Hi!
The weight force is given by: F = mg (mass x gravity)
Then, we have:
29 = m * 9.8
29/9.8 = m
m = 2.95 kg
;)
Answer;
Hypothesis
Explanation;
A hypothesis is a tentative explanation that accounts for a set of facts and can be tested by further investigation. Scientific hypotheses must be posed in a form that allows them to be tested.
- It represents a possible explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation. Once you do the experiment and find out if it supports the hypothesis, it becomes part of scientific theory. An example of a hypothesis; Hypothesis: Bacterial growth may be affected by temperature.
Answer:
The original concentration of ethanol is 16%(v/v)
Explanation:
concentration before dilution, C1 = ?
Concentration after dilution, C2 = 0.32% (v/v)
Volume before dilution, V1 = x
Volume after dilution, V2 = 50x
From the dilution principle
C1V1 = C2V2
(C1) * x = (0.32) * 50x
C1 = (16x)/x
C1 = 16%(v/v)
It has the highest birthrate and will triple its population by 2050. "There is a lack of appropriate infrastructure, health care, access to hospitals, education and jobs for these people," Kaps said, outlining the dilemma many African countries will face in the future. Despite waning infant mortality, the average birthrate of 4.7 children per woman remains high when compared with the rest of the world.
Answer:
r₂/r₁ = 1.82
Explanation:
The electric field due to a point charge, has the following expression:
For a distance r₁, the magnitude of the electric field is 395 N/C, so we can solve for r₁², as follows:
r₁² = 
(1)
For a distance r2, the magnitude of the electric field is 119 N/C, so we can solve for r₂², as follows:
r₂² = 
We can find the quotient r₂/r₁, from (1) and (2):
r₂/r₁ =
= 1.82
