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kvasek [131]
3 years ago
8

The Earth moving round the Sun in a circular orbit is acted upon by a

Physics
1 answer:
zalisa [80]3 years ago
3 0
No I do not agree. It is because work is done when force acting o a body displace or covers certain displacement in the direction of force applied .
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A way of grouping organisms based on characteristics they share is
miv72 [106K]

it is called classification

hope this helps :)

8 0
4 years ago
What is the speed of a walking person in m/s if the person travels 1000 m in 20 minutes?
Nata [24]

Answer:

0.83m/s

Explanation:

Given parameters:

distance  = 1000m

time taken  = 20min

Unknown:

Speed of the walking person  = ?

Solution:

To solve this problem;

    Speed  = \frac{distance}{time taken}

  Time taken should be in seconds;

                 1 min   =  60s

                 20min  = 20 x 60  = 1200s

Speed  = \frac{1000}{1200}   = 0.83m/s

8 0
3 years ago
A thin-walled vessel of volume V contains N particles which slowly leak out of a small hole of area A. No particles enter the vo
LuckyWell [14K]

Answer:

    \frac{V}{2av}

Explanation:

From the question we are told that

Volume V

Contains N particles

Leaks from a small hole of area A

Generally the equation for Flow rate is given as

Volume Flow Rate  V_r = A * v

Mathematically we find the  time taken to flow half way which is given by

          \frac{(V/2)}{A*v}

Therefore the  time taken is

           \frac{V}{2av}

7 0
4 years ago
Which term is defined as the change in the direction of light when it goes from one medium into a different medium?
Vaselesa [24]
Refraction is the term  

8 0
3 years ago
A particle undergoes two displacements. The first has a magnitude of 11 m and makes an angle of 82 ◦ with the positive x axis. T
Luden [163]

Answer:

\theta = 211.7 degree

Explanation:

First displacement of the particle is given as

r_1 = 11 m at 82 degree with positive X axis

so we can say

\vec r_1 = 11 cos82 \hat i + 11 sin82 \hat j

\vec r_1 = 1.53\hat i + 10.9 \hat j

resultant displacement of the particle after second displacement is given as

r = 8.7 m at 135 degree with positive X axis

so we can say

r = 8.7 cos135\hat i + 8.7 sin135\hat j

r = -6.15 \hat i + 6.15 \hat j

now we know that

r = r_1 + r_2

now we have

r_2 = r - r_1

so we will have

r_2 = (-6.15 \hat i + 6.15 \hat j) - (1.53\hat i + 10.9 \hat j)

r_2 = -7.68 \hat i - 4.75 \hat j

so angle of the second displacement is given as

tan\theta = \frac{r_y}{r_x}

tan\theta = \frac{-4.75}{-7.68}

\theta = 211.7 degree

8 0
3 years ago
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