PHYSICS HIGH SCHOOL

Is paper a good water absorbent ?

Answers

Answer 1
Answer: paper is not a good water absorbant.

Related Questions

What is the difference between alternating current and direct current?A. Alternating current regularly reverses direction. Direct current flows in only one direction. B. Alternating current flows in only one direction. Direct current regularly reverses direction. C. Direct current requires insulators, but alternating current does not. D. Alternating current requires insulators, but direct current does not.
Give the number of valence electrons for O. A) 0 B) 1 C) 2 D) 3 E) 4
Nicholas spends 20 minutes ironing shirts with his 1,800-watt iron. How many joules of energy were usedby the iron?
Can someone help please ​
Evidence gathered from publicly observable behavior is known as  _________ evidence.

Which behavior of light makes it possible for you to see a spectrum of colors in a spray of water on a sunny day? diffusion

Answers

The behavior of light makes it possible for you to see a spectrum of colors in a spray of water on a sunny day is refraction. The refractive index of a medium is dependent on the wavelength and hence light of different wavelength undergo refraction by different angle which causes the splitting of light beam in different color.

The answer is refraction?

In a video game, a flying coconut moves at a constant velocity of 20 meters/second in the positive direction. The coconut hits an obstacle and moves in the opposite direction with a constant velocity of 10 meters/second. What’s the change in velocity of the coconut?

Answers

Answer:

30 negative  is the change in velocty

Explanation:

Answer:-30 m/s

Explanation:

What is a caliper used for?

Answers

If you want to measure the distance between two points then you need a caliper. It will give you the precise measurement so it will be easier.

A bus slams on its breaks and goes from 30 km/hr to 15km/hr in 4 seconds. What is its acceleration?

Answers


Acceleration = (change in speed) / (time for the change).

Change in speed = (15 - 30) = -15 km/hr
Time for the change = 4 sec

Acceleration = (-15 km/hr) / (4 sec) = -3.75 km/hr per second .

Is that a lot ?  Not much ?

Let's convert it to a unit that we can think about:

     (-15 km/hr) x (1,000 m/km) x (1 hr / 3,600 sec) =

           (-15 x 1,000) / (3,600)  =  -(4 and 1/6) m/sec .

So the acceleration of the bus is    -(4 and 1/6) m/sec² .

The negative sign means that it slowed down.

(4 and 1/6) m/sec²  is about  42%  of the acceleration of gravity ...
the acceleration the bus would have if it drove off of a cliff.

When the car or the bus you're riding in slows down at that rate,
you feel  42%  of your weight pulling you forward against your
seat belt.  That's quite a drastic acceleration !

A 6kg object has 350j of kinetic energy. find the velocity of the object?

Answers


We have no information describing the direction in which
the object is moving, so we're in no position to discuss its
velocity.   ==> We have only speed to work with.

                                      Kinetic energy = (1/2) (mass) (speed²)

                                                   (350 J) = (1/2) (6 kg) (speed²)

Divide each side by  3 kg :    (350J / 3 kg)  =  (speed²)

Take the square root of each side:       Speed  =  10.8 m/s  (rounded)


Units (for the curious/inquisitive):

[Energy] = [work] =        [force] x                [distance]

                             = [mass-distance/time²] x [distance]

                             =  [ kg-meter / sec² ]  x  [ meter ]

                             =  [ kg-meter² / sec² ]  =  Joule

Energy / mass  =  Joule/kg  =  [ meter² / sec² ]  =  (speed²)

   

Which particle builds a static electric charge when it is transferred from one object to another? A.proton

B.atom

C.electron

D.molecule

Answers

c, because of its electrical charge
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