How does Newton's law work? Give an example of the formula in a word problem.

Answers

Answer 1

Answer: Newtons Law works with friction, gravity, and falls.

Also, the formula would be: F = ma

Force = acceleration * mass

Example: The force on a bike is 30 Newtons. The mass of the bike is 6 kg. What is the acceleration of the bike?

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Which of the following has the lowest U value?a. plywood
b. poured concrete
c. expanded polyurethane
d. asbestos shingles

Answers

Answer:

c. expanded polyurethane

Explanation:

Thermal performance of a building fabric is measured in terms of heat loss and is expressed as U-value or R-value. U-value is the rate of heat transferred through a structure divided by the difference in temperature across the structure with a unit of measurement of W/m²K.You can calculate the U-value of a by getting the reciprocal of the sum of thermal resistances , R, making the building material.

If you have the value of R, then U=1/R

Material size R U

plywood 1" 1.25 0.8

Poured concrete 2" 0.99 1.010

Expanded polyurethane 1" 6.5 0.1538

Asbestos shingles 1" 0.03 33.33

The material with lowest U-value is expanded polyurethane

1. Straight-in spaces can leave you a safer out if.
A. you're able to pull through facing out
B. you're able to park farther away from the building
C. you're able to reverse out of the parking spot
D. they are located in a parking garage

Answers

Option (A) is correct

Straight-in spaces can leave you a safer out if you're able to pull through facing out

Straight-in parking:

Straight-in parking is a method to park a vehicle where the vehicle is guided and parked safely in between the guiding lines.

Each car is provided a separate slot for parking. It thus helps to prevent blockage of cars. Each car can move in and out freely without any congestion.

Straight-in parking is the most traditional approach of parking which saves time for drivers, allows for two-way traffic as well.

The driver can line up from multiple angles. But the safest way to leave out the Straight-in parking is to pull through facing out.

So option A is the most suitable option in the provided case.

Learn more about straight-in parking:

brainly.com/question/3903210?referrer=searchResults

Answer: A. You're able to pull through facing out

Explanation: DriversED

F has _valence electrons.
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Answers

As far as I know it's 7

A person is pulled to the right on a sled (total mass of 52.9 kg) across the surface of a frozen pond with a force of 67.7 Newtons so that they move with a constant velocity. What is the force of friction acting on the sled?

Answers

Answer:

67.7 N

Explanation:

Draw a free body diagram of the person on the sled. There are four forces:

67.7 N to the right,

friction force to the left,

weight force down,

and normal force up.

Constant velocity means 0 acceleration.

Sum of the forces in the x direction:

∑F = ma

67.7 N − F = 0

F = 67.7 N

Describe the role of the grass in the food web

Answers

Grass is a producer. It gets its energy from the sun, which i might add is by a process called,"photosynthesis", meaning the grass makes its own food. With this bew energy an animal such as a rabbit comes to eat it, that energy that the grass collected is now the rabbits.

If you were trying to build a sound proof room, which of the following materials would you choose in order to absorb the most sound, based on the coefficient of absorption for each material