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3 years ago

A body has density of 2kg/m² and volume 2m². Find the mass of the volume

Physics

2 answers:

creativ13 [48]3 years ago

7 0

Answer:

4kg

Explanation:

density is mass/ volume, 4/2= 2

expeople1 [14]3 years ago

3 0

Answer:

The mass is 4kg

Explanation:

Density of an object is defined as the ratio of the mass of the object to its volume. Mathematically,

Density = mass/volume

Mass is measured in kilogram (kg)

Volume is measured in m³

From the formula;

Mass = Density × volume

Mass = 2kg/m³ × 2m³

Mass = 4kg

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Answer: 390, right

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2 years ago

If you had 8 balls and 7 of them were a certain weight, and 1 of them was heavier, how could you find the heaviest ball. All the

dybincka [34]

Answer:

There are two method of comparing the balls 1) using a balance 2) by only 2 weighings.

Explanation:

There are two method of comparing the balls 1) using a balance 2) by only 2 weighings.

Make the following groups - --- (1,2,3),(4,5,6),(7,8)

Step 1. compare the Weigh (1,2,3) and (4,5,6)

there are 2 possible outcomes:

1---both the group are of same weight. and named as (Case A)

2--- one of the group is heavier than other and named as (Case B)

Step 2. Let examine both case

In Case A --in this case, now compare the weight of 7th and 8th ball. By this you have recognize the heavier ball by 2 weighing method.

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3 years ago

A car is moving at 25.5 m/s when it accelerates at 1.94 m/s^2 for 2.3 s. What is the car's final speed? (Keep in mind direction

Stolb23 [73]

Answer:

29.96m/s

Explanation:

Given parameters:

Initial speed = 25.5m/s

Acceleration = 1.94m/s²

Time = 2.3s

Unknown:

Final speed of the car = ?

Solution:

To solve this problem, we are going to apply the right motion equation:

v = u + at

v is the final speed

u is the initial speed

a is the acceleration

t is the time taken

Now insert the parameters and solve;

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2 years ago

Which of these nebulae is the odd one out?

Lubov Fominskaja [6]

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Explanation:

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2 years ago

Read 2 more answers

A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark. It does this in 3 seconds. What is the speed? What is

Alekssandra [29.7K]

Answer:

Speed= 6cm/s and velocity= 6cm/s in the negative direction

Explanation:

the change in position is from 45cm to 27 cm (moving towards the negative x direction)

$\Delta x = 45 cm - 27 cm = 18 cm$

And the change in time:

$\Delta t= 3 s$

Now we must define the difference between speed and velocity:

Speed is a scalar quantity, which means that it is a number. Velocity is also a number but you must also indicate the direction of the movement.

Thus, the speed is:

$speed= \Delta x/ \Delta t = 18cm/3s=6cm/s$

An the velocity is:

6cm/s in the negative direction

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3 years ago

A body has density of 2kg/m² and volume 2m². Find the mass of the volume​

A body has density of 2kg/m² and volume 2m². Find the mass of the volume