Answer:
Remains same
Explanation:
Mass of an object is measure of the matter it contains. It is independent of height. Commonly when we weigh something we measure its weight and not mass. Weight is a product of mass (m) and acceleration due to gravity (g).
As altitude changes, the amount of matter doesn't change thus the mass will remain constant. But due to the change in height the gravitational force will change and thus weight will vary.
pitch
c.
scales
b.
overtones
d.
percussion
Answer:
overtones
Explanation:
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%.
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%.
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%.
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Answer:
4 m/s
Step-by-Step Explanation:
E = mgh and h = E/mg
So if you put your numbers in the formula : h = 4000J/500 * 10
you will get h = 4/5 meters
use this , If the elevator moves from top to the ground in a constasnt acceleration you will have all energy (4000 J) transformed into acceleration to speed up its motion.
(All potential energy will be turned into movement energy). As explained in this formula;
mgh = mv²/2 , solve out (v) from the equation
v = √2gh = √2·10·4/5 (digits are together- not related to the problem, just for clarification) = 4 m/s
Answer the velocity of the elevator is
4 m/s
B. What makes people think that the universe started from a single point?
C. How can all galaxies be moving away from Earth?
D. What was the cause of the big bang?
Answer:
What was the cause of the big bang theory?
Explanation: