Answer:
insulator
Explanation:
it keeps heat in not moves it
which is a more scientific way of measuring earthquake? why?
Answer:Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes. Scientists used the Richter Scale for many years but now largely follow the “moment magnitude scale,” which the U.S. Geological Survey says is a more accurate measure of size.
The table shows information about four objects resting at the top of a hill.
A 3-column table with 4 rows titled Four Objects at Rest on a Hill. The first column labeled Object has entries W, X, Y, Z. The second column labeled Mass (kilograms) has entries 50, 35, 62, 24. The third column labeled Potential Energy (Joules) has entries 980, 1029, 1519, 1176.
Which object is on the tallest hill?
W
X
Y
Z
It's Z your welcome :)
Answer:
It is Z i believe.
Explanation:
Potential Energy = mass x gravity x height
W: 980 = (50)(9.8)(h)
X: 1029 = (35)(9.8)(h)
Y: 1519 = (62)(9.8)(h)
Z: 1176 = (24)(9.8)(h)
simplify:
W: 980 = 490h
X: 1029 = 343h
Y: 1519 = 607.6h
Z: 1176 = 235.2h
Divide from both sides of each equation:
W: (980/490) = h
X: (1029/343) = h
Y: (1519/607.6) = h
Z: (1176/235.2) = h
Simplify the left side:
W: 2 = h
X: 3 = h
Y: 2.5 = h
Z: 5=h
A box is 30cm wide 40cm long and 25cm high calculate area boa
Answer:
SA = 5900 sqcm
Explanation:
I am assuming you meant surface area since this is a three dimensional box. This formula for surface area (SA) is SA = 2 (wl + hl + hw). Once you have that would just have to plug the numbers in and calculate!
40.
Which two of these are equivalent lengths?
1) 0.600 meters
2) 0.060 kilometers
3) 60 millimeters
4) 6000 centimeters
help pls i need this right now
Answer:
0i,63.5j. Just see i as x and j as y
Alan and Monica tested how fertilizer X affected the growth of a plant. Alan and Monica put 100 grams of fertilizer X in pot 1. They put 0 grams of fertilizer X in pot 2.
What is pot 2 called in science?
A.
a test group
B.
a data group
C.
an observational group
D.
a control group
Answer:
D.
a control group
Explanation:
In a scientific experiment such as the one above, there is an experimental group and a control group. The experimental group is the group that receives the treatment while the control group does not receive any treatment. The control group helps the researcher to observe if the treatment had any significant effect.
In this case, it will help Alan and Monica to determine if fertilizer X actually had an effect on the plant. Therefore, the pot with o grams of fertilizer in it is the control group.
If the torque required to loosen a nut on the wheel of a car has a magnitude of 40.0Nm, what minimum force must be exerted by a mechanic at the end of a 30.0cm wrench to loosen the nut
Explanation:
Minimum force means that the force should be applied at a 90° angle from the wrench.
40.0Nm / (0.30m) = 133.33N.
The mimumum force is 133.33N.
If the two variables in a given theory move in the same direction, which type of relationship do they share?
OA.
negative
о
B.
positive
OC.
neutral
OD.
inverse
Criminology
Answer:
inverse
Criminology
Explanation:
Answer:
positive
Explanation:
If we double the distance between two point charges then coulombs force will
Answer: The size of the force varies inversely as the distance square between the two charges. Thus, if the distance between the two charges is doubled, the attraction or repulsion will become weaker and decrease to one-fourth of the original value. The size of the force shall be proportional to the value of each charge.
Explanation:
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What causes infectious diseases?
O A. Organ malfunction
O B. Vitamin deficiency
OC. Pathogens
OD. Genes
Answer:
The answer is C
Hope it helps
Answer:
C. Pathogens
Explanation:
what is electricity?
Explanation:
electricity is the flow of electrical power or charge
Explanation:
the flow of current is called electricity
What name is given to the work done per coulomb of charge passing between two points
Answer:
One ampere is the current that flows when one coulomb of charge passes a point in a circuit in one second.
Volt is referred to the name given to the work done per coulomb of charge
passing between two points.
What is Volts?This is referred to as the standard unit for electric potential and electric
potential difference which was named after the Italian physicist Alessandro
Volta.
Volts can be calculated by :
Volts= Work done(Joules) / charges(coulombs)
= J/C.
Read more about Volts here https://brainly.com/question/518946
Which type of matter is gold an element used in making jewelry A.) A heterogeneous mixture B.) A pure substance C.) A crystalline compound D.) A homogeneous mixture
Answer:
A
Explanation:
The gold used in the making of jewelry is usually not pure but a heterogeneous mixture of metals. Pure gold is quite soft and even though it may look better in appearance compared to those made using heterogeneous mixtures, it usually bends easily. Hence, in order to make the jewelry more durable, gold is usually mixed with other metals to form a heterogeneous mixture.
The correct option is A.
What would be the net force on an object if the object's acceleration is 0?
Answer:
Explain. yes it is possible because when the net force is zero and acceleration is zero. ... no, Neglecting air friction, the only force acting on this object is the force of gravity downward. There is no force of equal magnitude as the force of gravity acting in the opposite direction.
a pupil adds 37g of ice at 0°C to 100g of water at 30°C. The final temperature of the water and melted ice is 0°C. no heat is lost to, or gained from, the surroundings.
The specific heat capacity of water is 4.2 J/ (g°C)
what is the specific latent heat of ice?
A) 47 J/g c) 4700 J/g
b) 341 J/g d) 12600 J/g
Answer:
The specific latent heat of ice is approximately 341 J/g
The correct option is;
b) 341 J/g
Explanation:
The given parameters are;
The mass of ice the pupil adds to the water, m₁ = 37 g
The initial temperature of the ice, T₁ = 0°C
The mass of the water to which the ice is added, m₂ = 100 g
The initial temperature of the water, T₂₁ = 30°C
The final temperature of the water and the melted ice, T₂₂ = 0°C
The specific heat capacity of the water, c₂ = 4.2 J/(g·°C)
By the principle of conservation of energy, we have;
The heat gained by the ice = The heat lost by the water = ΔQ₂
Given that the ice is only melted with no change in temperature, we have;
The heat gained by the ice = The latent heat needed for melting the ice
ΔQ₂ = m₂ × c₂ × (T₂₂ - T₂₁) = 100 × 4.2 × (0 - 30) = -12,600 J
The heat gained by the ice = m₁ × [tex]L_f[/tex]
Where;
[tex]L_f[/tex] represents the specific latent heat of fusion of ice;
We have;
12,600 = 37 × [tex]L_f[/tex]
[tex]L_f[/tex] = 12,600/37 = 340.54 J/g ≈ 341 J/g
The specific latent heat of fusion of ice = [tex]L_f[/tex] ≈ 341 J/g.
elements X and Y have atomic number of 11 and 17 respectively. Which one of the elements is a metal?
Answer:
atomic 11
Explanation:
atomic 11 Na is metal
why is sound mechanical wave? long answer
If you could change one rule in soccer, what would it be and why?
What term means like a machine
Find the number of moles and the number of molecules in one cubic meter of air at 1 atmospheric pressure and 0C.
Answer:
The number of moles of the air is 4.464 x 10⁻⁴ mole
The number of molecules is 2.688 x 10²⁰ molecules
Explanation:
Given;
pressure of the air, P = 1 atm
volume of the air, V = 1 m³
temperature of the air, T = 0° C = 273 K
The number of moles of the air is calculated as;
PV = nRT
[tex]n = \frac{PV}{RT}[/tex]
where;
n is the number of moles
R is ideal gas constant = 8.2057m³atm/mol.k
[tex]n = \frac{1atm \ \times \ 1m^3}{(8.2057 \ m^3 atm/mol.K)(273 \ K)} = 4.464 \ \times 10^{-4} \ mol.[/tex]
The number of molecules is calculated as follows;
1 mole ---------------------> 6.022 x 10²³ molecules
4.464 x 10⁻⁴ mole ----------> ?
= (4.464 x 10⁻⁴) (6.022 x 10²³ molecules)
= 2.688 x 10²⁰ molecules of air.
A swing held up by someone at one side has the potential to swing when released.
True
False
which describes what a velocity/ time graph looks like with no acceleration?
Answer:
A straight line with no slope.
Answer:
C on edge 2021
Explanation:
The north pole of one bar magnet is near the south pole of another bar
magnet. What happens to the magnets?
A. They twist away from each other.
B. They repel each other
C. They attract each other.
D. They neither attract nor repel each other.
Answer:
I think it could be C.
hope it helps!
Record the mass for each dialysis tube: A B 0% C 5% D 10% E 15% Mass (before): Mass (after): Difference:
Answer:
hey dont mind me just need points
Explanation:
The owner of a window-treatment company wants to design shades that will cover the windows of a house. The shades should also warm the house by maximizing the absorption of solar energy coming through the windows.
Which kind of material would best accomplish this task?
black and textured
black and smooth
white and textured
white and smooth
black and textured is the answer
Answer:
D
Explanation:
Help me with this question please
Answer:
the answer is A, 9.5 units
FOR A liquid drop of radius r falling in air with terminal velocity, power delivered by gravitational force is propotional to
Answer:
P = m g v
Explanation:
Power is defined as the relationship between work and time
P = W / t
The work is defined by the scalar product of the force and the displacement, in the case of a drop falling the vertical force and the displacement has the same direction, therefore the angle between them is zero and the cosines of zero is one (cos 0 = 1)
W = F y
the gravitational force is proportional to the weight of the drop (F = mg)
W = mg y
we substitute
P = m g y / t
the terminal velocity of the drop is constant
P = m g v
Explain what happens as an object moves through each phase of matter.
ASAP PLEASE ????????
Explanation:
gas vibrate and move freely at high speeds, liquid vibrate, move about and slide past each other. solid vibrate (jiggle) but generally do not move from place to place
Define one joule heat.
Answer:
The joule is the standard unit of energy in electronics and general scientific applications. One joule is defined as the amount of energy exerted when a force of one newton is applied over a displacement of one meter. One joule is the equivalent of one watt of power radiated or dissipated for one second.
Hope it helps ^^
Certain family dynamics, such as abusive parenting, can increase the susceptibility of someone developing a(n) __________ disorder.
Answer:
personality disorder
Explanation:
Certain family dynamics, such as abusive parenting, can increase the susceptibility of someone developing a(n) personality disorder.
How does a person with personality disorder behave?
A disorder is diagnosed when these personality traits are significantly “deviated” from others and are very inflexible, impairing a person's adaptation to everyday situations and causing distress and discomfort in their personal relationships and other areas of life.
Personality disorders are generally pervasive and persistent patterns of thinking, perceiving, reacting, and relating that cause significant distress or functional impairment.
See more about personality disorders at brainly.com/question/27291111