Which state of matter has the greatest amount of kinetic energy?

Answers

Answer 1
Answer:

Answer:

A pure substance in the gaseous state contains more energy than in the liquid state, which in turn contains more energy than in the solid state. Particles has the highest kinetic energy when they are in the gaseous state.

Explanation:

Sana makatulong.


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Scientists have observed that the average sunspots have increased in the last 50 years. Which of these statements best describes an effect of this increase in sunspots? A) Earth's temperature has become cooler.
B) Earth's temperature has not changed over time.
C) Earth's temperature has become warmer.
D) Earth's temperature has reduced by fifty times.

Answers

Answer:

Earth's temperature has become cooler

Explanation:

The number of sunspots, as you have learned, can indicate whether the sun is in a maximum-activity period or a minimum-activity period. Some scientists believe this can have an overall effect on the climate of Earth.

The right answer for the question that is being asked and shown above is that: "B) Earth's temperature has not changed over time." Scientists have observed that the average sunspots have increased in the last 50 years. The statement that best describes an effect of this increase in sunspots Earth's temperature has not changed over time. 

At room temperature and pressure, alcohol is in which state of matter? solid, liquid, gas, or plasma **not sure!

Answers

i think it's liquid because alcohol are liquid.

Well, plasma, I'm not sure what that does so I won't touch that, it would have to be frozen to be a solid, and there are two types of alcohol, the drinking kind and rubbing alcohol, which are both liquids, so it would be in a liquid state no matter how much pressure you put on it

When Jane drives to work, she always places her purse on the passenger’s seat. By the time she gets to work, her purse has fallen on the floor in front of the passenger seat. One day, she asks you to explain why this happens in terms of physics. What do you say?

Answers

Explanation: There may be different explanations:

Suppose that Jane's car has a built some sped, and she sees a stoplight. Now she needs to stop the car (decelerating the car)

When she does this, she creates a force that holds the car until it is full stop, but this force is applied only on the car, the purse that is on the passenger seat only feels this force by the friction that the seat does in his surface, but the purse has built some moment because it was inside the car, and the friction force that the seat does may not be enough to also stop the purse. So when Jane stops, the purse keeps moving forward, and then it falls down of the seat.

At some time during her drive she backed up with a substantial negative. ( backwards) acceleration. Since the pocket book is not physically connected to the seat it is free to move. Upon rapid negative acceleration the pocket book remains in its position while the car accelerates backwards away from it. this demonstrates Newtons 1st law of motion. The first law is the law of inertia. Which states, an object at rest. ( pocketbook) will remain at rest and an object in motion will continue in motion at constant velocity, unless acted upon by some outside force to change its motion.

PLSSSS HELPPPP PLSSSS 25 POINTS PLS I REALLY NEED THIS AND GET THEM RIGHT SO PLS DONT ANSWER IF U DONT KNOW

Answers

Answer:

1- C   2-B    3-B   - these are ur best answers

Explanation:

Answer:

1. C(bone structure)

2. B (Common ancestor)

3.D (DNA)

Explanation:

A ball rolls horizontally off a table of height 0.6 m with a speed of 9 m/s .How long does it take the ball to reach the ground?

Answers

The distance an object falls from rest is

                     D  =  (1/2) (gravity) (time)² .

If the ball falls 0.9 meter, then

                               0.9 m  =  (1/2) (9.8 m/s²) (time)²

Divide each side
by 4.9 m/s² :           0.9 m / 4.9 m/s² = time²

Take the square root
of each side:                time = √(0.9/4.9) sec²

                                              =        0.43 second .

The horizontal motion of the ball makes no difference.
It doesn't matter whether the ball rolls off of a table,
gets dropped from a hand, or shot horizontally from
a gun. It still hits the floor or the ground 0.43 sec later. 

Answer:

.35 s

Explanation:

x = v(i)t + 1/2at^2

gravity = 9.81 m/s^2 = a

.6 m = 1/2at^2

(.6 m) * 2 = (1/2at^2)*2

1.2 m = at^2

(1.2 m)/a = (at^2)/a

0.12 s^2 = t^2

sqrt(.12 s^2) = sqrt(t^2)

.35 s = t

a car requires 1x10^8J of energy to drive 30km. calculate how many kilometers you could hypothetically drive using the energy contained in the rest mass of 100mg of fuel.

Answers

Ah hah !  I spy a question about  E = m c² .
OK, here we go.  Fossen your seat belt, mon,
it's going to be eh boompy rade !

E = energy equivalent of mass
m = the mass of the mass
c = the speed of light

              E  =  (m)  (c)²

                  = (100 mg) (3 x 10⁸ m/s)²

                 =  (1 x 10⁻⁴ kg) (9 x 10¹⁶ m²/s²)

                 =        9 x 10¹²  (kg-m²/s²)

                 =        9 x 10¹²  (kg-m/s²) (m)

                 =        9 x 10¹²  (newton) (m)

                 =        9 x 10¹²  joules .

The car can go 30 km on  10⁸ J of energy.

How far can it go on  9 x 10¹² J ?

                (9 x 10¹² J) x (30 km / 10⁸J)

             =  (9 x 10⁴) x (30 km)  =  2,700,000 km

             =          roughly    7.3 times the distance to the moon.