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djyliett [7]
2 years ago
11

Can you explain the three main important reason why we use machine​

Physics
2 answers:
Maru [420]2 years ago
8 0

Answer:

HERE IS YOUR ANSWER

Explanation:

1. The machines makes pur life easier.

2. It makes us do our works faster.

3. It does all the works that are harder for us.

Hope it helps you.

balandron [24]2 years ago
7 0

Explanation:  

First of all some do most of the work for us

Second, us humans are quite lazy

Third, it makes it quite easier in life

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Describe responding Variable
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Answer:

A responding variable is something that “responds” to changes you make in an experiment. It's the effect or outcome in an experiment. ... The variable you change would be the amount of light. The responding variable would be the height of the plants.

hope it will help you

4 0
3 years ago
Compared to oceanic crust, continental crust is generally
Andru [333]
<span>Continental crust is less dense than oceanic crust </span>
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2 years ago
A diffraction grating with 161 slits per centimeter is used to measure the wavelengths emitted by hydrogen gas. At what angles i
Tresset [83]

Answer:

\theta_1  = 0.400^o

\theta_2   =0.378^o

Explanation:

From the question we are told that

    The  number of slits per cm is  k =  161\  slits\  per\  cm =  161 \  slits\  per\  0.01 m

    The order of the maxima is  n =  1

    The wavelength are  \lambda_1 = 434 nm  =  434 *10^{-9} \ m \ \ \ , \lambda_2 = 410nm =  410 *10^{-9} \  m

The  spacing between the slit is mathematically represented as

           d =  \frac{ 0.01}{k}

=>       d =  \frac{ 0.01}{161}

=>         d = 6.211 *10^{-5} \ m

Generally the condition for constructive interference is  

        n\lambda  =  d \ sin \theta

At  \lambda_1

      \theta _1  =  sin^{-1} [ \frac{1  *  434 *10^{-9}}{6.211 *10^{-5}} ]

      \theta_1  = 0.400^o

At  \lambda_2

       \theta _2  =  sin^{-1} [ \frac{1  *  410 *10^{-9}}{6.211 *10^{-5}} ]

       \theta_2   =0.378^o

4 0
3 years ago
When asked how to create an electromagnet, the best answer would be, "You can create an electromagnet by
Norma-Jean [14]
Choice-D will do the job nicely.
4 0
3 years ago
Read 2 more answers
A quarterback claims that he can throw the football a horizontal distance of 167 m. Furthermore, he claims that he can do this b
pychu [463]

Answer:u=42.29 m/s

Explanation:

Given

Horizontal distance=167 m

launch angle=33.1^{\circ}

Let u be the initial speed of ball

Range=\frac{u^2\sin 2\theta }{g}

167=\frac{u^2\sin (66.2)}{9.8}

u^2=1788.71

u=\sqrt{1788.71}

u=42.29 m/s

7 0
2 years ago
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