If we decrease the amount of force, and keep all other factors the same, what will happen to the amount of work? The amount of work will go down because the distance will decrease. The amount of work will go up because the distance will decrease. The amount of work will go down because the distance will increase. The amount of work will go up because the distance will increase.

Answer:

the answer from nod energy from atoms

Answer: 1.81m

Explanation:

Given the following:

Horizontal speed = 4m/s

Height of table = 1m

Taking the vertical component of the motion:

Using:

S = ut + 0.5 at^2

Where, S = height of table, a = acceleration due to gravity (9.8m/s^2), t = time and u = Initial Velocity in vertical direction = 0

1 = 0(t) + 0.5(9.8)t^2

1 = 4.9t^2

t^2 = 1 / 4.9

t^2 = 0.204081

t = sqrt(0.204081)

t = 0.452s

For Horizontal :

Gravitational acceleration is absent, therefore distance can be calculated using:

Distance = Velocity × time

Distance = 4m/s × 0.452s

Distance = 1.808 m

Distance = 1.81m

Answer:

020

Explanation:

Answer: Energy should be transferred to an object in order to move it. This amount of energy transferred by the force to move an object is called work or work done. Thus, the relation between Work and Energy is direct. That is, the difference in the Kinetic energy of an object is work done by an object. OR

The principle of work and kinetic energy (also known as the work-energy theorem) states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle. The kinetic energy of the block increases as a result by the amount of work.

Explanation:

Answer:

D

Explanation:

Answer:

It is D

Explanation:

Because kinetic energy ALSO depends on mass (weight) so it has to be moving and has to have weight in order to be called kinetic energy.

Answer:

this situation would not be physically possible

Answer:

mass=60kg

h=20m

g=10m/s²

here the work done by the body is equal to its potential energy

work done=P.E.

As we know that P.E.=mgh

putting values

P.E.=60kg×20m×10m/s²

P.E.=1200kgm×10m/s²

P.E.=12000Nm

so the work done by the body is 12000Nm

Answer: Centripetal

Explanation: The centripetal force refers to the acting on a body moving in a circular path. This force acts in the direction of the center of rotation. The centripetal force is given by :

F = mv^2 / r

Where m = mass of th body

v. = Velocity

r = radius of the circular path.

For an object to move in a circular path, the force required is called the centripetal force. It is measured in Kgms^-2. It is directly proportional to the product of the Mass and square of it Velocity and varies inversely to the Radius of its path.

Answer:

When the electric force between two charged objects change, the distance between the objects increases in Iicreasing the separation distance between objects and decreases the force of attraction or repulsion between objects.

Hope it helps.

Answer:

1. There would be two different tables, one arranged by mass and the second arranged by the chemical reactions the elements are known for

2. a. The difference is that the atomic mass is fixed and is 2 or more times the atomic number which is variable

b. The atomic number is the bases of the periodic table because it reflects the unique identity as well as the chemical and physical properties of the atoms more than the atomic number

3. The table formed by the atomic mass is not representative of the chemical properties of the elements

Explanation:

1. The elements would have been arranged by mass and by order of reaction such that there would be two tables where the first table will list all the known elements arranged by mass and the second table will group the elements in the order in which they can react or the kinds of compounds they can form such as oxides, nitrides etc

2. a. The atomic number, Z,  is determined by the definitive number of protons contained in the nucleus of an atom and it is used for the classification of an atom as a particular element based on the its equivalent atomic number

The atomic number defines the chemical behavior of an an element because it is equal to the number of electrons present in a neutral atom

The atomic mass or mass number, A, is the total of the mass of the protons and the neutrons present in an atom

The neutron is electrically neutral, allowing its quantity to vary without significantly impacting on the chemical behavior of the atom, hence two different elements can have the same number of neutrons

Therefore, the difference is that the atomic mass is fixed and is 2 or more times the atomic number which is variable

b. The atomic number is the bases of the periodic table because it reflects the unique identity as well as the chemical and physical properties of the atoms more than the atomic number

3. If the periodic table was arranged according to the atomic mass, we would have;

Groups

H

He      Li        B         C         O       F        Na      

Be      N       Ne        Mg      S        Ar      Sc

O        Si      Ca         Ti        Zn     Se      

It is seen that the above table is not representative of the chemical properties of the elements.

Answer:

When an object is in motion, there is energy associated with that object. Why should that be the case? Moving objects are capable of causing a change, or, put differently, of doing work. For example, think of a wrecking ball. Even a slow-moving wrecking ball can do a lot of damage to another object, such as an empty house. However, a wrecking ball that is not moving does not do any work

(hope it helps :p    )

Answer:

the driving gear must be larger than the driven gear

Explanation:

Answer:

The widely accepted theory for the origin and evolution of the universe is the Big Bang model, which states that the universe began as an incredibly hot, dense point roughly 13.7 billion years ago.

Answer:

Explanation: Work=force×distance

W=F×S  where W=10,000J,  F=m×g=225 kg×10 N/kg= 2250 N

⇒S=W/F

     = 10000/2250

     = 4.44 m

The box will be raised 4.53 m

Work done is defined as the product of component of the force in the direction of the displacement and the magnitude of  this displacement .

Work done = F .s = Fs cos (theta)

F = mg

s =h

theta = 0°

cos (theta) = cos 0 = 1

hence , work done = m*g*h

Potential energy is stored in the form of work done

potential energy = work done to raise the box = m*g*h

given

mass (m) = 225kg

work done(WD) = 10,000 J

height (h) = ?

potential energy = m*g*h

10,000 J= 225kg * 9.8m/s^2 * h

h = 4.53 m

The box will be raised 4.53 m

learn more about work done

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The second one is best.  Gravity is an attractive force that acts between all objects, whether they're in contact or not.

Gravity is an attractive force that acts between all objects, whether they're in contact or not.

Gravity, also called gravitation, in mechanics, is the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter.

On the other hand, through its long reach and universal action, it controls the trajectories of bodies in the solar system and elsewhere in the universe and the structures and evolution of stars, galaxies, and the whole cosmos.

On Earth, all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth’s surface, the acceleration of gravity is about 9.8 metres (32 feet) per second per second.

Thus, for every second an object is in free fall, its speed increases by about 9.8 metres per second. At the surface of the Moon, the acceleration of a freely falling body is about 1.6 metres per second per second.

Hence Gravity is an attractive force that acts between all objects, whether they're in contact or not.

To know more about Gravity follow

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Answer:

1Farahd

The equivalent capacitance in parallel 6F is now in series with

3F - 2F = 1F

Answer:

5 mph East.

Explanation:

If the girl is the frame of reference, we need to check the train's relative movement to the girl.

If the girl was not moving inside the train, the speed of the train would be zero, because the train and the girl would be moving together with the same speed and direction.

If the girl is moving 5 mph toward the back of the train, the movement of the train should be calculated considering the girl is fixed (not moving).

So the direction of the train movement would be the inverse of the girls movement (the girl is going West), then the speed and direction of the train is 5 mph and East.

Answer:

The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis. Together, the muscular system and skeletal system are known as the musculoskeletal system.

your question seems incomplete. Kindly give the full question so that it helps :)

Answer:

D.

producing ligaments and tendons

Explanation:

Answer:

For 6 its D

For 7 its A

For 8 its C

For 9 I think its B but Im not sure

Answer:

The part of a circuit that increases the electric potential of the electrons is the battery.

Answer:

Explanation:it is an electromotive force that increases the potential of the electrons.

Answer:

The acceleration of the car is [tex]3.7\ m/s^2[/tex].

Explanation:

It is given that,

Initial speed of the car, u = 0

Final speed of the car, v = 60 km/h = 16.66 m/s

Time, t = 4.5 s

We need to find the acceleration of the car. It is equal to the change in velocity divided by time taken. It can be given by :

[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{16.66-0}{4.5}\\\\a=3.7\ m/s^2[/tex]

So, the acceleration of the car is [tex]3.7\ m/s^2[/tex]. Hence, this is the required solution.

Answer:

3 is your anwser

Explanation:

Answer:

Insulation protects you. Thats because the insulation will make a wall almost where the electrons cannot travel through. So when you touch the insulation on a live wire your SAFE. Insulations may include rubber, wood, and air.

Answer:

I'm pretty sure its insulation

Explanation:

Answer:

1.) Time t = 3.1 seconds

2.) Height h = 46 metres

Explanation:

given that the initial velocity U = 30 m/s

At the top of the trajectory, the final velocity V = 0

Using first equation of motion

V = U - gt

g is negative 9.81m/^2 as the object is going against the gravity.

Substitute all the parameters into the formula

0 = 30 - 9.81t

9.81t = 30

Make t the subject of formula

t = 30/9.81

t = 3.058 seconds

t = 3.1 seconds approximately

Therefore, it will take 3.1 seconds to reach to reach the top of its trajectory.

2.) The height it will go can be calculated by using second equation of motion

h = ut - 1/2gt^2

Substitutes U, g and t into the formula

h = 30(3.1) - 1/2 × 9.8 × 3.1^2

h = 93 - 47.089

h = 45.911 m

It will go 46 metres approximately high.

Answer:

C. It decreases as the water releases energy to its surroundings

Explanation:

The energy that is possessed in the body because of the motion is said to be kinetic energy. When the water freezes, the kinetic energy of the water molecules decreases as the particles stop motion. The energy is released in the surrounding. Freezing takes place when the liquid molecules slow down and lose the kinetic energy to form the solid crystals.