What are the answers for these?

Answer:

D.

Explanation:

all of the options are true.

Explanation:

T=1/f

So if frequency increases the period will decrease

Answer:

-12.12

Explanation:

i just added them together and it worked.

Answer:

Natural selection is a simple mechanism that causes populations of living things to change over time.  Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success.

Since the equivalent resistance is decreased then current must be increased in the circuit.

Resistance is defined as the obstruction offered by the circuit in the flow of charge or current.

When three resistors are connected in series then the total equivalent of all three is given by

[tex]R_{eq}=R_1+R_2+R_3[/tex]

Also in this case current is given by

[tex]I=\dfrac{V}{R_{eq}}[/tex]

Now if one of the resistance is removed

Then

[tex]R_{eq}=R_1+R_2[/tex]

let one of the resistance is removed

while current flowing in the open circuit will be given by

[tex]I=\dfrac{V}{R_{eq}}[/tex]

So here since resistance is decreased then current must be increased in the circuit.

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Answer:

B. The equivalent resistance would increase and the current would decrease.

Explanation:

Answer:

a person pushes water with his hands in the backward direction is action and water in turns pushes him forward due to force is reaction.

Explanation:

I disagree that folk dance forms can be outside their original meaningful form in this scenario.

This is the type of dance which is unique to a particular set of people and helps celebrate their culture.

This dance is a ritualistic entertainment which is done in different type of gatherings such as ceremonies etc which is why it isn't outside their original meaningful form.

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Answer:

Composition.

Explanation:

the inner planets tend to be made up of more solid materials such as iron, while outer planets are made up of primarily gas and ice

Answer:

Wave A has a lower frequency than Wave B.

Explanation:

Frequency is the number of waves passing through the unit time.

As the statement of the question says that the coils in wave A are widely and tightly spaced.

While in wave B the coils are widely and very tightly spaced which means the number of coils is more and the frequency of wave B is more than wave A.

Therefore more coils will pass through a fixed point in unite time and more will be the frequency.  

Answer:Wave A has a lower frequency than Wave B.

Explanation: edge

Answer:

wait in comments....................

The kinetic energy of the moving express train with the given value of mass and velocity is 7.5 × 10⁵Joules.

Kinetic energy is simply a form of energy a particle or object possesses due to its motion.

It is expressed as;

K = (1/2)mv²

Where m is mass of the object and v is its velocity.

Given the data in the question;

To determine the kinetic energy of the train, we substitute our given values into the above expression.

K = (1/2)mv²

K = (1/2) × 600kg × (50m/s)²

K = 0.5 × 600kg × 2500m²/s²

K = 750000kgm²/s²

K = 7.5 × 10⁵J

Therefore, the kinetic energy of the moving express train with the given value of mass and velocity is 7.5 × 10⁵Joules.

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[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

The Correct choice is D

Gene are special biomolecules that have all the required information of that organism, and has an instruction for making protein molecules.

Answer:

c

Explanation:

(a) The angular speed of the loops is 6.284 rad/s.

(b) The area of one loop is 0.071 m².

(c) The maximum emf of the generator is 111.54 V.

(d) The rms emf of the generator 78.87 V.

The angular speed of the loop is calculated as follows;

[tex]\omega = 60 \ \frac{rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1 \min}{60 \ s} \\\\\omega = 6.284 \ rad/s[/tex]

The area of the loop is calculated as follows;

A = πr²

A = π x (0.15)²

A = 0.071 m²

emf(max) = NBAω

emf(max) = (250) x (1) x (0.071) x (6.284)

emf(max) = 111.54 V

[tex]V_{rms} = \frac{V_0}{\sqrt{2} } \\\\V_{rms} = \frac{111.54}{\sqrt{2} } \\\\V_{rms} = 78.87 \ V[/tex]

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This supports the theory that these rings are formed from moons torn apart by tidal stress.

After Jupiter, the second-largest planet in the Solar System is Saturn. It's a giant planet with a radius around nine and a half times that of the Earth.

Saturn is only one-eighth the average density of Earth, yet it is 95 times more massive due to its bigger volume.

Saturn’s bright rings are located within the Roche limit of Saturn. This supports the theory that these rings are formed from moons torn apart by tidal stress.

Hence this supports the theory that these rings are formed from moons torn apart by tidal stress.

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500 km

distance = speed x time

Here given:

Distance: 100 x 5 ⇒ 500 km

Answer:

500 Km

Explanation:

Speed of the car = 100 km/h

Distance the car covers in 5 hours

= Speed of the car × time

= 100 × 5

= 500 Km

Hope this helps ⚜

Answer:

Vectors

Explanation:

Vector quantities have magnitude and direction in a given vector space or field

For a current is passing through a straight wire, the Magnetic field is mathematically given as,

B=5.535*10^5T.

Generally, the equation for the Magnetic field  is mathematically given as

[tex]B=\frac{\mu i}{ 2 \pi r}[/tex]

Therefore

[tex]B=\frac{4 \pi *10^{-7}*4.2.28}{2 \pi (1.6*10^-2)}[/tex]

B=5.535*10^5T

In conclusion, the magnetic field

B=5.535*10^5T

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Answer:

Most genes contain the information needed to make functional molecules called proteins. A few genes produce regulatory molecules that help the cell assemble proteins.

To build proteins, cells use a complex assembly of molecules called a ribosome. The ribosome assembles amino acids into the proper order and links them together via peptide bonds. This process, known as translation, creates a long string of amino acids called a polypeptide chain.

Explanation: Hope it helps you :)))))

Have a good day

Equilateral triangle means each interior angle has measure 60°

We need the resultant which is our dipole

[tex]\\ \rm\Rrightarrow R=\sqrt{A^2+B^2+2ABcos\theta}[/tex]

[tex]\\ \rm\Rrightarrow R=\sqrt{(q\ell)²+(q\ell)²+2(q\ell)(q\ell)cos60°}[/tex]

[tex]\\ \rm\Rrightarrow R=\sqrt{(q\ell)^2+(q\ell)^2+(q\ell)^2}[/tex]

[tex]\\ \rm\Rrightarrow R=\sqrt{3(q\ell)^2}[/tex]

[tex]\\ \rm\Rrightarrow R=\sqrt{3}{q\ell}[/tex]

Answer:

D

Explanation:

I got it right

Answer: 2

Explanation:

The statement "All magnets pick up paperclips, but the number of paperclips depends on the magnet" is neither a hypothesis nor testable.

The hypothesis that is not testable based on the given data is magnets will pick up metal objects but not plastic objects. Option C is the correct answer.

The reason this hypothesis is not testable based on the given data is that the information provided only pertains to the number of paperclips picked up by different magnets. It does not provide any information or evidence regarding the ability of magnets to pick up metal objects versus plastic objects. Option C is the correct answer.

In order to test this hypothesis, we would need data or experiments specifically focusing on the interaction between magnets and metal objects as well as magnets and plastic objects. The given data only provides information about the number of paperclips picked up by different magnets, which does not support or refute the hypothesis about the ability of magnets to pick up different materials.

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Answer:

See

distance is 10 km

displacement is 5√2 km

Explanation:

DISTANCE:

Distance is scaler so, it doesn't depend on the direction

so distance is 5+5 which is 10

DISPLACEMENT:

Displacement is a vector, so, it depends on direction.

Now when we see north and east, they form a right angle, so we need to calculate the hypotenuse of the triangle for displacement as it is the shortest route between the two points.

Let hypotenuse be h

Hope it helps

BYE.

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

The Correct choice is D

Heat always travel from higher temperature body to lower temperature. so we can infer that heat is transferred from the warmer water to the ice cubes which causes melting of that ice in there.

Given the data from the question,

The charge in a circuit is related to the current and time according to the following equation

Charge (Q) = current (I) × time (t)

Q = it

Q = it

Q = 2.5 × 39

Q = 97.5 C

Q = it

Q = 3.8 × 24

Q = 91.2 C

From the above calculations, we can conclude as follow:

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Answer:

BBB

Explanation:

Answer:

See below

Explanation:

For 30 m/s :

 KE = 1/2 mv^2

      1/2 (1850)(30^2) = 832500 J

For 120 km/hr :

120 km/hr = 33.333 m/s

  KE = 1/2 1850 (33.333)^2 1027777.8 J