Physically prove whether the Earth is spherical or flat in shape

Q: Find the force on one end of a parabolic trough full of water, if the depth is 2 ft. and width…

A: Given Depth = 2ft = 2×0.3048 = 0.6096 m Width = 2ft = 2×0.3048 = 0.6096 m Density of water ρ = 1000…

Q: cond part of this question

A: Given : Height of trolley = 40 cm Distance at which trolley is placed = u cm Height of the image =…

Q: Who is the first astronout to walk in moon

A: We need to tell who is the first astronaut who ever walked on the moon.

Q: Two spheres are cut from a certain uniform rock. One has radius 4.45 cm. The mass of the other is…

A: Given data:  Radius of sphere 1 (r1) = 4.45 cm Mass of sphere 2 (m2) = 6 m1 Required: The radius of…

Q: Explain why the planets do not twinkle.

A: Twinkling happened because the apparent position of the body or object is not fixed due to the light…

Q: Round 9220. to two significant figures note : . is a decimal and not a period

A: In 9220, there are 3 significant digits. Last zero is a non significant digit.

Q: Future space stations will create an artificial gravity by rotating. Consider a cylindrical space…

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Q: Express, in percent, the difference in gravitational force when an object is located at sea level…

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Q: From the third floor of a tall building, the angle of depression of an object on the ground is 35.3,…

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Q: A person weighing 800 Newtons on Earth travels to another planet with twice the mass and twice the…

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Q: Use the dot product method to find the length of the shortest path between Cork and Sydney. Take the…

A: Radius of the Earth=6371km

Q: Two spheres are cut from a certain uniform rock. One has radius 4.45 cm. The mass of the other is…

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Q: Define centre of gravity.

A: Center of gravity can be defined as:

Q: Two spheres are cut from a certain uniform rock. One has radius 4.55 cm. The mass of the other is…

A: Given: The radius of one sphere is R=4.55 cm. The mass of other sphere is m'=7m.   The expression…

Q: Explain the changes in mass and weight of a body when it travels from Earth to Moon.

A: The mass of a body is the amount of matter contained in it. The rest mass of a body is constant. The…

Q: two spheres are cut from a certain uniform rock. one has radius 4.50cm. the mass of the second…

A: Radius of one sphere is, r1 = 4.50 cm

Q: A person weighing 800 Newtons on Earth travels to another planet with twice the mass and twice the…

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Q: Calculats the height of a satellite in a parking lot

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Q: Two spheres are cut from a certain uniform rock. One has radius 4.50 cm. The mass of the other is…

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Q: be 6 feet. It takes about 6 hours for the tide to switch between low and high tides. Find its…

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Q: 9.) Find the time it takes Saturn to orbit the sun . Show all work a.) in terms of seconds b.) in…

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Q: Find the force on one end of a parabolic trough full of water, if the depth is 2 ft. and width…

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Q: Define gravity in earth and life science.

A: According to universal gravitational law, every objects or bodies in the universe attracts each…

Q: Reliability refers to how reliable a research instrument is. For example, a weighed scale that shows…

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Q: Two spheres are cut from a certain uniform rock. One has radius 4.25 cm. The mass of the other is…

A: The expression for find density of material is ρ=mV=m43πr3 The spheres are cut from the same uniform…

Q: Find the force of gravity between two uniform spheres as they touch each other. Each sphere has a…

A: Mass of each sphere (m)=15 kg Radius of each sphere (r)=0.5 m Universal gravitational constant…

Q: Determine the height, area of the base, and volume of the cylinder below. Use the T key on your…

A: Given data The radius of the cylinder is given in the figure as r = 10 mm. The height of the…

Q: Express, in percent, the difference in gravitational force when an object is located at sea level…

A: Gravitational force at a height h is given by F=GMR+h2 where,             G=6.67×10-11 m2kg-2N…

Q: What is the least count if the value of the smallest division on the main scale of a horizontal…

A: Given  40 division of vernier are equal to 39 on the main scale  Smallest division on main scale is…

Q: For years, the tallest tower in the United States was the Phoenix Shot Tower in Baltimore, Maryland.…

A: a) The required time is,

Q: Two spheres are cut from a certain uniform rock. One has radius 4.45 cm. The mass of the other is…

A: Given data: Radius of one radius, r1=4.45 cm Radius of other, r2=? Mass of first sphere, m1=m Mass…

Q: What is the altitude of the plane? 730 m 550 m Note: Figure is not drawn to scale. Preview m

A: Solution                    Givenhypotenus length b = 730mbase length l = 550 m

Q: The unit of gravitational field strength g is newtons per kilogram. Explain how the unit of…

A: The expression for the gravitational field strenght g is given by: F=mgg=Fm Here, F is the force, m…

Q: ocalculate the radius of the moon's orbit (in units of 106 m).

A: Answer       7.3 in units of 106 . Explanation  is as follow.

Q: If the radius of the Earth is 6000Km what will be the weight of 120kg body if taken to a height of…

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Q: two spheres are cut from a certain uniform rock. one has radius 4.50 cm. the mass of the other is…

A: Given-   r2 = 4.50 cm = 0.45 m m1m2=51

Q: Use any circular object you may wish to use to measure its area and briefly describe the object you…

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Q: 6 identical spherical water droplets of radius 22

A: Since density is constant volume remains same.

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.