1. It is debated that a certain civilization knew how to forge metals. To determine the density of a chunk of metal found at an archeological site, the metal is placed in a cylinder of water and displaces 13.4 cm' of water. If the mass of the metal is 108.6 g, what can be said about the civilization? Explain. (Hint: Prin-7.29 g/cm' and pcopper=8,9 g/cm')

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Q: Chapter 06, Problem 035 The two blocks (m = 14 kg and M = 93 kg) in the figure are not attached to…

A: Given: Mass of block m=14 kg Mass of block  M =93 kg  static friction coefficient μs=0.40

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Q: A teeter totter is 6,7 meter long thin plank with a Muss of iskg. Itis balanced at its Center if…

A: moment of inertia of rod = (1/12)(15)(6.7)2  = 56.1125 kg m2Moment of inertia of child =31 (6.7/2)2…

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A: Given data: Angle of inclination, θ=280 Distance covered, d=55 m Coefficient of friction, μ=0.090

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Q: 1)What is the magnitude of F between two charges of 5.0 pC separated by 1.0mm?

A: The force between the two charge particles is given by  F = k q q'r2

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Q: An Atwood machine consists of two masses, ma = 7.0 kg and mg= 9.0 kg, which are connected by a rope…

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Q: A person exerts 195 lb of force to push a box horizontally across a rough floor. If the person…

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Q: Mk=0.7. 10 kg TIR A 10-kg box is at sliding to the right on the floor. A rope is attached to the box…

A: mass of box = m = 10 kg co efficient of friction = 0.7 acceleration = a = 6 m/s2

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Q: A room has dimensions of 7.3 m by 5.7 m by 3.2 m. The pressure inside the room is 90,000 Pa and the…

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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.