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STatiana [176]
2 years ago
10

Large telescopes have revealed information about the motions of stars. They helped scientists realize that most stars and galaxi

es are accelerating away from one another. This led scientists to begin to develop the big bang theory. This new theory explained that the universe began as an enormous explosion outward from a single point. The work described in the passage is part of which process used in developing scientific theories? O A. Using observations to spark an idea O B. Using data to develop new technology C. Using imagination to modify existing technology D. Using new technology to modify an existing theory. PLEASE I NEED HELP!!!!
​
Chemistry
1 answer:
fiasKO [112]2 years ago
5 0

Answer:b

Explanation:sorry if I’m wrong

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En una estructura de concreto cuyo peso es de 8500 n se apoyo sobre un area de 25cm2,hallar la presion ejercida sobre su base
babymother [125]

Respuesta:

340 N/cm²

Explicación:

Paso 1: Información provista

Peso de la estructura (F): 8500 Newton

Area superficial (A): 25 cm²

Paso 2: Calcular la presión (P) ejercida por la estructura de concreto sobre su base

La presión es igual al cociente entre la fuerza ejercida y la superficie sobre la que se aplica.

P = F/A

P = 8500 N / 25 cm² = 340 N/cm²

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The correct answer is B. Chewing in the mouth breaks food into small pieces.

Explanation:

In physical changes, substances do not change their chemical composition or properties but only physical features such as this. This occurs during the chewing because the action of chewing only makes food to be broken down in smaller pieces but does not change its identity, composition, or properties. This does not occur once the food is in contact with saliva, the acid in the stomach, etc. because in these cases, the food reacts with other substances and a chemical reaction occurs, which changes food's identity and composition.

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that will be endothermic reaction...... as oxides of mercury decomposes and break s into simpler elements by absorbing energy

Explanation:

hope it helped u buddy

6 0
2 years ago
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