PLEASE HELP ME IF YOU KNOW STUFF ABOUT ENERGY TYSM

Answer:

A isolate the DNA From a sample of cells

Answer:

C)No

Explanation:

When moving oxidation numbers down as subscripts in an ionic bond, you do not include the charge either positive or negative.

The process of moving oxidation number down as subscript is known as exchange of valency.

The combining power is used in exchanging valency and this is oxidation number exchanged. The number corresponds to the number of electrons usually lost or gained or shared by atoms of elements during chemical combination or the number of positive or negative charges carried by ions.

The combining power is exchanged as simple whole number ratio during the formation of chemical formulae of compounds.

Answer:

2.5m/s^2

Explanation:

to answer this question the best method would be to use SUVAT equations (attached)

here we have:

U= 0ms

v=25ms

t=10sec

a=?

the best equation to use in this instance is

v = u + at

substitute in the known values:

25=a10

25/10=a

2.5m/s^2 =a

Answer:

Na: lose 1

O: gain 2

Al: lose 3

Be: lose 2

N: gain 3

Cl: depends on the limit of your study im grade nine and the energy level M can hold only eight electrons so i would have answered (gain 1)

Answer:

8550 J

Explanation:

Recall that the work performed is the product of the force applied times the distance covered in the same direction of the force. Therefore, for the values given, we have:

Work = 190 N * 45 m = 8550 J

Answer:

True

Explanation:

Pre-questioning may help a reader focus on information s/he hopes to find in the reading selection.

Answer:

True!!

Explanation:

I took the practice thing on edge :))

Answer:

If your basis is water, then yes. It will float because thw density of water is 1. Anything lower than 1 will float ON WATER but anything higher than 1 will sink.

Answer:

Speed is distance over time, so v = λ / T. The frequency, f, is 1/T, so the equation relating wave speed, frequency, and wavelength is v = f λ .

Explanation:

please mark me as brainliest thank you

Explanation:

the last equation is the answer

6 CO2 + 6H2O → C6H12O6 + 6 O2

Answer:

I don't know this answer at all

Explanation:

I don't know about these problems

Answer:

1200

Explanation:

a = 1.5 m/s2

F = 1800N

M =?

F = Ma

M = F/a = 1800/1.5 = 1200Kg

Answer:

d = 27.03 m

Explanation:

Constant Speed Motion

An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.

Expressed in a simple equation, we have:

[tex]\displaystyle v=\frac{d}{t}[/tex]

Where  

v = Speed of the object

d = Distance traveled

t = Time taken to travel d.

From the equation above, we can solve for d:

d = v . t

It's required to find the distance traveled by someone walking at v=1.7 m/s for t=15.9 s. Substituting in the last equation:

d = 1.7 m/s * 15.9 s

d = 27.03 m

Answer:

The tennis ball

Explanation:

It will have more kinetic energy because the tennis ball is more heavier than a wiffle ball. Furthermore, objects that are heavy will have more kinetic energy than objects that are light. Therefore, the tennis ball is the correct answer.

Answer:

Explanation:

Given parameters:

Acceleration = 0.0m/w

Initial velocity = 0m/s

Final velocity  = 00m/s

Unknown:

Distance traveled  = ?

Solution:

To solve this problem, we use the expression below:

    q0   = y   + 0w

W is the final velocity

Y is the initial velocity

C is the acceleration

P is the distance

          0²  = 0²   +  (0 x 0.0 x S)

          000  = 00.0S

            S = 0m

Answer:

[tex]e.p.e = \frac{1}{2} k {x}^{2} \\ = \frac{1}{2} \times 25 \times (0.015m)^{2} \\ = 0.0028125[/tex]

0.0028125N

Answer:

Described below

Explanation:

- The behaviorist theories: This theory is of the claim that language is learned through the means of reinforcement and imitation. This means that little children can mimic the language of individuals around them and also receive reinforcement to correct the formation of their words. Thereafter, words not reinforced will eventually no longer be in use.

- The nativist theories: This theory is of the claim that individuals possess an innate process which is used in language learning and is widely known as "language acquisition device" (LAD). This device is used to assist in helping them automatically learn languages.

-The interactionist theories: This theory is of the claim that innate processes which is also referred to as genetic predispositions and learning experiences from the environment both help in language development.

The behaviorist theory posits that infants learn oral language through imitation, rewards, and practice.

It should be noted that human role models in an infant's environment provide the stimuli and rewards.

Nativist theories state that language is an innate fundamental part of the human genetic make-up and it is a natural part of the human experience. Children have language-specific abilities that assist them as they work towards mastering a language.

The interactionist theories states that innate processes help in language development. It states that children can only learn language from the people who want to communicate with them.

Read related link on:

https://brainly.com/question/9032544

Answer:

the spring would end up being 10.0 n/ M

Answer: The horizontal velocity of a projectile is constant (a never changing in value. The vertical velocity of a projectile changes by 9.8 m/s each second.

Explanation: I hope that helped!

Explanation:

key to this problem is the impulse-momentum theorem which states that the change in the momentum of an object is equal to the impulse applied into it.

J

=

Δ

p

,

where

J

is the impulse and

Δ

p

is the change in momentum. Basically, the impulse is the product of force and time duration, that is,

J

=

F

Δ

t

In this problem, the impulse would be the product of the force stopping the rock and

0.7

s

.

On the other hand, momentum

p

is the product of the mass

m

and velocity

v

. Therefore, the change in momentum is given by

Δ

p

=

m

2

v

2

−

m

1

v

1

.

Starting with the impulse-momentum equation, we have

J

=

Δ

p

F

Δ

t

=

m

2

v

2

−

m

1

v

1

Divide both sides by

Δ

t

,

we get

F

Δ

t

Δ

t

=

m

2

v

2

−

m

1

v

1

Δ

t

F

=

m

2

v

2

−

m

1

v

1

Δ

t

Finally, substitute the values and we get

F

=

(

2

kg

)

(

0

)

−

(

2

kg

)

(

6

m

s

)

(

0.7

s

)

F

≈

−

20

kg

m

s

2

Since

1

N

=

1

kg

m

s

2

,

then

F

≈

−

20

N

Therefore, using the correct significant figures (in this case, we need one significant figure since 2 kg, 6 m/s and 0.7 s all have one) in the final answer, we would need to have approximately

20

N

force to stop the rock in

0.7

s

.

Note: The negative sign is referring to the direction of the force opposite of the direction of the velocity

v

1

.

Answer:

it gives people light

Explanation:

the light bulb is very important and if it affects other because it gives us light and we need light for tons of stuff

Answer:

225-Ib person weighs 1000 N

Answer:

The new volume will be = 2.41L

Explanation:

V1 = 2L

V2 = ?

T1 = 20⁰C = 293K

T2 = 80⁰C = 353K

From Charles law V is directly proportional to T

V1/V2 = T1/T2

V2 = (V1×T2)÷T1

just make substitution yourself

Answer:

cant see image ..

Answer:

brainly getting too strict smh...

Explanation:

Answer:

A- 125 N

Explanation:

Given parameters:

Force applied to the mass  = 40N

Acceleration = 8m/s²

First let us find the mass of this body before we proceed to solve the main problem.

  From Newton's second law of motion:

         Force  = mass x acceleration

          40  = mass x 8  

           mass  = 5kg

New acceleration  = 25m/s²

 The force needed;

           Force  = mass x acceleration

          Force  = 5 x 25  = 125N

Let the final temperature be "T".

For the piece of copper :

Then the heat of copper :

[tex]\sf{\dashrightarrow Q_c=m_cc_c\,\Delta\!T_c}[/tex]

[tex]\sf{\dashrightarrow Q_c =16(T-200)\ J}[/tex]

For copper calorimeter :

Then the heat of copper calorimeter :

[tex]\sf{\dashrightarrow Q_{cc} =m_{cc}c_{cc}\,\Delta\!T_{cc}}[/tex]

[tex]\sf{\dashrightarrow Q_{cc} =24(T-25)\ J}[/tex]

For water :

Then heat of water :

[tex]\sf{\dashrightarrow Q_w=m_wc_w\,\Delta\!T_w}[/tex]

[tex]\sf{\dashrightarrow Q_w=210(T-25)\ J}[/tex]

By energy conservation, the sum of all these energies should be zero as there were no heat energy change before the process, i.e.,

[tex]\sf{\dashrightarrow Q_c+Q_{cc}+Q_w=0}[/tex]

[tex]\sf{\dashrightarrow16(T-200)+24(T-25)+210(T-25)=0}[/tex]

[tex]\sf{\dashrightarrow 250T- 9050=0}[/tex]

[tex]\sf{\dashrightarrow T=36.2^{\circ}C}[/tex]

[tex] \large \underline{\underline{\boxed{\sf T=36.2^{\circ}C}}}[/tex]

____________________________

[Note: in case of considering temperature difference it's not required to convert the temperatures from [tex]\sf{^{\circ}C}[/tex] to K or K to [tex]\sf{^{\circ}C}[/tex].]

Answer:

The magnitude and direction of the force applied by Steinberg are approximately 15.192 newtons and 126.704º.

Explanation:

The chew toy is at equilibrium and experimenting three forces from three distinct dogs. The Free Body Diagram depicting the system is attached below. By Newton's Laws we construct the following equations of equilibrium: (Sp is for Spot, F is for Fido and St is for Steinberg) All forces and angles are measured in newtons and sexagesimal degrees, respectively:

[tex]\Sigma F_{x} = F_{F}\cdot \cos \theta_{F} + F_{St,x} = 0[/tex] (1)

[tex]\Sigma F_{y} = F_{F}\cdot \sin \theta_{F}-F_{Sp}+F_{St,y} = 0[/tex] (2)

If we know that [tex]F_{F} = 20\,N[/tex], [tex]F_{Sp} = 30\,N[/tex] and [tex]\theta_{F} = 63^{\circ}[/tex], then the components of the force done by Steinberg on the chewing toy is:

[tex]F_{St,x} = -F_{F}\cdot \cos \theta_{F}[/tex]

[tex]F_{St,x} = -(20\,N)\cdot \cos 63^{\circ}[/tex]

[tex]F_{St, x} = -9.080\,N[/tex]

[tex]F_{St,y} = F_{Sp}-F_{F}\cdot \sin \theta_{F}[/tex]

[tex]F_{St,y} = 30\,N-(20\,N)\cdot \sin 63^{\circ}[/tex]

[tex]F_{St, y} = 12.180\,N[/tex]

The magnitud of the force is determined by Pythagorean Theorem:

[tex]F_{St} = \sqrt{F_{St,x}^{2}+F_{St,y}^{2}}[/tex]

[tex]F_{St} =\sqrt{(-9.080\,N)^{2}+(12.180\,N)^{2}}[/tex]

[tex]F_{St} \approx 15.192\,N[/tex]

Since the direction of this force is in the 3rd Quadrant on Cartesian plane, we determine the direction of the force with respect to the eastern semiaxis:

[tex]\theta_{St} = 180^{\circ} + \tan^{-1} \left(\frac{F_{St,y}}{F_{St,x}}\right)[/tex]

[tex]\theta_{St} = 180^{\circ} + \tan^{-1} \left(\frac{12.180\,N}{-9.080\,N}\right)[/tex]

[tex]\theta_{St} \approx 126.704^{\circ}[/tex]

The magnitude and direction of the force applied by Steinberg are approximately 15.192 newtons and 126.704º.

Answer:

as it travel through the space it behave like a wave and has an oscillating electric field components and an oscillating magnetic field

Electromagnetic waves are created by a charged particle that generates an electric field. The electric field creates a magnetic field. As the charged particle moves, the electric field and magnetic field keep changing, which causes the wave to move.