Answers
Answer:
Wanna be my friend?
Explanation:
Related Questions
People used to believe that if a penny was dropped ff Tom the Empire State Building, how fast would it be moving just before impact on ground? From release of your hand it takes 45 seconds falling at 9.8 m/s^2 due to gravity l.
Answers
Answer:
99
Explanation:
define null point
define null point
Answers
Answer:
In physics a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other
No links please, links never work, this is science not physics
Which two claims about cats are most likely to be based on science?
A. Cats are the best animals to keep as pets.
B Whiskers help cats sense distances when hunting prey.
C. Cats spend more time sleeping than most other predators.
D. Seeing a black cat is likely to bring you bad luck.
Answers
Answer:
b and c are the answers
A is an opinion, D is a superstitious belief because they haven’t found Jesus obviously
An object of mass 2kg is thrown vertically downwards with an initial kinetic energy of 100J. What is the distance fallen by the object at the instant when its kinetic energy has doubled
Answers
The distance fallen by the object at the instant when its kinetic energy has doubled is 5.097m
The kinetic energy of an object is the energy possessed by the body by virtue of its motion.
The gravitational potential energy (energy due to the virtue of its position) of a body is being converted to Kinetic energy once an object falls.
Using the law of conservation of energy according to the equation:
Kinectic Energy = Potential Energy
Since PE = mgh
KE = PE = mgh
Given the following parameters
KE = 100J
m = 2kg
g = 9.81m/s²
Required
Height h
Substitute the required values into the formula
100 = 2(9.81)h
h = 100/19.62
h = 5.097m
Hence the distance fallen by the object at the instant when its kinetic energy has doubled is 5.097m
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Mass is measured in
a) Litters
b) Centimeter
c) Newton
d) Kilogram
Answers
Answer:
d) Kilogram.
Hope it helps youMass is measured in
a) Litters
b) Centimeter
c) Newton
d) Kilogram
Worth 10 points! I will give brainliest!! Please help!!! See picture!
Answers
Answer:
The last option
Explanation:
pls ans fast and i will mark brainlist. pls
Answers
Answer:
the thumb
Explanation:
pressure is exerted more by an area of small surface area.
pressure is got by P=Force/Area in contact
on the thumb there is a smaller area in contact. so as the area reduces, the force exertes becomes greater.
A charge feels a 7.89 x 10-7 N force when it moves 2090 m/s at a 29.4° angle to a 4.23 x 10-3 T magnetic field. What is the amount of the charge?
Answers
We have that the amount of the charge q is
[tex]q=1.8*10^{-7}[/tex]
From the Question we are told that
Force [tex]F=7.89 x*10^{-7}[/tex]
Velocity [tex]V=2090m/s[/tex]
Angle [tex]\theta=29.4[/tex]
Magnetic field [tex]B=4.23 * 10^{-3} T[/tex]
Generally, the equation for Force F is mathematically given by
[tex]F=qVBsin\theta\\\\q=\frac{F}{VBsin\theta}[/tex]
[tex]q=\frac{7.89 x*10^{-7}}{4.23 * 10^{-3} T*sin29.4*2090m/s}[/tex]
[tex]q=1.8*10^{-7}[/tex]
In conclusion
The amount of the charge q is
[tex]q=1.8*10^{-7}[/tex]
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From the question, the given charge moving within the magnetic field would have a value of 1.82 x [tex]10^{-7}[/tex] C.
A charge is either a positively or negatively charged particle. When a charge is moving through a magnetic field, it would experience a force which depends on the amount of the charge, its speed, the magnetic field strength and angle. The force on a charge in a magnetic field can be determined by:
F = qvBSin θ
where: q is the charge, v is its velocity/ speed in the field and θ is the angle of deflection of the charge.
Given that: F = 7.89 x [tex]10^{-7}[/tex] N, v = 2090 m/s, B = 4.23 x [tex]10^{-3}[/tex] T and θ = 29.4°.
Thus, the amount of the charge can be determined by;
q = [tex]\frac{F}{vBsin O}[/tex]
= [tex]\frac{7.89*10^{-7} }{2090*4.23*10^{-3}* Sin 29.4 }[/tex]
= [tex]\frac{7.89*10^{-7} }{4.340}[/tex]
q = 1.818 x [tex]10^{-7}[/tex]
q = 1.82 x [tex]10^{-7}[/tex] C
Therefore, the amount of the charge that moved within the magnetic field is 1.82 x [tex]10^{-7}[/tex] C.
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How many covalent bonds is phosphorus (Group 5A) likely to form? (1 point) O five O four two three
Answers
Answer:
Three
Explanation:
Group 5A elements like phosphorus form 3 covalent bonds.
Answer: 3
Explanation:
if u can solve these with work i will literally love u forever
Answers
Answer:
I cant open it neither I can download it!
all the distances from the curved surface are measured from the:
a) pole
b) centre of curvature
c) focus
d) radius of curvature
plz reply
Answers
Pole is the answer.
Actually when we measure, we use metre scale and thread. But since option doesn't have it, so Pole is the answer . Because all curved surfaces has a pole . So, we can directly measure around it.
Hope it helps you
11. What is the resolution of this ruler? 6-centimeters
Answers
six cm - centimeters
What mass of water in grams will fill a tank 100cm long, 50cm wide, 30cm high?
Answers
Answer:
150,000grams
Explanation:
100*50*30=150,000
Also 1ml water= 1 grams
Answer:
150,000³
Process:
You multiply 100cm x 50cm x 30cm. The reason you do this is because the "mass" will be the volume of the tank of water. A "small 2" would represent a two dimensional area, whereas the "small 3" would represent a 3 dimensional area.
The number of flowers on different breeds of bushes in a greenhouse is recorded every week for two months.
Answers
Is there a equation or something so I can do the math of how many flowers there are at the end of the two monthsm
Group 2 elements have two valence electrons. Which kind of bond will they most likely form, and why?(1 point)
A covalent bond is likely because they want to share those two valence electrons in order to become stable.
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
An ionic bond is likely because they are metals and will want to bond with nonmetals.
A metallic bond is likely because they are metals and can bond with other metals.
Answers
Answer:
An ionic bond is likely because they will want to give away two valence electrons in order to become stable.
Considering the octet rule and the definition of ionic bond, the correct option is the second option: "An ionic bond is likely because they will want to give away two valence electrons in order to become stable."
Consider first the octet rule, which states that atoms combine or form ions with the goal of obtaining 8 electrons at their last level. In this way, an electronic configuration similar to that of the closest noble gas in the periodic table is reached. This happens because this configuration, of full electronic level, is very stable from the energy point of view
On the other hand, an ionic bond is a type of chemical bond that occurs when one atom gives up an electron to the other, in order for both to achieve electronic stability.
This union normally occurs between metal and nonmetal elements with different electronegativity, which means that the elements have different capacity to attract electrons. In general, metal elements are willing to donate an electron while nonmetals are willing to receive it.
In summary, an ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.
Finally, the correct option is the second option: "An ionic bond is likely because they will want to give away two valence electrons in order to become stable."
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https://brainly.com/question/12064867?referrer=searchResultshttps://brainly.com/question/5277024?referrer=searchResultsWhy are there only two elements in the first period of the periodic table?(1 point)
because the first two elements both start with H and are grouped together
because the next elements have other things in common and they need to be arranged together
because each row increases in atomic mass by a specific number, so anything over five is in the second row
because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
Answers
Answer:
because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
There are only two elements in the first period of the periodic table (statement 4) because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by the number of orbits
A period is defined as an interval required for a cycle to repeat itself.
A period is a horizontal row of the periodic table. Seven periods in the periodic table, with each one beginning from the far left to right.Periods may contain as few as two elements and as many as thirty-two elements. A new period starts when a new number of orbit or principal energy levels begins filling with electrons.Period 1 has only two elements (hydrogen and helium) as they have electrons in only the 1st energy level or first orbit and each period on the table is organized by the number of orbits or level of energy.
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What is the economical application of change of state of matter
Answers
Answer:
Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.
A student uses the right-hand rule as shown.
What is the direction of the magnetic field in front of the wire closest to the student?
O up
Oright
O down
O left
Answers
Answer: O:right
Explanation: In this case you place your finger on the current, and your fingers should curl showing the way, you must use your right hand in this case, otherwise that would mean the fingers on your left would bend way back, and snap off, (Not really lol, just saying)
The direction of the magnetic field in front of the wire closest to the student is right. Thus, the correct option is B.
The direction of the magnetic field encircling a current-carrying wire can be determined using the right-hand rule. The magnetic field's direction is shown by the direction in which your fingers wrap around the wire if you point your right thumb in the direction of the current.
In this case, the student is using the right-hand rule with their thumb pointing upward. This means that the direction of the current is flowing into the page, perpendicular to the direction of their thumb.
To determine the direction of the magnetic field in front of the wire closest to the student, we can curl our fingers around the wire in the direction of the current (into the page) while keeping our thumb pointing upward. This results in the direction of the magnetic field being to the student's right.
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#SPJ7
Which of your groups should you NOT change anything for? (in other
words, everything stays the same for this group)
A.Experimental
B.Control
C.Quantitative
D.Qualitative
Answers
Answer:
B
Explanation:
The control is something that is meant to not be changed, the control is a comparison of the experimental.
maize is called monocot why?
Answers
Answer:
Rice, wheat, maize all have one cotyledon in their seed, so they are monocots. Explanation: The monocot plants have a single cotyledon. They have a fibrous root system, leaves in monocots have parallel venation.
Explanation:
a radioactive element has a half-life of 30 days. calculate the mass of the element that remains after 20 days if 100g of the element decays. Also, calculate the decay constant.
Answers
Explanation:
the answer is in the image above
S=1/2(u+v)t
i. u as subject
ii. V as subject
Answers
Answer:
i. [tex]u=\frac{2s}{t}-v[/tex]
ii. [tex]v=\frac{2s}{t}-u[/tex]
Explanation:
i.)
[tex]s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-v=u[/tex]
ii.)
[tex]s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-u=v[/tex]
Two trucks left the warehouse at the same time and drove in
the same direction along a straight road. One truck drove at 68
km/h while the other drove at 57 km/h. Find theirs distance
apart after2 hours.
Answers
V = 68km/h
t = 2hours
Distance = speed * time
D = 68 * 2
D = 136km
Truck B
Speed = 57km/h
t = 2 hours
Distance = speed * time
D = 57 * 2
D = 114km
Distance travelled by truck A = 136 km
Distance travelled by truck B = 114km
Distance apart = 136km - 114km = 22km
Hence both the trucks will be 22kms apart.
Hope this helps. Plz let me know if you have any doubts.
What is concentration gradient?
Answers
Answer:
The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse. The direction of diffusion is said to be 'down' or 'with' the concentration gradient.
Explanation:
Complete the table below. Place an X in the appropriate box to
indicate the type of each measurement unit.
Answers
Answer:
Gram per centimeter cubed: Derived Unit
Decimeter: SI Unit
Liter: Derived Unit
Meter Cubed: Derived Unit
Kilogram: SI Unit
Explanation:
Look in Quizlet
10. Numerical problems:
b. A stone is thrown vertically upwards with an initial velocity of 20 m/sec.find the maximum height it reaches and the time taken by it to reach the height. (g = 10 m/s2).
c. A car is moving at a rate of 72 km/hr. How far does the car move when it stops after 4 seconds?
d. A bus starts from rest. If the acceleration is 2 m/s2, find
1. the distance travelled.
2. the velocity after 2 seconds.
e. A stone is thrown vertically upward with the velocity of 25 m/s. How longo it take to reach the maximum height? Also calculate the height.
with process please
Answers
Answer:
a)20 m,2s
Explanation:
Given
Initial velocity=20 m /sec
g=10 m/s square
v =0m/s
h =?
t =?
now,
v = U +gt
=v=20 +10t
Or,10t=20
Or,t=20
10
therfore ,2 s.
Again,
h=ut -1 gt square
2
Or, h=20×2-1×10(2)square (multiply and cut )2×5 =10
; 2
Or,40-5×4
therefore , 20m
u = 25 ms-1
v = 0 m/s
a = -10m/s^2
We have to find time and distance,
For time,
v = u + at
Which can be rephrased as,
v - u/a = t
t = 0 - 25 / -10
t = 2.5 secs
Hence, the stone takes 2.5 secs to reach the maximum height.
To calculate the maximum height attained by the stone, we have to calculate distance/ displacement .
The formula for calculating distance is,
s = ut + 1/2at^2
s = 25 * 2.5 + 1/2 * -10 * 2.5 * 2.5
s = 62.5 + (- 31.25)
s = 62.5 - 31.25
s = 31.25mts
Hence, the maximum distance travelled by the stone is 31.25 meters.
Hope this helps you. Plz let me know if you have any doubts.
What do you think the disadvantages of nuclear energy are nabilne fa
Answers
Answer:
1 . Environmental impact. Although nuclear power plants release zero carbon emissions, nuclear power still has a substantial impact on the environment, mainly through mining and water discharge. ...
2. Water intensive. ...
3.Risk of nuclear accidents. ...
4.Radioactive waste. ...
5.Non-renewable.
please follow meAccording to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction and thus mass is conserved. The reactant in this model is hydrogen peroxide. Hydrogen peroxide decomposes to produce water and oxygen gas. How many water molecules must be added to complete this model?
Answers
Answer:
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.
Explanation:
A train is moving with the velocity of 10m/s . It attains an acceleration of 4m/s after 5 sec . find the distance covered by train at that time.
Answers
When moving across a period from left to right in the periodic table, excluding transition elements, which trend occurs?(1 point)
Valence electrons increase by one.
Valence electrons decrease by one.
The energy levels increase by one.
The energy levels decrease by one.
Answers
Answer:
Valence electrons increase by one
The 'Periodic Table' is characterized as the 'tabular representation of chemical elements as per their atomic number in order to keep the elements possessing similar properties in a single group.'
In case one moves towards right from left in this table except for the transition elements, the trend that occurs would be:
A). Valence electrons increase by one.
'Valence electrons' are described as 'any of the electrons that are present in an atom's outermost shell.' These are the electrons that possess the ability to develop bonds with other present atoms. The valence electrons present increase by one unit to maximum of 4 units in the period if we move from the left towards the right leading to an enhanced charge on the nucleus.Thus, option A is the correct answer.
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