Answer:
Believe it or not, cold does not actually exist.
Explanation:
What you're experiencing when you experience cold, is the absence of heat. Temperature is the energy of clashing atoms. A cubic meter of deep space would make you freeze instantly due to the lack of atoms.
Hope this helps :)
Which force represented by the arrow at B? a. force of friction b. force of gravity c. tension force d. normal force
Answer:
A. Force of friction
Explanation:
Find the diagram attached
From the diagram we can see that the force B is acting up on the body along the plane. This force is the force that prevents the body from sliding down the plane. Originally, the body on the line will tend to slide down the incline even without application of a force hence the reason of an opposing force that must act in the opposite direction is counter this motion to make the body be in a state of equilibrium. Hence the required force is force of friction since it is am opposing force acting in the direction opposite to the moving force acting on the body.
Write one to two sentences explaining whether this passage from the story is exposition, rising action, climax, or resolution: “The announcer turned to point to the winner and found himself alone. Arm in arm the champions had already left the ring.”
Answer:
This passage is part of the resolution because it shows what happens after the climax. It wraps up the conflict, and then the story is over.
Explanation: cause I am smart thats why
I need help with this answer
Answer:
double replacement
Explanation:
sorry if im wrong
the_____ climate is the coldest climate region and includes
Answer:
the POLAR climate is the coldest climate region and includes...
Explanation:
It includes the ice cap ,and Artic and tundra climates
Bicycle in its writers have combined a mass of 80 kg in a speed of 6.0 meters per Second what is the magnitude of the average force needed to bring bicycle in its writers to stop in 4.0 seconds please help !!!
Answer:
F = 120 N
Explanation:
Force x distance = energy
The bike has energy 1/2 . 80 . 6^2 = 1440 J
You are looking at an example of not reading the question properly.
Impulse = Force . time = change in momentum
F . 4 = 80 .6
F = 120 N
A 30-gram arrow, moving at 60 m/s, hits a stationary 240-gram apple. The arrow passes through the apple, and is measured on the other side, moving at 55 m/s. What is the final velocity of the apple?
Answer: ouch
Explanation:
Hooke's law describes a certain light spring of unstretched length 32.1 cm. When one end is attached to the top of a doorframe and a 7.94 kg object is hung from the other end, the length of the spring is 42.4 cm. (a) Find its spring constant. .7554 Correct: Your answer is correct. kN/m (b) The load and the spring are taken down. Two people pull in opposite directions on the ends of the spring, each with a force of 178 N. Find the length of the spring in this situation. .7923 Incorrect: Your answer is incorrect.
Answer:
[tex]0.75623\ \text{kN/m}[/tex]
[tex]55.6\ \text{cm}[/tex]
Explanation:
m = Mass of object = 7.94 kg
g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
x = Change in length of the spring = [tex](42.4-32.1)\ \text{cm}[/tex]
F = Force on the spring
Force of gravity on the object and the force on the spring will be equal
[tex]mg=kx\\\Rightarrow k=\dfrac{mg}{x}\\\Rightarrow k=\dfrac{7.94\times 9.81}{0.424-0.321}\\\Rightarrow k=756.23\ \text{N/m}[/tex]
The spring constant is [tex]756.23\ \text{N/m}=0.75623\ \text{kN/m}[/tex]
F = 178 N
Force on spring is given by
[tex]F=kx\\\Rightarrow x=\dfrac{F}{k}\\\Rightarrow x=\dfrac{178}{756.23}\\\Rightarrow x=0.235\ \text{m}=23.5\ \text{cm}[/tex]
The length of the spring will be [tex]32.1+23.5=55.6\ \text{cm}[/tex].
One cubic meter of a saturated soil sample has a total mass of 2400 kg. The solids have a specific gravity of 2.70. The dry density of the soil is most nearly:
Answer:
6480kg/m³
Explanation:
Specific gravity is expressed as;
S = density of substance being measured/Density of the reference sample
Reference sample is the saturated soil
Density of the saturated soil = Mass/Volume
Density of the saturated soil = 2400/1
Density of the saturated soil = 2400kg/m³
Given
Specific gravity = 2.70
Get the dry density of the soil
Dry density of the soil = Specific gravity * Density of the saturated soil
Dry density of the soil = 2.70 * 2400
Dry density of the soil = 6480kg/m³
Hence the dry density of the soil is most nearly 6480kg/m³
How do insects aid in crime scene investigations
Answer:
They can figure out when the person died, possibly the nature of crime, it can also detect if the body was moved in certain area.
Explanation:
The highest surface temperature on any of the solar system’s planets is found on Venus. Partly because of its nearness to the sun and partly because of the extreme pressure of its atmosphere, the average daytime temperature on Venus is 453°C. What is this temperature in degrees Fahrenheit and in kelvins?
Answer:
Fahrenheit ⇒ 847.4 °FKelvin ⇒ 726.15KExplanation:
To convert Celsius to Fahrenheit, use the following formula;
= (°C * 9/5) + 32
= (453 * 9/5) + 32
= 847.4 °F
To convert Celsius to Kelvin, use the following;
= °C + 273.15
= 453 + 273.15
= 726.15K
What causes sound energy to be produced? *
Speed
instruments
Vibration
Fluency
Describe the role of the
nucleus in cell activities.
Answer:the nucleus controls and regulates the activities of the cell
Explanation:trust me bro
Answer:
The nucleus controls and regulates the activities of the cell and carries the genes, structures that contain the hereditary information.
What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to 14 REarth before coming to rest momentarily
Answer:
v = 1.078 10⁴ m / s
Explanation:
To solve this exercise we can use conservation of mechanical energy
Starting point. Just clearing
Em₀ = K + U = ½ m v² - G m M / [tex]R_{e}[/tex]
Final point. At r = 14R_{e}
Em_{f} = U = -G m M / 14R_{e}
how energy is conserved
Em₀ = [tex]Em_{f}[/tex]
½ m v² - G m M /R_{e} = -G m M / 14R_{e}
½ v² = G M / R_{e} (-1/14 + 1)
v² = 2 G M / R_{e} 13/14
we calculate
v² = 2 6.67 10⁻¹¹ 5.98 10²⁴ / 6.37 10⁶ 13/14
v = √ (1,16 10⁸)
v = 1.078 10⁴ m / s
The launch speed of a projectile that rises above the earth will be
v = 1.078 10⁴ m / s
What is speed?
Speed is defned as the movement of any object with respect to the time the formula of speed is given as the ratio of the distance with time.
To solve this exercise we can use conservation of mechanical energy
Starting point. Just clearing
[tex]E_{mo} = K + U = \dfrac{1}{2}m v^2 - \dfrac{G m M} { r}[/tex]
Final point. At[tex]r = 14R_{e}[/tex]
[tex]Em_{f} = U = \dfrac{-G m M }{14R_{e}}[/tex]
how energy is conserved
[tex]E_{mo }= \dfrac{1}{2} m v^2 -\dfrac{-G m M }{R_{e}} = \dfrac{-G m M }{ 14R_{e}}[/tex]
[tex]\dfrac{1}{2} v^2 = \dfrac{G M }{ R_{e} (\dfrac{-1}{14} + 1)}[/tex]
[tex]v^2 = \dfrac{2 G M} { R_{e} \dfrac{13}{14}}[/tex]
we calculate
[tex]v^2 = \dfrac{2 6.67 \times10^{-11}\times 5.98 \times 10^{24}} { 6.37 \times 10^{6} \times \dfrac{13}{14}}[/tex]
[tex]v = \sqrt{ (1,16\times 10^8)}[/tex]
v = 1.078 10⁴ m / s
Hence the launch speed of a projectile that rises above the earth will be
v = 1.078 10⁴ m / s
To know more about speed follow
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Lenders are prohibited from
using borrowers' information in a responsible manner.
explaining to borrowers why their application was rejected.
considering borrowers' sources of income other than salary.
considering borrowers 'race, sex and national origin.
Answer:
Considering borrowers race sex and national origin
Explanation:
Edge
Lenders are prohibited from considering borrowers' race, sex and national origin.
What is borrowing?Receiving something that will eventually be returned is the act of borrowing. In finance and economics, obtaining money is typically referred to as borrowing.
Simply put, borrowing is the act of obtaining money with the understanding that it will be required of the recipient to repay the same amount after a predetermined period of time. Most often, people or even various financial institutions may lend money.
The most dependable place to get financial aid is from banks. Apart from banks, consumers also frequently borrow money from consumer financing companies and other businesses.
Lenders are allowed to use borrowers' information in a responsible manner; explain to borrowers why their application was rejected, consider borrowers' sources of income other than salary. But lenders are prohibited from considering borrowers 'race, sex and national origin.
To learn more about borrower, refer the link:
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#SPJ6
types of polarization physics
Answer:
Linear polarization.
Circular polarization.
Elliptical polarization.
2. What is the kinetic energy of an 80 kg football player running at 8m/s? *
O A. 2560J
O B. 320J
O C. 2560 W
O D.320 W
HELPPPPP
Answer:
the answer is A!! 2560 J
Compare the gravitational force the sun exerts on Earth to the gravitational force Earth exerts on the sun.
Answer:
as
Mass of sun > Mass of earthTherefore, the sun will exert more gravitational force on earth.
Explanation:
While comparing the gravitational force exerted by two objects, we need to observe which object has a greater mass.
The object with the greater mass exerts a more gravitational force on the other object.We know that mass of the sun is about 1.99 x 10³⁰ kg, and the earth's mass is only 6.0 x 10²⁴.
as
Mass of sun > Mass of earthTherefore, the sun will exert more gravitational force on earth.
A spacecraft heading for Pluto will take pictures of several other planets on its way. The above equation gives the distance, ddd, in millions of kilometers, of the craft from its first photo opportunity with Mars in terms of the time, ttt, in days. What is the meaning of the 212212212 in this equation
Answer:
The maximum number of days for the trip
Explanation:
Given
[tex]d = 1.06(212 - t)[/tex] --- Missing Equation
Required
What does d represent?
From the question, we understand that t represent the number of days;
So, by default 212 represent days
Going further:
For the equation, [tex]d = 1.06(212 - t)[/tex] to be valid; the value of t must be within the interval;
[tex]0 \le t \le 212[/tex]
When [tex]t = 0;[/tex]
that is the beginning of the journey
As t increases;
212 - t decreases
Until the point where t = 212,
This signifies the end of the journey
So: 212 - t indicates a particular day between 0 and 212.
Hence, 212 represents the maximum number of days for the trip.
Define neutralization
Answer:
neutral
Explanation:
ization
Answer:
A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.
Explanation:
4
2 points
Which of the following is a vector quantity?
O Velocity
O
Time
Speed
оо
Distance
Answer:
Velocity Has vector Quantity
Which one of the the following occurs when sodium forms an ionic bond?
Answer:
An atom of sodium (Na) donates one of its electrons to an atom of chlorine (Cl) in a chemical reaction, and the resulting positive ion (Na+) and negative ion (Cl−) form a stable ionic compound (sodium chloride; common table salt) based on this ionic bond.
Explanation:
All the info i can give you
Page 1:Page 2:
A web chart titled Map with a center circle connected to 4 outer circles.
Of the two organizational aids, which one would be the most useful for showing chronological order: the web or the sequence chart?
Answer:
or the other answer is venn diagram if your on another question
Explanation:
Answer:
the answer is c on edg
Explanation:
A pilot engages the control wheel steering (CWS) of a conventional autopilot and carries out a manoeuvre in roll. When the control wheel is released, the autopilot will:
Answer: Maintain the flight altitude obtained at that moment.
Explanation:
An autopilot is a system used without the pilot's direct assistance to guide an aircraft. Only a steady heading and altitude could be maintained by early autopilots, but modern autopilots are capable of monitoring any aspect of the flight envelope from just after take-off until landing.
About how far apart must you hold your hands for them to be separated by 1.6 nano-light-second (the distance light travels in 1.6 ns)? Assume that the speed of light is 2.998*108 m/s.
Answer:
d = 0.479 m
Explanation:
Given that,
The distance light travels in = 1.6 ns
The speed of light is [tex]2.998\times 10^8\ m/s[/tex]
The speed of an object is given by distance traveled divided by time.
[tex]c=\dfrac{d}{t}\\\\d=ct\\\\d=2.998\times 10^8\times 1.6\times 10^{-9}\\\\=0.479\ m[/tex]
Hence, the required distance is 0.479 m.
What type of energy transfer occurs
when two objects touch?
O conduction
O induction
O convection
Answer:
conduction
Explanation:
Read each scenario and then answer the question. Scenario A: A 3 StartFraction N over m EndFraction spring is compressed a distance of 1.0 m. Scenario B: A 6 StartFraction N over m EndFraction spring is compressed a distance of 0.8 m. Scenario C: A 9 StartFraction N over m EndFraction spring is compressed a distance of 0.6 m. Scenario D: A 12 StartFraction N over m EndFraction spring is compressed a distance of 0.4 m. Which scenario generates the most elastic potential energy?
Answer:
The correct answer is B
Explanation:
Answer:
B
Explanation:
edge2o2o
The writing on the passenger-side mirror of your car says "Warning! Objects are closer than they appear." There is no such warning on the driver's mirror. Consider a typical convex passenger-side mirror with a focal length of -80 cm . A 1.5 m -tall cyclist on a bicycle is 30 m from the mirror. You are 1.4 m from the mirror, and suppose, for simplicity, that the mirror, you, and the cyclist all lie along a line.
- You are 2.2 m from the image of the cyclist
A) What is the image height?
B) What would the image height have been if the mirror were flat?
C) What is the angular size of the image of the cyclist?
D) What would the angular size of the cyclist's image have been if the mirror were flat?
E) Explain why is there a warning label on the passenger-side mirror?
Answer:
kdfjnfkasd
Explanation:
Why do you think the process of photosynthesis and respiration are interrelated?
Answer:
The processes of photosynthesis and respiration are interrelated because the products of such processes are used as reactants for one process. One product of photosynthesis is oxygen. This oxygen is used in the process of respiration as a reactant producing carbon dioxide which is used as a reactant for photosynthesis.
A person pushes a 10 kg box from rest and accelerates it to a speed of 4 m/s with a constant force. If the box is pushed for a time of 2.5 s, what is the force exerted by the person?
The box is accelerated from rest to 4 m/s in a matter of 2.5 s, so its acceleration a is such that
4 m/s = a (2.5 s) → a = (4 m/s) / (2.5 s) = 1.6 m/s²
Then the force applied to the box has a magnitude F such that
F = (10 kg) (1.6 m/s²) = 16 N
What is the correct Lewis structure for group 5A element, arsenic?
Answer:
A
Explanation:
Because Arsenic is in group 15 it will receive 5 valence electrons Start out by adding one dot around the symbol for Arsenic. You'll end up with 4 around it and all you have to do is add another one.
