The illustration shows the forces in Newtons (N) acting on three different blocks. Which
boxes will move under these conditions?

Answer:

Sun

Explanation:

Any asteroid in space is a celestial body. Classification of Celestial Bodies. A star is a form of a celestial object made up of a shining spheroid of plasma held together by its own gravity. The nearby star to Earth is the Sun.

Answer:

A gas

Explanation:

Responder:

E = 1440 kJ

Explicación:

Se da que,

La potencia de un horno de cocción es de 800 W

El voltaje al que se opera es de 230 V

Tiempo, t = 30 minutos = 1800 segundos

Necesitamos encontrar la energía eléctrica utilizada por el horno de cocción. El producto de la potencia y el tiempo es igual a la energía consumida. Entonces,

Answer:

four oxygen

Explanation:

Answer:

300 J

Explanation:

From conservation of energy;

Gravitational potential energy at top = Kinetic Energy at bottom

mgh = ½mv²

We are given;

Mass; m = 12 kg.

Height; h = 2.5 m

g = 10 m/s²

Thus;

mgh = 12 × 2.5 × 10 = 300 J

Since mgh = Kinetic Energy at bottom.

Thus; kinetic energy of the ball once it reach the ground = 300 J

Answer:

the answer is 2 electrons

Explanation:

The oxygen atom has atomic number 8, therefore its electronic configuration is

         1s² 2s² 2p⁴

the sublevel s has a capacity for 2 electrons so it is full

the sublevel p has capacity for 6 electrons, as in this atom it has only 4 electrons it needs two (2) more electrons to have its full capacity and to achieve maximum stability.

Consequently the answer is 2 electrons

Answer: The guy above is correct!

Explanation: It is A. two

Answer:

the first arrow goes to the top right

the second arrow goes to the bottom left

the third arrow goes to the bottom right

the fourth arrow goes to the top left

Answer:

(Example Person) has to push hard to get the skateboard started, but once it begins moving, it takes much less effort to keep it rolling over the smooth, flat pavement. In fact, if (Example Person) tries to stop the rolling skateboard, it may take as much effort to stop it as it did to start it rolling in the first place.

Explanation:

Hope this helps :)

Answer:

Explanation:

It's called static equilibrium. The object is motionless and every force equals/cancels each other out

Answer:

D

Explanation:

Because I said so

Resitance (R)= 10 Ohm

Potential difference (V) = 9V

V= IR

I= V/R

I= 9/10

I= 0.9 Ampere

Therefore 0.9 Ampere of current is flowing through the circuit.

The current through the circuit can be calculated using Ohm's law. The  current flowing through the circuit with a resistance of 10 ohm and 9 V is 0.9 ampere.

Ohm's law states that the potential difference or voltage across a circuit is the product of the current  and resistance through the circuit. Thus  as current or resistance increases, voltage across the circuit also increases.

According to Ohm's law, V= IR.

Given  the voltage V = 9 V

Resistance R = 10 ohm

Current = voltage/ resistance (V/R)

             =  9 V/ 10 Ω.

             = 0.9 A.

Therefore, the current passing  through the circuit is 0.9 A.

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Answer:

The less mass an object has, the less its gravitational  [force.]

Explanation:

Newton's Law of Gravity states that [tex]F_G=\frac{Gm_1m_2}{r^{2}}[/tex]. The two m values are the objects' masses, G is the gravitational constant, and r is the distance between the objects' centers. Notice how the mass values are in the fraction's numerator? That means increasing the mass of one or both objects increases [tex]F_G[/tex]. That also implies the inverse; decreasing the mass of one or both objects decreases [tex]F_G[/tex]!

I hope this helps you understand this concept a little more! Have yourself a fantastic day, 'kay?

Answer:

I think its distance

Explanation:

when measuring how far a p.o art u can use mm

Answer:

17.3 miles

Explanation:

Answer:

he shape is like granite, other rocks like this are shaped in the weather.

Explanation:

He shape is like granite, other rocks like this are shaped in the weather.

The primary source of the substance lime is limestone, a form of carbonate sedimentary rock composed primarily of calcium carbonate (CaCO3).

The minerals calcite and aragonite, which are various crystal forms of CaCO3, make up the majority of its material. As these minerals separate from water that has dissolved calcium, limestone is created.

Both biological and nonbiological activities can contribute to this, while biological processes—like the buildup of corals and shells in the sea—have probably been more significant during the past 540 million years.

Therefore, He shape is like granite, other rocks like this are shaped in the weather.

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Answer:

the change in momentum is 2.52 N·s

the constant force on the ball while in contact with the players foot is 126 N

Explanation:

p=momentum

m=mass

v=change in velocity

p=(0.42)(6)

p=2.52

The change in the ball's momentum is 2.52 kgms⁻¹

The constant force exerted by the players foot on the ball is 126 N

From the question,

We are to determine the change in momentum of the ball

Change in momentum calculated by using the formula,

[tex]\rho = m(v-u)[/tex]

Where [tex]\rho[/tex] is the change in momentum

[tex]m[/tex] is the mass

[tex]v[/tex] is the final velocity

and [tex]u[/tex] is the initial velocity

From the given information,

[tex]m = 0.42 \ kg[/tex]

[tex]u = 12 \ m/s[/tex]

[tex]v = 18 \ m/s[/tex]

Therefore,

Change in the ball's momentum,

[tex]\rho = 0.42 (18-12)[/tex]

[tex]\rho = 0.42 (6)[/tex]

[tex]\rho = 2.52 \ kgms^{-1}[/tex]

Hence, the change in the ball's momentum is 2.52 kgms⁻¹

For the force exerted by the players foot

Force is given by change in momentum with time

That is,

[tex]F = \frac{\rho}{t}[/tex]

Where

[tex]F[/tex] is the force

[tex]\rho[/tex] is the change in momentum

and [tex]t[/tex] is the time

From the given information

[tex]t = 0.020 \ s[/tex]

Therefore,

[tex]F = \frac{2.52}{0.020}[/tex]

[tex]F = 126 \ N[/tex]

Hence, the constant force exerted by the players foot on the ball is 126 N

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Answer:

A swimming pool appears shallower than it really is due to the phenomenon of REFRACTION. Due to refraction, from rarer medium( Air ) to denser medium ( water ), the pool looks shallower

Explanation:

Answer:

D force mass and distance

Answer:

The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. It is easier for us to take reading. It prevents the thermometric substance (Mercury or Alcohol) from running back into the bulb.

Explanation:

Hope it is helpful....

Answer:

constriction is made in a clinical thermometer because it prevents the thermometric liquid from running back into the bulb.

Answer:

D

Explanation:

He is storing energy to throw it.

Potential Energy = Stored Energy

Answer: B) Cells come in different shapes and different sizes.

Explanation:

Cell is the basic unit of life. Each cell forms the an integral component of the body of the living organism. The cell structure and function varies from organism to organism. The cells of the plants are comparatively larger than the animal cells. The plant cells are usually rectangular in shape whereas that of animals are usually circular or round in shape. The shape and size of the cells can vary depending upon the function and structure of the organism.

Answer:

Kinetic energy

Explanation:

The energy associated with an object's motion is called kinetic energy. A speeding bullet, a walking person, and electromagnetic radiation like light all have kinetic energy.

Kinetic energy. For example, a walking person.

Answer:

1= ionic bond

2 =covalent bonding

Explanation:

can answer the others sorry

Answer:

Explanation:

first get the velocity value in km/h

140/2=70km/h

to change the value (kilometers per hour) to meters per second divide by 3.6

70/3.6=19.44m/s

Answer:

Relative; curved; gravity.

Explanation:

According to Einstein, space and time are relative and are parts of a whole universe that has four dimensions. Masses in the universe curved space-time, and the resulting shape of space-time cause gravity.

The above theory is known as the General Relativity or General Theory of Relativity and it was published in 1915 by Albert Einstein.

Basically, it states that universe curved space-time is directly proportional to the energy and momentum of matter and radiation that is present. Thus, gravity is the universe curved space-time caused by massive objects.

Answer:

Complete the passage to describe one of the features of Einstein’s general theory of relativity.

According to Einstein, space and time are  

relative

and are parts of a whole universe that has four dimensions. Masses in the universe  

curve

space-time, and the resulting shape of space-time causes  

gravity

correct on Edge2021

Answer: below

Explanation: Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume

Answer:

Density is defined as the amount of matter contained in unit volume of body

Answer:

800W

Explanation:

48,000/60=800

The power rating of the hairdryer is 800W.

Power can be defined as the rate at which work is done by an object. The S.I unit of power is Watt(W).

The formula of power will be

Power = Work done/time

A hair dryer transfers 48K J of energy in one minute.

1 minute = 60 seconds

P = 48,000/60

P = 800 W

Hence, the power rating of the hairdryer is 800W.

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Answer:

hello

Explanation:

The man's average velocity is 73.3 mph (miles per hour).

Average velocity is a measure of the rate of displacement of an object in a given direction. It is the total displacement of the object divided by the total time taken to cover that displacement. In other words, it is the distance an object travels divided by the time it takes to travel that distance. Average velocity is an important concept in physics, as it can provide insight into the motion of an object and the forces acting upon it. Average velocity can be calculated using the equation: velocity = displacement/time.

This can be calculated by dividing the distance (55 miles) by the time (0.75 hours). Mathematically, this can be expressed as:

velocity = (distance / time)

velocity = (55 miles / 0.75 hours)

velocity = 73.3 mph

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