Answer: the wavelenght is 9.8 meters
Explanation:
We can use the relationship:
Velocity = wavelenght*frequency.
Initially we have:
wavelenght = 4.9m
velocity = 9.8m/s
then:
9.8m/s = 4.9m*f
f = 9.8m/s/4.9m = 2*1/s
now, if the velocity is doubled and the frequency remains the same, we have:
2*9.8m/s = wavelenght*2*1/s
wavelenght = (2*9.8m/s)*(1/2)s = 9.8 m
The answer is Computer game.
Scientific modelling is an experimental enterprise, the purpose of that is to make a distinct section or piece of the universe accessible to recognize, describe, quantify, imagine, or invent by connecting it to existing and customarily ordinarily allowed information.
When conducting a hypothesis test there are two possible decisions that you can make: reject the null hypothesis or fail to reject the null hypothesis.
A statistical hypothesis test is a method of statistical inference used to decide whether the data at hand sufficiently support a particular hypothesis. Hypothesis testing allows us to make probabilistic statements about population parameters.
When conducting a hypothesis test there are two possible decisions: reject the null hypothesis or fail to reject the null hypothesis. You should remember though, hypothesis testing uses data from a sample to make an inference about a population. When conducting a hypothesis test we do not know the population parameters. In most cases, we don't know if our inference is correct or incorrect.
When we reject the null hypothesis there are two possibilities. There could really be a difference in the population, in which case we made a correct decision. Or, it is possible that there is not a difference in the population (i.e., is true) but our sample was different from the hypothesized value due to random sampling variation. In that case we made an error. This is known as a Type I error.
When we fail to reject the null hypothesis there are also two possibilities. If the null hypothesis is really true, and there is not a difference in the population, then we made the correct decision. If there is a difference in the population, and we failed to reject it, then we made a Type II error.
Learn more about hypothesis test here : brainly.com/question/15980493
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Answer:
1.76m/s²
Explanation:
Acceleration is the time rate of change in velocity of a body. It is a vector quantity that is it has both magnitude and direction
From newton's second law of motion which states that the rate of change of momentum of a body is proportional to the applied force which takes place in the direction of force applied.
This law gives a formula which relate force, mass and acceleration.
Force = mass x acceleration
Given that force = 9.7N , mass = 5.5kg
Since force(F)= mass(m) x acceleration(a)
Therefore F = ma
Divide both sides by m
F/m = ma/m
Therefore,
Acceleration (a) = F/m
Acceleration = 9.7N ➗ 5.5kg
Acceleration = 1.76m/s²
The S. I unit of acceleration is m/s²
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Yes, 2 sounds of very different frequencies interfere.
From TRECA lesson glossary: Beats are produced when a series of alternating reinforcements and cancellations produced by the interference of the waves of different frequencies
