Answer:
There is always space (vacuum) between particles. The particles are small objects that exist in (sometimes vast) empty space. In gas particles there's a lot more space between the particles; the particles fly around in vacuum, bumping into each other.
1. Calculate the molecule fraction at 650K and 800K when
the activation energy, Ea,
(a) 15 kJ mol
(b) 150 kJ mol
(c) 300 kJ mol
Answer:
I think it's B, I may not be right so take this with a grain of salt
Explanation:
A horizontal force of 12N is applied to 1.5kg of block which rests on a horizontal surface. If the coefficient friction is 0.3, find the acceleration produced in the block. (take g=10m/s^2).
Class 11 Physics
Please answer asap!!
Answer:
7 m/s²
Explanation:
From the question given above, the following data were:
Force applied (Fₐ) = 15 N
Mass (m) of block = 1.5 Kg
Acceleration due to gravity (g) = 10 m/s²
Coefficient of friction (μ) = 0.3
Acceleration (a) of block =?
Next, we shall determine the frictional force. This can be obtained as follow:
Mass (m) of block = 1.5 Kg
Acceleration due to gravity (g) = 10 m/s²
Coefficient of friction (μ) = 0.3
Normal reaction (R) = mg = 1.5 × 10 = 15 N
Frictional force (Fբ) =?
Fբ = μR
Fբ = 0.3 × 15
Fբ = 4.5 N
Next, we shall determine the net force acting on the block. This can be obtained as follow:
Force applied (Fₐ) = 15 N
Frictional force (Fբ) = 4.5 N
Net force (Fₙ) =.?
Fₙ = Fₐ – Fբ
Fₙ = 15 – 4.5
Fₙ = 10.5 N
Finally, we shall determine the acceleration produced in the block. This can be obtained as follow:
Mass (m) of block = 1.5 Kg
Net force (Fₙ) = 10.5 N
Acceleration (a) of block =?
Fₙ = ma
10.5 = 1.5 × a
Divide both side by a
a = 10.5 / 1.5
a = 7 m/s²
Therefore, the acceleration produced in the block is 7 m/s²
Rahul is carrying a load of 80 kg a distance of 200m in 5 minutes but the same lord is carried by Reena to the same distance in 4 minutes who has. more power.
Answer:
Reena has more power.....
Hope it helps!!!
A 7.0kg object rests on a horizontal frictionless surface. What is the magnitude of the horizontal
force that is required to accelerate it at the rate of 2.3m/s2
?if you can show work it would be perfect
Answer:
16.1 N
Explanation:
From the question,
F = ma.............................. Equation 1
Where F = horizontal force, m = mass of the object, a = acceleration .
Given: m = 7.0 kg, a = 2.3 m/s²
Substitute this values into equation 1
F = (7.0×2.3)
F = 16.1 N.
Hence the magnitude of the horizontal force is 16.1 N
Timed plz hurry
Enlarged brain ventricles are presumed to signify
A. an excess of dopamine activity
B. frontal lobe abnormalities
C. development of brain tissue
D. a deterioration of brain tissue
Answer:
D. a deterioration of brain tissue
A deterioration of brain tissue cause enlargement of brain ventricles
When an injury or illness alters the circulation of CSF, one or more of the ventricles becomes enlarged as CSF accumulates. In an adult, the skull is rigid and cannot expand, so the pressure in the brain may increase profoundly. Hydrocephalus is a chronic condition in which is the buildup of fluid in the cavities (ventricles) deep within the brain. It can be controlled, but usually not cured.What is CSF?Cerebrospinal fluid (CSF) is a clear, colorless liquid found in your brain and spinal cord. They combinedly form central nervous system.Central nervous system controls and coordinates everything you do including muscle movement, organ function, and even complex thinking and planningHence, D) is the correct option.
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Timed please hurry
Dissociative identity disorder is the feeling of becoming separated from prior memories after wandering away from
home.
A. True
B. False
Dissociative identity disorder is not the feeling of becoming separated. Therefore the given statement is false.
What is Dissociative identity disorder?It is known as the multiple personality disorder. It should be useful for switching purpose for having the alternate the identities.
So based on this, we can say that it does have the feeling of separation from the past memories.
hence, the option b is correct.
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A ball has a mass of 140 g what is the force needed to accelerate the mall at 25 m/s squared
Answer:
[tex]\boxed {\boxed {\sf 3.5 \ Newtons}}[/tex]
Explanation:
Force is the product of mass (in kilograms) and acceleration (in meters per square second).
[tex]F=ma[/tex]
The mass of the ball is 140 grams and the acceleration is 25 m/s². Convert grams to kilograms.
1 kg=1000 g[tex]140 \ g *\frac{1 \ kg}{1000 \ g}=\frac{140}{1000} \ kg =0.14 \ kg[/tex]Substitute the values into the formula.
[tex]F= 0.14 \ kg * 25 \ m/s^2[/tex]
Multiply.
[tex]F= 3.5 \ kg*m/s^2[/tex]
1 kilogram meter per square second is equal to 1 NewtonOur answer equals 3.5 Newtons[tex]F= 3.5 \ N[/tex]
3.5 Newtons of force are required.
Which organ allows the exchange of oxygen and carbon dioxide?
Answer:
Respiratory System
The organ which allows the exchange of oxygen and carbon dioxide is the Lungs of our body
What are the organs of our body?The five organs in the human body are thought to be essential for survival. The heart, brain, kidneys, liver, and lungs are among them.
Blood flow across the body is maintained by the heart, which is situated in the middle of the chest.
The brain, which sits inside the skull, serves as the body's control centre.
On either side of the body, near the rear of the abdomen, lie the two kidneys.
Given data ,
Let the organ of our body be represented as A
Now , it allows the exchange of oxygen and carbon dioxide
The lungs is an important organ in our body
We can breathe thanks to our respiratory system and lungs. They expel carbon dioxide and inspire oxygen into our bodies, a process known as inspiration or inhalation (called expiration, or exhalation).
The process of breathing involves the exchange of oxygen and carbon dioxide.
Hence , the organ responsible for the exchange of oxygen and carbon dioxide is the lungs
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All of the following are possible transition points that occur during adulthood except __________.
A.
marriage
B.
rapid physical growth
C.
parenthood
D.
divorce
Answer:
B
Explanation:
.....................
Answer:
B. Rapid Physical Growths
A boy projects a ball vertically upwards with velocity v from
the top of a building where it rises and then it falls down to hit
the ground with velocity 2v. So, the total distance covered by
the ball is ....
(g = 10 m/s)
Answer:
yes? what is the quseten
Explanation:
v is the max speed it can go if you droped a egg and a watermelon off a roof 20ft high thay would hit the ground at the same time becuse gravaty will effect them qualy. if you drop them from a jet liner 20,000 ft up thay will hit max.v. wich depends on mass so thay will hit at differnt times.
A 2.3 kg ball is held 20 m above the ground and released. How fast is
It moving when it hits the ground?
Answer: mgh = 0.5 mv^2 solve v = square root( 2g h)
Explanation: first mass have potential energy mgh
It is converted to kinetic energy 0.5mv^2
A child pulls a sled by a rope across the lawn at a constant speed. Of the forces listed, identify which act upon the sled.
at Niagara Falls, if 505 kg of water fall a distance of 50.0 m, what is the increase in the internal energy of the water at the bottom of the falls? Assume that all of the initial potential energy goes into increasing the water's internal energy and that the final kinetic energy is zero
Answer:
Hope that helps
Explanation:
the increase in the internal energy of the water at the bottom of the falls
= mgh
= 505 * 9.81 * 50
= 247703 J ----answer
Answer:
247702.5 J
Explanation:
the question says that all of the initial potential energy is transferred into internal energy, meaning we have to find PEi
PE=mgh
m=505 kg
g=9.81 m/s^2
h=50 m
=>505(9.81)(50)= 247702.5
the internal energy increased by 247702.5 J
Can you answer these questions would mean so much grades are due next week and im just really busy will give 35 points
Answer:
C.) X-Rays
B.) Focus
A.) Laser
B.) 38 x 10^-16 Joules
How to Measure the mass of a coin using a triple beam balance
Answer:
https://youtu.be/stW-C7F7QOg
Three resistors having resistances of 1.10 .3.00
, and 5.00 are connected in series to a 26.0V battery that has negligible internal resistance.
A)
Find the equivalent resistance of the combination
Req = 9.10
B) Find the current in through 1.10 resistor
B)
Find the current in through 1.10 ?
List 3 things both geocentric and heliocentric were goods at explaining
Speed versus Time
The graph below suggests
A. a constant speed of 3 m/s followed by speed of 1 m/s
B. a constant velocity of 2 m/s followed by speed of zero
C. a constant speed of 4 m/s followed by speed of zero
D. a constant acceleration of 2 m/s followed by speed of zero
F. a constant speed of 2 m/s followed by speed of zero
Answer:
a constant speed of 2 m/s followed by speed of zero
Explanation:
I got it right on the test.
An object of mass m1= 5kg placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging object of mass m2= 8kg as shown in figure.
Calculate,
(a) the acceleration (a) of the objects
(b) the tension (T) in the string.
(a) The acceleration of the objects (in m/s2) is
Answer for part 1
(b) The tension in the string (in Newtons) is
Answer for part 2
Answer:
a. 6.04 m/s^2 (3 sig. fig.) b. T = 30.2 N
Explanation:
a) Assume that the acceleration due to gravity is 9.81 m/s^2 downwards
8x9.81 = (5+8)a
a = 6.04 m/s^2 (3 sig. fig.)
b) Using the results from (a)
T = 5(6.04)
T = 30.2 N
A 2.50 kg ball moving at 7.50 m/s is caught by a 70.0 kg man while the man is standing on ice. How
fast will the man / ball combination be moving after the ball is caught by the man?
Explanation:(2.5kg) (7.5) m/s +70 kg(0) =(2.5kg +70 kg (v3) 18. 75 =72.5 =v3
v3=.26m/s 2.5+70
In these chemical equations, each of the letters J through M represents a different element. Which equation is balanced?
A.
3J2K + L2M3 → 3JM + L2K3
B.
JK + L2M → JM + 2LK
C.
2JK + 3L2M → 3LK + J2M3
D.
2JK3 + 3L2M → 6LK + J2M3
Answer:
D. 2JK3 + 3L2M --> 6LK + J2M3
Explanation:
What do you mean by infracture of business?
Answer: Infrastructure is the general term for the basic physical systems of a business, region, or nation. and it involves the production of public goods
Explanation:
15. A conductor has a surface charge density of 300nC/m^2. If the area of the conductor is
15m^2 what is the electric flux through the given area of the conductor (60= 8.85 x 10^-12C^2Nm?).
(a) 5.08 x10Nm²/C
(b) 2.08 x 10Nm2/C
(c) 1.08 x10
Nm²/C
(d) 0.08 x 10Nm2/C
E = sigma/2 * epselon naught
E = 300 * 10^-9/(2 * 8.854 * 10^-12)
E = 1.7 * 10^4 N/C
Assuming that the electric field is uniform all across the surface:
Then, Electric flux = E * A
Electrix flux = 1.7 * 10^4 * 15 = 2.5 x 10^5 Nm^2/C
It should be b)
The electric flux through the given area of the conductor is
2.26 x 10³ Nm²/C.
Surface charge density of the conductor, σ = 300 x 10⁻⁹ C/m²
Area of the conductor, A = 15 m²
The equation for surface charge density is,
σ = q/A where q is the charge in the conductor.
So,
Charge, q = σ A
q = 300 x 10⁻⁹/15
q = 2 x 10⁻⁸C
Therefore,
Electric flux through the conductor, Φ = q/ε₀
Φ = 2 x 10⁻⁸/8.85 x 10⁻¹²
Φ = 2.26 x 10³ Nm²/C
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A lever with a mechanical advantage of .4 is more advantageous than just picking up the object with your hands and lifting it up.
True
False
Answer:
true
Explanation:
Lab: Weather Patterns
A weather pattern is defined as a period of time when the weather remains consistent. In the lab, a lot of observation about weather is obtained
What is the definition of a weather pattern?A weather pattern is defined as a period of time when the weather remains consistent. Weather changes are crucial to human existence.
because they influence our everyday activities and provide moisture for crops.
The rain does not always end within the day, and gloomy days might last just as long as sunny days. Tornadoes and hurricanes, for example, may inflict tremendous damage.
In the lab the following observation about weather is obtained;
1. We will find the graphs and statistics that indicate signs of climate change and engage with an interactive graphic.
2. You'll also look at and debate maps of global temperature and precipitation patterns that are changing.
3. This lab will teach you about Earth's biomes and the close relationship that exists between them and the climates that serve to define them.
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PSYW - Please Show Your Work
A radiator made out of iron of specific heat capacity 450 J/kgk has a mass of 45.0 kg
and is filled with 23.0 kg of water of specific heat capacity 4200 J/kgK.
Determine the energy required to raise the temperature of the radiator-water system by
1°K
Answer:
9.66E4 J
Explanation:
We have that the energy required to raise the temperature of the radiator-water system by
1°K
E=116.85KJ
From the question we are told
A radiator made out of iron of specific heat capacity 450 J/kgk has a mass of 45.0 kg and is filled with 23.0 kg of water of specific heat capacity 4200 J/kgK.
Determine the energy required to raise the temperature of the radiator-water system by 1°K
Generally the equation for the Energy is mathematically given as
[tex]E=((mc)_i+mc_w)dt\\\\Therefore\\\\E=(45* 450 +4200*23)1\\\\E=116850J\\\\E=116.85KJ\\\\[/tex]
Therefore
the energy required to raise the temperature of the radiator-water system by
1°K
E=116.85KJ
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This graph shows the path length based on the number of speciation events in a evolution path.
Speciation Events vs. Path Length gradual evolution Path Length punctuational evolution Number of Speciation Events
What does the graph suggest about the evolution path length
a. The punctuational evolution path is the same as the gradual evolution path
b. The gradual evolution path is longer that the punctuational evolution path
c. Gradual evolution does not effect the evolution path length
d. Punctuational evolution does not effect the evolution path length
Answer:
Nbhb
Explanation:
A rain drop of radius 0.3mm has terminal velocity 1m/s in air. The viscosity of air is 18X10-5 poise, then viscous force is
Answer:
F = 1.0178 × 10^(-2) dyne
Explanation:
From stokes law, the viscous force also known as drag force on rain drop is given by the formula;
F = 6πηrv
Where;
η is viscosity
r is radius
v is velocity
We are given;
η = 18 × 10^(-5) poise
r = 0.3 mm = 0.03 cm
v = 1 m/s = 100 cm/s
Thus;
F = 6π × 18 × 10^(-5) × 0.03 × 100
F = 1.0178 × 10^(-2) dyne
What is the fastest bird
Answer:
Peregrine Falcon/hawk
Explanation:
i really dunno if you are talking about brids that can't fly or not.
The specific heat of water in its solid phase (ice) is 2090 J/(kg K), while in the liquid phase (water) its specific heat is 4190 J/(kg K). Water's latent heat of fusion is 333,000 J/kg. If you have a 2kg block of ice at -90°C and you add 1,000,000 J of heat, what is its new temperature?
a. 0°C
b. 14°C
c. 49°C
d. 149°C
Answer:
d. 149 ⁰C.
Explanation:
Given;
mass of the block of ice, m = 2 kg
specific heat capacity of the ice, C = 2090 J/(kgK)
initial temperature of the ice, t₁ = -90 ⁰C
heat added to the ice, H = 1,000,000 J
let the final temperature of the ice = t₂
The final temperature of the ice after adding the heat is calculated as follows;
[tex]H = mC_{ice} \Delta t\\\\H = mC_{ice} (t_2 - t_1)\\\\1,000,000 = 2 \times 2090 \times (t_2 - (-90))\\\\1,000,000 = 4,180(t_2 +90)\\\\1,000,000 = 4,180t_2 + 376,200\\\\1,000,000 - 376,200 = 4,180t_2\\\\623,800 = 4,180 t_2\\\\t_2 = \frac{623,800}{4,180} \\\\t_2 = 149 \ ^0C[/tex]
Therefore, the new temperature of the water is 149 ⁰C.