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3 years ago

How are mass and weight different

Physics

2 answers:

Agata [3.3K]3 years ago

8 0

Answer:

mass is something that takes up space and weight is how much mass something has

Lana71 [14]3 years ago

4 0

Your mass will stay the same no matter what place while your weight can vary depending on the circumstances. For instance, in space you have no weight but you still have a mass. The weight is basically the force of gravity that is pushed upon you.

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Vector A has a magnitude of 16 m and makes an angle of 44° with the positive x axis. Vector B also has a magnitude of 13 m and i

marshall27 [118]

Answer with explanation:

The given vectors in are reduced to their componednt form as shown

For vector A it can be written as

$\overrightarrow{v}_{a}=16cos(44^{o})\widehat{i}+16sin(44^{o})\widehat{j}$

Similarly vector B can be written as

$\overrightarrow{v}_{b}=-13\widehat{i}$

Hence The sum and difference is calculated as

$\overrightarrow{v}_{a}+\overrightarrow{v}_{b}=16cos(44^{o})\widehat{i}+16sin(44^{o})\widehat{j}+(-13\widehat{i})\\\\\overrightarrow{v}_{a}+\overrightarrow{v}_{b}=(16cos(44^{o})-13)\widehat{i}+16sin(44^{o})\widehat{j}\\\\\therefore \overrightarrow{v}_{a}+\overrightarrow{v}_{b}=-1.49\widehat{i}+11.11\widehat{j}\\\\\therefore |\overrightarrow{v}_{a}+\overrightarrow{v}_{b}|=\sqrt{(-1.49)^{2}+11.11^{2}}=11.21m$

The direction is given by

$\theta =tan^{-1}\frac{r_{y}}{r_{x}}\\\\\theta =tan^{-1}\frac{11.11}{-1.49}=97.64^{o}$ with positive x axis.

Similarly

$\overrightarrow{v}_{a}-\overrightarrow{v}_{b}=16cos(44^{o})\widehat{i}+16sin(44^{o})\widehat{j}-(-13\widehat{i})\\\\\overrightarrow{v}_{a}-\overrightarrow{v}_{b}=(16cos(44^{o})+13)\widehat{i}+16sin(44^{o})\widehat{j}\\\\\therefore \overrightarrow{v}_{a}-\overrightarrow{v}_{b}=24.51\widehat{i}+11.11\widehat{j}\\\\\therefore |\overrightarrow{v}_{a}-\overrightarrow{v}_{b}|=\sqrt{(24.51)^{2}+11.11^{2}}=26.91m$

The direction is given by

$\theta =tan^{-1}\frac{r_{y}}{r_{x}}\\\\\theta =tan^{-1}\frac{11.11}{24.51}=24.38^{o}$ with positive x axis.

3 0

3 years ago

What is a compound formed in protein metabolism and present in much living tissue?

Mamont248 [21]

Answer:

Creatine

It is the compound, formed in protein metabolism and present in much living tissue. It is involved in the supply of energy for muscular contraction.

Creatine improves the strength and increase the lean muscle mass to help the muscles recover more quickly during exercise.

Creatine helps muscle cells to produce more energy. In high intensity exercise, its primary role is to increase the phosphocreatine stores in the muscles.

Creatine is also nitrogenous organic acid that helps in supply of energy in the body. It occurs naturally in meat and fish. It is made by the body. It also obtained by the supplements.

5 0

3 years ago

What happens to Earth’s axis of rotation as Earth orbits the Sun?

Dominik [7]

Stays lined up with North Star

7 0

4 years ago

Which statement is true about acceleration?

Ilia_Sergeevich [38]

The answer is C is think

8 0

3 years ago

Why is 30% recommended as the minimum Michelson contrast?

forsale [732]

Answer:

Explained

Explanation:

Michelson contrast is used for patterns where the distribution of bright and dark segments is nearly equal.

It is given by:

$m= \frac{I_{max}-I{min}}{I_{max}+I{min} }$

where I_max = maximum illumination and I_min = minimum illumination

we know that

typically, I_min = 54% of I_max (general standard)

or I_min = 0.54 I_max

putting this value in above equation to get m

this approximately corresponds to m = 0.3 or 30%

hence, 30% recommended as the minimum Michelson contrast

6 0

3 years ago