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3 years ago

If you needed to find the force needed to pull a small car up a ramp it would be best to use -

Physics

2 answers:

krok68 [10]3 years ago

5 0

the answer would be a.a spring scale

Len [333]3 years ago

3 0

You can use a spring scale, however, if you have all the information needed for the formula, it is best to use it as it offers a more precise answer.

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Escribir usando prefijos, en unidades del Sistema Internacional: longitud del ecuador, radios del núcleo y átomo, segundos de un

julia-pushkina [17]

la característica de los elementos

5 0

3 years ago

A person is listening with his ear against the rail for an oncoming train. When the train is 1.65 km away, how long will it take

Vitek1552 [10]

Answer:

Time = 0.317 seconds.

Explanation:

Given the following data;

Distance = 1.65km to meters = 1.65 * 1000 = 1650 meters

We know that the speed of sound in steel is equal to 5200m/s

To find the time to hear the sound of the whistle;

Time = distance/speed

Substituting into the equation, we have

Time = 1650/5200

Time = 0.317 seconds.

Therefore, it will take him 0.317 seconds to hear the sound of the whistle.

3 0

3 years ago

There are 92 naturally occurring elements. How does this relate to the number of compounds?

raketka [301]

C) Elements combine in different ways to create many more than 92 compounds.

Explanation:

The number of elements we have relates to the compound formation in that, elements combine in different ways to create many more than 92.

Elements are distinct substances that cannot be split up into simpler substances. Such substances are only made up of one kind of atom.

Compounds are substances that are made up of two or more kinds of atoms joined together in a definite grouping.

Several millions of compounds are known because elements can combine in different ways.
The number of elements do not increase because new elements are discovered, it is because elements have several ways by they combine.

Learn more:

Chemical reactions brainly.com/question/3953793

#learnwithBrainly

3 0

4 years ago

Seeing light coming out from a crack in the wall is what type of wave interaction?

Norma-Jean [14]

Answer:

becuase its where a wave (light etc) goes through a narrow area or across an edge of an area

3 0

3 years ago

A 7.8-kg solid sphere, made of metal whose density is 2500 kg/m3, is suspended by a cord. When the sphere is immersed in water (

Klio2033 [76]

Answer:

Density of the liquid = 1470.43 kg/m³

Explanation:

Given:

Mass of solid sphere(m) = 6.1 kg

Density of the metal = 2600 kg/m³

Thus volume of the liquid :

Volume of the sphere = 6.1 kg/2600 kg/m³ = 0.002346 m³

The volume of water displaced is equal to the volume of sphere (Archimedes' principle)

Volume displaced = 0.002346 m³

Buoyant force =

Where

is the density of the fluid

g is the acceleration due to gravity

V is the volume displaced

The free body diagram of the sphere is shown in image.

According to image:

Acceleration due to gravity = 9.81 ms⁻²

Tension force = 26 N

Applying in the equation to find the density of the liquid as:

Thus, the density of the liquid = 1470.43 kg/m³

3 0

2 years ago