The metric unit of force is _____. kg kg/cm3 kg/cm2 N

Answer:

To estimate the final error on the density of the cube, we can consider the errors introduced by both the measurement of its volume and its weight.

1. Volume Measurement:

- The side length of the cube is given as 10 centimeters, and your ruler can measure to 1 mm accuracy.

- So, the error in measuring the side length is ±0.05 cm (half of the smallest measurement unit).

- To calculate volume, you need to cube the side length: Volume = (10 cm)^3 = 1000 cm^3.

- Using the error propagation rule, the relative error in volume is ±0.05 cm / 10 cm = ±0.005.

2. Weight Measurement:

- The weight is given as 1 kg nominally, which is equivalent to 1000 g.

- Your scale has a precision down to 0.1 g.

- So, the error in measuring the weight is ±0.1 g / 1000 g = ±0.0001 (0.01%) relative error.

Now, to calculate the final error in density, you need to consider both errors in volume and weight:

Density = Weight / Volume

Relative Error in Density = (Relative Error in Weight) + (Relative Error in Volume)

Relative Error in Density = (0.0001) + (0.005) = 0.0051 or 0.51%

So, the final estimated error on the density of the cube is approximately ±0.0051 g/cm^3 or ±0.51%.

Final answer:

The density of the cube is calculated using its mass and volume, with potential errors from the measurements of these quantities leading to a total estimated density error of approximately ±3.01%.

Explanation:

The density of an object is given by the formula density = mass/volume. In this case, the mass of the cube is given as 1 kg (or 1000 g for consistency with the scale's precision), and the volume of the cube can be calculated from the given side length using the formula for the volume of a cube, volume = side³, which equals 1000 cm³.

However, there are measurement errors associated with both the ruler and scale. The ruler can measure to the nearest mm (or 0.1 cm), so the error is ±0.1 cm on each measurement of the cube's sides, leading to a volume error of about ±3%. The scale can measure to the nearest 0.1 g, which gives a mass error of about ±0.01%. The total error in the density, obtained by summing these errors, is therefore approximately ±3.01%.

Learn more about Error Estimation here:

brainly.com/question/32513602

#SPJ2

Answer:

15 kg

Explanation:

The mass of the object can be found by using the formula

f is the force

a is the acceleration

From the question we have

We have the final answer as

15 kg

Hope this helps you

Answer:

-5.6m/s²

Explanation:

Given parameters:

Initial speed  = 11.2m/s

Time of running  = 2s

Unknown:

Acceleration of the puppy  = ?

Solution:

Acceleration is the rate of change of velocity with time.

So;

   Acceleration  =  

final speed  = 0m/s

 Acceleration  =    = -5.6m/s²

Final answer:

The puppy's acceleration is -5.6 m/s².

Explanation:

Acceleration is a measure of how quickly an object changes its speed. The formula for acceleration is a = Δv / Δt, where Δv is the change in velocity and Δt is the change in time. To find the puppy's acceleration, we can use the formula for acceleration:

acceleration = (final velocity - initial velocity) / time.

In this case, the initial velocity is 11.2 m/s and the final velocity is 0 m/s (since the puppy stops running). The time taken to stop is 2 s.

Substituting the values into the formula, we get:

acceleration = (0 m/s - 11.2 m/s) / 2 s.

Simplifying the equation gives us the acceleration of the puppy, which is -5.6 m/s².

Learn more about acceleration here:

brainly.com/question/11789833

#SPJ3