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jeyben [28]
3 years ago
14

Where is the oldest operating lighthouse on the west coast on an island in america?

Physics
1 answer:
Vera_Pavlovna [14]3 years ago
6 0
The Alcatraz Island light house off the coast of California's San Francisco Bay. It is located on the south side of the island.
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Amy wants to know whether or not an item will float when placed in a fluid. Which of the comparisons below, when true, will mean
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A. The object is made of stone or metal, which always sink.

B. The force of gravity is stronger than the buoyant force.

C. The buoyant force is stronger than the force of gravity.

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3 years ago
An engine develops 500 Nm of torque at 3900 rev/min. The power developed by the engine is ...
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204kW

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True or false Weight is constant every place in the universe.
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False. it's depend on g -constant.

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3 years ago
In each case, lifting or pushing, why must you exert a force to move the object? Q1-2: How much more effort is required to lift
musickatia [10]

Answer:

  1. Newton's first law applies. An object at rest will stay that way until a force is applied.
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Explanation:

A force is required to move an object because the object will stay at rest until a force is applied.

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The effort required to lift or push two masses instead of one depends on the desired effect. For the same kinetic energy, no more effort is required. For the same momentum, half the effort is required for two masses. For the same velocity, double the effort is required.

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Which moves more: the air molecules or the energy of the sound?
MatroZZZ [7]

Answer:

A sound wave can be affected by a lot of different variables. As an audio engineer some of the more common things we deal with involve air temperature, humidity and even wind. The first two affect the speed at which the wave travels, while wind can actually cause a phase like effect if it is blowing hard enough. Another big one though not directly related to the air is walls and other solid objects that cause the sound wave to bounce off of them and reflect. This causes a secondary wave that isn’t as strong as the first wave but is the cause of “muddy” sounding venues when you are indoors.

Explanation:

7 0
3 years ago
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