Answer:
Most people when asked, “What is the equation of a line?”, will answer, “y = mx + b”. This is the
equation of a line in what is called slope-intercept form where “m” is the slope and “b” is the yintercept. So, how do you find the equation of a line? There are several different ways that you can find
the equation of a line. I find the equation of a line everytime by following the same three steps:
Step 1: Find the slope of the line.
Step 2: Use the slope to find the y-intercept.
Step 3: Use steps 1 and 2 to write the answer.
I will explain these steps by looking a several examples. Please understand that there are often several
different ways to complete each math problem, but I have found through the years that students are most
successful when the do problems the same way each and every time they attempt the problem. If you
know a different way to find the answer that is great, but I am going to show how to do the problem one
way and use the same technique everytime I see this problem.
Explanation:
The ratio of number of revolution to the radius of the tire will be constant since the distance is constant. 16 - inch radius tire will require 75 revolutions to travel the same distance.
CIRCULAR MOTIONWhen all points in a body move in concentric circles is known as rotational or circular motion. Below are few facts about circular motion.
Speed is constantVelocity keeps changingAcceleration acts toward the center.Given that the number of revolutions N made by a tire traveling over a fixed distance D varies inversely to the radius r of the tire. That is
N [tex]\alpha[/tex] 1/r
N = K/r
K = Nr
Where K = Proportionality constant
If a 12-inch radius tire makes 100 revolutions to travel a certain distance, Then,
K = 100 x 12
K = 1200 rev inches
How many revolutions would a 16-inch radius tire require to travel the same distance?
by applying the same formula, let us substitute r for 16 inches and 1200 for K
K = Nr
1200 = N x 16
N = 1200/16
N = 75 revolutions
Therefore, 16 - inch radius tire will require 75 revolutions to travel the same distance.
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Match the matter to the wave that moves through it.
sound wave
air
earthquake wave
water
ocean wave
land
Answer:
Explanation: that’s all
Use the drop-down menus to identify the variables for the first hypothesis.
Hypothesis #1:
As you build circuits, you will alter voltage, which is the
variable. You will measure how changing the
resistance affects the current, which is the
variable. A "constant" is a parameter that stays the same
regardless of the other variables, and in this case,
is held constant.
Answer:
ind, dep, resistance
Explanation:
In a circuit, the voltage is an independent variable and current is a dependent variable, while the resistance is a constant parameter.
What is Ohm's law ?Ohm's law states that, the amount of current flowing through an electrical circuit is directly proportional to the voltage applied across the circuit.
Here,
According to Ohm's law,
Voltage [tex]\alpha[/tex] Current
V [tex]\alpha[/tex] I
V = a constant x I
V = IR
where, R is the resistance of the circuit.
Therefore, we can say that the resistance in the circuit is a constant parameter.
So, the voltage and current are the variable parameters, while the resistance remains the same.
Also voltage is an independent variable and current is a dependent variable.
Hence,
In a circuit, the voltage is an independent variable and current is a dependent variable, while the resistance is a constant parameter.
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Un motociclista arranca desde el reposo y mantiene una aceleración constante de 0.14 m/s^2. Calcular: a) En que tiempo recorrerá una distancia de 1.3 Km/h b) Qué rapidez llevará en ese tiempo en m/s y en Km/h *
Answer:
[tex]136.28\ \text{s}[/tex]
19.08 m/s or 68.688 km/h
Explanation:
a = Aceleración = [tex]0.14\ \text{m/s}^2[/tex]
s = Desplazamiento = [tex]1.3\ \text{km}=1300\ \text{m}[/tex]
u = Velocidad inicial = 0
t = Tiempo empleado
De las ecuaciones cinemáticas obtenemos
[tex]s=ut+\dfrac{1}{2}at^2\\\Rightarrow 1300=0+\dfrac{1}{2}\times 0.14t^2\\\Rightarrow t=\sqrt{\dfrac{1300\times 2}{0.14}}\\\Rightarrow t=136.28\ \text{s}[/tex]
El tiempo necesario para recorrer una distancia de 1,3 km es [tex]136.28\ \text{s}[/tex]
[tex]v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 0.14\times 1300+0}\\\Rightarrow v=19.08\ \text{m/s}=19.08\times 3.6=68.688\ \text{km/h}[/tex]
La velocidad final del automóvil es 19.08 m/s so 68.688 km/h.
Help with 7 - 9 please!
Answer:
Try lookin those questions up on Brainly
Explanation:
Why are paperclips attracted to magnets? Group of answer choices They contain silver They contain aluminum They contain tin They contain iron
Answer:
They contain iron.
Explanation:
Iron is made of metal and magnets attract to metal Iron.
A stone of weight 1 N falls downwards. Its g.p.e.
decreases by 100 J. How far has it fallen?
Answer:
h = 100 m
Explanation:
Given that,
The weight of a stone, W = 1 N
It falls downwards. Its gravitational potential energy decreases by 100 J.
We need to find how far it is fallen.
The gravitational potential energy of an object is given by :
E = mgh
h is from where it has fallen
[tex]h=\dfrac{E}{mg}\\\\h=\dfrac{100}{1}\\\\h=100\ m[/tex]
So, it has fallen 100 m.
In the chemical equation above, the small number after the O in 1202 represent —
Answer:
G.) The number atoms of that element in the molecule
Explanation:
F is incorrect because the coefficient represents the amount of one type of molecule, not the subscript
G is correct because subscripts represent how many atoms of that element are present in that single molecule
H is incorrect because energy is not represented in this simple type of equation
J is incorrect because it doesn't even make sense
What is the mass of an object that requires a force of 30 N to accelerate at 5 m/s2?
Answer:
6 Kg.
Explanation:
From the question given above, the following data were obtained:
Force (F) = 30 N
Acceleration (a) = 5 m/s²
Mass (m) =?
Force (F) is defined as the product of mass (m) and acceleration (a). Mathematically, it can be expressed as:
Force (F) = mass (m) × acceleration (a)
F = ma
With the above formula, we can obtain the mass of the object as follow:
Force (F) = 30 N
Acceleration (a) = 5 m/s²
Mass (m) =?
F = ma
30 = m × 5
Divide both side by 5
m = 30 / 5
m = 6 Kg
Therefore, the mass of the object is 6 Kg
If the speed of an object increases, the kinetic energy will ______________ because _____________________________________.
An object has Ep of 220 J after being lifted to a height of 8 m. What is the object's mass?
3.73 kg
5.23 kg
1.67 kg
2.81 kg
Write a hypothesis about the effect of the red light on the population. Use the "if . . . then . . . because . . ." format, and be sure to answer the lesson question: "How does natural selection change the phenotypes within a population over time?"
.............they literally didn't talk about this in class.........
Answer:
yes because if red light was natural then it should cause more damage because that how it is
Answer:
its yes because if red light was natural then it should cause more damage because that how it is
Answer it fast and no spamming....! !
Example 1: Three resisters 10 12,20 ,30 12 ohms, are connected in
(a) Series (b) Parallel. Find the resultant resistance in the circuit.
answer correctly!✌️
Answer:
When the resistances are connected in the parallel the equivalent resistance will be always less than the value of the lowest resistance in the parallel circuit.
The equivalent resistance in the parallel circuit can be calculated using the following formula.
1/R=1/R1+1/R2+1/R3
1/R= 1/10+1/20+1/30
1/R=(6+3+2)/60
1/R=11/60
R=60/11
R=5.45 Ohms
a cruise ship travels directly toward the dock with a velocity of 15 m/s relative to the water. A passenger walks 3 m/s in the same direction as shown in the picture below
Answer:
Explanation:
i believe a if not c
PLAESE ANSWER FAST!!!!! MAKE SURE IT"S RIGHT
How are humans changing the carbon cycle?
Question 2 options:
Humans are burning carbon and putting it into the atmosphere.
Humans are planting more trees to add more oxygen to to the carbon cycle.
Humans are adding carbon to the Earth by over-farming.
Question 3 (0.2 points)
Three hundred years ago, the amount of CO2 flowing into the atmosphere was equal to the amount flowing out of the atmosphere. This is not true today.
Question 3 options:
True
False
Question 4 (0.2 points)
How does carbon dioxide affect the Earth's climate?
Question 4 options:
While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.
Carbon dioxide mixes with water vapor to take harmful chemicals out of the air.
Carbon dioxide is being added to the soil, which causes weather phenomenon.
(if you have Q1: Carbon is found in: living animals and plants, oceans, rocks, atmosphere, and fossil fuels)
Q2: Humans are burning carbon and putting it into the atmosphere.
Q3: True
Q4: While carbon dioxide is in the air waiting to be reabsorbed it traps the sun's heat.
(and if you have Q5: In the last 250 years, the amount of carbon in the air has increased by 40 percent.)
The useful energy from a computer is carried away from the computer by sound and what else?
light
Explanation:
a computer has a screen and speakers, which produce light and siund
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.46. The weight of the object is 90N. What is the force of friction?
Answer:
the friction force is 41.4N
Explanation:
from f=μ R, where R is the normal reaction. this is equal to the weight of the object
therefore, f = 0.46*90 = 41.4 N
6. A student mixed 100 mL of water at 20°C with 100 mL of water at 80 °C. He briefly stirred the mixture for 10 seconds and measured the temperature. The measured temperature of the mixture of water was —
Answer: 55 degrees celsius
Explanation:
The measured temperature of the mixture of water was 50°C.
What is thermal equilibrium?When two physical systems are connected by a heat-permeable path, they are in thermal equilibrium if there is no net flow of thermal energy between them.
The zeroth law of thermodynamics governs thermal equilibrium. A system is said to be in thermal equilibrium with itself if the temperature within it is uniform and constant over time.
Initial temperature of 100 mL of water is 20°C
and Initial temperature of 100 mL of water is 80°C
Let at thermal equilibrium, temperature of the mixture is t° C.
Hence, at thermal equilibrium,
100 mL × ρ × ( t - 20°C) × s = 100 mL × ρ × ( 80°C -t) × s
t - 20° C = 80°C -t
2t = 100°C
t = 50°C
Hence, the measured temperature of the mixture of water was 50°C.
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What..please help me
Answer:
the answer would be the first choice!
Explanation:
( Interactions of the Earth) (Moon, and Sun: Mastery Test Place) the phases of the Moon in the correct order, starting with the new Moon. first-quarter Moon 1 new Moon full Moon 1 gibbous Moon crescent Moon |
Answer:
crest moon
Explanation: because you ar etalking about moons
Please please help you will get the brainlest
Answer:
1. 40/20=2meters per second
2. 0
3.240/20=12 meters per second
A block of wood weighing 30N and of specific gravity 0.75 is ties by a string to the bottom of a tank of water in order to have the block totally immersed.What is the tension of the string?
Which will have a larger momentum when moving at the same speed: a 2,000-kg truck or a 1,000-kg sedan
Answer:
2000 kg
Explanation:
Given that Which will have a larger momentum when moving at the same speed: a 2,000-kg truck or a 1,000-kg sedan
According to the definition of momentum, momentum is the product of mass and velocity.
That is,
Momentum = mass × velocity
Since velocity or speed is the same, then, the one of higher mass will have a greater momentum.
Therefore, the 2000 kg truck will have the greater momentum.
A truck will have a larger momentum as compared to sedan because the weight of truck is higher than sedan.
What is momentum?Momentum is defined as the product of the mass of a particle and its velocity.
Momentum is directly proportional to mass and velocity which means if mass increases the momentum of that body is also increases so we can conclude that truck has higher momentum.
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PLEASE HELP!!!!
People can expect worldwide governmental agencies and regulations to "clean up" all the environmental problems.
True
False
Answer: Local governments can resolve a conflict by cooperating and spreading the costs of expensive projects. What kinds of problems cause state governments to help local governments? No economic growth or improvements are problems that cause governments to help local governments.
Answer its false
Explanation:
A 1,100 kg car is traveling initially 20 m/s when the brakes are applied. The brakes apply a constant force while bringing the car to rest.
To the nearest kilojoule, how much work is performed by the brakes in bringing the car to rest?
Answer:
Work done = -220,000 Joules.
Explanation:
Given the following data;
Mass = 1100kg
Initial velocity = 20m/s
To find workdone, we would calculate the kinetic energy possessed by the car.
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where,
K.E represents kinetic energy measured in Joules. M represents mass measured in kilograms. V represents velocity measured in metres per seconds square.Substituting into the equation, we have;
[tex] K.E = \frac{1}{2}*1100*20^{2}[/tex]
[tex] K.E = 550*400[/tex]
K.E = 220,000J
Therefore, the workdone to bring the car to rest would be -220,000 Joules because the braking force is working to oppose the motion of the car.
Fill in the blank: A _____________ circuit is when there is only one path to and from the power source.
Answer:
Series.
Explanation:
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex] V = IR[/tex]
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
A series circuit is when there is only one path to and from the power source. Thus, the amount of current flowing through the circuit is the same while the voltage is given by the summation of each voltage across each component in the electrical circuit.
Suppose a cheetah running at a velocity of 5 m/s east slows down. After 15 seconds, the cheetah has reached a velocity of 25 m/s. What is the
cheetah's acceleration?
Answer:
1.33m/s²
Explanation:
Given parameters:
Initial velocity = 5m/s
Final velocity = 25m/s
Time taken = 15seconds
Unknown:
Acceleration = ?
Solution:
Acceleration is the rate of change of velocity with time.
Acceleration = [tex]\frac{v - u}{t}[/tex]
v is the final velocity
u is the initial velocity
t is the time taken
So;
Acceleration = [tex]\frac{25 - 5}{15}[/tex] = 1.33m/s²
What is the net force acting on this cart ?
Explanation:
There is a force of 3N acting towards the left and 2 forces of 4N each acting towards the right.
Net force = (4N) + (4N) - (3N) = 5N towards the right.
P.S. We subtract the 3N force because the forces are in opposite directions.
A wooden block has a mass of 12 kg and is experiencing a force of 6 N. Calculate the acceleration that the wooden block will experience. Give your answer to ONE DECIMAL PLACE.
Maya uses a tuning fork of frequency 250 Hz to produce transverse wave on a stretched string. Her friend justin measure the distance between the two consecutive crest on the string as 5 cm.What was the velocity of the wave?
Answer:6.25m/s
Explanation:
V=F*lander
V=FL/2=250*0.05/2
Solar energy and hydroelectric energy are important sources of energy. Find out more about either one of these forms of energy. What is being done to make it a more efficient source of energy, and where it is being used in the United States?
Answer:
Question: Find out more about either one of these forms of energy
Answer:
Solar energy: This is energy generated from the sunlight, and it can be converted to other energy that can be useful. Solar energy from the sun considered a clean source of electricity can be converted to a usable electricity source or stores the light in batteries for thermal use. This energy conversion is possible through the use of solar panels attached to where the conversion would take place so as to capture the light from the sun.
Question: What is being done to make it a more efficient source of energy
Answer:
1. When using solar energy to power homes, it is more efficient to have panels on a green roof because of the characteristics of this roof not to reflect or lose more light from the sun.
2. Improvements on the type of solar cell to use for instance that are cheaper and could maximize the energy from the sun are all ways that make it more efficient.
3. Since solar panels don't produce energy at night, usage of batteries that could store electricity during the day or when the sun is not obscured would make solar more efficient.
Question: where it is being used in the United States?
Answer:
1. California
2. Nevada
3. New York
4. Texas
