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Answer:

Explanation:

potential energy = mgh

kinetic energy = 1/2mv²

Explanation:

potential energy =360800J

mass(m)=?

height (h)=25m

g=9.8m/s²

we have

potential energy =360800J

mgh=360800J

m×9.8×25=360800

m=360800/(9.8×25)=1472.653061kg

Answer:

HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted!

Answer:

it grows fast, spreads faster and kills off smaller native plants

Explanation:

honeysuckle spreads very quickly and blooms multiple times a year, spreading seeds and growing in more spots. everytime it does so, it cuts off other smaller native plants from the sunshine and kills them off

Answer:

Yes. Space is somewhat voidless. Space has no atmosphere, just planets, stars, and dark matter. Space can be said to be special. Space never ends. Gravity would cause an object to fall down. However, since space never ends, an object could continue moving forever.

At an altitude 400 km (250 miles) above the Earth, gravity is nearly 90 % as strong as on the surface of the earth.

The gravity of Earth can be described as the net acceleration that is imparted to objects due to the combined effect of gravitation and centrifugal force. It can be defined as a vector quantity, whose direction coincides with a plumb bob and strength or magnitude.

In SI units gravitational acceleration is expressed in meters per second squared or equivalently in newtons per kilogram. Near Earth's surface, the gravity acceleration is approximately 9.81 m/s², ignoring the effects of air resistance.

The gravity of the earth decreases with altitude rises above the Earth's surface because of the greater distance from the Earth's center. At an altitude of 400 kilometers equivalent to an orbit of the ISS, gravity is nearly 90% as strong as at the Earth's surface.

Learn more about Gravity, here:

https://brainly.com/question/1479537

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Answer:

Explanation:

Answer:

Kinetic energy increase

Answer:

increases

Explanation:

Answer:

F(m)= mg(m)

m=F(m)/g(m)=72/1.6=45kg

F(e)= mg(e)= 45 x 10 m/s= 450N

Answer:

Photosynthesis occurs in the organelle, chloroplast .

Cellular respiration occurs in a plants or animals mitochondria.

Explanation:

Hope this helps! :)

Answer:

bones

Explanation:

Bones are is preserved in cast and mold fossils.

Normally the other 'parts of the body' like muscles, ligaments, blood and organs are soft.

Answer:

bones

Explanation:

Answer:

Element Symbol # of Atoms

Oxygen O 2

Sulfur S 1

Explanation:

Answer: The color is orange, the state of matter is liquid

Explanation:

Answer:

[tex]\vec{A} + \vec{B} = \vec{A} - \vec{B}[/tex] if and only if [tex]\vec{B}[/tex] is a zero vector.

Explanation:

An equation is true if and only if adding the same value to both sides of the equation (the value needs to be compatible) gives an equation that is also true.

Start with the [tex]\vec{A} + \vec{B} = \vec{A} - \vec{B}[/tex].

This equation is true if and only if [tex]\left(\vec{A} + \vec{B}\right) + \vec{B} = \left(\vec{A} - \vec{B}\right) + \vec{B}[/tex] ([tex]\vec{B}[/tex] is added to both sides of the original equation.)

Vector addition and subtraction are associative. Therefore, [tex]\left(\vec{A} + \vec{B}\right) + \vec{B} = \left(\vec{A} - \vec{B}\right) + \vec{B}[/tex] if and only if [tex]\vec{A} + \left(\vec{B} + \vec{B}\right) = \vec{A} + \left(- \vec{B} + \vec{B}\right)[/tex], which is equivalent to [tex]\vec{A} + 2\, \vec{B} = \vec{A}[/tex].

[tex]\vec{A} + 2\, \vec{B} = \vec{A}[/tex] if and only if [tex]\left(-\vec{A}\right) + \vec{A} + 2\, \vec{B} = \left(-\vec{A}\right) + \vec{A}[/tex] ([tex]\left(-\vec{A}\right)[/tex]is added to both sides of this equation,) which is equivalent to [tex]2\, \vec{B} = \vec{0}[/tex].

[tex]2\, \vec{B} = \vec{0}[/tex] if and only [tex]\displaystyle \frac{1}{2} \cdot \left(2\, \vec{B}\right) = \frac{1}{2} \cdot \vec{0}[/tex], which is equivalent to [tex]\vec{B} = \vec{0}[/tex]. That is: [tex]\vec{B}[/tex] is the zero vector.

In other words:

[tex]\begin{aligned}& \vec{A} + \vec{B} = \vec{A} - \vec{B}\\ &\iff \left( \vec{A} + \vec{B}\right) + \vec{B} = \left(\vec{A} - \vec{B}\right) + \vec{B} \\ &\iff \vec{A} + \left(\vec{B} + \vec{B}\right) = \vec{A} + \left(- \vec{B} + \vec{B}\right) \\ & \iff \vec{A} + 2\, \vec{B} = \vec{A} \\ & \iff \left(-\vec{A}\right) + \vec{A} + 2\, \vec{B} = \left(-\vec{A}\right) + \vec{A} \\ &\iff 2\, \vec{B} = \vec{0} \\ &\iff \frac{1}{2} \cdot 2\,\vec{B} = \frac{1}{2} \cdot \vec{0} \\ &\iff \vec{B} = \vec{0}\end{aligned}[/tex].

Hence, [tex]\vec{A} + \vec{B} = \vec{A} - \vec{B}[/tex] if and only if [tex]\vec{B}[/tex] is the zero vector.

air exert a pressure take a glass and put the water on it and small piece a paper and glass take downword and observe it so tha air exert pressure

Answer:

 W = 500 J

Explanation:

Work is defined by

         W = F . x

if we develop the dot product

         W = F x cos θ

where is the angle between the force and the displacement, in this case the angle is zero, so cos 0 = 1

          W = F x

indicate that each person applies a force of 500 N, so the total force is

         F = 1000 N

let's reduce the distance to the SI system

          x = 50 cm = 0.50 m

let's calculate

          W = 1000 0.50

          W = 500 J

Answer:

B Eight light-minutes

Explanation:

In the case when the distance separated earth and the sun so here we orbit the sun for a 150 million km distance and the light moves would be 300,000 kilometers per second

Now divide this

= 150 million ÷ 300,000 kilometers per second

= 500 seconds

This 500 seconds represent 8 minutes and 20 seconds

Hence, option B is correct

Answer:

B) Eight light-minutes

Answer:

The correct answer is -

1. 67500 J

Explanation:

The formula for KE is  

K.  E.  =  1/ 2 *m v ^2  

So input the values we know:

K . E.  =  1/2 ⋅*150  *30 ^2

K . E.  =  150 * 900 /2

K . E . =  67500  

K . E.  = 67500

If the velocity is double then;

use 2v in the formula

K.  E.  = ( 1/ 2 )*m(2 v) ^2

= (1/2)*4m v ^2

it is four times to original Kinetic energy, and similarly if tripled then, it will be 9 times to original.

Answer:

Average speed = 5 m/s

Explanation:

Given the following data;

Distance = 100m

Time = 20 secs

To find the average speed;

Speed = distance/time

Substituting into the formula, we have;

Speed = 100/20

Speed = 5m/s

Therefore, Elsa's average speed is 5 meters per seconds.

Answer:

A

Explanation:

Trial and error is basically trying something, if it works, great. If it does not work, try another way.

Answer:

A. Trial and error

Explanation:

The other user is correct.

Answer:

v = 24 m/s, rightwards

Explanation:

Given that,

The mass of TBT explosive = 5 kg

It explodes into two pieces.

One of the pieces weighing 2.0 kg flies off to  the left at 36 m/s. Let left be negative and right be positive.

The law of conservation of momentum holds here. Let v be the final speed of the remaining piece. So,

[tex]5\times 0=2\times (-36)+3\times v\\\\-72=-3v\\\\v=24\ m/s[/tex]

So, the final speed of the remaining piece is 24 m/s and it is in the right direction.

Answer: These ideas, that all men are created equal and that government is based on the consent of the governed, became the foundation for the US political ideal of popular sovereignty: that the government exists to serve the people, who elect representatives to express their will.

Explanation: Hope this helped! <3

Answer: b

Explanation:

p=mv

p=30

m=1500

rearrange to find v

(30)=(1500)(v)

v= 30/1500

v = 0.02 m/s

Answer:

The big rig.

Explanation:

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

[tex] Momentum = mass * velocity [/tex]

In this scenario, a motorcycle, a car, and a big rig are all moving with a velocity of 100 km/h. Thus, the vehicle which has the greatest momentum is the big rig because its mass is intuitively or logically greater than that of the other vehicle.

Generally, momentum is directly proportional to the mass of a physical object or body.

Answer: A large 18 wheeler truck.

Explanation: Momentum is the measure of the motion of an object found by multiplying the object’s mass and velocity. Momentum is directly proportional to the object's mass and also its velocity. So, the greater an object's mass or the greater its velocity, the greater its momentum. Therefore, since the truck is bigger, it has the greatest mass. This means that the truck the greatest momentum. Correct on Edg 2020.

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Answer:

In the language of science, a theory is an explanation of why and how things happen. For gravity, we use Einstein's Theory of General Relativity to explain why things fall. ...While laws rarely change, theories change frequently as new evidence is discoevered.