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Verizon [17]
3 years ago
15

How much work is done in holding a 10 newton sack of potatoes while waiting in line at the grocery store for 3 minutes.​

Physics
1 answer:
hodyreva [135]3 years ago
4 0

Answer:

Zero

Explanation:

W = F × s

F = 10 N,

t = 3min = 180sec

s = 0( no change in postion)

W = 10 ×0

W = 0

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A vector is given by R 2i + j+3k. Find (a) magnitudes of the x, y, and z components; (b) the ma nitude of R; and (c) the angles
Darya [45]

Answer:

given,

R = 2i + j+3k

a) magnitude in x = 2

                          y = 1

                          z = 3

b) magnitude of R

R = \sqrt{2^2+1^2+3^2}

R = 3.74 units

c) angle between the R and  the x, y, and z axes.

cos \theta_x=\dfrac{2}{3.74}

θ x = 57.72°

cos \theta_y=\dfrac{1}{3.74}

θ y = 74.51°

cos \theta_z=\dfrac{3}{3.74}

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3 years ago
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Answer:

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8 0
3 years ago
Thoughts about Genetically Modified Crops
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I think that GMOs, also known as genetically modified crops or organisms, can be used in good and bad ways. They can provide crops to survive longer, and produce a bigger portion. However, on the other side of that, it is claimed that it creates a large amount of greenhouse gas emissions, which can turn into climate change.
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3 years ago
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Light from a laser (lambda= 406.192 nm) is used to illuminate two narrow slits. The interference pattern is observed on a screen
dsp73

Answer:

The spacing between the slits is    d = 0.00145m                

Explanation:

From the question we are told that

  The wavelength of the light is \lambda = 406.192nm = 406.192*10^{-9} m

   The distance of the slit from the screen is D = 5.937 \ m

    The number of bright fringe is n = 24

     The  length the fringes span is   L = 39.835 mm = \frac{39.835 }{1000} = 0.0398 m

The fringe width (i.e the distance of between two successive bright or dark fringe) is mathematically represented as

             \beta  = \frac{\lambda D}{d}

Where d is  the distance between the  slits

            \beta is the fringe width which can also be evaluated as

                         \beta = \frac{L}{n}

Substituting values

                        \beta = \frac{0.0398}{24}

                          \beta = 1.660 *10^{-3}

Making d the subject of formula in the above equation

                d = \frac{\lambda D}{\beta }

Substituting values

                d = \frac{406.192 *10^{-9} * 5.937 }{1.660 *10^{-3}}

                    d = 0.00145m                

           

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4 years ago
Which<br> factors will increase the speed of a sound wave in the air?
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