What was the commonality between Becquerel and the Curies in terms of their work? polonium radium uranium cesium
Answer:
uranium
Explanation:
Answer:
it is c on edge 2021
Explanation:
What were the densities of the materials you chose for the walls and floor for the home in Tiny World?
Answer:
Explanation:
The answer is clay brick
Explanation: the clay brick keeps it cooler also it keeps it firm.
Hope this helps :)
what is common to nuclear fission?
Answer:
235 U ( the isotope of uranium with mass number 235) and 239Pu(the isotope of plutonium with mass number 239
Explanation:
mmmmmmmmm
Star in the prime of its life, middle-aged
Answer:
I agree :)
Explanation:
Answer:
Stellar evolution is the process by which a star changes over the course of time. Depending on the mass of the star, its lifetime can range from a few million ... All stars are formed from collapsing clouds of gas and dust,
Explanation:
What force opposes gravity and keeps objects from falling to the center of
the earth?
La fuerza de la gravedad depende de la masa (el peso) de cada objeto. La fuerza con que se atraen dos objetos es proporcional a su masa y disminuye rápidamente en el momento en que los separamos. De hecho, nosotros también atraemos objetos con ‘nuestra’ fuerza gravitatoria, pero pesamos tan poco que no podemos percibirlo. En cambio, el Sol es tan grande que es capaz de mantenernos girando a su alrededor a pesar de estar muy lejos. La Luna también ejerce su propia fuerza gravitatoria, pero, como es más pequeña y ligera que la Tierra, si nos pesásemos sobre su superficie veríamos que pesamos unas seis veces menos que en la Tierra.
Podríamos preguntarnos por qué la Luna no cae sobre la Tierra al igual que una manzana cae del árbol. La razón es que nuestro satélite nunca está quieto. Se mueve constantemente a nuestro alrededor. Sin la fuerza de atracción terrestre, se alejaría flotando en el espacio. Gracias a esta combinación de velocidad y distancia de nuestro planeta, la Luna siempre está en equilibrio, ni cae ni se aleja. Si se moviera más rápido, se alejaría, si se moviera con más lentitud, ¡caería!
Hemos dicho que la fuerza de la gravedad también depende de la distancia. Si nos alejásemos lo suficiente de la Tierra, escaparíamos a su fuerza de atracción. Y eso es lo que tratamos de hacer con las naves espaciales. Necesitamos superar la llamada ‘velocidad de escape’, que es aproximadamente 11,2 km/s (a esa velocidad, podríamos viajar de Londres a Nueva York ¡en tan solo 10 minutos!). Cuando un cohete alcanza esa velocidad, ya es libre para viajar por el sistema solar.
Dentro de una nave en órbita, no sentimos la fuerza de la gravedad terrestre. Los objetos no caen, sino que flotan, así que si saltas, no regresas al suelo. Es lo que les ocurre a los astronautas cuando están a bordo de una estación espacial que orbita alrededor de la Tierra.
are Molecules are large atoms
Answer:
no molecules are very small atoms
Which of the following statements is true?
Plasma can be found in lightning and stars.
Liquids have a fixed shape but a variable volume.
Bose-Einstein condensates form at very high temperatures.
All of the above.
Answer:
Plasma can be found in lightning and stars.
Explanation:
Plasma is a state of matter that lacks a fixed volume and a fixed shape and consists of charged particles called ions. The sun and other stars consist of plasma. Plasma is also found naturally in lightning and the northern and southern lights.
The true statement is: Plasma can be found in lightning and stars and the correct option is option 1.
Plasma is the fourth state of matter, distinct from solid, liquid, and gas. It is an ionized gas consisting of a mixture of positively charged ions and free electrons. In this state, atoms have lost some of their electrons due to high temperatures or strong electromagnetic fields. This creates a highly conductive and energetic environment where particles move freely and interact with electromagnetic forces.
Plasma is commonly found in high-temperature environments like stars, lightning, and fluorescent light tubes. It also plays a crucial role in various industrial and technological applications, such as plasma TVs, fusion reactors, and certain medical treatments.
Thus, the ideal selection is option 1.
Learn more about Plasma, here:
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The human body has four types of tissues, and the eye contains all four. Which statement correctly pairs the part of the eye
with the tissue type? (1 point)
Epithelial tissue is found in the sclera, the white part of the eye.
Muscle tissue is found in the iris, the colored part of the eye.
O Connective tissue is found in the comea, the outermost lens of the eye.
Nerve tissue is found in the retina, the rods and cones at the back of the eye.
Answer:
The correct answer is D) Nerve tissue is found in the retina, the rods and cones at the back of the eye.
Explanation:
The rods and cones are photoreceptors (that is nerve cells within the eyes that can sense light) which is situated in the retina.
These photoreceptors also sense colours and send these signals into the optic nerve for transmission to the brain.
Cheers
Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of the atom, but they are not in the correct order. An image at the left labeled W with overlapping red and blue balls in the center with a circular fuzzy green cloud outside them. An image at center-left labeled X with a purple ball in the center surrounded by overlapping concentric black ovals, each with a small green ball on each of the 6 ovals. An image at center right labeled Y with a large black cross in a purple circle with a black line around the purple, with 10 small green balls dispersed within the purple circle. An image at right labeled Z with a purple center outlined in black with two concentric black circles around the center, the inner circle having 2 small green balls on it and the outer circle having 8 small green balls on it. In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one? A. Y, X, Z, W B. Y, Z, W, X C. W, Z, X, Y D. W, Y, Z, X
Answer:
the answer is A. Y, X, Z, W
Explanation:
I took the test
Answer:
a, y, x, z, w
Explanation:
Explanation:
Which of the following energy forms is associated with an object due to its position?
Group of answer choices
positional energy
potential energy
total energy
kinetic energy
Answer:
Potential Energy
Explanation:
If an object is suspended on a high level, it has high gravitational potential energy because it may fall at any moment
An increase in pressure increasing the boiling point of a liquid is an example of a —
A physical change
B chemical change
C physical property
D chemical property
Answer:
Ans. C. physical change
Explanation:
Physical: boiling and melting are physical changes. When water boils no bonds are broken or formed
Boiling point refers to the temperature at which the pressure of the liquid (that is being boiled) becomes equal to its surrounding pressure which causes it to change to vapor.
Physical change refers to the changes that occur when the material that is changed is structurally similar both before and after the change.Chemical change occurs when the material is transformed into a different chemical substance.Physical property of a substance refers to those properties of a substance that are measurable and describes the state of a physical system.Chemical property refers to the property of a substance that is observed in a chemical reaction.The increase in pressure with boiling point is an example of the physical property as it shows the physical state of the system.
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On July 8th, I will be 8.51472x10^8 seconds old. How old will I be in years? (Assume 365 days in a year.) Group of answer choices
Answer:
26.98
almost 27 years
When you hold a container, where should the label be?
Answer:
On the outside or something like that
Can someone please help me, Ty!
The Coronavirus invades 2 types of cells in the lungs, mucus cells and __________.
cilia cells
air cells
blood cells
breathing cells
Answer:
cilia cells
Explanation:
What is the broadest taxon in the modern classification
system?
a Phylum
b Order
C Kingdom
D domain?
which is heavier gold (Au) or Silver (Ag)
Answer: Gold
Explanation: gold has a density of 19.32 g/cm3 where silver has a density of only 10.49 g/cm3
A student reports the density of an article to be 1.92 g/mL. The accepted value of density is 1.89 g/mL. Calculate the student's percent error.
Answer:
1.59%.
Explanation:
The following data were obtained from the question:
Measured density = 1.92 g/mL
Accepted density = 1.89 g/mL
Percentage error =...?
The percentage error error of the student can be obtained as follow:
Percentage error = |Measured density – Accepted density |/Accepted density × 100
Percentage error = |1.92 – 1.89|/1.89 × 100
Percentage error = 0.03/1.89 × 100
Percentage error = 1.59%
Therefore, the student percentage error is 1.59%
Balance the equation by filling in the coefficients.
o C₂HG+
O2-0 CO₂ + H₂O
Answer:
4CHO + 3O2 → 4CO2 + 2H2O
Explanation:
4CHO + 3O2 → 4CO2 + 2H2O
Not sure how to explain but I hope this helps :)
Which statement describes one feature of Rutherford’s model of the atom?
Answer:
an atom mainly consists of empty space around the nucleus
Explanation:
Answer:
The atom is mostly empty space
Explanation:
E2020
what can corrosive do to skin
Explanation:
acid
................
Answer :
Corrosive can causes severe damage to the skin. It can result in a chemical burn Skin scarring Some corrosives can eat flesh
What are the units for measuring the mass of a regular object?
Answer:
Mass is used to measure the weight of an object. For example, you are measuring the mass of your body when you step on to a scale. In the metric system of measurement, the most common units of mass are the gram and kilogram.
Explanation:
It is 762 miles from here to Chicago. An obese physics teacher jogs at a rate of 5.0 miles every 20.0 minutes. How long would it take him to jog to Chicago if he jogged continuously and REALLY wanted to get there?
Answer:
3,048 minutes
Explanation:
762 divided by 5
that number times 20
The time required for a physics teacher to jog continuously and REALLY wanted to get there will be 50 hours and 48 minutes.
What is speed?The distance covered by the particle or the body in an hour is called speed. It is a scalar quantity. It is the ratio of distance to time.
We know that the speed formula
Speed = Distance/Time
It is 762 miles from here to Chicago. An obese physics teacher jogs at a rate of 5.0 miles every 20.0 minutes.
Then the speed of the physics teacher will be
Speed = 5 / (20 / 60)
Speed = 15 miles per hour
The time required for a physics teacher to jog continuously and REALLY wanted to get there will be
15 = 762 / T
T = 762 / 15
T = 50.8 hours
T = 50 hours and 48 minutes
The time required for a physics teacher to jog continuously and REALLY wanted to get there will be 50 hours and 48 minutes.
More about the speed link is given below.
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Give an example of a specialized cell
Answer:
nerve cells, blood cells, and reproductive cells would all be examples
Please help ASAP pleas help right answer please
Your mass is the amount of matter or “stuff” in your body. How would your mass on the moon compare to your mass on earth? A. Greater on the moon. B. Less on the moon. C. Same on earth and moon.
B. Less on the moon.
Mass and WeightAn object's mass is a measure of its inertial property, or the quantity of matter it contains.The weight of an object is a measure of the force imposed by gravity on the object, or the force required to support it.As the moon's gravitational force is roughly one-sixth that of the Earth's, one's weight on the moon would be roughly one-sixth that of the Earth.Mass is the amount of matter or “stuff” in the body. One's mass is B. Less on the moon.For more information:
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Jack walks outside in the afternoon and noticed the clouds are very dark. He states that it looks like it will rain very soon. His statement can be classified as A) prediction B) observation C) inference D) hypothesis
Answer:
I think it would be A but it might be B please tell if wrong
Answer:
A prediction
Explanation:
A prediction, or forecast, is a statement about a future event. They are often, but not always, based upon experience or knowledge and jack is using his knowledge on clouds to predict when it is going to rain.
Which stage of the scientific process enables a scientist to check the work of other
scientists?
classifying
O concluding
hypothesizing
O communicating
Answer:
The answer to this would be communicating.
Explanation:
A scientist would be communicating to his or her fellow colleagues and sharing to them his or her idea.
Hope you find this answer helpful! :)
Answer:
Communicating
Explanation:
What are characteristics of reliable science?
A. Bias and controlled variables .
B. Controlled variables and small test groups.
C. Empirical data and bias .
D. Replicable results and empirical data .
Answer:
Replicable results and empirical data.
Explanation:
Answer:
D
Explanation:
Replicable results mean that the question or test can be replicated to prove the subject in manner. Empirical data means that the question or test can be resolved with the same data, so for example, if a chemist discovers a new chemical equation, they need to write down the formula.
Which statement is a conclusion?
O A Floriste put cut flowers in eugar water, so flowers in sugar water
stay fresh longer
B. Cut flowers placed in sugar water stay fresh longer than flowers
placed in regular water.
C. It's better to give people balloons than cut flowers that will die.
D. How can cut flowers stay fresh for a longer period of time?
What is the answer
Answer:
Explanation:
B. Cut flowers placed in sugar water stay fresh longer than flowers
placed in regular water.
Answer:
B
Explanation:
Just got question right on quiz!!! <3
