A mover pushes a 255 kg piano
with a 77.5 N force to the left, while
a second mover pulls the piano
48.7 N to the left. What is the
acceleration of the piano?
(Watch your minus signs.)
(Unit = m/s2)

Answer:A

Explanation:I believe the correct answer would be they join north pole to south pole. The direction of these lines always goes from the direction of north to south pole. These lines forms loops in order to favor the way which requires or has less resistance.

They point away from the north pole and towards the south pole, is the statement correctly describing magnetic field lines around a bar magnet.

A bar magnet is a rectangular section of an item that has permanent magnetic qualities and is made of iron, steel, or any other ferromagnetic material or ferromagnetic composite.

It has two poles, one north, and one south, and when hanging freely, the magnet aligns itself such that the north pole faces the earth's magnetic north pole.

They point away from the north pole and towards the south pole, the statement correctly describes magnetic field lines around a bar magnet.

Hence statement B correctly describes magnetic field lines around a bar magnet.

To learn more about the bar magnet refer to the link;

https://brainly.com/question/708941

Answer:

(a) k = 80 N/m   (b) x = 75 cm

Explanation:

The question says that, "A spring is elongated 30 centimeters when we exert a force of 24 N on it a) calculate the value of the spring constant b) calculate the elongation of the spring when applying a force of 60 N"

Given that,

Force exerted on the spring, F = 24 N

Elongation in the spring, k = 30 cm =0.3 m

(a) We know that, the force on the spring is given by :

F = kx

Where

k is spring constant

So,

[tex]k=\dfrac{F}{x}\\\\k=\dfrac{24}{0.3}\\\\k=80\ N/m[/tex]

(b) When F = 60 N,

[tex]x=\dfrac{F}{k}\\\\x=\dfrac{60}{80}\\\\x=0.75\ m\\\\x=75\ cm[/tex]

Hence, this is the required solution.

Answer:

the answer is c. producers, detrivores

Answer:

Protists cells: ribosomes, mitochondria, and chloroplasts.

Fungus cells: cell walls, nuclei, mitochondria, endoplasmic reticulum, Golgi apparatus, endosomal vacuoles, various types of vesicles, and peroxisomes.

Plant cells: chloroplast, cell wall, plastids, and a large central vacuole.

Animal cells: nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles.

Answer:

1) Ribosomes: Are the organelles responsible for synthesizing all the proteins the protist will need

Mitochondria: which are the organelles responsible for turning food into energy the cell can use

Chloroplasts, which are the organelles that are able to capture sunlight

____________________________________________________________

2) Mitochondria: Developmental and morphogenetic switches such as hyphal differentiation and biofilm formation, adaptation to stress, cell wall biosynthesis and structure.

Endoplasmic reticulum: harbors several of the enzymes involved in the biosynthesis of ergosterol, an essential membrane component

Golgi apparatus: performs crucial functions in the sorting and processing of proteins destined for secretion

____________________________________________________________

3) Chloroplast: Allow plants to capture the energy of the Sun in energy-rich molecules and carries out the process of Photosynthesis.

Cell wall: The cell wall surrounds the plasma membrane of plant cells, providing structure and protects the plant from mechanical and osmotic stress.

Plastids: responsible for manufacturing and storing of food. These often contain pigments that are used in photosynthesis

Vacuole: Simply helps maintain water balance, usually large and takes up most of the space in a plant cell.

____________________________________________________________

4) Nucleus: Controls and monitors the activities of the cell and carries the genes, structures that contain the hereditary information for their offspring.

Mitochondria: Generates most of the chemical energy needed to power the cell's biochemical reactions.

Endoplasmic reticulum: Serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins.

Golgi apparatus: Helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.

Vesicle: Transport vesicles help move materials, such as proteins and other molecules, from one part of a cell to another

Vacuole: Are generally small and help dispose waste products in the cell.

Ribosomes: Link together specific amino acids to form polypeptides and they export these to the cytoplasm.

Answer:D

Explanation:

The force of gravity from Mars will pull on the space probe the same amount no matter how far away it is​, so option D is correct.

All material objects in the universe are subject to the force of gravity, also known as gravitation. The force of gravity tends to draw any two non-zero mass objects or particles toward one another. Subatomic particles and galaxy clusters are both affected by gravity, as are objects of all sizes.

Due to the law of gravity, or gravitation, which draws all objects with mass in its vicinity toward it, Mars' gravitation is a natural occurrence. Due to the planet's lesser mass, its gravity is weaker than that of Earth. On Mars, the gravitational acceleration fluctuates, but on average it is 3.72076 m/ s² (or around 38% of Earth's).

Therefore, the force of gravity from Mars will pull on the space probe the same amount no matter how far away it is​.

To know more about gravity:

https://brainly.com/question/9722860

#SPJ2

Answer:

4.5 m/s

Explanation:

13.5 x 1/3

Answer:

[tex]F_1=540*10^{-12} N[/tex]

[tex]F_2=-1080 * 10^{-12} N[/tex]

[tex]F_3=-2268 * 10^{-12} N[/tex]

Explanation:

From the question we are told that

Charge on objects

[tex]Q_1=4.0 * 10^6 C[/tex]

[tex]Q_2= 6.0 * 10^6 C[/tex]

[tex]Q_3= +9.0 * 10^6 C[/tex]

Distance apart [tex]d=0.50m[/tex]

Generally the equation for Force on individual Charge is mathematically given by

For Q_1

[tex]F_1=\frac{d*Q_1Q_2}{r^2}+\frac{ d*Q_1Q_3}{4r^2}[/tex]

[tex]F_1=\frac{k*(4.0 * 10^6 C)(6.0 * 10^6 C)}{0.5^2}+\frac{ d*(4.0 * 10^6 C)( +9.0 * 10^6 C)}{4(0.5)^2}[/tex]

[tex]F_1=540*10^{-12}[/tex]

For Q_2

[tex]F_2= \frac{k}{0.5^2[Q_1 + Q_3]Q_2}[/tex]

[tex]F_2= \frac{k}{0.5^2[4.0 * 10^6 C + 9.0 * 10^6 ]*6.0 * 10^6 C}[/tex]

[tex]F_2=-1080 * 10^{-12} N[/tex]

For Q_3

[tex]F_3=\frac{kQ_3}{r^2[Q_1/4+Q_2}[/tex]

[tex]F_3=\frac{k(+9.0 x 10^6 C)}{(0.5)^2[(4.0 x 10^6 )/4+(6.0 x 10^6 C)}[/tex]

[tex]F_3=-2268 * 10^{-12} N[/tex]

Answer:

u of spring is found by 1/2 k x^2

Explanation:

k is spring constant.

Answer:The triple beam balance can measure mass to the nearest tenth of a gram (0.1 g).

Explanation:

Answer:

im just 15 yearsold hehhez i dont know that either

Answer:

the nucleus of the atom you have conserved almost all its mass in a very small volume

Explanation:

In Rutherforf's experiment, most alpha particles had few deflections, eg a few of them were deflected at small angles, a much smaller number deflected at large angles, and very few were deflected.

The explanation that I found for this is that if all the mass and the positive charge of the atom is in a small volume, they could specifically calculate this the relationship of the volumes,

          V_atom / V_nucleo = 10⁴

Therefore, the phrase that explains the observing phenomenon is that the nucleus of the atom has concentrated almost all its mass, very small emolument and in that same volume is all the positive charge of the atoms.

In summary, the phrase that describes the process is:

  the nucleus of the atom you have conserved almost all its mass in a very small volume

Answer: An educated guess based on observations

Explanation: A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.

Hope This Helps!

Pls Mark Me brainliest

-ur gurl Lizzie

Complete question is;

Selena drew a diagram to show how current moves in a loop of wire that is placed between two magnets. At top left a piece of magnet labeled N and at top right a piece labeled S. Between these a square coil of wire with green arrows at its ends away from the magnets pointing away from the magnets. Red arrows point from N to S. Which best explains how Selena can correct her error?

A) She can change the magnets so like poles are facing each other.

B) She can change the arrows so they show current traveling in opposite directions on the sides of the loop.

C) She can change the arrows so they show the magnetic field reversing direction between the magnets.

D) She can change the magnetic poles so they are both on one side of the loop.

Answer:

B) She can change the arrows so they show current traveling in opposite directions on the sides of the loop.

Explanation:

Since the direction of the arrows point north and south whereas the magnets are east and west, it means the arrows are not pointing in the correct direction. To correct it she will have to make sure the arrows are pointing in opposite directions of the magnet via the sides of the loop.

Answer:

The answer is B

Explanation: Good luck on the test!

Answer:

1.65 atm

Explanation:

Applying,

PV = nRT....................... Equation 1

Where P = Pressure, V = Volume, n = number of moles, R = malar gas constant, T = Temperature.

Make P the subject of the equation

P = nRT/V..................... Equation 2

From the question,

Given: n = 3.27 moles, V = 50.0 L, T = 35 °C = (273+35) = 308K

Constant: R = 0.082L.atm/K.mol

Substitute these values into equation 2

P = 3.27(0.082)(308)/(50)

P = 1.65 atm

Answer: 167000

Explanation:

Correct on acellus with three sig figs. Just have to convert atm to Pa

Answer:

Radioactive decay: is the process by which an unstable atomic nucleus loses energy by radiation.

Half-life: in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive material to decrease by one-half.

Radiometric dating: is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes.

Answer:

Awareness was selected because it was beneficial to organisms in particular environments.

Explanation:

Based on the article, natural selection is a phenomenon that recognizes and allows traits that are useful to an organism and that would be favorable for it to be passed from one generation to another.

Natural selection marked awareness as a useful trait that would be beneficial for organisms because it helped them adapt well to the particular environments that they found themselves. For example, this ability helped an organism to be able to recognize where it could get food and light in its environment.

Answer:

The coastal zone is not a stable and constant environment, but a dynamic place that can change rapidly in response to natural processes such as seasonal weather patterns. Waves, winds, currents, tides and storms are the major forces on the coast.

Explanation:

Answer:

I₁ = 5.45 A

I₂ = 9.1 A

I₃ = 3.27 A

Explanation:

Electrical power is defined as the product of current and displacement.

[tex]P = VI\\\\I = \frac{P}{V}[/tex]

where,

P = Power of Device

I = current passing through the device

V = voltage across the device = 220 V

FOR P₁ = 1200 W

[tex]I_1 = \frac{1200\ W}{220\ V}[/tex]

I₁ = 5.45 A

FOR P₂ = 2000 W

[tex]I_2 = \frac{2000\ W}{220\ V}[/tex]

I₂ = 9.1 A

FOR P₃ = 720 W

[tex]I_1 = \frac{720\ W}{220\ V}[/tex]

I₃ = 3.27 A

Answer:

1. Is a different pitch, has a different speed

2. is brighter or dimmer, has a different energy

Explanation:

Answer:

please mark me as a brainleast and follow me please my soster

Answer:

try to stay open, dont just stand there, u gotta keep moving around. maybe set a screen for ur teamate so they can get to the basket quickly, but regardless, stay open and stay moving

Explanation:

u talking about basketball right?

Answer:

B, C, F

Explanation:

B: Sugar can be separated from the water by evaporating the water. This will leave large chunks of sugar.

C: Sugar gets spread out among the water.

F: Sugar water is a homogeneous mixture. Can't see the individual components because of the dissolving.

Hoped this helped! :)

Answer:

Brown dwarf has the lowest temperature

Answer:

1.) The 1ˢᵗ three term is (-32), (-7) and 18

2.) The 1ˢᵗ three term is 127, 106 and 85

Step-by-step explanation:

Here,

First Term = a₁ = - 32

Common Difference = (d) = 25

Now, For 1ˢᵗ three term,

n = 1

a₁ = - 32

n = 2

aₙ = a + (n - 1)d

a₂ = (-32) + (2 - 1) × 25

a₂ = (-32) + 1 × 25

a₂ = (-32) + 25

a₂ = -7

n = 3

aₙ = a + (n - 1)d

a₃ = (-32) + (3 - 1) × 25

a₃ = (-32) + 2 × 25

a₃ = (-32) + 50

a₃ = 18

Thus, The 1ˢᵗ three term is (-32), (-7) and 18

Here,

First Term = a₁ = 127

Common Difference = (d) = -21

Now, For 1ˢᵗ three term,

n = 1

a₁ = 127

n = 2

aₙ = a + (n - 1)d

a₂ = 127 + (2 - 1) × (-21)

a₂ = 127 + 1 × (-21)

a₂ = 127 - 21

a₂ = 106

n = 3

aₙ = a + (n - 1)d

a₃ = 127 + (3 - 1) × (-21)

a₃ = 127 + 2 × (-21)

a₃ = 127 - 42

a₃ = 85

Thus, The 1ˢᵗ three term is 127, 106 and 85

-TheUnknownScientist

Answer:

D. Electric energy into mechanical energy

Explanation:

hope it helps

#CarryOnLearning

Answer: The angle of incidence equals the ray of reflection. So this law states that any ray of light that strikes an object will reflect off the object such that the striking or incident angle is identical to the reflecting angle (as measured from the normal).

Explanation:

Answer:

an earthquake

Explanation:

the energy is being released

That is correct

There is not answer choices but I think its true

Are you good with compare and contrasting?

If so, look at my recent question please

Answer:

No and yes it's like a 30%or 20%

Explanation:

"researchers say that there is no proof that dimples are inherited."

meaning that if the mom or dad had dimples it might have a chance or no since a dominant trait not a recessive trait