1. Find potential difference of the energy
source for a current of 7 A to be
carried through a Wire.

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:

true

Explanation:

I did this unit for science

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:

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:

11

Explanation:

The ideal mechanical advantage of a lift would be 11, which allows you to raise a 90.0 - kg refrigerator with 80.0 N of force, therefore the correct answer is option A .

Mechanical advantage is defined as a measure of the ratio of output force(load) to the input force(effort) in a system, It is used to analyze the forces in simple machines like levers and pulleys .

Mechanical advantage = load / effort

As given in the problem we have to find out the e ideal mechanical advantage of a lift that allows you to raise a 90.0-kg refrigerator with 80.0 N of force ,

The mechanical advantage of the lift = 90 × 9.8 / 80.0

                                                              = 11

Thus , the ideal mechanical advantage of a lift would be 11 ,

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Answer:

im just 15 yearsold hehhez i dont know that either

Answer:

add the Resistance

2(100)= 200

2) 200 ohms

If two 100 ohms resistors are placed in series, their total resistance will be 200 ohms

When two or more resistors are connected end to end consecutively , they are said to be connected in series combination .Total resistance in  series combination is calculated as the algebraic sum of individual resistances

General formula = R (equivalent ) = R1 + R2 + R3 + .......

let R1 = 100 ohms

R2 = 100 ohms

R(equivalent resistance in series combination )= R1 + R2

R = 100 + 100

R = 200 ohms

If two 100 ohms resistors are placed in series, their total resistance will be b) 200 ohms

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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:

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:

40

Explanation:

30

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!

Explanation:

We need convert the velocities first to m/s and we get the following:

v2 = 21 km/hr = 5.8 m/s

v1 = 11 km/hr = 3.1 m/s

We need to find the mass of the car also for later use do using the work-energy theorem:

[tex]delta \: w = \frac{1}{2} m(v \frac{2}{2} - v\frac{2}{1} )[/tex]

6.0x10^3 J = (0.5) m [(5.8)^2 - (3.1)^2]

or

m = 499.4 kg

Now we determine work needed delta W to change its velocity from 21 km/hr to 33 km/hr

v2 = 33 km/hr = 9.2 m/s

v1 = 21 km/hr = 5.8 m/s

delta W = (0.5)(499.4)[(9.2)^2 - (5.8)^2]

= 1.3 x 10^4 J

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:

(u mean theory* i think)

Grounded theory differs from either qualitative content analysis or thematic analysis because it has its own distinctive set of procedures, including theoretical sampling and open coding. In contrast, the procedures in the other two are not specified at the same level of detail.

thenks and mark me brainliestt :))

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:

Brown dwarf has the lowest temperature

Answer:

1. Is a different pitch, has a different speed

2. is brighter or dimmer, has a different energy

Explanation:

Answer:

20654 N

Explanation:

Applying

F = kqq'/r²........... equation 1

Where F = Force between the charge, q = First charge, q' = second charge, r = distance betweeen the charge, k = coulomb's constant.

From the question,

Given: q = -0.0004 C, q' = 0.00092 C, r = 0.4 m

Constanr: k = 8.98×10⁹ Nm²/C²

Substitute these values into equation 1

F = ( -0.0004×0.00092×8.98×10⁹)/(0.4²)

F = (3.30464×10³)/0.16

F = (3304.64)/0.16

F = 20654 N

Hence the force between the charges is 20654 N

Answer:

football, basketball

Explanation: LEAVE AN BRAINLEST!!

Answer:

D. Electric energy into mechanical energy

Explanation:

hope it helps

#CarryOnLearning

Answer:

It will be the second one.

Explanation:

The reason it is the second one is because it is bound by two spherical surfaces bulging outwards. The second is doing just that.

A convex lens is shaped like two half circles, with a thin edge and a thick centre. The second lens is a convex lens.

A convex lens has a thin edge and a thick centre and is shaped like two half circles. Convex lenses are converging and can produce virtual and real images. Light is bent inward by a converging lens, causing light rays to collide and form an image.

The convex lens is a lens that converges light rays that are parallel to its principal axis (i.e. converges incident rays towards the principal axis) and is relatively thick in the centre and thin at the lower and upper edges.

The edges are curved outward, not inward. It is used in front of the eye to sharply bend incoming light, causing the focal point to shorten and the light to focus properly on the retina.

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Answer:

4.5 m/s

Explanation:

13.5 x 1/3

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:

Positions

Batting

Pitching

Explanation:

Answer:

Frequency=  0.16655137

Explanation:

may i be brainliest?

Answer:

100 ml de una disolucion 05 M de sulfate de vivre

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.