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3 years ago

8

Andy has two samples of liquids. Sample A has a pH of 4, and sample B has a pH of 6. What can Andy conclude about these two samp

les?
Sample A is
, and sample B is

1 answer:

kodGreya [7K]3 years ago

8 0

Sample a is an acid. Ex. Acid rain
Sample b is very weak acid , almost neutral ex. Milk.

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how does the image distance (the distance from the lens to the focused image) change with the object distance (the distance from

julsineya [31]

The image distance (the distance from the lens to the focused image) change with the object distance (the distance from object to the lens) due to the lens formula.

Lens formula is defined as the relationship between object distance (u), image-distance (v) and the focal length (f). Following is the mathematical representation of lens formula:

Lens Formula : 1/f = 1/v - 1/u

Where f = focal length

v = image distance

u = object distance

The lens is a transparent material which is bound by two surfaces. It has a principal axis, principal focus, centre of curvature of lens, aperture and optical centre.
The images obtained from these lenses can be either a real image or a virtual image.

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1 year ago

An object with a mass of 2.0 kg is accelerated at 5.0 m/s/s. the net force acting on the mass is

Vitek1552 [10]

First we need to know the equation:
F= Mass times acceleration
F = 2.0 kg times 5.0 m/s^2
multiply them to get the net force!
F= 10 N
N is newton
Hope this heps

7 0

4 years ago

Read 2 more answers

Who discovered the basic laws of planetary orbits?.

Phoenix [80]

Answer:

kepler

Explanation:

While Copernicus rightly observed that the planets revolve around the Sun, it was Kepler who correctly defined their orbits. At the age of 27, Kepler became the assistant of a wealthy astronomer, Tycho Brahe, who asked him to define the orbital mars

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2 years ago

MELAINE complete a long distance run at the average speed of 60 mph if it takes her 3 hours how far did she Run

shutvik [7]

Answer:

Explanation:

180mile/hour

7 0

3 years ago

Un movil de masa 12Kg sobre el cual estan actuando varias fuerzas F_1=48N, F_2=60N y F_3=30N Calcular la aceleracion con la cual

Nikitich [7]

Answer:

Lamentablemente el problema está incompleto, pues no sabemos la dirección en la que se aplican las fuerzas. Por ello, voy a resolver el problema asumiendo dos casos. (abajo se puede ver una imagen donde se describe cada caso)

1) Todas las fuerzas están en la misma dirección.

Entonces la fuerza neta será la suma de las 3 fuerzas, entonces:

F = 48N + 60N + 30N = 138N

Y por la segunda ley de Newton sabemos que:

F = m*a

fuerza igual a masa por aceleración.

Entonces la aceleración está dada por:

a = F/m = 138N/12kg = 11.5 m/s^2

2) Segundo caso, suponemos que F1 es opuesta a F2 y F3

En este caso, la fuerza neta será:

F = F2 + F3 - F1 = 60N + 30N - 48N = 42N

En este caso, la aceleración será:

a = 42N/12kg = 3.5 m/s^2

7 0

3 years ago