3 years ago

2. A company hires a security firm to patrol their stores and watch out for thieves. What is this an example of?

Physics

1 answer:

Lunna [17]3 years ago

4 0

Answer:

someone hiring someone

Explanation:

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"Influence" between bodies is reduced as the bodies are

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Both particles and big objects will be influenced by each other less if they are moved further apart.

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3 years ago

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A 0.68 kg squirrel is resting on a branch 8 meters above the ground. What is the gravitational potential energy of a squirrel? A

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Answer:

The gravitational potential energy of a squirrel is 53.312 J.

Explanation:

We have,

Mass of a squirrel is 0.68 kg

It is placed at a height of 8 m above the ground.

It is required to find the gravitational potential energy of a squirrel. It is possessed by an object due to its position. Its formula is given by :

$E=mgh\\\\E=0.68\times 9.8\times 8\\\\E=53.312\ J$

So, the gravitational potential energy of a squirrel is 53.312 J.

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3 years ago

Without friction, what happens? Check ALL

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3 years ago

A horizontally oriented pipe has a diameter of 5.8 cm and is filled with water. The pipe draws water from a reservoir that is in

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Answer:

v₂ = 97.4 m / s

Explanation:

Let's write the Bernoulli equation

P₁ + ½ ρ v₁² + ρ g y₁ = P₂ + ½ ρ v₂² + ρ g y₂

Index 1 is for tank and index 2 for exit

We can calculate the pressure in the tank with the equation

P = F / A

Where the area of a circle is

A = π r²

E radius is half the diameter

r = d / 2

A = π d² / 4

We replace

P = F 4 / π d²2

P₁ = 397 4 /π 0.058²

P₁ = 1.50 10⁵ Pa

The water velocity in the tank is zero because it is at rest (v1 = 0)

The outlet pressure, being open to the atmosphere is P1 = 1.13 105 Pa

Since the pipe is horizontal y₁ = y₂

We replace on the first occasion

P₁ = P₂ + ½ ρ v₂²

v₂ = √ (P1-P2) 2 / ρ

v₂ = √ [(1.50-1.013) 10⁵ 2/1000]

v₂ = 97.4 m / s

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4 years ago

2 (a) A plane from airport A flies 280 km to the east to airport B. The plane then travelled north to airport C, 190 km away. (i

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Answer:

See below

Explanation:

280 km east then 190 km north

Use Pythagorean theorem to find the resultant displacement

d^2 = 280^2 + 190^2

d = 338.4 km

Angle will be arctan ( 190/280) = 34.16 °

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2 years ago