In this type of bond, electrons are lost or gained by atoms, and the atoms are held together by electrical attraction.a. covalent
b. ionic
c. partial
d. strong
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Special features allow newspapers and news stations to target more specific audiences than headline news alone. a. Trueb. False
True or False? A negative energy balance occurs when you take in more calories than you need, and a positive energy balance occurs when you take in fewer calories than you need.
What would happen to Earth if ocean floor were created at divergent boundaries at a faster rate than it is destroyed at convergent boundaries?
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Answer:
10 seconds
Explanation:
Hope this is right and that it helps.
You see if the skier is going 250 meters a second 250 times 10 is 2500 so it would take the skier 10 seconds.
Answer:
10 sec.
Explanation:
distance = 2500 meters
velocity = 250 meter/second
time = distance / velocity
= 2500 meters
250 meter/second
= 10 sec.
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We know, Like charges repel each other whereas unlike charges attract each other, In picture 3 they are like charges (both are positive) so, we can repulsion hence, picture is correct!
In picture 1, they are unlike charges, & showing repulsion which is wrong, same In picture 2, they are like charges & showing attraction so they are wrong as well
Hope this helps!
B. energy
C. electrons
D. neutrons
E. protons
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Answer: Option (C) is the correct answer.
Explanation:
An atom consists of three subatomic particles which are protons, neutrons and electrons.
The protons and neutrons are present inside the nucleus. Whereas electrons revolve around the nucleus.
Whenever there is a bond formed by loss, gain or sharing between any two atoms then it is due to the electrons.
Hence, we can conclude that atoms may be bonded together by losing, gaining, or sharing electrons.
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Answer:
Electro-negativity is the tendency of an atom to attract the shared pair of electron in a covalent bonding while forming a molecule.
Explanation:
In a covalent bonding the atoms share the electrons mutually without actually transferring it to one of the atom to gain a stable configuration. In such a case when one atom is more electro-negative than the other then the shared pair of electron gets slightly shifted towards the more electro-negative developing a denser cloud of electrons near the nucleus of that atom which we denote as partial negative () in the superscript.
In water molecules we have a similar case where the oxygen atom is more eletro-negative (value=3.44) than the hydrogen atom (value=2.2). This leads to a higher electron density near the oxygen atom. A part from the shared pairs, the oxygen atom also possesses 2 lone pairs of electrons which tend tp makethe shape a tetrahedron in a 3D structure. This results in molecular shape being bent with an H-O-H angle of 104.5°.
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A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/s .If the cart has an initial speed of of 2.0 m/s and its final speed is calculated as 22m/s.
Given data is,
Time t = 5 seconds
Acceleration a = 4 m/s
Initial speed u = 2 m/s.
What is velocity?
Velocity is defined as the rate of change of object's position with some function of time.
Mathematically, Velocity can be defined by the ratio of distance and time.
Velocity = Distance/ time.
The velocity after a certain time of acceleration can be described with the formula as,
V = u + at
where, v is the final velocity,
u is the initial velocity,
a is the acceleration,
t is the time.
Substituting all the given values in the formula,
V = 2 + ( 4x5)
= 2 + 20
V = 22m/s
The final velocity of a cart rolling down can be calculated as 22 m/s.
To know more about the velocity,
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Answer: solve it with the following formula:
Vf = Vi + at
Final velocity = initial velocity + ( acceleration × time)
Explanation:
Putting the values
Vf = 2.0m/s+ 4.0m/s²× 5.0s
Vf = 2.0m/s +20.0 m/s (m/s² × s = m/s)
Vf = 22.0 m/s