PHYSICS HIGH SCHOOL

Questions3 pts
Convert 6.36 x 104 from scientific notation to standard decimal with the correct number of significant digits.

Answers

Answer 1
Answer:

Answer:

Explanation:

standard decimal form  of 6.36*10^4 is

6,3600.0

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A dryer runs on 240 V with a resistance of 30.0 Ω. What is the current of the dryer?
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Asteroids are larger than

Answers

Asteroids are larger than comets, you, me, and meteoroids.
asteroids are larger than a house, a molecule, a car, a fish, an Iphone, and etc...

A bowling ball with a mass of 4.5 kg travels at a velocity of 37 m/s for 2.5 s until it is stopped at the end of the lane by the ball return. What additional information is required to determine the weight of the bowling ball?a. the speed at which the ball return captured the ball
b. the amount of friction from the bowling lane acting on the bowling ball
c. the acceleration due to gravity acting on the bowling ball
d. the force the bowler applied to the bowling ball

Answers


No additional information is required.  We can calculate,
or simply write down, each of those answers now.

A).  The weight of the ball:

    Weight = (mass) x (gravity) = (4.5 kg) x (9.8 m/s²) = 44.1 newtons

B).  Friction acting on the ball:

       You said that the ball travels with speed of 37 m/s for
       2.5 seconds.  Since the speed of the ball is constant,
       there can't be any friction acting on it.  If there were any,
       then it would lose kinetic energy, and its speed would be
       decreasing.

C).  The acceleration due to gravity is 9.8 m/s² ... IF this story is
        taking place on Earth.

D).  Welll, you caught me.  I can't answer this one without
more information.

The bowler applied force to the ball, and accelerated it from
no speed up to 37 m/s.  In order to figure out the acceleration,
I would need to know how long he spent doing it. 

But wait !  You know what ?  Now that I think of it, we would need
a WHOLE LOT of additional information to answer this part, and
we probably still could not answer it. 

The ball didn't get its entire speed of 37 m/s from the bowler pushing
on it.  We don't put bowling balls down on the floor and accelerate
them with constant force.  We swing them up behind us, and let
gravity accelerate them as they swing down like a pendulum. 
So a lot of the force that accelerates the ball comes from gravity,
the rest comes from the bowler, and the amount is different for
every bowler.

So I'm going to say that d). can't be answered at all, period.

And by the way ... one more comment:

37 m/s is just about 83 miles per hour !  I'm not sure the ball return
is going to stop that thing, and I'd want to get out of the way if I were
you or one of the pins !

Determine the volume at the equivalence point if a 0.100 M NaOH(aq) solution is used to titrate the following acidic solutions: (a) 50.0 mL of 0.200 M HBr(aq) (b) 30.0 mL of 0.150 M HNO3(aq)

Answers

Answer:

a) NaOH volume at the equivalence point is 100 ml.

b) NaOH volume at the equivalence point is 45 ml.

Explanation:

To calculate the concentration of acid, we use the equation given y neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid.

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base

a) If a 0.100 M NaOH (aq) solution is used to titrated with 50.0 mL of 0.200 M HBr(aq).

We are given:

n_1=1\nM_1=0.200M\nV_1=50.0mL\nn_2=1\nM_2=0.100M\nV_2=?mL

Putting values in above equation, we get:

1* 0.200M* 50.0 mL=1* 0.100 M* V_2\n\nV_2=100 mL

b) If a 0.100 M NaOH (aq) solution is used to titrated with 30.0 mL of 0.150 M HNO_3(aq).

We are given:

n_1=1\nM_1=0.150M\nV_1=30.0mL\nn_2=1\nM_2=0.100M\nV_2=?mL

Putting values in above equation, we get:

1* 0.150M* 30.0 mL=1* 0.100 M* V_2\n\nV_2=45 mL

When the mass of an object increases, the force of gravityincreases.

decreases.

remains the same.

becomes irregular.

Answers

According to the second law of motion, force is equal to the product of mass and acceleration. This means force is proportional to mass. Hence when mass increases, it is understood that force should increase as well. In this case,the answer to this problem is A. 
Increases. The more mass an object has, the more gravity it has

According to modern atomic theory, it is nearly impossible to determine an electron’s exacta. color.
c. charge
b. position.
d. mass.

Answers

It is impossible to determine the exact position and momentum of electron simultaneously. Therefore, option B is the correct answer.

According to Heisenberg’s uncertainty principle,it is impossible to determine simultaneously, the exact position and momentum of an electron.

Mathematical expression  

ΔX.ΔP ≥ h/4π

ΔX = uncertainty in position

ΔP = uncertainty in momentum

h = Plank’s constant  

π= Pi  

Thus, we can conclude its nearly impossible to determine electron’s exact position. Therefore, option B is the correct answer.

Learn more about uncertainty principle here:

https://brainly.in/question/10474600

The correct answer that is actually listed would be (B) I know this because I did it on my test and the other answer on this was not helpful at all.

What is the total displacement of a bee that flies 2 meters east, 5 meters north, and 3 meters east?

Answers


I think, not positive, but I think its 30
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