The shape of an apple is considered what

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.

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Answer:

increase the time the force acts or you could increase the number of temptations.

hope this helped!

Answer:

-273.15 degree celcius

Explanation:

Answer:   All learning occurs through interactions with the environment; The environment ... In the before conditioning phase, an unconditioned stimulus is paired with an ... In our example, the conditioned response would be feeling hungry when you heard ... reinforce the salivation response to make sure the behavior is well learned.

Answer: the answer is C its in the book

Explanation:

The correct statement to describe that when a 100 J of heat energy is added to the system, then the kinetic energy of the system will increase  and the speed of the particles will also increase. Hence, option 3 is correct.

The force that an object has because it is moving is known as kinetic energy in physics. It is defined as the quantity of effort required to accelerate anybody of a specific mass from rest to its specified velocity. The body keeps its kinetic energy after acquiring it during acceleration, barring changes in speed.

When slowing from its current pace to a condition of rest, the body expends the very same amount of energy. Any term in the Lagrangian of a system that has a derivative in regard to time is formally referred to as kinetic energy.

When the energy is added to the system the gap between the particles will increase due to which the velocity of the molecules will increase and with increase in the velocity the kinetic energy will also increase automatically.

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Answer: C

high; large

Explanation:

The wave energy is related to its amplitude and frequency.

The wave energy is proportional to the amplitude of the wave. So, wave with the most energy will have high amplitude.

Also, frequency is related to wave energy. The larger the frequency, the more the energy of the wave.

Therefore, The waves with the MOST energy have high amplitudes and large

frequencies.

Answer:

Kinetic energy is greatest at the lowest point of a roller coaster and least at the highest point.

Potential energy will be greatest at the points A and G, and kinetic energy will be greatest at the point D.  

• The energy possessed by an object due to its motion is termed as the kinetic energy. On the other hand, the energy stored within an object because of its position relative to some zero position is known as the potential energy of the object.  

• Kinetic energy is highest when the velocity is the highest, in the case of pendulum, this takes place at the bottom. In the given case, that is, at point D.  

• If kinetic energy is highest at point D, then at the same point potential energy will be the lowest.  

• Therefore, potential energy would be highest at its highest point on each of the side of its motion where it remains stationary for some time, that is, at point G and A.  

Thus, kinetic energy would be highest at point D, and potential energy would be highest at the points A and G.

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Answer:

320N

Explanation:

Net force =w- AR

AR=w -force

AR=mg- ma

AR=80*9.8- 80*5.8

AR=784- 464

AR=320N

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.

Answer:

lois is right because throwing the water balloon is exerting a force running is not

Answer:

Vector Quantities Increase/Decrease in Temperature - The measurement of the medium's temperature is a scalar quantity; the measurement of the increase or decrease in the medium's temperature is a vector quantity. Velocity - The measurement of the rate at which an object changes position is a vector quantity.

Explanation:

Answer: velocity has a magnitude and a direction. This quantity is useful in every day lives in many ways. for example when you are  driving in a car, its good to know the velocity in which the car is going.

Explanation: sorry its late

Answer:

B.  85  V

Explanation:

E(rms) = E(peak-to-peak) / squareroot(2)

E(rms) = 120V / 1.414 = 84.9 V

(When  rounded)  =  85  V

The correct option about peak value and effective value of AC sine wave is, “85 V”.

Peak value = 120 V (Given)

Effective value = Peak value ÷ √2

Effective value = 120 ÷ √2

Effective value = 85 V (approximately)

Thus, we can conclude that by dividing the peak value by √2, we will get effective value and multiplying the effective value with √2 will give peak value as result.

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Explanation:

PRIMERO ENCUENTRAS LA COMPONENTE x

x = 5.9 m(cos62°) + 7.8 m(cos 29°) = 9.6 m

AHORA LA COMPONENTE y

y = 5.9 m(sen 62°) - 7.8 m(sen 29°) = 1.4 m

PARA ENCONTRAR DESPLAZAMIENTO:

R = [tex]\sqrt{(9.6 m)^{2} + (1.4 m)^{2}}[/tex] = 9.7 m

Answer:

7 m^2

Explanation:

P=F/A

1=7/A

1A=7

A=7

Area is 7 meters squared

Answer:

Not sure about the answer but I think its roller coaster

Explanation:

Answer:

golf ball

Explanation:

it is correct on edge

Answer: M.A = 3

Explanation:

A ramp is an example of an inclined plain. Where the

Height H = 1.5 m

Length L = 4.5 m

Mechanical advantage of a machine is the ratio of the load to effort. While mechanical advantage M.A of an inclined plain is the ratio of the length of the plain to the height of the plain.

M.A = L/H

Substitute the values of L and H into the formula

M.A = 4.5/1.5 = 3

The mechanical advantage of the ramp is 3

Answer:

i believe a

Explanation:

Answer:

C

Explanation:

the electric field point radically away from the charge

Answer:

19.1°C

Explanation:

If A and B mix to give 16°C, A has risen by 4°C and B has fallen by 3°C;

If B and C mix to give 23°C, B has risen by 3°C and C has fallen by 5°C;

This means the energy transfered to cause a change of 3°C in B causes a change of 4°C in A and 5°C in C;

We can use this as a ratio (4:5);

The temperature difference between A and C is 16°C;

we add the two parts of the ratio (4+5) to get 9 and divide the temperature difference to get 16/9;

Next we multiply this by one of the parts of the ratio, so with 4, you get 64/9;

This number is the proportional temperature change in A upon mixing;

We then add this to the original temperature of A to get the resultant temperature of the mix like so:

64/9 + 12 = 19.1111...

You can do this alternatively using the other part of the ratio;

We would multiply the 16/9 by the 5 instead of the 4 to get 80/9;

This number is the proportional change in temperature in C upon mixing

Then subtract this from this from the original temperature of C and you should get the same answer:

28 - 80/9 = 19.1111...

Answer:

By binding to enzymes' active sites, inhibitors reduce the compatibility of substrate and enzyme and this leads to the inhibition of Enzyme-Substrate complexes' formation, preventing the catalyzation of reactions and decreasing (at times to zero) the amount of product produced by a reaction.

Explanation:

Effective resistance = 2+1.5 = 3.5 ohms

Current in the circuit = 1.2 A

Lost volts in the battery = 1.8V

Current in one of the 3 ohms resistors = 0.6 A

I hope it helps

Answer:

Protons = 28

Neutrons = 42

Explanation:

Alpha decay is one of radioactive decay in which the atomic nuclei can be illustrated by the emission or loss of helium particles of mass number 4 and proton number of 2

Because mass number is the sum of protons and neutrons, If a (hypothetical) atom with 30 protons and 44 neutrons undergoes alpha decay, 28 protons will be left in the nucleus and 42 neutrons will be left in the nucleus.

Answer: the answer is D its in the book If u have it

Explanation:

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:

17.8 km/hr

Explanation:

Average speed = distance / time

The total distance traveled is 60 km + 84 km + 68 km = 212 km.

The total time is 2 hr + 1 hr + 8.9 hr = 11.9 hr.

The average speed is 212 km / 11.9 hr = 17.8 km/hr

Answer:

wave height ( H)

Explanation:

it is the total summation of crest and trough

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