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Pavlova-9 [17]
3 years ago
10

PLease someone help me with number 2 it's due tomorrow it's homework

Physics
2 answers:
Vikki [24]3 years ago
7 0
3. I would say

6. Because there are two atoms of hydrogen in a molecule
Marta_Voda [28]3 years ago
5 0
It would be the same, The Law of Conservation of Mass basically states that a closed system experiment would have the same mass before and after the experiment. 
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At highway speeds, a particular car is capable of an acceleration of about 1.6 m/s?. At this rate,
kicyunya [14]

Given parameters:

Acceleration of the car = 1.6m/s

Initial speed  = 80km/hr

Final speed  = 110km/hr

Solution:

Time taken to achieve this speed = ?

Solution:

Acceleration is the rate of change of velocity with the time taken.

  Mathematically;

     a  = \frac{V - U}{T}

where a is the acceleration

           V is the final velocity

           U is the initial velocity

           T is the time taken

Now make the unknown time the subject of the expression;

      aT  = V - U

         T = \frac{V - U}{a}  

Convert the given acceleration to km/hr;

       1.6m/s  = 1.6 x \frac{m}{s}  x \frac{1km}{1000m} x \frac{3600s}{1hr} = 5.76km/hr

Input the parameters and solve;

       T = \frac{110 - 80}{5.76}  = 5.2hrs

The time taken is 5.2hrs

5 0
4 years ago
Someone help meeeee! please
Ratling [72]

Answer:

This looks like an example of combustion

Explanation:

5 0
3 years ago
Represent the following sentence as an algebraic expression, where "a number" is the
agasfer [191]

Answer:

2 (x+3)

Explanation:

8 0
3 years ago
The mass of a string is 5.9 × 10-3 kg, and it is stretched so that the tension in it is 200 n. a transverse wave traveling on th
bagirrra123 [75]

The velocity of the wave on the string is given by

v=\sqrt{\frac{T}{\frac{m}{L}}}  \\  v=\sqrt{\frac{TL}{m}}

Solving the above equation,

v^2=\frac{TL}{m} \\  L=\frac{v^2m}{T}

The frequency of the wave f=300 and wave length is 0.76

The velocity is v=(300)(0.76)=228

Substituting numerical values,

L=\frac{228^2(0.0059)}{200}\\ T=1.534

The length of the string is 1.534 m

4 0
3 years ago
What is the velocity of a 750 kg object at a height of 0m if it’s ME is 3590J?
Cloud [144]

Answer:

Sorry for this question

7 0
3 years ago
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