what phase of the moon is shown in the photo above.
a) waning crescent
b) waxing gibbous
c) third quarter
d) waning gibbous

After 5 seconds, the rock would be traveling at 49 m/s provided there is no air resistance.

To determine the speed of the rock after 5 seconds of free fall without air resistance, we can use the equation of motion under constant acceleration due to gravity. The relevant formula, which is derived from the laws of motion, is:

v = u + at

Where:

v is the final velocity (what we want to find)

u is the initial velocity

a is the acceleration due to gravity (approximately 9.8 m/s² on Earth)

t is the time for which the object has been falling

Since the rock is dropped (meaning no initial velocity), u = 0 m/s. Thus, the equation simplifies to:

v = at

Substituting known values, we get:

v = 9.8 m/s²×5 s

v = 49 m/s

The speed of the rock after falling for 5 seconds from a cliff, in the absence of air resistance, can be calculated using the formula v = gt, where g is the acceleration due to gravity. After 5 seconds, the rock's speed will be 49 m/s.

The question asks for the speed of the rock after 5 seconds if it is dropped from a cliff with no air resistance. To solve this, we can utilize the formula for the velocity of a falling object due to gravity, which is v = gt, where 'v' is velocity, 'g' is the acceleration due to gravity (approximately 9.8 [tex]m/s^2[/tex] on Earth), and 't' is the time in seconds.

In this case, the initial speed is 0 m/s, so after 5 seconds the speed of the rock would be:

v = 9.8 [tex]m/s^2[/tex] × 5 s = 49 m/s

Therefore, the rock's speed after 5 seconds will be 49 m/s, assuming that there is no air resistance.

Answer:

molecule

Explanation:

An electromagnet is made from a coil of wire which acts as amagnet when an electric current passes through it. Often anelectromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by the coil.

Electromagnets and bar magnets have similar characteristics with north and south poles, but differ in that electromagnets need a power supply while bar magnets are permanent.

Electromagnets and bar magnets share similarities such as having north and south poles that attract and repel each other. They both produce a magnetic field around them.

However, electromagnets require an external power supply to generate a magnetic field, while bar magnets are permanent magnets that do not need an external power source.

Answer:

kjlp;;

Explanation:

Answer:

uranium gets used in bombs

Explanation:

Answer:

I believe it is A. Unbalanced.

Explanation:

Hope i helped you!

Unbalanced force causes an object to change its motion.

Answer: Option A

Explanation:

A force can be explained as push or a pull that has the tendency to change the velocity of a mass.

The force that makes any change in the movement of an object or body is known to be an unbalanced force. These forces are not equal and opposite. When an object is placed in a rest position and when unbalanced force acts on it, this will not make the object to move.

Example: Force applied against the ball.

The forces whose size is equal and opposite in their direction are known as balanced force. These forces will not make any change in motion of a body. When an object is placed in a rest position and when balance force acts on it, this will not make the object to move.

Example: Pushing against a wall.  

Answer:

1.67 m/s

Explanation:

Momentum is conserved.

Initial momentum = final momentum

(30 kg) (10 m/s) + (35 kg) (-10 m/s) = (30 kg) v + (35 kg) (0 m/s)

300 - 350 = 30v

v = -5/3 m/s

Linus will move at 1.67 m/s in the direction opposite that he started.

Answer:

8) inertia

9) mass and velocity

10) electric

11) decreases because gravity decreases

Hello There

Newtons first law of motion is sometimes called the law of "INERTIA"

Momentum depends on "MASS AND VELOCITY"

What force is responsible for the repulsion between two positively charged particles? "ELECTRIC"

An astronaut travels far away from Earth, her weight "DECREASES BECAUSE GRAVITY DECREASES"

p=mv

a).p=(0.003kg)(9m/s)+(0.05kg)(0m/s)=0.027kg*m/s

Answer:

a) 0.027 kgm/s

b) 0.027 kgm/s

c) 0.509 m/s

Explanation:

Mass of gum = m1 = 0.003 kg  

Mass of box = m2 = 0.05 kg  

Velocity of gum before collision = V1 = 9 m/s  

Velocity of box before collision = V2 = 0 m/s  

a) Momentum of system before collision = m1V1 – m2V2

                                    = (0.003)(9) – (0.05)(0) = 0.027 kgm/s  

b)According to law of conservation of momentum,

Momentum of system after collision = Momentum of system before collision

                                  Momentum of system after collision = 0.027 kg/s

c) as the gum and box behaving as a single object so their velocity (V’) will be same.

Momentum of system after collision = (m1 + m2)V’ = 0.027 kg/s

                                                            V’ = 0.027/(m1 + m2)

                                                            V’ = 0.027/(0.003 + 0.05)

                                                             V’ = 0.509 m/s

'A' and 'C' are the same point in time. When Summer ends, Autumn begins. An equinox occurs at that time.

The position of the Earth represents an equinox are A and C.

Equinox means both of the twice every year (as about March 21 and September 23) when the Sun crosses the equator and day in and day out are wherever on earth of around equivalent length.

The end of summer and the beginning of autumn occurs at the same point in time. When Summer ends, Autumn starts. An equinox occurs at this  time.

Thus, the correct option are A and C.

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Answer:

the answer is the last one

The electronic signs along the highway are run by solar power ​- this statement best describes to use for non-renewable resource.

A nonrenewable resource exists as a substance that is being utilized more quickly than it can substitute itself. Most fossil fuels, minerals, and metal ores exist as nonrenewable resources. Renewable resources such as solar and wind power and water exist unlimited in supply. Non-renewable energy creates up 95 percent of the world’s electricity needs. Most sources of non-renewable energy exist as fossil fuels such as petroleum, coal, gas, and oil. on-renewable energy exists energy sources that will ultimately run out when put to work.

The correct answer is option D.

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Answer:

Energy

Explanation:

Work is the transfer of energy

Explanation:

The situation described here is parabolic movement. However, as we are told that the rock was projected upward from the surface, we will only use the equations related to the Y axis.

In this sense, the movement equations in the Y axis are:

[tex]y-y_{o}=V_{o}.t+\frac{1}{2}g.t^{2}[/tex]    (1)

[tex]V=V_{o}-g.t[/tex]    (2)

Where:

[tex]y[/tex]  is the rock's final position

[tex]y_{o}=0[/tex]  is the rock's initial position

[tex]V_{o}=30\frac{m}{s}[/tex] is the rock's initial velocity

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

[tex]t[/tex] is the time the parabolic movement lasts

[tex]g=1.62\frac{m}{s^{2}}[/tex]  is the acceleration due to gravity at the surface of the moon

As we know [tex]y_{o}=0[/tex] , equation (2) is rewritten as:

[tex]y=V_{o}.t+\frac{1}{2}g.t^{2}[/tex]    (3)

On the other hand, the maximum height  is accomplished when [tex]V=0[/tex]:

[tex]V=V_{o}-g.t=0[/tex]    (4)

[tex]V_{o}-g.t=0[/tex]    

[tex]V_{o}=g.t[/tex]    (5)

Finding [tex]t[/tex]:

[tex]t=\frac{V_{o}}{g}[/tex]    (6)

Substituting (6) in (3):

[tex]y=V_{o}(\frac{V_{o}}{g})+\frac{1}{2}g(\frac{V_{o}}{g})^{2}[/tex]    (7)

[tex]y_{max}=\frac{{V_{o}}^{2}}{2g}[/tex]    (8)  Now we can calculate the maximum height of the rock

[tex]y_{max}=\frac{{(30m/s)}^{2}}{(2)(1.62m/s^{2})}[/tex]   (9)

Finally:

[tex]y_{max}=277.777m[/tex]  

Answer:

D

Explanation:

The resistors are in series (lined up in a row).  So the overall resistance is the sum:

R = 3.0 Ω + 4.0 Ω + 5.0 Ω

R = 12 Ω

Answer is D.

Can you give us the statements?

Answer:

384 N

Explanation:

Newton's second law:

∑F = ma

F = (32 kg) (12 m/s²)

F = 384 N

Answer:

F=384 N

Explanation:

F=ma

F = 32 kg × 12 m/s2

F = 384 N

#PennFoster

Answer:

swinging it with more force

Explanation:

swinging it hardly with more energy

Answer: You have to push it.

Explanation: Since you are pushing the pendulum, the energy from your hand transfers to the pendulum and the pendulum gains more kinetic energy. If you are writing an essay, change this a bit so you won't be caught plagiarizing. Please give a brainliest so I can continue giving answers like this.

According to the law of gravitation given by Newton, higher the altitudes, less the force of gravity experienced.

Answer: Option A.

Explanation:

The law of gravitation given by Newton, said that the gravity force is experienced more when close to the Earth. Therefore, increase in altitude, means that the individual or the object has gone much above the sea floor, and as the distance increases the force decreases. The force of gravitation is “inversely proportional to distance”.  

According to Newton’s law of universal gravitation, the statements which are true are "As we move to higher altitudes, the force of gravity on us decreases "and "As we gain mass, the force of gravity on us decreases".  

Newton’s law of universal gravitation:

According to this law, every particle of matter is said to pull towards every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

It can be expressed as:

F = (G × m1 × m2) / r²

F: gravitational force between two objects,

G: gravitational constant

m1 and m2: masses of the two objects

r: distance between the centers of the two objects.

Therefore, the correct statements are: As we move to higher altitudes, the force of gravity on us decreases "and "As we gain mass, the force of gravity on us decreases".  

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What two forces are required for generators and electric motors to work? “A” Electricity and magnetism.

In an electric motor, the energy transformation begins as “A” Electrical And becomes mechanical.

(a)  the two forces required for generators and electric motor to work is electricity and magnetism.

(b)  In an electric motor, the energy transformation begins as electrical and becomes mechanical.

According to Faraday's law, an emf is induced when there is a relative motion of a conductor placed in magnetic field.

Thus, the two forces required for generators and electric motor to work is electricity and magnetism.

Electric motor is a type of dynamo which converts electrical energy to mechanical energy.

Thus, In an electric motor, the energy transformation begins as electrical and becomes mechanical.

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The reason behind the second hill in the roller coaster not taller than the first hill is the frictional force acting on the roller coaster.

Explanation:

The height of the first hill in the roller coaster is taller with the decrease in the subsequent hills as the frictional forces reduces the kinetic energy.  

Coming down the first tallest hill, the speed and kinetic energy both increases as the motion is in line with gravity, but due to conservation of energy, the potential energy decreases. And as the potential energy decreases, the height of hill has to be decreased in order to complete the motion.

Answer:

The higher the spring constant, the greater the elastic potential energy.

Answer:

ITS C JUST FINISHED

Explanation:

Answer:

In a polar covalent bond, the electrons are unequally shared by the atoms and spend more time close to one atom than the other.

Explanation:

Answer: polar covalent bonding

Explanation:

A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.

Ionic bond is formed when there is complete transfer of electron from one atom to another atom.

Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms.

Water molecules are bonded by strong hydrogen bonding between the hydrogen atom and the electronegative oxygen atom by sharing of electrons and thus form polar covalent bonds.

Answer:

Neither. But I guess, if you look at it this way, they make up rocks... so I guess D is probably the most likely answer of those options. Hope this helps.

Answer:

The brick would heat up the fastest.

Explanation:

Bricks are thick but they absorb sunlight at an alarming rate.

A. brick

In thermodynamics, the specific heat capacity of a substance is the heat capacity of a sample of the substance divided by the mass of the sample, also sometimes referred to as massic heat capability.

specific heat is the amount of energy, measured in joules, needed to increase the temperature of 1 gram of the substance by one Celsius degree. often carried out to metallic elements, specific heat can be used as a basis for comparing how different materials absorb and transfer energy.

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Producing nuclear energy is far more environmentally friendly than burning fossil fuels. That is the main benefit.

The main risk is radiation. If the nuclear waste is not properly disposed of, it can leak radiation into the environment. Fortunately, this is not an issue since there are ways to deal with it. There is also the risk of a disaster like the Chernobyl incident, however that was mostly due to faulty reactor construction. However, reactors today are built to avoid such issues.

Nuclear energy is the energy released during nuclear fission or fusion, especially when used to generate electricity.

Advantages

Disadvantages

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Answer:

no, because the waves do not have the same amplitude

Explanation:

- "Gravity is a universal attraction between any two objects with mass. Every object in the universe is affected by the force of gravity. The two factors that affect the magnitude of gravity are the mass of the attracted objects and the distance between them. The greater the masses the greater the gravitational force between two objects."

Answer: True

Explanation:

Answer:

0.044 amps

Explanation:

Givens

R = 2500 ohms

E = 110 volts

I = ?

Equation

I = E/R

Solution

I = 110/2500

I = 0.044 amps

Answer:

capillary action and evaporation

Explanation:

The pulling effect of evaporating water from the leaves and other parts of plants provides the driving mechanism for water to reach greater parts in a plant. Evaporation of water during a hot day would cause water to rise through conduit-like pipes in plants which leads to rise of water from the root to areas that lacks them.

This process is even made much more easier by capillary action which is the unaided movement of water or fluid in a narrow tube as a result of its own pressure. Evaporation would facilitate the process of capillary action and together, they both drive water to greater reaches of plants from the root.

Answer:

Common Physical Changes. Texture. Color. Temperature. Shape. Change of State.

Physical Properties. Luster. Malleability. Ability to be drawn into a thin wire. Density. Viscosity.

Common Chemical Changes. Change in Temperature. Change in Color. Noticeable Odor. Formation of a Precipitate.

Explanation:

Physical changes can be reversed usually by heating or cooling a substance, without any chemical bonds being broken.

Chemical changes CANNOT be reversed due too the chemicals being broken and forming something new.

Btw, I know you didn't need chemical change, but I put it in there anyway. Hope it helps.

Answer: if you are talking about the body then increased hormones as physical changes  with growing in sexual parts  and for guys increase in with muscles and growing in breast.

If it was of a change in physical properties. as of natural in universe then it would be melting, transition to different states of matter.

Explanation:

When everyone gets of age they grow and mature and these kind of changes happen

The reason for that would be of the change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density, These are some examples of physicals changes

Answer: 2, the nuclear strong force drops to practically nothing at large distances.

Explanation: The protons and neutrons in the nucleus share subatomic particles called pions. This exchange is what keeps the protons and neutrons stuck together in the nucleus. Despite the strong force being the strongest force, it has a very small range. This is because pions have very short lifespans. So, the strong force would have literally no effect at large distances.

Hope that helped! :)

The true statement is; "the nuclear strong force drops to practically nothing at large distances"

The nuclear force refers to that attractive force that holds the nucleons together in the nucleus of an atom. These are short range forces and seek to minimize the degree of repulsion in the nucleus.

One statement that is true about the  nuclear strong force is; "the nuclear strong force drops to practically nothing at large distances".

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