Answers
Answer:
B
Explanation:
There is no new substances formed in choice B
Answer:
the answer is B. boiling of water, bursting of a balloon, crumpling a piece of paper.
Related Questions
during a hard sneeze your eyes might shut for .50s. if you are driving a car at 70 mi/hr during such a sneeze, how far does the car move during that time
Answers
Answer:
About 50 ft.
Explanation:
There is a danger any time you take your eyes off the road. There is also a danger of distraction before and after a sneeze.
Hoped this helped!! <3
A robin is flying around and its velocity vvv as a function of time ttt is given in the graph below where rightwards is the positive velocity direction. What is the robin's displacement \Delta xΔxdelta, x from t=0\,\text st=0st, equals, 0, start text, s, end text to 1.5\,\text s1.5s1, point, 5, start text, s, end text?
Answers
Answer:
-0.75
Explanation:
Khan Academy gives answer here.
Convert 76.2 picograms to kilograms.
Answers
Answer:
7.62e-14
Have a nice day! :)
Which is required for convection to occur?
a solid substance
a heat source
boiling water
air molecules
Answers
The most important factor for convection to occur is heat.
What is heat transfer by convection?
Convection is a method of heat transfer that involves the movement of fluid from hot region to cold region.
Heat transfer processes by convection is dominant in liquids and gases.
Therefore, we can conclude that the most important factor for convection to occur is heat, because the heat must flow from hot region to cold region through fluid movement.
Learn more about convection heat transfer here: https://brainly.com/question/893656
Answer:
B
Explanation:
a heat source
What is the difference between physical and chemical changes?
Answers
Answer:
A
Explanation:
Chemical is a reaction between 2 things signs of that would be a new color, a new substance formed, or any sign of bubbles/smoke etc. while physical changes are done on purpose such as ripping a paper or cutting a log in half! hope that helped
Planet Earth belongs in a spiral-shaped galaxy known as the Milky Way. True False
Answers
The atomic number of cobalt is 27 and its mass number is 58.93. How many protons and neutrons does an atom of cobalt have?
Answers
Answer:
27 protons, and 32 neutrons.
The atomic number of cobalt is 27 and its mass number is 58.93. Number of protons and neutrons does an atom of cobalt have 27 protons, and 32 neutrons.
What is mass?
In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force. The change caused by an applied force is smaller the more mass a body has.
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom.
rest mass of one proton 1.67262 × 10−27 kg
rest mass of one neutron 1.674*10-27 kg.
The atomic number of cobalt is 27 and its mass number is 58.93. Number of protons and neutrons does an atom of cobalt have 27 protons, and 32 neutrons.
To learn more about mass refer to the link:
brainly.com/question/19694949
#SPJ6
The mass is 2.0 kg. If the net force is 10.0 N, what is the acceleration?
Answers
Answer:
36.165 ft/s^2
Explanation:
Omnicalculator
Given the force exerted on the object with the given mass, the acceleration of the object is 5m/s².
Given the data in the question;
Mass; [tex]m = 2.0kg[/tex]Net Force; [tex]F = 10.0N[/tex]Acceleration; [tex]a =\ ?[/tex]
To determine the acceleration of the mass, we use Newton Second Law of Motion:
[tex]F = m * a[/tex]
Where m is mass of the object and a is the acceleration.
We substitute our given values into the equation and solve for "a"
[tex]10.0N = 2.0kg * a\\\\10.0kg.m/s^2 = 2.0kg * a\\\\a = \frac{ 10.0kg.m/s^2}{2.0kg}\\\\a = 5m/s^2[/tex]
Therefore, given the force exerted on the object with the given mass, the acceleration of the object is 5m/s².
Learn more: https://brainly.com/question/13447525
calculate the resistance of a 1 m long wire of diameter 0.3mm
Answers
Then resistance = (resistivity x length ) / cross sectional area
A 5,000 kg truck moving at 8 m/s has the same momentum as a 2,500 kg car. What is the velocity of the car?
Answers
Answer:
16 m/s.
Explanation:
The following data were obtained from the question:
Mass of truck = 5000 Kg
Velocity of truck = 8 m/s
Mass of car = 2500 kg
Velocity of car =..?
Next, we shall determine the momentum of the truck. This can be obtained as follow:
Mass of truck = 5000 Kg
Velocity of truck = 8 m/s
Momentum of truck =.?
Momentum = mass × velocity
Momentum = 5000 × 8
Momentum of the truck = 40000 Kg.m/s
Finally, we shall determine the velocity of the car as follow:
From the question given above, we were told that the car and truck has the same momentum.
This implies that:
Momentum of the truck = momentum of car = 40000 Kg.m/s
Thus, the velocity of the car can be obtained as shown below:
Mass of car = 2500 kg
Momentum of the car = 40000 Kg.m/s
Velocity of car =..?
Momentum = mass × velocity
40000 = 2500 × velocity
Divide both side by 2500
Velocity = 40000/2500
Velocity = 16 m/s
Therefore, the velocity of the car is 16 m/s.
100 POINTS ANSWER FAST PLS
When you are presented with information that is claiming to be scientifically proven, take a careful look at the information and ask yourself the following questions.
Has it been tested and observed numerous times by more than one group of scientists?
Is the study or data documented completely, and does it follow the scientific method?
Does the information contain just the facts and avoid mixing in opinion and assumption?
Is the information presented purely for public knowledge, avoiding being connected with a new product that is for sale?
Does the information come from a third party that is not profiting from the results of the study?
Is this information supported by any other studies that have been conducted by other companies or agencies?
Answers
2. Who was the first person to"measure gravity?" (Hint: By "measuring gravity, we mean
"measuring the acceleration due to gravity.)
Answers
Answer:
The first person to "measure gravity" is sir Issac newton
what would happen to a solar system if gravity suddenly stopped working ?
Answers
Answer:
Explanation:
heres ya awnser pal Without gravity, everything on the surface of the Earth will start floating off. ... After all it's being held down only by gravity. On Earth or any planet with water, the seas and oceans will start floating off into space as well, complete with some very confused sea life. (Only corals and anemone would hang around).Mar 14, 2016
Answer:
WHAT THE OTHER GUY SAID
Explanation:
There are many forms of energy. All energy falls into one of two categories, either potential or kinetic energy. A Newton's Cradle, with the pendulums at different points along its path, involves kinetic energy being transformed into potential energy. Use scientific reasoning to explain in detail how the kinetic is transformed into potential energy in the Newton's Cradle example. Be sure to explain the differences and similarities between kinetic and potential energy in your response.
Answers
Answer:
no motion
Explanation:
kinetic energy transformed to potential energy when no movement or motion..potential is more on gravity
What is extensive physical property of matter
PLEASE PLEASE HELP ME
Answers
Answer:
your mom
Explanation:
An extensive property is a physical quantity whose value is proportional to the size of the system it describes, or to the quantity of matter in the system. For example, the mass of a sample is an extensive quantity; it depends on the amount of substance.
sorry for the your mom joke but I had to do it
ured length. Measurement errors are another type of uncertainty involved in single measurements. Suppose we measure the diameter of a disk. The minimum length that can be measured on the stick is 1 mm (0.1 cm). If the diameter lies somewhere between 5.1 cm and 5.2 cm, which value do we report? In such cases the value is reported as 5.15 ± 0.05 cm. Note that the uncertainty of the measurement is one half the smallest tick mark on the measuring device. This applies to all instruments. A sound experimental procedure involves several measurements of the physical quantities required in one of several ways. Once those measurements have been made, we compute the statistical quantities listed in the key concepts above to make inferences from the data obtained. Question 1 (write down answers on Report Sheets) Below are three sets of measurements of the boiling point of water at 1 standard atmosphere (atm): Measurement 1 2 3 4 5 Set A 99.8 °C 99.8 °C 99.8 °C 99.8 °C 99.8 °C Set B 100.0
Answers
Answer:
T = (99.78 ±0.05) ºC
Explanation:
This problem refers to the procedure to perform the measurements and their correct reporting.
Suppose that the thermometer used has an appreciation of 0.1ºC and the values of 5 measurements resulted in
# T (ºC)
1 99.8
2 99.7
3 99.7
4 99.8
5 99.9
the processing calculate mean value
T_average = ∑ [tex]T_{i}[/tex] / n
T_average = (99.8 + 99.7 + 99.7 + 99.8 + 99.9) / 5
T_average = 99.78ºC
the absolute error or uncertainty of the measurement is half the appreciation of the instrument
ΔT = ± 0.05ºC
so the result must be written
T = (99.78 ±0.05) ºC
A motorbike accelerates with a force of 15000N. It experiences air resistance which acts in the opposite direction with a magnitude of 1200N. Calculate the unbalanced force that is acting on the motorbike.
Answers
Answer:
13800N
Explanation:
15000N is the force of motorbike
1200N is air resistance in opposite direction
15000N-1200N=13800N
Answer:
Ft = 13800 [N]
Explanation:
We have to carry out a force analysis and assume the directions of those forces. First the force that causes the movement of the rider is equal to 15000 [N] and is directed to the right. Since the resistance of the air is opposite to the movement, it generates a resistance with a value of 1200 [N], with direction to the left. However, the rider continues to move to the right, as the force generated by the bike is greater, i.e. this force must be to the right for movement to exist. By means of a summation of forces on the X axis we can calculate the value of the resulting force. The forces to the right will be taken with a positive sign and the forces to the left with a negative sign.
15000 - 1200 = Ft
where:
Ft = unbalanced force [N]
Ft = 13800 [N]
which part of an atom has a negutive charge ?
A. nucleus
B. electrons
C. Proton
D. Neutron
Answers
Answer: electrons
The part of an atom that has a negative charge are electrons. They float around the nucleus at a very fast speed. No one knows how quick they can travel. The answer is electrons.
Hope this helps you!
Answer:
Electrons
Explanation:
Electrons always have a negative charge.
if you have a density of 15 g/mL and a mass of 5 g what is the volume in decimal form
Answers
Answer:
The answer is 0.33 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\[/tex]
From the question
mass = 5 g
density = 15 g/ml
We have
[tex]volume = \frac{5}{15} = \frac{1}{3} \\ = 0.333333[/tex]
We have the final answer as
0.33 mLHope this helps you
A cannon shoots a cannonball from ground level at an angle of 60 degrees from the ground with a total velocity of 25 m/s. solve for the time it takes for the ball to hit the ground.
Answers
Which statements describe the motion of car A and car B? Check all that apply. Car A and car B are both moving toward the origin. Car A and car B are moving in opposite directions. Car A is moving faster than car B. Car A and car B started at the same location. Car A started ahead of car B.
Answers
Answer:
✔️Car A and Car B are moving in opposite directions.
✔️Car A is moving faster than Car B.
✔️Car A started ahead of car B.
Explanation:
The position-time graph shows Car A and Car B. The graph reveals that both cars are moving in opposite directions.
Car A shows a positive slope and Car B shows a negative slope.
The graph also shows that Car A started ahead of Car B. It's seen from the graph that Car A started from the origin.
Therefore, we conclude that the correct statements are:
✔️Car A and Car B are moving in opposite directions.
✔️Car A is moving faster than Car B.
✔️Car A started ahead of car B.
Answer:
merry cristmas the other person answered right I checked for you
Explanation:
happy NEW YEARS FINALLY NO MORE 2020
why do place on earth receives different amounts of sunlight
Answers
Answer:
Because of earth's tilt
Explanation:
Answer:
Different parts of Earth's surface receive different amounts of sunlight. ... Because of the Earth's tilt the sun's rays strike the surface at a slant at the poles; they are less focused. This spreads the rays over a wide area. Because the sun's rays hit at a slant, the area is heated less.
Explanation:
From Google
Can I have brainliest
what is cell function
Answers
Answer:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
Explanation:
how the kinetic is transformed into potential energy in the Newton's Cradle example
Answers
Answer:
for example,lets say we lift the ball on one end up a certain height and then release it when the ball falls and strikes the next ball beside it,it transfer its kenitic energy to it.
Answer:
See the explanation below
Explanation:
The principle of Energy Conservation tells us that energy is transformed from kinetics to potential and vice versa. That is, the potential energy is transformed from potential to Kinetics as the height of the body decreases with respect to a reference level (level where the potential energy is zero), but as the potential energy decreases the kinetic energy increases, this increase is represented by the increase in speed. At the moment that the potential energy is zero, the kinetic energy is maximum i.e. the body experiences maximum velocity. And when the kinetic energy is minimal or zero, it tells us that all the kinetic energy has been transformed into potential.
SP1b.
During a 5.0 second interval, an object's velocity changes from 25 meters per second
east to 15 meters per second east. Determine the magnitude and direction of the
object's acceleration.
Answers
Answer:
2 m/s^2, west
Explanation:
Vf=final velcoity
Vi=initial velocity
t=timw
[tex]a = \frac{vf - vi}{t} [/tex]
=
[tex] \frac{15 - 25}{5} [/tex]
= - 2 m/s^2
The - changes direction and makes it opposite
2 m/s, west
The magnitude of the object acceleration is -2m/s². Since the acceleration of the object is negative, hence the direction will be towards the west
Acceleration is the change in velocity of a body with respect to time. Mathematically;
[tex]a=\frac{v-u}{t}[/tex]
v is the final velocity
u is the initial velocity
t is the time taken;
Given the following parameters
v = 15m/s
u = 25m/s
t = 5.0secs
Substitute the given parameters into the formula to have:
[tex]a=\frac{15-25}{5}\\a=\frac{-10}{5}\\a=-2m/s^2[/tex]
Hence the magnitude of the object acceleration is -2m/s². Since the acceleration of the object is negative, hence the direction will be towards the west.
Learn more here: https://brainly.com/question/24175401
when wave enter a new region of high density the reflected wave ?
a- chnage phase by 180 degree
b- doesn't change phase bu 180 degree
Answers
1. Uma lâmpada incandescente de 60 W é usada para iluminar um corredor de uma loja. Nos dias em que a loja está aberta, essa lâmpada permanece acesa por 10 horas. Sabendo que a loja abre 6 dias na semana, e que a taxa paga pela energia elétrica é de R$0,75 por kWh, calcule o gasto com energia elétrica, por semana, dessa lâmpada.
Answers
Answer:
The cost of electric energy, per week, is $3.15
Explanation:
Given that,
Power = 60 W
Time = 10 hours
Cost of electric energy = $ 0.75
We need to calculate the energy
Using formula of energy
[tex]E=Pt[/tex]
Where, P = power
t = times
Put the value into the formula
[tex]E=60\times10[/tex]
[tex]E=600\ Wh[/tex]
[tex]E=0.6\ kw h[/tex]
We need to calculate the energy consume in a week
Using formula of energy
[tex]E'=0.6\times7[/tex]
[tex]E'=4.2\ kwh[/tex]
We need to calculate the cost of electric energy, per week,
Using energy for cost
[tex]Cost\ of\ 1\ kWh=\$0.75[/tex]
[tex]Cost\ of\ 4,2\ kwh=4.2\times0.75[/tex]
[tex]Cost\ of\ electric\ energy=$ 3.15[/tex]
Hence, The cost of electric energy, per week, is $3.15
Which of the following is the correct unit to measure the current in a radio?
Watts
Volts
Amps
Tons
Answers
Answer:
watts
Explanation:
Answer:
its a.) watts
Explanation:
natalia is studying a wave produced in her magnetics lab.This wave can move through the empty space in a vacum and carries a lot of energy. What wave is natalia most likley studying
a sound wave
an ocean wave
a gamma ray
an earthquake shock wave
Answers
Answer:
gamma wave
Explanation:
sdwdadasadsawd
The heat transfer depicted in the image is MOST likely
A) circulation.
B) conduction.
Eliminate
C) convection.
D) radiation.
first to answer correctly get brainlilest
Answers
Answer:
Convection
Explanation: