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3 years ago

Drag the tiles to the correct boxes to complete the pairs.

Physics

2 answers:

frez [133]3 years ago

8 0

i matched the answers from question to answer in this order. 1,2. 2,3. 3,6. 4,1. 5,5. 6,4.

Fudgin [204]3 years ago

7 0

Answer:

The correct answer is option-

Make an observation---> an indoor plant in a dark room withers faster than the same plant in a room with ample sunlight.
Ask a question----> Why do certain indoor plants die faster based on where they’re placed in the house?
State a hypothesis----> sunlight is probably essential for plants to grow and live.
Run an experiment---> get two potted plants, cover one with black paper. Place both plants outside in sunlight and see what happens to each plant after one week.
Analyze the results ---> the plant in the pot with black paper withered while the other plant was healthy.
Communicate the results to others---> Plants need sunlight to make food so they can live.

Explanation:

These statements are related to a process called photosynthesis.

Hypothesis is a well-substantiated opinion which explains any natural phenomenon occurring in nature.

A scientific question is a statement which can have real answers which can be tested based on the experiments performed.

Experiments are methodical procedures used to support the hypothesis.

Based on this the selected options are correct.

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When the area over which pressure is applied is increased,

Tema [17]

Answer:

A. the pressure decrease

Explanation:

pressure decreases when the surface area over which a force is applied increases. pressure increases when the surface area over which force is applied decreases.

3 0

3 years ago

PLEASE HELP Due in a few minutes!!!!! Have not finished yet :

Zigmanuir [339]

The North Star, or Polaris, is the brightest star in the constellation Ursa Minor, the little bear (also known as the Little Dipper). As viewed by observers in the Northern Hemisphere, Polaris occupies a special place

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3 years ago

Calculate the root mean square velocity of nitrogen molecules at 25 C.

iragen [17]

root mean square= square root of ( 3RT/M)

R = 8.314 J/K/mole
T = 25 + 273 = 298 K
M = molecular mas of N2 in kg = 28 X 10^-3 kg

put values...

 root mean square = square root of ( 3 X 8.314 X 298/28 X 10^-3)
= square root of ( 265454.143)
= 515.2 m/s
so option A is right
hope this helps

4 0

3 years ago

If you pull horizontally on a desk with a force of 150 N and the desk doesn't move, the friction force must be 150 N. Now if you

s344n2d4d5 [400]

Answer:

The friction force is 250 N

Explanation:

The desk is moving at constant velocity. This means that its acceleration is zero: a = 0. Newton's second law states that the resultant of the forces acting on the desk is equal to the product between mass (m) and acceleration (a):

$\sum F=ma$

In this case, we know that the acceleration is zero: a = 0, so also the resultant of the forces must be zero:

$\sum F = 0$ (1)

We are only interested in the forces acting along the horizontal direction, since it is the direction of motion. There are two forces acting in this direction:

- the pull, forward, F = 250 N

- the friction force, backward, $F_f$

Given (1), we have

$F-F_f = 0$

So the force of friction must be equal to the pull:

$F=F_f = 250 N$

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3 years ago

Jane and John Doppler effect

UkoKoshka [18]

Answer:

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3 years ago