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3 years ago

What must be the reaction force when someone hits a tree with an axe?

Physics

1 answer:

Iteru [2.4K]3 years ago

7 0

Answer: The correct option is that the axe handle applying a force to the person's hand.

Explanation:

This reaction force is due to Newton's third law of motion. This law states that for every action there is equal and opposite reaction to it. This implies that when a force is being exerted on a surface, the surface must exert a force that is equal and opposite in direction to the exerting force. This law represents a certain symmetry in nature that forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.

A typical example of Newton's third law includes:

--> When you hit a tree with an axe: with your hand you exert a force on the tree with the intention to cut it down(action force). The same force you excreted on the tree would be felt in your hands (reaction force).

--> when air rushes out of a balloon: when air escapes for a balloon, the opposite reaction is that the balloon flies up.

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Determine whether the underlined numerical value is a parameter or a statistic. explain your reasoning. a certain zoo

irinina [24]

Parameter, because the data set of all 843 animals in a zoo is a population.

The population of all animals in the Zoo is 843

Proportion = 8%, which is the ratio regarding the population. So 8% is populaton proporiton, i..e Parameter .

A zoo, short for the zoological garden, is a place where animals are kept in enclosures, cared for, presented to the public, and occasionally bred for conservation efforts. The phrase zoological garden refers to zoology, the study of animals. It is also used to refer to an animal park or menagerie. In the United States alone, over 181 million people visit zoos every year. The goal of the modern zoo, which first appeared in the 19th century in the United Kingdom was to entertain and inspire the public by offering scientific inquiry and later educational exhibits. The London Zoological Gardens, which was opened to the public in 1847 after being opened for scientific study in 1828, is where the abbreviation "zoo" first appeared.

To learn more about the Zoo, visit:

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6 0

2 years ago

A standing wave on a string that is fixed at both ends has frequency 80.0 Hz. The distance between adjacent antinodes of the sta

Bingel [31]

Answer:

Speed of the wave in the string will be 3.2 m/sec

Explanation:

We have given frequency in the string fixed at both ends is 80 Hz

Distance between adjacent antipodes is 20 cm

We know that distance between two adjacent anti nodes is equal to half of the wavelength

So $\frac{\lambda }{2}=20cm$

$\lambda =40cm$

We have to find the speed of the wave in the string

Speed is equal to $v=\lambda f=0.04\times 80=3.2m/sec$

So speed of the wave in the string will be 3.2 m/sec

4 0

4 years ago

Most ___________________ are located on the ocean floor.

Vaselesa [24]

Answer:

Transform boundaries

Explanation:

I TOOK A TEST ON THIS QUESTION

4 0

3 years ago

The first dancer in the line is 10 m from the speaker playing the music; the last dancer in the line is 120 m from the speaker.

abruzzese [7]

Answer: 0.321 seconds

Explanation:

Let assume that air has a temperature of 20 °C. Sound speed at given temperature is $343 \frac{m}{s}$ . As sound spreads at constant speed, time can be easily found by using this formula: