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kolbaska11 [484]
2 years ago
10

Help! DOWN BELOW NO SCAM PLEASE

Physics
2 answers:
KiRa [710]2 years ago
8 0

Answer:

C, 4.5 billion years ago, i think

Explanation:

Alex73 [517]2 years ago
5 0
Definitely C.

Hope that helps! :)
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Which of the following group 7A elements is the most reactive?
nevsk [136]
Among the elements in group 7A, the most reactive would be Fluorine. Fluorine is a major component of toothpaste, what we use to brush and clean our teeth with. It is so reactive that it cannot be contained in glass.
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4 years ago
5 aplicaciones de la fuerza en tu vida cotidiana
Andrews [41]

Answer:

La fuerza es la causa que provoca cualquier cambio en el movimiento o la geometría de los cuerpos. Un cuerpo puede aceptar muchas fuerzas al mismo tiempo, cuyo resultado será en cada punto una fuerza recomendada y un par recomendado. Cuando estas fuerzas se neutralizan entre sí, se dice que el cuerpo está en un estado de equilibrio.

En lo que respecta a los cuerpos libres, la fuerza es generalmente la causa de un cambio en su estado cinético, es decir, que los acelera o ralentiza. Esto también se aplica a su rotación, que puede acelerarse o desacelerarse. Para los cuerpos que no son libres de moverse en todas las formas, es decir, aquellos que están suspendidos en algún lugar y solo pueden moverse alrededor de un punto o eje o en una trayectoria predeterminada, así como aquellos que aplican fuerzas de fricción o reacciones generales de apoyo, nosotros reducir las fuerzas en puntos característicos. En el caso de los cuerpos no libres, la fuerza es la causa que provoca su movimiento o movilidad en relación con sus puntos de apoyo o conexión, o la que provoca su intenso estado, presión o deformación. La inercia de un cuerpo libre también permite que el cuerpo se someta a una tensión, presión o deformación intensas cuando se le aplican las fuerzas correspondientes.

4 0
3 years ago
A six pack of your favorite beverage (12 fl. oz. cans, assumed to have the same characteristics as water) is placed in a cooler
nasty-shy [4]

Answer:

Q = 169 BTU

Explanation:

As we know that volume is given as

V = 12 Fl oz

so it is given in liter as

V = 12 fl oz = 0.355 Ltr

now we have six pack of such volume

so total volume is given as

V = 6\times 0.355 Ltr

V = 2.13 ltr

so its mass is given as

m = 2.13 kg

now the change in temperature is given as

\Delta T = 70 - 34 = 36 ^oF

\Delta T = 20^oC

now the heat given to the liquid is given as

Q = ms\Delta T

Q = 2.13(4186)(20)

Q = 1.78 \times 10^5 J

Q = 169 BTU

4 0
3 years ago
The weight of a girl with a mass of 40.0 kg is_N
faltersainse [42]

Answer: The weight of a girl with a mass of 40kg is 392.266 Newtons.

Explanation:

5 0
3 years ago
Find the de broglie wavelength of an electron in the ground state of the hydrogen atom.
HACTEHA [7]

de Broglie wavelength (λ) is given by the equation

λ = h/p

where h=Planck’s constant whose value is 6.62 x 10^(−34) joule-seconds and

p = momentum of the particle(here electron)

In terms of kinetic energy(E) momentum(p) can be written as,

p=(2mE)^1/2

where m=mass of the particle.

Hence λ becomes

1 λ = h(2mE)^-1/2

Given here, E = 13.6 eV = 13.6×1.6×10^-19 joule

m(mass of electron)= 9.1×10^-31 kg

Putting these values in equation (1) we get ,

λ =0.332×10^(-9) meter

=3.32×10^(-10) meter

=3.32 Å

5 0
3 years ago
Read 2 more answers
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