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tatiyna
2 years ago
13

A car accelerates at 4 m/s/s from rest. What is the car's velocity after it travels 20 m?

Physics
1 answer:
MrRa [10]2 years ago
3 0
The cars velocity after it travels 20 m is 4 because you have to divide it by the miles that the car is traveling and the 4 miles from the rest; and your finally answer being 5
Answer: 5
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On a perfect fall day, you are hovering at low altitude in a hot-air balloon, accelerated neither upward nor downward. The total
Stella [2.4K]

Explanation:

Since the balloon is not accelerating means that the net force on the balloon is zero. This implies that the weight of balloon must be equal to the buoyant force on balloon.

Hence, the buoyant force equals the weight of air displaced by the balloon, also 20,000 N.

Weight of the air displaced = density of air × volume

The density of air at 1 atm pressure and 20º C is 1.2 kg/m³  

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3 0
2 years ago
To balance a chemical equation we use______. <br> -coefficients <br> -subscripts
Vitek1552 [10]

Answer:

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Explanation:

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3 0
3 years ago
Which of the following contains the majority of the mass in the solar system?
Bingel [31]
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3 0
3 years ago
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Mass of 23.94kg and volume 2.10 cubic centimeters. Calculate the density of the copper wire in si units (ų/mm cubic)
Kamila [148]

Answer:

Density = 1.14 kg/mm³

Explanation:

Given the following data;

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To find the density;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

Density = \frac{mass}{volume}

Substituting into the equation, we have;

Density = \frac{23.94}{21}

Density = 1.14 kg/mm³

7 0
2 years ago
A high speed train travels with an average speed of 227 km/h. The train travels for 2 h.how far does the train travel in meters?
Sedbober [7]

2 x 227 km/h = 454 m

8 0
2 years ago
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