False. you have to find out how many seconds are in the 25 min. 60 x 25 is 1500sec. Then multiply 1500 by .75 to get 1,125m. There are 0.001 kilometers in a meter. Move the decimal point three spaces to convert m to km. 1,125m becomes 1.125km
If im not mistaken it is true
Answer:
Explanation:
First of all, I used the specific heat of water as 4182 J/(kgC) and the specific heat of ethyl alcohol (EtOH) as 2440 J/(kgC); that means that we need the masses in kg, not g.
120.g = .1200 kg of ethyl alcohol. Now for the formula:
where spheat is specific heat.
Filling that horrifying-looking formula in with some values:
and
and
16(4182x + 292.8) = 83640x + 2928 and
66912x + 4684.8 = 83640x + 2928 and
1756.8 = 16728x so
x = .105 kg and the amount of water added is 105 g
To convert one length to another, a conversion is applied, but first we will propose some data to serve us when <u>applying the conversation.</u>
<u>Data:</u>
- <u>100 cm is the same as a meter.</u>
- <u>& 1 meter is the same as 100 cm.</u>
Now, we convert centimeters to meters.
<u>Conversion:</u>
<u>Explanation:</u>
They are <u>5 meters because multiplying 500 by 1</u> will give you the same result of 500, then we divide the 500 with the last amount that we have left, <u>which is 100, thus giving us a result of 5 meters</u>.
We have that the expression for the magnitude of the horizontal force F is
From the question we are told
find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are friction-less.
Generally the equation for Normal force is mathematically given as
Where
a signifies acceleration
Therefore
Equating above equations
i
Generally the equation for Force on wedge is mathematically given as
Therefore
The expression for the magnitude of the horizontal force F is
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