a body that has a mass of 0.04 k g is thrown up with a speed of 60m/s. Kinetic energy? a) in the begining,b)after 6 seconds

Answers

Answer 1

Answer:

Answer:

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The heating of the lower layer of the atmosphere from radiation absorbed by certain heat- absorbing gasses is called ?
A car leaves the pit after a refueling stop and accelerates uniformly to a speed of 62.2 m/s in 5.0 s to rejoin the race. What is the car's acceleration during this time?
A person of 45 kg can accelerate at 1.5 m/s² on a straight road. What is the force created? a) 46.5 N b) 67.5 N c) 30 N d) 0.033 N
Which of these was Sir Isaac Newton not known for? invention of calculus invention of the microscope the Three Laws of Motion universal gravitation theory
This man proposed that all matter was composed of atoms

Extremely high temperatures and pressures are necessary for fusion reactions to take place in stars. TRUE or FALSE.

Answers

The answer is true as a result of the fusion hydrogen atoms are converted into helium and energy is released in stars to produce fusion reaction.

I think the answer is True

Which Of The Following Statements Are True?A) The north pole of a bar magnet will attract the south pole of another bar magnet.
B) Earth's geographic north pole is actually a magnetic south pole.
C) Earth's geographic south pole is also a magnetic south pole.
D) The north poles of two bar magnets will attract each other. Scientists have evidence that single isolated magnetic poles, called magnetic monopoles, exist.
E) The south poles of two bar magnets will repel each other.

Answers

Answer:

A) The north pole of a bar magnet will attract the south pole of another bar magnet.

B) Earth's geographic north pole is actually a magnetic south pole.

E) The south poles of two bar magnets will repel each other.

Explanation:

According to classical physics, a magnetic field always has two associated magnetic poles (north and south), the same happens with magnets. This means that if we break a magnet in half, we will have two magnets, where each new magnet will have a new south pole, and a new north pole.

This is because for classical physics, naturally, magnetic monopoles can not exist.

In this context, Earth is similar to a magnetic bar with a north pole and a south pole. This means, the axis that crosses the Earth from pole to pole is like a big magnet.

Now, by convention, on all magnets the north pole is where the magnetic lines of force leave the magnet and the south pole is where the magnetic lines of force enter the magnet.

Then, for the case of the Earth, the north pole of the magnet is located towards the geographic south pole and the south pole of the magnet is near the geographic north pole.

And it is for this reason, moreover, that the magnetic field lines enter the Earth through its magnetic south pole (which is the geographic north pole).

Answer:ITS what that man said

Explanation:

ingrid kicks a football with an initial velocity of 12 m/s at an angle 45 relative to the ground. what is the horizontal component of the initial velocity to the nearest tenth

Answers

Let's assume that the coordinate system is defined as positive in the first quadrant.

The system has its origin in the place where Ingrid kicks the football ball.

We have then that the horizontal component is given by:

Rewriting we have:

Rounding the obtained result we have:

$x = 8.5 (m)/(s)$

Answer:

The horizontal component of the initial velocity to the nearest tenth is:

$x = 8.5 (m)/(s)$

is correct answer => 8.5 m/s

Part 1. A girl leaves a history classroom and walks 10 meters north to a drinking fountain. Then she turns and walks 30 meters south to an art classroom. What is the girl's total distance traveled? Part 2. Using the information above from Part 1. What is the girl's total displacement from the history classroom to the art classroom?

Answers

The total distance traveled by the girl will be 40 meters and the displacement will be 30 meters.

What will be the distance and displacement of the girl?

Distance = total amount of path followed by any body called distance.

Displacement= The minimum distance between two points irrespective to the path followed by the body is displacement.

It is given that

Distance traveled to north direction = 10 metres

Distance traveled to south direction= 30 metres

So the path followed by the girl in total = North direction + south direction

= 10+30

= 40 meters

And the displacement = min distance between History class and fountain

= 30 meters

total distance traveled by the girl will be 40 meters and the displacement will be 30 meters.

To learn more about Distance and Displacement follow

brainly.com/question/127432

She walks/travels 40 meters. Her displacement is 20 metres because she walked 10m, back those same 10m and the 20m to the art classroom.

What is personification?A. human traits attributed to objects
B. vivid language that paints a picture
C. a direct comparison between two things
D. an extreme exaggeration or overstatement

Answers

the answer is A because B is not right. C is incorrect and D well that doesn't makes since in it. the definition is the attribution of human nature or character inanimate, animals, object or abstract notation, especially as a rhetorical figure.

A. Think of it as person-ification. Such as "The flame of the candle DANCED in the dark" Now I don't know about you, but I've never seen a candle or a flame dance before!

You throw a rock out of a 7th story window. you time that it takes 3.7 seconds to hit the ground, and measure that it hit the ground 115 m from the base of the building? How fast must you have thrown the rock?
How high up must the 7th floor be?
If you had thrown it at the same speed but at the 28th floor, how far from the base of the building would it land?

Answers

1) 31.1 m/s

The rock has been thrown straight out of the window: its motion on the horizontal direction is simply a uniform motion, with constant speed $v$ , because no forces act in the horizontal direction. The speed in a uniform motion is given by

$v=(S)/(t)$

where S is the distance traveled and t the time taken.

In this case, the distance by the rock before hitting the ground is $S=115 m$ and the time taken is $t=3.7 s$ , so the initial speed is given by

$v=(115 m)/(3.7 s)=31.1 m/s$

2) 67.1 m

In this part of the problem we are only interested in the vertical motion of the rock. The vertical motion is a uniformly accelerated motion, with constant acceleration $a=9.8 m/s^2$ (acceleration of gravity) towards the ground. In a uniformly accelerated motion, the distance traveled by the object is given by

$S=(1)/(2)at^2$

where t is the time. Substituting a=9.8 m/s^2 and t=3.7 s, we can find S, the vertical distance covered by the rock, which corresponds to the height of the 7th floor:

$S=(1)/(2)(9.8 m/s^2)(3.7 s)^2=67.1 m$

3) 230.1 m

The height of the 7th floor is 67.1 m. So we can assume that the height of each floor is

$h=(67.1 m)/(7)=9.6 m$

And so, the height of the 28th floor is

$h=28\cdot 9.6 m=268.8 m$

We can find the total time of the fall in this case by using the same formula of the previous part:

$S=(1)/(2)at^2$

In this case, S=268.8 m, so we can re-arrange the formula to find t

$t=\sqrt{(2S)/(g)}=\sqrt{(2(268.8 m))/(9.8 m/s^2)}=7.4 s$

And now we can consider the motion of the rock on the horizontal direction: we know that the rock travels at a constant speed of v=31.1 m/s, so the distance traveled is

$S=vt=(31.1 m/s)(7.4 s)=230.1 m$