PHYSICS HIGH SCHOOL

A student want to see what floats better a 1 pound piece of wood with a density of 0.90g/ml or a 10 pound piece of wood with a density 0.90g/ml explain your reasoning

Answers

Answer 1
Answer:

The buoyancy of an object depends on its density relative to the density of the fluid it's placed in, typically water in everyday scenarios. When an object is placed in a fluid (like water), it will float if its average density is less than that of the fluid. In other words, if the object is less dense than the fluid, it will float.

In this case, both pieces of wood have the same density of 0.90 grams per milliliter (g/ml), which is less dense than water. Therefore, both the 1-pound piece of wood and the 10-pound piece of wood will float in water.

However, it's important to note that the buoyant force acting on these objects will be the same for a given volume of wood because they have the same density.

The 10-pound piece of wood will displace more water (have a larger volume) to support its weight, while the 1-pound piece of wood will displace less water (have a smaller volume) to support its weight. The 10-pound piece of wood will have more of its volume submerged compared to the 1-pound piece due to the weight difference, but both will float.

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A wrench reduces the force needed to tighten a bolt. For this statement to be true, the wrench _____.

Answers

Answer:

Increases the input force and decreases the input distance

Explanation:

When a force is applied over a given distance, there is an inverse relationship between the applied force and distance. Example is a tommy bar, when the length increases the force required decreases. This principle is applied to this wrench.

It is B, I honestly didn't know

The reflection of light waves from a rough surface is called _____ reflection.a. diffuse
c. regular
b. scattered
d. fragmented

Answers

The correct answer is (a.) diffuse. The reflection of light waves from a rough surface is called DIFFUSE reflection. This type of reflection reflects light diffusely mostly from a surface that is a non-absorbing material such as plaster and polycrystalline.

Choose the correct answer. The cord you use to plug in an electric lamp has an outer protective covering made of rubber or plastic because, unlike most metals, neither rubber nor plastic is a good ______________ of electricity.A) hypothesis

B) force

C) energy

D) conductor

Answers

D) conductor of electricity

Draw the Lewis dot Structure for the molecule C2H6​

Answers

Answer:

This means that the Lewis dot structure for C2H6 must account for 14 valence electrons, either through bonding between atoms, or through lone pairs. So, the two C atoms are placed in the center of the molecule.

A crane lifts 400 N crate full of baked beans 15m how much work is done by the crane ?

Answers

Lookattheattachedpicture

Hope itwillbehelpfultoyou..

Gravity is a force of attraction between objects that is due to their weight and height between one another. a. True
b. False

Answers

The statement above is false. The statement should be: "Gravity is a force of attraction between objects that is due to their masses." Mass and weight are often interchanged. Gravitational force depends on the masses of objects, but the size of this force is what weight is. So the relationship is:

Weight = mass x gravitational constant = mass x 9.81 m/s^2
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