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A spring scale reads 20 N as it pulls a 4 kilogram box across a table. What is the magnitude of the force exerted by the mass on the spring scale, if the frictional force is assumed to be equal to zero?

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Please answer the questions on the pages Arithmetic with Decimals, part 2: Multiplying Decimal Numbers, Part 3: Dividing Decimal Numbers.

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True or false: Less sunspots mean that Earth has warmer climate

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A car traveling at 60 km/h will skid 30 m when its brakes are locked. If the same car is traveling at 180 km/h, what will be the skidding distance? Be sure to show all work to support your answer. Please show equations

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What two aspects of a force do scientists measure? A) Magnitude and Direction B)Position and size C) Size and Stability D)Strength and magnitude

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Molly is jogging on the treadmill. After 20 minutes, her heart rate has not increased, she is able to talk, and she is not sweating. If Molly wants to improve her fitness level, what should she do? She should switch to another piece of gym equipment. She should increase the intensity of her exercise. She should take a day off to rest and recover. She should decrease her heart rate.

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Starting from the center of the earth number it’s layers in correct order

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Almost all energy on earth comes from the

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The Earth, the Sun, and the rest of the solar system are almost unimaginably old when viewed on a human time scale. While modern humans first evolved approximately 200,000 years ago, the age of the Earth, the Sun, and the rest of the solar system is approximately _______ years. a 100,000 b 4.6 billion c 4.6 million d 200,000

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Two 100 kg bumper cars are moving toward each other in opposite directions. Car A is moving at 8 m/s and Car B at –10 m/s when they collide head–on. If the resulting velocity of Car B after the collision is 8 m/s, what is the velocity of Car A after the collision? (I saw this question was asked previously, but the person did not provide the correct answer…)

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How does flowing water change the earths surface

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What source of earths magnetic field is ______________

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On pluto, a baby would weigh 2.7 newtons. how much does this baby weigh on earth?

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What is the mass of an object that weighs 500 newtons on earth? a. 0 kg b. 51 kg c. 512 kg d. 4900 kg

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Tom has a mass of 73 . 9 kg and Sally has a mass of 59 . 8 kg. Tom and Sally are standing 27 . 9 m apart on a massless dance floor. Sally looks up and she sees Tom. She feels an attraction. If the attraction is gravitation, find its mag- nitude. Assume both can be replaced by spherical masses and that the gravitational constant is 6 . 67259 × 10 ^− 11 N · m^ 2 / kg^ 2 . Answer in units of N.

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If a force of 14 n is applied to an object with a mass of 5 kg the object will accelerate at ______ m/s^2 Just need help with the formula and understanding so I can do rest on my own, can’t talk to teacher right now since its Saturday night, thank you in advance

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If you stand on a bathroom scale,the spring inside the scale compresses 0.50 mm, and it tells you your weight is 700 N. Now if you jump on the scale from a height of 1.3 m, what does the scale read at its peak?

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Do you think it is alright for a girl to try to win a race for a bike ride explain your answers

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If you could visit Pangaea, what animals would you most likely find there? Penguins Dinosaurs Eagles Mammals In the phrase, “The earth’s mantle is composed of molten rock,” what does “molten” mean? Orange Icy Solid Melted If the earth were an apple, which part would be the crust? The core The seeds The skin The stem What has to happen before rock from the earth’s mantle becomes a new piece of crust? It has to cool It has to heat up It has to drift It has to explode Which term best describes the movement of continents? Rapid Gradual Nonexistent Fleeting At convergent boundaries, one plate is sometimes subducted below another. What is the best definition of “subduction?” Moving from side to side Pulling apart Pushing upward Sliding under What can you infer from the fact that fossils of tropical animals have been found in Antarctica? The tropics were once located at the earth’s southernmost point The Antarctic plate must have once been closer to the equator The volcanoes that once warmed Antarctica are now dormant Antarctica does not lie on top of a tectonic plate Where would you be most likely to find a boundary between a continental and an oceanic plate? In the center of the Pacific ocean In the center of North America Off the West Coast of North America At the boundary between Canada and the United States What geological feature would you most likely find at a convergent boundary? Mountains Islands Deserts Rivers How is a transform boundary different from a convergent boundary? Plates move apart at transform boundaries, and toward each other at transverse boundaries Plates move underneath one another at transform boundaries, and over one another at convergent boundaries Plates move toward each other at convergent boundaries, and side-to-side at transform boundaries Continental drift does not occur along convergent boundaries; it does occur at transform boundaries

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Scientists are testing a new drug, which they think might allow people to memorize large amounts of information. Group A is taking a sugar pill. Group B is taking the new drug. Both groups are 25–35 years old and are not taking any other medicine. After a month, both groups will be given a memorization test, and scientists will compare each group’s ability to memorize new information. Which term would describe Group A? A. control group B. independent group C. experimental group D. dependent group

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Scientists are testing a new drug, which they think might allow people to memorize large amounts of information. Group A is taking a sugar pill. Group B is taking the new drug. Both groups are 25–35 years old and are not taking any other medicine. After a month, both groups will be given a memorization test, and scientists will compare each group’s ability to memorize new information. Which choice is the independent (manipulated) variable? A. the sugar pill B. the new drug C. the ability to retain short-term memories D. the test subjects

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The moon has it the greatest effect on earths what ?

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Two rock climbers, bill and karen, use safety ropes of similar length. karen’s rope is more elastic, called a dynamic rope by climbers. bill has a static rope, not recommended for safety purposes in pro climbing. karen falls freely about 2.0 m and then the rope stops her over a distance of 0.9 m.

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What holds down earths atmosphere in its place?

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Compared to a stationary galaxy, light from a galaxy that is moving away from earth will appear _____. a. bluer b. redder c. the same

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Earth’s layers formed as result of differentiation. During differentiation, different zones of elements form layers and today we know these layers are made up of different elements. Certain elements sunk to the center while others collected near the surface. We might predict that the __________ elements, like iron and nickel, formed the core. A) heavier B) least dense C) light weight D) first crystallized

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How is the crust DIFFERENT from the other layers of the Earth? A) It is hotter. B) It is thinner. C) It is mostly liquid. D) It is under pressure.

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How does the density of the Earth’s core compare to the other layers of the Earth? A) The core is the densest layer. B) The core is the least dense layer. C) The core is only less dense than the crust. D) The core is only less dense than the mantle.

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How does the temperature of the Earth’s mantle compare to the other layers of the Earth? A) The mantle is hotter than the core. B) The mantle is hotter than the crust. C) The mantle is the same temperature as the core. D) The mantle is the same temperature as the crust.

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The outer core of the earth is primarily made of A) solid metal. B) molten metal. C) primarily water. D) unknown materials.

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