How many valence electrons does the hydrogen and oxygen have in the following picture?

Answer:

A.without a long antenna, 're signal will not travel far

Answer:

b

Explanation:

bbbbbbbbbbbbbbvgh c tyvftj xf

Answer:

To the Left

Explanation:

Answer:

A. 420 J

Explanation:

Given the following data;

Mass = 30.45 g

Specific heat capacity = 4.18 J/g °C.

Temperature = 3.3°C

To find the quantity of heat;

Heat capacity is given by the formula;

[tex] Q = mct [/tex]

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

t represents the temperature.

Substituting into the equation, we have;

[tex] Q = 30.45 * 4.18 * 3.3 [/tex]

Q = 420.03 ≈ 420 Joules

Answer:

true

Explanation:

Answer:

Explanation:

A. True

Answer:

Explanation:

PE = m * g * h

m = 200 kg

h = 1000 m

g = 9.81

PE = 200 * 9.81 * 1000

PE = 1962000 Joules

Answer:

If you want to see something in the distance, you can use two convex lenses, placed one in front of the other. The first lens catches light rays from the distant object and makes a focused image a short distance behind the lens. This lens is called the objective, because it's nearest to the object you're looking at.

The radioactive decay is shown in the image attached to this answer

Answer:

Alpha

Explanation:

An alpha decay is said to have occurred when the mass number of the daughter nucleus decreases by four units and the atomic number of the daughter nucleus decreases by two units.

If we look at the equation from left to right, we will notice that the mass number of the daughter nucleus decreased by four units and the atomic of the daughter nucleus number by two units compared to that of the parent nucleus leading to the emission of an alpha particle.

Answer:

34kg

Explanation:

Answer:

Recessive alleles only show their effect if the individual has two copies of the allele.  

Explanation:

Dominant and Recessive Alleles If your allele pair is FF or Ff, you will have freckles. The only way you can escape a freckled face is to inherit the recessive gene from each parent, giving you the ff allele pair. In general, recessive alleles show up in your phenotype only if you have two of them.

Answer:

Option C

Explanation:

Given

Pressure = Force /Area

For any gas sample, force is defined as basically the force exerted by the gas molecules when they strike the surface (with in which they are contained) and bounce back.

Hence, Option C is the correct

Answer:

Greatest gravitational energy is at "C".

The planet has to do work "against" the field to get to "C".

Also, if m v R (angular momentum) is constant then as R increases v must decrease for this term to be constant and KE = 1/2 M v^2  must decrease also to get to point C.

Answer:

100%

Explanation:

Father - EE

Mother - Ee

Answer:A third type of subatomic particle, electrons, move around the nucleus. The electrons have a negative electrical charge. An atom usually contains an equal number of positively charged protons and negatively charged electrons.

Explanation:

Answer:

A force pump can be used to raise water by a height of more than 10m, the maximum height allowed by atmospheric pressure using a common lift pump.

In a force pump, the upstroke of the piston draws water, through an inlet valve, into the cylinder. On the downstroke, the water is discharged, through an outlet valve, into the outlet pipe.

./././././././././././././././././././.

it's on the screenshot, apparently it was inappropitae so i couldnt submit it here

Answer:

Alpha decay

Explanation:

Answer:

C

Explanation:

Alpha Decay

Answer:

W = 439998 J = 439.99 KJ

Explanation:

First, we will calculate the acceleration of the car by using the first equation of motion:

[tex]v_f = v_i + at\\\\a = \frac{v_f-v_i}{t}[/tex]

where,

a = acceleration = ?

vf = final speed = [tex]108(\frac{km}{h})(\frac{1000\ m}{1\ km})(\frac{1\ h}{3600\ s})[/tex] = 30 m/s

vi = initial speed = [tex]36(\frac{km}{h})(\frac{1000\ m}{1\ km})(\frac{1\ h}{3600\ s})[/tex] = 10 m/s

t = time = 30 s

Therefore,

[tex]a = \frac{30\ m/s - 10\ m/s}{30\ s}[/tex]

a = 0.67 m/s²

Now, we will calculate the force applied by the engine:

F = ma

where,

F = force = ?

m = mass = 1100 kg

Therefore,

F = (1100 kg)(0.67 m/s²)

F = 733.3 N

Now, we will calculate the distance covered by the car by using the second equation of motion:

[tex]s = v_it+\frac{1}{2}at^2\\\\s = (10\ m/s)(30\ s)+\frac{1}{2} (0.67\ m/s^2)(30\ s)^2[/tex]

s = 600 m

Now, the work done (W) by engine can be calculated as follows:

W = Fs

W = (733.3 N)(600 m)

W = 439998 J = 439.99 KJ

Answer:

Amount of work done by Joanne = 80 joule

Explanation:

Given:

Displacement of ball = 2 meters

Force applied = 40 newtons

Find:

Amount of work done by Joanne

Computation;

Work done = Force applied x Displacement

Amount of work done by Joanne = Force applied x Displacement of ball

Amount of work done by Joanne = 40 x 2

Amount of work done by Joanne = 80 joule

Answer: ITS T

Explanation:

In a motor, electrical current enters through the brushes. TRUE.

Answer:

All living organisms store genetic information using the same molecules DNA and RNA. Genes are maintained over an organism's evolution, however, genes can also be exchanged or "stolen" from other organisms.

The resistors [tex]R_1 and R_2 [/tex]are in series connection, so the equivalent resistance of [tex]R_1 and R_2[/tex] will be their sum.

[tex] \boxed{ \mathrm{R_t = R_1 + R_2}}[/tex]

Now, the equivalent resistance of [tex](R_1 and R_2)[/tex] and [tex]R_3 [/tex] is the total resistance of the circuit, and since they are in parallel connection, Total resistance :

_____________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

Answer:

La velocidad que tendrá el móvil cuando hayan transcurrido 2 minutos es 200 m/s.

El espacio que habrá recorrido el móvil durante 2 minutos es 13200 metros.

Explanation:

El movimiento rectilíneo uniformemente variado o MRUV es un movimiento que ocurre sobre una línea recta con aceleración constante. En otras palabras, un cuerpo realiza un  movimiento rectilíneo uniformemente variado cuando su trayectoria es una línea recta y su aceleración es constante y distinta de 0. Esto implica que la velocidad aumenta o disminuye su módulo de manera uniforme.

La velocidad que tendrá un móvil luego de un tiempo t será:

v= v0 + a*t

donde v0 es la velocidad inicial y a es la aceleración.

En este caso v0= 20 m/s, a=1,5 m/s² y t=2 minutos= 120 segundos. Reemplazando y resolviendo se obtiene:

v= 20 m/s + 1.5 m/s²* 120 segundos

v= 200 m/s

La velocidad que tendrá el móvil cuando hayan transcurrido 2 minutos es 200 m/s.

La expresión de la  posición en función del tiempo para el movimiento uniformemente variado es:

x= x0 + v0*t + [tex]\frac{1}{2}[/tex] *a*t²

donde x0 es la posición inicial, v0 es la velocidad inicial y a es la aceleración.

En este caso x0= 0 m, v0= 20 m/s, a=1,5 m/s² y t=2 minutos= 120 segundos. Reemplazando y resolviendo se obtiene:

x= 20 m/s* 120 s +  [tex]\frac{1}{2}[/tex] * 1.5 m/s² *(120 s)²

x= 2400 m + 10800 m

x= 13200 m

El espacio que habrá recorrido el móvil durante 2 minutos es 13200 metros.

Answer:

an alchemy is

the medieval forerunner of chemistry, concerned with the transmutation of matter, in particular with attempts to convert base metals into gold or find a universal elixir.

B. Lead is a conductor....