Final Google Docs sroom.google.com CESMTUMZAT 3/24 V/a/NIY3MTEZNIY30T 2.5 m Open with Weightlifter 15 kg 1.5 m 12. Calculate the force of Earth's gravity on the barbell. The formula for gravitational force near Earth's surface is F mg. Use g = 9.8 m/s². 13. What is the gravitational potential energy of the barbell? The formula for gravitational potential energy is GPE=mgh. 14. How much work did the weightlifter do to lift the barbell from the floor? Page 3 / 4 Q + 5 9 D 87 Littell, a division o 8 9

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PRINTER VERST Chapter 13, Problem 019 Your answer is partially correct. Try again. At what altitude above Earth's surface would the gravitational acceleration be 4.30 m/s?? (Take the Earth's radius as 6370 km.) Number UnitsTkm 1788.8 the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work

14.) A hypothetical planet has a radius 2.1 times that of Earth, but has the same mass. What is the acceleration due to gravity near its surface? Express your answer to two significant figures and include the appropriate units. gplanet= ____________ ______________   15.) A 1400-NN crate rests on the floor. a.) How much work is required to move it at constant speed 5.0 mm along the floor against a friction force of 330 NN . Express your answer to two significant figures and include the appropriate units. Wp= ____________ _____________ b.) How much work is required to move it at constant speed 5.0 mm vertically. Express your answer to two significant figures and include the appropriate units. Wp= _____________ ______________

Calculate the gravitational potential energy of a 8.9-kg mass on the surface of the Earth. Express your answer using two significant figures. Calculate the gravitational potential energy of a 8.9-kg mass at an altitude of 410 km. Express your answer using two significant figures.

Distance from |E. centre of earth R. 2R. 3R. 4R. 6R, 8Re Really, really far Note! Really, really far means an infinitely large distance 2. Fill in the chart showing the gravitational potential energies for a 1 kg rock at different positions from the centre of the earth. (R. = 6.4 x 10° m. M. = 6.0 x 10²ª graph. %3D kg) Sketch this as a

O Introduction to Tec... Welcome, Dominik Banegas D Performance Matters Question 11 of 13 - 381.Comp1.G06.20-21.Q1.1 Scientists need to know how gravity acts on a space shuttle so they can put the space 11. shuttle into orbit. They use an equation that describes how gravity relates to the mass of two objects and the distance between the two objects. Which term describes this equation? (DOK 2, SC.6.N.3.2) A. a model B. an observation С. D. a scientific law a scientific theory Bryce observes that the sun always seems to rise in the east. He talks with others and finds that everyone has the same observation. Which statement is a scientific law? (DOK 2, sC.6.N.3.2) 12. A. The sun rises in the east. Why d ooc th e sun rice in the oaet? Previous Pause F2 F7 F8

The following question is referring to the application gravitational potential energy in physics problems  and calculation of quantities related to planetary or satellite motion. Solve for the unknown quantities and round-off your final  answers in the nearest hundredths. A10,000-kilogram satellite is pulled toward Planet A, with a radius of 65,000 kilometers and a mass of 6.7 x 1033. When the satellite  is 2,000 kilometers from the planet’s surface, what is the satellite’s acceleration (providing that its engines are turned off)?

A body weighs 20N on the surface of the earth. What does it weigh on the surface of the moon? Calculate the gravitational potential energy of the body while it is in the moon's surface.

Gravitational Potential Energy An asteroid starts at rest infinitely far from Earth. The asteroid has a mass of 1.00x104 kg. G=6.67x10-11 Nm²/kg? MAsteroid= 1.00×104 kg MEarth=5.97x1024 kg REarth= 6.37x105 m What is the change in gravitational potential energy between the asteroid's starting point and when it hits the earth's surface? Does it gain or lose potential energy? -6.25 x 10e11 Submit Answer You have entered that answer before This question expects numeric answer. Tries 0/2 Previous Tries What is the final kinetic energy of the asteroid when it hits the earth's surface? Submit Answer Tries 0/2 What is the final velocity of the asteroid when it hits the earth's surface? m/s Submit Answer Tries 0/2