What do electric conducts and thermal conducts have in comman?
Usually electrical conductors have loosely bound electrons. Materials that conduct heat are thermal conductors
Question 2
5 pts
(03.01 MC)
The nucleus of an atom is dense and positively charged. What was observed when
positively charged particles were radiated onto a gold atom during Rutherford's
experiment because of this?
O Negative charges were concentrated at the center of the atom.
N
Particles that struck the center of the atom were repelled.
Particles that struck the edges of the atom were repelled.
Positive charges were distributed all over the atom.
Answer:
The correct answer is particles that struck the center of the atom were repelled.
Explanation:
Rutherford performed an experiment which is called the gold foil experiment. In the gold foil experiment of the Rutherford, a gold foil is bombarded with the positively charged alpha particles. The bombardment of the alpha particles shows the unexpected result to Rutherford.
He thought these particles go through the gold foil but to his surprise, some particles bounced back and some deflected after colliding with foil. On the basis of these, he suggested that there is a positive charge present in the center of an atom that repelled the positive charge of alpha particles and leads to deflection and bouncing back.
Thus, the correct answer is particles that struck the center of the atom were repelled.
which model best shows the movement of oxygen during photosynthesis
If an object has a velocity of 8 m/s and
a momentum of 40 kg.m/s, what is the
mass of the object
Answer:
Explanation:
The Kinetic Energy (K.E) of an object can be calculated as:
We are given:
K.E = 480 K
Velocity of the object = v = 8 m/s
Using the values, we get:
Thus, the mass of the object will be 15 kg.
The mass of the object at the given momentum and speed is determined as 5 kg.
Momentum of the object
The momentum of the object is calculated as follows;
P = mv
where;
m is mass of the objectv is speed of the objectm = P/v
m = 40/8
m = 5 kg
Thus, the mass of the object at the given momentum and speed is determined as 5 kg.
Learn more about momentum here: https://brainly.com/question/7538238
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Using the diagram below and the labels attached to it answer the following:
Transverse Wave Anatomy
1. Define the crest and trough of a wave and identify TWO points that represents a crest or a trough.
2. Define wavelength and identify TWO points that could be used in the diagram to measure it.
2. Determine the frequency of this wave if the waves the diagram represents occurred within 1 second.
Answer & Explanation:
Crest is a point in the cycle where maximum or peak amplitude exists. In another way, it is a point on the positive side of a wave where maximum amplitude exits. Trough is a point in the cycle where minimum amplitude exists.
Crest: points A and E
Trough: points C and J
Wavelength is the distance between two crests or two troughs. One example is distance between points A and E.
Frequency is 3 because there are 3 oscillations in 1 second (follow the line from beginning to point D, then D to G, the G to end).
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Answer:
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if 1 teacher cant teach all subjects how come 1 student can learn all subjects ?
Answer:
d
d.d.d.d.d.d..d.d.d.d.d.d.d.d..d.d.d.d.d.d.d
Explanation:
D
Magnesium carbonate decomposes on heating to form magnesium oxide and carbon dioxide as
shown.
MgCO3 → MgO + CO2
How much magnesium carbonate is needed to make 5.0g of magnesium oxide?
А
3.5g
B 4.09
C 6.5g
D 10.59
The amount of 10.5 g magnesium carbonate is needed to make 5.0g of magnesium oxide.
So, option D is correct.
Given that, Magnesium carbonate decomposes on heating to form magnesium oxide and carbon dioxide as
MgCO₃ → MgO + CO₂
Molar mass of MgCO₃ = 24 + 12 + 48 = 84 g/mole
Molar mass of MgO = 24 + 16 = 40g/mole
40 gram MgO is produced from 84 gram of MgCO₃
1 gram of MgO produced from [tex]\frac{84}{40}=2.1[/tex] gram of MgCO₃
Therefore, 5 gram of MgO produced from [tex](5*2.1=10.5gram)[/tex] of MgCO₃
Thus, option D is correct.
Learn more about molar mass here:
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find the pOH of a solution made by dissolving 10.4g of HCl in a 500mL solution of water
The pOH of a solution : 13.756
Further explanationMass HCl=10.4 g
mol HCl (MW=36.5 g/mol) :
[tex]\tt mol=\dfrac{mass}{MW}=\dfrac{10.4}{36.5}=0.285[/tex]
Volume of HCl = 500 ml = 0.5 L
[tex]\tt M=\dfrac{n}{V}\\\\M=\dfrac{0.285}{0.5}=0.57~M[/tex]
HCl ⇒ H⁺ + Cl⁻
[H⁺]=[HCl]=0.57 M
pH= - log[H⁺]
pH=-log[0.57]=0.244
pH+pOH=14
pOH=14-0.244
pOH=13.756
sandy is looking though a stanstance that that absorbs some of the light waves and others others through. what type of light transmission is sandy seeing?
A. Translucent
B. opaque
C. transparent
D. a substance with color
Answer:
A. Translucent
Explanation:
Sandy is seeing a light transmission through a translucent medium. Or we can say this is a translucent light transmission.
In a translucent light transmission, some of the light are allowed to pass through and some are cut off. An example is frosted glass, tinted glassAn opaque object is does no allow any light to pass through. It simply does no transmit light. An example is paper, leaf and a bookA transparent transmission allows all of the light to pass through.