Answer:
I think it is D
Explanation:
the Bohr model says that electrons whizz around the atomic nucleus in the same way that the earth goes around the sun - but rather than being bound by gravity, it is bound by electromagnetic forces.
A car accelerated from 0 m/s to 50 m/s in 10 s. What was the average acceleration?
Answer:
in 5 meters
Explanation:
please give me 5 star
Answer:
I want to say 5 meters is your answer
The waves with the LEAST energy have _____ frequencies and _____ amplitudes.
A. low; large
B. low; small
C. high; large
D. high; small
answer is the Low; small ?
the waves have low frequencies and small ??...
Please help. I will give brainliest to first good answer
How does the electric force between two charged objects on the charges of the objects
Answer:
If one charged object is positive, and the other charged object is negative, then the two objects will attract each other. If both objects are positive, the objects will repeal each other. If both objects are negative, the objects will also repeal each other.
A 800 kg car is traveling a 4.5 m/s. What is the momentum of the truck?
Answer:
3600 kg m/s
Explanation:
Momentum can be calculate using the following formula:
p=m*v
where p is the momentum in kg m/s, m is the mass in kilograms, and v is the velocity in m/s.
We know the mass of the car is 800 kilograms and the car is traveling at 4.5 m/s. So, m=800 and v=4.5 Therefore, we can substitute 800 for m and 4.5 for v.
p=m*v
p=800*4.5
Multiply
p=3600
The momentum is 3600 kg m/s
A girl on the beach sees 8 waves pass in 4 s. If the wavelength of each
wave 1.2 m, what is the velocity of the waves?
This is for cherylnotcherry
Velocity = frequency x wavelength
= [tex]\frac{8}{4}[/tex] x 1.2
= 0.6 m/s
Answer:
The velocity of wave is 2.4m/s.
Explanation:
First, find the frequency using the formula :
[tex]f = \frac{1}{t} [/tex]
Let t = 4,
[tex]f = \frac{1}{4} [/tex]
[tex]f = 0.25Hz[/tex]
Next, given that each wave is 1.2m and there are 8 waves so the wavelength is :
[tex]λ = 1.2 \times 8[/tex]
[tex]λ = 9.6m[/tex]
Lastly, you have to use velocity formula :
[tex]v = f \times λ \: [/tex]
Let f = 0.25Hz,
Let λ = 9.6m,
[tex]v = 0.25 \times 9.6[/tex]
[tex]v = 2.4[/tex]
(Correct me if I am wrong)
If the average speed of a drag racing car is 0.069 miles second, how long would it take the car to complete a 1/4 mile (0.25 mile) straight track?
Answer: 3.6 seconds
Explanation:
The correct speed of the car is 0.069 miles per second.
Hi, to answer this question we have to apply the next formula:
Time = distance / speed rate
Replacing with the values given:
t = 0.25 m/ 0.069 mps =3.6 seconds
It would take the drag racing car 3.6 seconds to complete a ¼ mile straight track.
Feel free to ask for more if needed or if you did not understand something.
Conclusions related to historical events are limited to subjective evaluation of the existing evidence because _____.
Answer: they can not be replicated or repeated.
Explanation:
A historical events are opened for more study and research. So, they can be repeated for more study but with reference to the documents written about that event in a manner in which others are permitted to.
Where as, the conclusions related to historical events are limited to the subjective evaluation based on the different outcomes draw as a result of individual findings.
You and your lab partner, Mel, are engrossed in a chemistry activity using beans to compute the average atomic mass of an element "beanium". You have three isotopes of beanium to measure. Using a triple beam balance, you find the mass of each isotope three times and then take an average. You and Mel compute an average mass for beanium of 8.93 grams and your percent error is 18%. Your teacher instructs you to try again and you end up with the same results. In fact, no matter how many times you try, your percent error is between 18 - 20%.
What is the MOST LIKELY source of error in this activity?
A) random error: Mel misreads the balance occassionally.
B) random error: You and Mel take turns reading the balance and do not read it to the same accuracy.
C) systematic error: The balance is not calibrated accurately, resulting in inaccurate measurements.
D) systematic error: Every now and then you or Mel stop to chat with your neighbors and lose track of what you are doing.
Answer:
C:
Explanation:
either C or A but A seems unlikely after multiple attempts. Although the question doesn't make it clear whether the balance is electric either way it could be wrong in someway and seems to be the most likely.
Answer:
The answer is C
Explanation:
I pretty sure it is correct
The diagram represents two small, charged, identical metal spheres, A and B, that are separated by a distance of 2.0 meters. If the two spheres were touched together and then separated, the charge on sphere A would be *
q1= -1.6x10^-6C
q2=+1.0x10^-6 C
d=2m
Final answer is -3.0x10^-7 C, but I don't know why it is like that.
Answer:
if you are trying to figure out if it is right. I believe it is right (the answer) but trust your instincts go for it.
Explanation:
The charge on sphere A is -3 × 10⁻⁷C.
Distribution of charge:According to the question, there are two identical spheres, sphere A and sphere B with charges
q₁= -1.6 × 10⁻⁶C , and
q₂=+1.0 × 10⁻⁶ C respectively separated by a distance of 2m.
Now, the charges are brought in contact with each other. So the total charge on both the spheres when they are in contact would be the sum of the two charges, that is:
q = q₁ + q₂
q = -1.6 × 10⁻⁶C + 1.0 × 10⁻⁶ C
q = -0.6 × 10⁻⁶C, or
q = -6 × 10⁻⁷C
Since the two spheres are identical, when they are separated from each other, the charge is distributed equally on both of them. So, the charge on each sphere is :
Q = q/2
Q = (-6 × 10⁻⁷C)/2
Q = -3 × 10⁻⁷C
Learn more about charge distribution:
https://brainly.com/question/13172677?referrer=searchResults
Which of the following units is used to express electrical charge?
A: Newton
B: Coulomb
C: Joule
Answer:
B. Coulomb
Explanation:
you may slip if you step on a banana peel similarly you may find difficulty to walk on a slippery or a wet floor
Answer:
yes you do slip
Explanation:
What is the mass of an object that has a density of 3.2 g/cm3 and a volume
of 5.5 cm3? (The density of an object has the equation d =m/v.)
Answer:
The mass of an object is 17.6 grams.
Explanation:
We have,
Density of the object is 3.2 g/cm³.
Volume of the object is 5.5 cm³
It is required to find the mass of the object. The density of the object is given by the mass acting per unit its volume. It is given by :
[tex]\rho =\dfrac{m}{V}[/tex]
m is the mass of an object
[tex]m=\rho \times V\\\\m=3.2\ g/cm^3 \times 5.5\ cm^3\\\\m=17.6\ g[/tex]
So, the mass of an object is 17.6 grams.
Question 2 (1 point)
If an atom has 3 protons, 3 electrons and 2 neutrons, what is the atom's electrical
charge?
positive
negative
neutral
Answer:
neutral
Explanation:
3p - 3e = 0 and that leaves 2 neutrons so it will be neutral
The image below shows a model of a plant cell.
All cells need energy to live. How do the organelles in the plant cell above work together to get and use this energy?
A.
Mitochondria take in food from the environment, and the nucleus breaks down this food to release its energy to the cell.
B.
The vacuole takes in energy from the environment, and chloroplasts change this energy into a form the cell can use.
C.
Chloroplasts make food using energy from the Sun, and mitochondria break down this food to release energy for the cell.
D.
The nucleus makes energy from materials in the cell, and the vacuole stores this energy until the cell needs to use it.
Answer: b
Explanation:
Answer:
Correct answer is option C for study island users.
Explanation:
What is the difference between a neutral atom and an ion?
Answer:
a neutral atom has no charge, while an ion does.
Explanation:
cation = positive charge
anion = negative charge
A neutral atom has no charge while an ion has charge which depends on whether it looses or gains electrons.
What is an ion?
An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.
Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.They are produced in the solid or liquid state in the presence of salts when they react with solvents.
Learn more about ions,here:
https://brainly.com/question/1488567
#SPJ2
Is gravity constant over the entire earth surface.
Explain why?
Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation
In a collision, a 15 kg object moving with a velocity of 3 m/s transfers some of its momentum to a 5 kg object. What would be the velocity of the 5 kg object after the collision if the 15 kg object is still moving at 1 m/s?
The key to solve this problem is the conservation of momentum. The momentum of an object is defined as the product between the mass and the velocity, and it's usually labelled with the letter [tex]p[/tex]:
[tex]p=mv[/tex]
The total momentum is the sum of the momentums. The initial situation is the following:
[tex]m_A=15,\quad v_A=3,\quad m_B=5,\quad v_B=0[/tex]
(it's not written explicitly, but I assume that the 5-kg object is still at the beginning).
So, at the beginning, the total momentum is
[tex]p=m_Av_A+m_Bv_B=15\cdot 3+5\cdot 0=45[/tex]
At the end, we have
[tex]m_A=15,\quad v_A=1,\quad m_B=5,\quad v_B=x[/tex]
(the mass obviously don't change, the new velocity of the 15-kg object is 1, and the velocity of the 5-kg object is unkown)
After the impact, the total momentum is
[tex]p=m_Av_A+m_Bv_B=15\cdot 1+5\cdot x=15+5x[/tex]
Since the momentum is preserved, the initial and final momentum must be the same. Set an equation between the initial and final momentum and solve it for [tex]x[/tex], and you'll have the final velocity of the 5-kg object.
Which of the following is the most likely global climate change?
a. a decrease in the overall temperature of the Earth
b. an increase in the overall temperature of the Earth
an increase in the number of cold climates
no change to global climate
C.
d.
Please select the best answer from the choices provided
OA
OB
OC
OD
Answer:
b. an increase in the overall temperature of the Earth
Explanation:
Answer:
Ban increase in the overall temperature of the Earth
Explanation:
I took the edg test
Someone please hellpp!!! Will mark brainliest
Answer:
r=x+y
sorry if its not correct you can delete if you want.
What is the proper way to start a fire?
-Gather small twigs and light them. Then gather larger sticks.
-Gather only kindling to start the fire. Then light your fire.
-Gather more firewood than you think you will use. Then light your fire.
-Gather only the firewood you think you will use. Then light your fire.
Please hurry marking brainliest
Answer:
Explanation:
STEP 1: Gather Your Tools. There's a bit more to building a great campfire than simply placing a few logs in a heap ... If your site has a fire ring, you'll probably have to push the ash and charcoal from ... (Remember, tinder is the really light, quick burning material.) 1. ... Then build a larger teepee of firewood over the kindling.
Mechanical energy is the_______
of kinetic energy and potential energy.
HELP ME!!!!
Answer:
The answer is sum!
Explanation:
Looked it up :>
Plssss help Do you guys have any other more interesting, funny or creative ideas of incline problems than something sliding down an incline?
If gravity is the only force present, what is the total mechanical energy of a
rock falling off a cliff at a time when its potential energy is 500 J and its
kinetic energy is 600 J?
A. 500 J
B. 100 J
C. 600 J
D. 1,100 J
Answer:
(D) is correct option.
Explanation:
At a particular time, the potential energy of a rock is 500 J and its kinetic energy is 600 J.
It is required to find the mechanical energy of the rock. Mechanical or total energy is the sum of kinetic and potential energy. So,
TE = K+ P
TE = 500 J + 600 J
TE = 1100 J
So, the total mechanical energy of a rock is 1100 J. Hence, the correct option is (D).
Answer:
1,100
Explanation:
How often a wave occurs (repeats its back and forth or up and down motion) is the wave's _____________. *
-crest
-frequency
-wavelength
-resting point
Answer:
Frequency
Explanation:
The number of times a wave is occurring is called the frequency of a wave. It is also defined as the number of vibrations or oscillations per unit time. It is represented by f or [tex]\nu[/tex] (nu).
Its relation with the wavelength and the speed of a wave is given by :
[tex]\nu =\dfrac{v}{\lambda}[/tex]
Hence, we can say that the correct option is (B) "frequency"
Which of the following is correct scientific notation for the value 0.000537
meters?
A. 0.537 x 10-3
B. 5.37 x 10-4
C. 537 x 10-8
D. 53.70 x 103
Answer:
[tex]5.37\times 10^{-4}\ m[/tex]
Explanation:
Scientific notation is used to express a number in the form of [tex]a\times 10^b[/tex]. Here, a is real number and b is integer.
The given number is 0.000537 m
To express it in scientific notation, we must understand that there are 6 numbers after decimal. There are 3 zeroes before 537.
In scientific notation we can write it as :
[tex]5.37\times 10^{-4}\ m[/tex]
Therefore, this is the required answer.
Answer:
5.37×[tex]10^{-4}[/tex]
Explanation:
A P E X
What is the correct definition of pH?
how basic a solution is
the concentration of potassium ions in solution
how acidic a solution is
the concentration of hydrogen ions in solution
Answer:
here is your answer..
Explanation:
the concentration of hydrogen ions in solution
Hydrogen ion concentration in a solution is called pH so, option 'D' is the correct answer.
What is pH ?The concentration of hydrogen ions in a solution is measured by its pH, which is a measure of its acidity. Pure water splits into hydrogen and hydroxyl (OH-) ions in roughly equal amounts.
The word pH denotes the concentration of hydrogen ions in a solution, such as what percentage of a solution contains hydrogen ions. The pH scale ranges from 1 to 14, with 1 being the most acidic and 14 being the most alkaline.
Find out more information about 'alkaline'.
https://brainly.com/question/7103956?referrer=searchResults
Jaipal measures a circuit at 1.2 A and 24 . Using Ohm’s law, what can he calculate for the circuit? current (C) current (I) voltage (V) voltage (A)
Answer: voltage (V)
Explanation:
Hi, in the answer the letter A (1.2 A) stands for Ampere, and the symbol next to the number 24 must be Ω 8 (Ohms)
So, applying Ohm's law:
Voltage (V) =current (I) x resistance (R)
V = I x R
Replacing with the values given;
V = 1.2 A x 24Ω
In conclusion, we can calculate the value of Voltage for the circuit.
Feel free to ask for more if needed or if you did not understand something.
Answer:
voltage
(V)
Explanation:
A set of charged plates 0.00262 m apart has an electric field of 155 N/C between them. What is the potential difference between the plates? V
Answer: The potential difference between the plates = 0.4061V
Explanation:
Given that the
Electric field strength E = 155 N/C
Distance d = 0.00262 m
From the definition of electric field strength, is the ratio of potential difference V to the distance between the plates. That is
E = V/d
Substitute E and d into the above formula
155 = V/0.00262
Cross multiply
V = 155 × 0.00262
V = 0.4061 V
The potential difference between the plates is 0.4061 V
Answer:
.4061
Explanation:
acellus
two objects with the same mass will always have the same momentum true or false
Answer:
false
Explanation:
momentum = mass x velocity