Firm belief in the reliability, truth, ability, or strength of someone or something.
Answer:
0.70046 m/s²
2.732862 N
Explanation:
g = Acceleration due to gravity = 9.81 m/s²
m = Mass of yo-yo = 0.3 kg
R = Radius of rolling disk = 5.1 cm
r = Radius of rod = 1 cm
For a rolling disks the acceleration is given by
The acceleration of the yo-yo is 0.70046 m/s²
The tension in the string will be
The tension in the string is 2.732862 N
The anomalous expansion of water refers to the fact that water, unlike most substances, expands when it freezes. The density of water increases as temperature decreases but reaches a maximum at 4° C then begins to expand.
When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.
Answer:
Any force greater than 24.5 N
Explanation:
To find the frictional force is the 1st step. this can be found by multiplying the coefficient of friction and the normal force. normal force can be found by multiplying gravity (we will say 9.8 m/s/s) and the mass which is 10. You then multiply the result by the coefficient of friction which is 0.25 and it leads us to an answer to 24.5 N. This means that if you pull with exactly 24.5 N, the sled wouldnt move. So you need a force greater than 24.5 N and we have our answer.
I hope I helped correct me if im wrong
Answer:
The answer to your question is: 200 g
Explanation:
Need 250 gr of copper.silver alloy 20% copper by weight
250 g alloy -------------------- 100%
x --------------------- 20%
x = 20(250)100
x = 5000 / 100
x = 50 g of copper
Then
g of British sterling silver = 250 g alloy - 50 g of copper
g of British sterling silver = 200 g
