why or why not.

**physis**

A man weighs 750 N on the surface of the earth. What would be his weight when standing on the moon? The masses of the earth and the moon are respectively, 5 98 0 kg and 7 36 0 kg. Their radii are respectively 6 37 0 km and 1 74 0 km

**science**

Due to friction with the Earth's atmosphere, a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain why or why not

**phyics**

_________ was the first to show that all objects fall toward Earth with constant ____________.

**Science- Astronomy**

Suppose we find a planet in another solar system that has an earth like atmosphere with plentiful oxygen but no life of any kind. Question= Is this discovery considered reasonable or surprising can you please explain? Thank you

**earth**

Broad areas of folded rock layers that resemble a bowl turned right-side up are called _____.

**Social Studies**

One reason for the difference between average temperatures in Rome when in Jan. the average temperature is 11 degrees Celsius and July average degree is 30 degree Celsius is: The amount of carbon dioxide present in the atmosphere The tilt of the Earth of its axis The tidal ...

**math**

The scale for an earth model is 1:40000000. The diameter of the earth is 12,756.32km. a)What is the diameter of the model in cm? I got 31.9cm (just need help on part b!) b) If the model is cut in half, how many jars of paint would be needed to paint each half if 1 jar covered ...

**Math**

The scale for an earth model is 1:40000000. The diameter of the earth is 12,756.32km. a)What is the diameter of the model in cm? b) If the model is cut in half, how many jars of paint would be needed to paint each half if 1 jar covered 10cm^2?

**Physics**

Ninja goes to space! If Ninja has a weight of 83.59 N on earth and she lands on a planet that has an acceleration due to gravity of 1.44 m/s2, then what is her weight on the new planet?

**World History (Ms. Sue)**

"It is [the Africans] who carry the 'Black man's burden...' In hewing out for himself a fixed abode in Africa, the white man has massacred the African in heaps...What the partial occupation of his soil by the white man has failed do; ...what the [machine gun] and the rifle, ...

**Physics**

Suppose the surface (radius = r) of a cylindrical space station is rotating at 29.1 m/s to provide artificial gravity. What must be the value of r for the astronauts to weigh 1/3 of their earth weight? Don't know how to start please help.

**Physics**

A satellite in circular orbit around the earth has an orbital speed of 5 km/s. What is the period of the orbit? Assume the mass of the Earth is 5.98e24 kg.

**p i s j**

The mass of fan astronaut is 100kg 1)find its weight on earth. 2)find its weight on moon. When the gravitational acceleration on moon is 1.6 ms

**Physics Help Please!!!! Check!**

if I weigh N on Earth and 5320 N on the surface of a planet, what is the acceleration due to gravity on that planet? mg=702N m=702/9.8=71.6 kg mg=5320N g=5320/71.6=74.3 m/s^2

**Physics**

You are making a trip in a space shuttle, and your friend Jimmy is in another space shuttle. He shares the same circular orbit with you, 370 km above earth. However, he is 21 km ahead of you. A) How long will it take you to catch up with your friend if you reduce your orbital ...

**Calculus**

Suppose a ball is thrown straight up into the air, and the height of the ball above the ground is given by the function h(t) = 6 + 37t – 16t2, where h is in feet and t is in seconds. At what time t does the ball stop going up and start returning to earth?

**Language Arts**

Why does the author of"Making Tracks on Matt's"sometimes use the pronouns we and us when he is writing about the rovers? A. He and the rovers are on the same spacecraft. B. There are hundreds of people involved in the mission. C. He and his team identify strongly with the ...

**physics**

How far apart should two protons be if the electrical force of repulsion is equal to the weight (attraction to the earth) of one of the protons? (

**physics**

A (1.35x10^2) kg box is falling near Earth’s surface. It is accelerating at (7.3000x10^0) m/s^2 [D]. What is the force of air resistance on the box?

**Science**

Where will gravity pull you in the center of the earth?

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...

**math physics**

A meteorite is a solid composed of stone and/or metal material from outer space that passes through the atmosphere and hits the earth’s surface. Find the kinetic energy of a meteorite with mass 250 kg that hits the earth at 25 km/s. Given: m=250kg v=2.5E4m/s <<< ...

**Physics**

The space shuttle, with an initial mass M = 2.41×106 kg, is launched from the surface of the earth with an initial net acceleration a = 26.1 m/s^2. The rate of fuel consumption is R = 6.90×103 kg/s. The shuttle reaches outer space with a velocity of vo = 4632. m/s, and a ...

**Earth science**

Can you please correct me if I am wrong or let me know what you think Thanks Y-A 1. Trees keep water in a watershed from accumulating silt before it empties into river. (i got true) 2. Permeable means capable of absorbing water. (i got false) 3. Old rivers are characterized by...

**math**

in 1933 wiley post flew around the world in 7 DAYS 18 HOURS. WILEYS TRIP WOULD BEST BE DESCRIBED AS FLYING AROUND THE ? OF TEH EARTH.

**Physics**

A cart of mass m (including the mass of the crane) has a pendulum hanging from a crane attached to the cart. There is no friction due to the normal force, u = 0, or wheel bearings of the cart wheels. The cart is experiencing and applied force to the left of 10N. The ball at ...

**science!! please help me!!**

1)When evolution was first proposed, which of the following was used as evidence to support the idea? (1 point) A)observations of nature*** B)laboratory experiments C)extensive fossil collections D)genetic sequences 2)How did Darwin and Lamarck differ in their thinking about ...

**physicss**

If there were no air resistance, with what speed would drops hit the Earth if they fell from a cloud 1980 m above the Earth’s sur- face? The acceleration of gravity is 10 m/s2

**physics**

An astronaut is traveling in a space vehicle moving at 0.520c relative to the Earth. The astronaut measures her pulse rate at 74.0 beats per minute. Signals generated by the astronaut's pulse are radioed to the Earth when the vehicle is moving in a direction perpendicular to ...

**physics**

A raindrop has a mass of 5.6 × 10-7 kg and is falling near the surface of the earth. Calculate the magnitude of the gravitational force exerted (a) on the raindrop by the earth and (b) on the earth by the raindrop.

**Math**

The mass of the Earth is close to 5.97x10^24 kg and the mass of Venus is close to 4.87x10^24 kg. What is the approximate combined mass of both planets A.1.08x10^25 B.2.91*10^49 C.1.08^10^48 D.1.08*10^25

**Science: Plate Techtonics (giving out medals)**

Hey there! I need help with some answers 1. Why do earthquakes occur along the San Andreas fault line? 2. Which of the following causes Earth's plates to move continuously? 3. Which of the following physical features are not caused by plate tectonics? PLEASE HELP! giving out ...

**College Science**

A chandelier is suspended by two identical, vertical chains side by side. The chandelier's mass is m = 5.3 kg. A. If the tension in one chain is represented by T, write an expression for this tension in terms of m and g, the gravitational acceleration on the Earth's surface. ...

**physics**

The weight of an astronaut plus his space suit on the Moon is only 270 N. A. How much do they weigh on Earth, in Newtons, assuming the acceleration due to gravity on the moon is 1.67m/s^2= 1584is this right? B. What is the mass of the astronaut and his space suit on the moon ...

**physics**

In the figure, a frictionless roller coaster car of mass m = 938 kg tops the first hill with speed v0 = 14.9 m/s at height h = 31.5 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? If the gravitational ...

**Algebra**

The diameter of the moon is about 3476 kilometers. The distance from earth to moon is about 384,400 kilometers. About how many moons could be lined up in a row between earth and the moon? Round to the nearest whole number. Please help answer thanks

**Earth Science**

Unlike most road maps, topographic maps can be used to find 1: the best route to a town 20 km away. 2: the temperature at any place on the map 3:the elevation above sea level. 4:the distance between two locations

**Science--2 questions! asap!**

During the processes of erosion and deposition, sediments that are the_____ in size will be carried the greatest distances before being deposited. Most___rocks form under conditions found a few kilometers under Earth's surface.

**Math**

A projectile is shot upward from the earth with an initial velocity of 320 ft/sec. (a) What is the velocity after 5 secs.? ft/sec. (b) What is the acceleration after 3 secs.? ft/sec^2.

**physics**

A red ball is thrown down with an initial speed of 1.4 m/s from a height of 28 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 24.9 m/s, from a height of 0.9 meters above the ground. The force of ...

**Science pplzzz!!**

Which of the following is true about rocks? Rocks are composed of only one mineral. Rocks do not contain any nonmineral matter. Coal is not considered a true rock. Most rocks are a mixture of minerals. 2. If granite undergoes high temperatures and high pressures within Earth, ...

**physics**

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 33m/s at an angle 28∘ above the horizontal.

**Science**

We are having a debate in Science class. We are each given two questions to debate each other. 1. The Climate is mainly influenced the by the sun? 2. The earth has been warmer in the past?

**physics**

Superman throws a boulder of weight 1850N at an adversary on the surface of the earth, where the magnitude of the acceleration due to gravity, g = 9.80m/s2 . What horizontal force must Superman apply to the boulder to give it a horizontal acceleration of 11.6m/s2 ?

**Science**

What best explains why carbon is present in so many kinds of molecules? A- It is abundant on earth B- It can form four covalent bonds C- It has valence electrons D- It can become ion I think it is B, however, I am unsure!

**Physics**

The height of the sun from point A is larger than from point B by 4.92 degree.If the distance between A and B is 500 Km, How long is the circumference of the earth? ( assume that earth is perfect sphere)