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vagabundo [1.1K]
3 years ago
15

Define relative velocity with an example. A man is going

Physics
1 answer:
makkiz [27]3 years ago
6 0

Answer:

4.24m/s,45 degrees in forward direction

Explanation:

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A diverging lens with a focal length of 14 cm is placed 12 cm to the right of a converging lens with a focal length of 21 cm. An
IRINA_888 [86]

Answer:

-0.233 m left of diverging lens and ( 0.12 - 0.233 ) = -113 m left of conversing

and

0.023 m  right of diverging lens

Explanation:

given data

focal length f2 = 14 cm = -0.14 m

Separation s = 12 cm = 0.12 m

focal length f1 = 21 cm = 0.21 m

distance u1 = 38 cm

to find out

final image be located and Where will the image

solution

we find find  image location i.e v2

so by lens formula v1 is

1/f = 1/u + 1/v     ...............1

v1 = 1/(1/f1 - 1/u1)

v1 = 1/( 1/0.21 - 1/0.38)

v1 = 0.47 m

and

u2 = s - v1

u2 = 0.12 - 0.47

u2 = -0.35

so from equation 1

v2 = 1/(1/f2 - 1/u2)

v2 = 1/(-1/0.14 + 1/0.35)

v2 = -0.233 m

so -0.233 m left of diverging lens and ( 0.12 - 0.233 ) = -113 m left of conversing

and

for Separation s = 45 cm = 0.45 m

v1 = 1/(1/f1 - 1/u1)

v1 =0.47 m

and

u2 = s - v1

u2 = 0.45 - 0.47 =- 0.02 m

so

v2 = 1/(1/f2 - 1/u2)

v2 = 1/(-1/0.14 + 1/0.02)

v2 = 0.023

so here 0.023 m  right of diverging lens

6 0
3 years ago
_____ are composed of ionized gas trapped in a magnetic arch rising above the surface of the Sun. When seen along the edge of th
ivanzaharov [21]

Answer:

Prominences

Explanation:

Their arched shapes show that they are formed of ionized gas trapped in the magnetic field. You see prominences in filtergrams as dark filaments silhouetted against the bright chromosphere.

7 0
3 years ago
Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different direc
larisa [96]
For the answer to the question above,
Ricardo goes a distance (magnitude) of 27, in a direction of 60 degrees W of N 
<span>Jane goes a magnitude of 16 in a direction 30 degrees S of W </span>

<span>How I would solve this is to imagine that the started at (0,0) </span>
<span>And their walking represents vectors. </span>

<span>Ricardo: </span>
<span>X-coordinate = -27sin60 = 27sqrt(3)/2 = 23.383 </span>
<span>Y-coordinate = 27cos60 = 27/2 = 13.5 </span>
<span>So, after he walks, he is at point (-23.383, 13.5) </span>

<span>Jane: </span>
<span>X-coordinate = -16cos(30) = 16sqrt(3)/2 = 13.856 </span>
<span>Y-coordinate = -16sin(30) = 16/2 = 8 </span>
<span>So, after she walks, she is at point (-13.856, -8) </span>

<span>So, you have 2 points. </span>
<span>Use the distance formula to find their distance apart </span>
<span>Sqrt((-23.383+13.856)^2+(13.5+8)^2) = 23.516m </span>

<span>To find the direction, simply find the slope of the two points, and take the arc-tangent. </span>
<span>The slope = -9.527/21.5 = -0.443 </span>
<span>Take the tan^-1 of this, which is -23.899 degrees. </span>
<span>This basically translates to, Ricardo must walk 23.899 degrees E of S </span>

<span>They will be 23.518 m apart </span>
<span>Ricardo must walk 23.899 degrees East of South to get to Jane</span>
5 0
3 years ago
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The greenish wormitism
8 0
4 years ago
What is the chemical formula, how many Total atoms are present, and how many Different atoms are present? (Ex C6H12O6
lara31 [8.8K]

The chemical formula is C6H12O6 .

This is one molecule of Glucose ... the simple sugar that plants and algae make with photosynthesis, and the 'blood sugar' in human beings like you and me.

The formula tells us that each molecule is made of 6 Carbon atoms, 12 Hydrogen atoms, and 6 Oxygen atoms.

3 different elements (different kinds of atoms)

24 total atoms ... in every molecule

8 0
3 years ago
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