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dalvyx [7]
4 years ago
11

A hockey pack is set in motion across a frozen pond. If the ice friction and air resistance are neglected, the force required to

keep the pack sliding at constant velocity is A) Zero newtons. B) Equal to the weight of the pack. C) The weight of the pack divided by the mass of the pack. D) The mass of the pack multiplied by 9.8 meters per second per second. E) None of these.
Physics
1 answer:
Reil [10]4 years ago
3 0

Answer:

A) Zero newtos

Explanation:

To solve this exercise, let's use Newton's first and second law, in the first law it is established that every body is at rest or moving with constant speed if the external forces are zero. In the second law it is determined that the sum of the force is proportional to the acceleration of the body.

Let us apply our case, the body is at constant speed which implies that the sum of all external forces is zero. In addition, there is no friction, so we do not need a force that counteracts them.

Consequently, the force applied must be zero.  

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6 0
3 years ago
Read 2 more answers
Find the volume of the tire with dimensions
Vinvika [58]

The volume of the tire at the given diameter and thickness of tube is determined as  1,128.2 cubic inch.

<h3>What is volume?</h3>

Volume is a scalar quantity expressing the amount of three-dimensional space enclosed by a closed surface.

<h3>Volume of the tire</h3>

The volume of the tire is the measure of the product of area and thickness of the tire.

The volume of the tire is calculated as follows;

Radius of the tire = 0.5 x 26" = 13"

Volume of the tire = Area x thickness

Volume of the tire = πr² x h

where;

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  • h is the thickness of the tube

Volume of the tire = π(13)² x (2.125)

Volume of the tire =  1,128.2 cubic inch

Thus, the volume of the tire at the given diameter and thickness of tube is determined as  1,128.2 cubic inch.

Learn more about Volume of tire here: brainly.com/question/1972490

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7 0
2 years ago
_______ is energy that is transferred due to a difference in temperatures.
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Answer:

C. Heat

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HEAT is energy that is transferred due to a difference in temperatures.

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6 0
2 years ago
Which of the following statements is true?
Tresset [83]

Answer:

option A

Explanation:

the correct answer is option A

when the air temperature increases the relative humidity decreases.

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higher the water vapor more will be the amount of moisture content.

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3 years ago
You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought g
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The Earth's radius is 6371 km. So that's our distance from the center when we're on the surface.

The Shuttle astronaut's distance from the center, when s/he's in orbit, is 330 km greater ... that's 6701 km.

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(6371/6701)^2 = 90.4 %

of its value on the surface.
8 0
3 years ago
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