Answer:
1182.6 billion gallons of gasoline
Explanation:
For the 350 million population of America, one of two people represents half of this population, which is 135/2 = 67.5 million.
The average distance driven per day by this amount of people is 40 miles, and the average mileage is 25 mpg (miles per gallon).
This means that for the forty miles driven per day, the gallon of fuel used is
==> 25 miles = 1 gallon
40 miles = \(x\) gallons.
\(x\) = 40/25 = 1.6 gallons, which means that each of the 67.5 million Americans consumes 1.6 gallons of gasoline on an average, per day.
There are 365 days in a week, so in a year, 365 x 1.6 = 584 gallons of fuel is used by one of these 67.5 million Americans.
Which is 584 x 67.5 million = 39.42 billion gallons per year.
In the next 30 years that is 30 x 39.42 billion gallons = 1182.6 billion gallons of gasoline
Every household has at least one refrigerator, many hotels have ice makers. you may have wondered how much heat energy a refrigerator / ice maker takes
from water to make ice. Compute the amount of energy an
ice maker extracts from 200g of water at 34°c to manufacture ice at 0°c.
Answer:
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Explanation:
you welcome
Hi please help on question! . If answer is correct I'll rate you five stars a thanks and maybe even brainliest! You will even get 54 pts!!
Here is a function machine.
Input : multiply by 6. Subtract 80: output
The input is the same as the output. Find the input.
Also can you please show me an easy to work out these type of questions
Answer:
Explanation:
Sure, I'd be happy to help you with the question!
Let's denote the input as x. According to the function machine, the input is multiplied by 6 and then 80 is subtracted from the result to obtain the output.
So, the function can be written as:
Output = (6 * x) - 80
Now, the problem states that the input is the same as the output. Therefore, we can set up the equation:
x = (6 * x) - 80
Let's solve this equation to find the value of x:
x = 6x - 80
Subtracting 6x from both sides, we get:
x - 6x = -80
Combining like terms, we have:
-5x = -80
Dividing both sides by -5, we find:
x = (-80) / (-5)
Simplifying the expression, we have:
x = 16
Therefore, the input (x) that results in the input being the same as the output is 16.
To work out these types of questions, it's important to carefully read the instructions and understand the operations being performed in the function machine. Then, you can set up an equation with the input and output, and solve for the unknown value. Always double-check your solution to ensure it satisfies the given conditions of the problem.
Answer:
16
Explanation:
(x*6) - 80 = x
Multiply the parentheses
6x - 80 = x
Add 80 to each side to get
6x = x + 80
Subtract x from both sides to get
5x = 80
Divide both sides by 5
x = 16
If the Fox for an object on an incline is 350N,
and the force of friction is 125N, what is the
acceleration of the object, if its mass is
450kg?
m/s/s
A car driving down a street has a kinetic energy of 32,000 J. If the car has a mass of 1,600kg, at what velocity is the car moving?
Explanation:
The mechanical energy can be expressed as kinetic and potential energy, given by the equation;
ME=KE+PE
but since the car isn't elevated off the ground nor is it subjected to the restoring force of a spring, we can then say PE=0
ME=KE
The equation of KE=0.5mv²
ME=0.5mv²
32 000=0.5(1600)v²
\(v {}^{2} = \frac{32 \: 000}{1600 \times 0.5} \)
\(v {}^{2} = \frac{32 \: 000}{800} \)
\( {v}^{2} = 40\)
\(v = \sqrt{40} = 6.324\)
v=6.324 m/s :)
why fan videos be streamed from the cloud to a computer with no lost quality
Videos can be streamed from the cloud to a computer with no loss in quality because Digital signals are used to transmit data to and from the cloud.
How do digital signals work?
An established or one that represents data as a step made up of discrete values is known as a digital signal. There is no noise produced by digital signals. Electronic signals sent as pulses are used to transmit digital signals to computers. These signals can be found in things like digital phones and computers.
Because digital signals are used to transport data to and from the cloud, it should be noted that videos are said to stream from the cloud to a computer without quality degradation.
Videos can be streamed from the cloud to a computer with no loss in quality because Digital signals are used to transmit data to and from the cloud.
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Q.3. The equivalent resistance across AB is:
(a)1
(c)2
(b)3
(d)4
Answer:
1 ohm
Explanation:
First of all, the equivalent resistance for two resistors (r₁ and r₂) in parallel is given by:
1 / Eq = (1 / r₁) + (1 / r₂)
The equivalent resistance for resistance for two resistors (r₁ and r₂) in series is given by:
Eq = r₁ + r₂
Hence as we can see from the circuit diagram, 2Ω // 2Ω, and 2Ω // 2Ω, hence:
1/E₁ = 1/2 + 1/2
1/E₁ = 1
E₁ = 1Ω
1/E₂ = 1/2 + 1/2
1/E₂ = 1
E₂ = 1Ω
This then leads to E₁ being in series with E₂, hence the equivalent resistance (E₃) of E₁ and E₂ is:
E₃ = E₁ + E₂ = 1 + 1 = 2Ω
The equivalent resistance (Eq) across AB is the parallel combination of E₃ and the 2Ω resistor, therefore:
1/Eq = 1/E₃ + 1/2
1/Eq = 1/2 + 1/2
1/Eq = 1
Eq = 1Ω
How many tons and pounds (like together, not two different numbers) is 9,920 pounds? Please help,
Answer:
About 5 tons (4.96)
2. A crane can lift a 500 kg mass to height of 30 m in 2 minutes. The power at which the crane is operating is
A. 125 Watts
B. 1225 Watts
C.) 7500 Watts
D. 73500 W
The power at which the crane operates, if it can lift a mass of 500 kg is 1225 Watts.
What is power?Power is the rate at which work is done.
To calculate the power the crane operates with, we use the formula below
Formula:
P = mgh/t............................... EquationWhere:
P = Powerm = Massg = Acceleration due to gravityh = Heightt = TimeFrom the question,
Given:
m = 500 kgh = 30 mt = 2 minutes = 2×60 = 120 sg = 9.8 m/s²Substitute these values into equation 1
P = (500×30×9.8)/120P = 1225 WHence, the right option is B. 1225 Watts.
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Which landscape will erode more quickly? Assume the same precipitation and average temperature in each landscape.
A. Landscape A.
B. Landscape B.
C. The rates of erosion will be the same.
D. Impossible to determine.
Answer:
B. Landscape B
Explanation:
Shale is fine sediment pressed together to form rock.
Sandstone is larger (sand-grain-sized) sediment cemented together to form rock.
Shale erodes faster, as evidenced by the second attachment. That attachment shows erosion of a rock face consisting of interbedded shale and sandstone. The shale has receded significantly, leaving the sandstone layers with space between them.
the speed of a boat in still water is 24 mph. if the boat travels 54 miles upstream in the same time it take to travel 90 miles downstream, find the speed of the current
Let's call the speed of the current "c". Then, the speed of the boat relative to the water when it is going upstream is 24 - c mph, and the speed of the boat relative to the water when it is going downstream is 24 + c mph.
Using the time it takes to travel the given distances, we can set up the following equation:
(54) / (24 - c) = (90) / (24 + c)
Expanding and solving for c, we find that:
c = 4 mph
So the speed of the current is 4 mph.
Answer: Upstream: 24 - 6 = 18 ---> 54 = 18 x? ---> ? = 54/18 = 3 hours
(24 - 6)x 3 = 18 x 3 = 54 miles
(24 + 6) x 3 = 30 x 3 = 90 miles
The speed of the current is 6 mph.
Time is 3 hours
How does Newton’s first second and third laws apply to eating your breakfast
Answer:
Newton's third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects. However much you push your fork in the food, that much a dent it will cause.
Explanation:
Answer:
¡I hope it helps you! :) .................
how big is the solar system
Answer:
287.46 billion km. (kilometers)
Answer:
very Very very Very Very very very Very very very large.
.............................................
Explanation:
where is the questions you are asking
How does a rocket move in space if there is no air or matter to push against?
On Earth, air typically prevents engine exhaust gases from leaving the engine. Thus, the thrust is lessened. However, to the lack of atmosphere in space, the exhaust gases may leave the engine considerably.
Without air, how does a rocket move through space?Rocket engines use combustion to operate, just like engines on Earth. Since oxygen is required for all types of combustion, liquid oxygen or another oxidizer is carried by rockets into space. Thus, unlike an automobile engine, they are not dependent on the ambient air.
How do they maintain air pressure in space?The Space Station also uses water, which is composed of hydrogen and oxygen atoms bound together, to sustain its oxygen supply. Astronauts and cosmonauts can separate oxygen from hydrogen by electrolyzing water, a procedure that includes passing electricity through water.
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Match the measurements with the proper SI unit.
Acceleration:
A. Meters
B. Meters per second
C. Meters per second squared
Velocity:
A. Meters
B. Meters per second
C. Meters per second squared
Distance:
A. Meters
B. Meters per second
C. Meters per second squared
Explanation:
C. meter per second squared
B. meter per second
A. meter
Answer:
b. meters per second
c.meters per second squared
c.meters
Explanation:
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Red light has a longer wavelength than blue light. Is this true or false?
Answer:
True
Explanation:
From order of the colors from longer to smaller wavelength is:
Red, orange, yellow, green, blue, and violet.
Therefore, red light has longer waves than blue light. So, the statement is true.
A metal wire of length 1cm and of uniform diameter has a resistance of 0.8 ohms. What is the resistance of a 50cm wire coil made of the same material but having twice its diameter?
Answer:
20
Explanation:
R= resistance P = resistivity
L = length A = area
0.8 = 1cm/A
R = J l/A => 0.8* 50*A/A
=> 0.8 * 25
=> 20
Answer:
Resistance is directly proportional to length, inversely proportional to cross-sectional area. Pay attention in class, and observe that even easy multiple choice questions can have only wrong answers if the setter makes a mistake.
Suppose an empty grocery cart rolls downhill in a parking lot. The cart has a maximum speed of 1.3 m/s when it hits the side of the store and comes to rest 0.30 s later. If an unbalanced force of —65 N stops the cart, what is the mass of the grocery cart?
The cart comes to rest from 1.3 m/s in a matter of 0.30 s, so it undergoes an acceleration a of
a = (0 - 1.3 m/s) / (0.30 s)
a ≈ -4.33 m/s²
This acceleration is applied by a force of -65 N, i.e. a force of 65 N that opposes the cart's motion downhill. So the cart has a mass m such that
-65 N = m (-4.33 m/s²)
m = 15 kg
Which figure shows vector A - vector B?
Answer:
The first and the last answer
Drag each tile to the correct box.
Adam takes a bus on a school field trip. The bus route is split into the five legs listed in the table. Find the average velocity for each leg of the trip. Then arrange the legs of the trip from highest velocity to lowest.
Leg Distance (km) Time (min)
A 18 9
B 25 15
C 24 8
D 48 12
E 15 7
Do this question by electric flux
A conducting sphere of radius 10cm has an unknown charge. If the electric field 20 cm from the centre of the sphere is \(1.5*10^{3}\) N/C and points radially inwards what is the net charge on the sphere.
Answer:
To find the net charge on the sphere using electric flux, we can use the formula:
Φ = Q/ε0
Where Φ is the electric flux, Q is the charge, and ε0 is the permittivity of free space.
Given that the electric field 20 cm from the center of the sphere is N/C and points radially inwards, we can use the formula for electric field due to a charged sphere to find the charge on the sphere:
E = kQ/r^2
Where E is the electric field, k is Coulomb's constant, Q is the charge, and r is the distance from the center of the sphere.
Substituting the given values, we get:
20 = (1/4πε0)(Q)/(0.2)^2
Solving for Q, we get:
Q = (20)(0.2)^2(4πε0)
Q = 0.64πε0 C
Now, substituting this value of Q in the formula for electric flux, we get: Φ = Q/ε0 = (0.64πε0)/(ε0) = 0.64π C
Therefore, the net charge on the sphere is 0.64π C.
What is the period of a pendulum that swings 20 times in 25 seconds
Answer:
We can use the formula for the period of a pendulum:
T = (2 * pi * sqrt(L/g))
where:
T = period (in seconds)
pi = 3.14159...
L = length of the pendulum (in meters)
g = acceleration due to gravity (9.81 m/s^2)
We can solve for L by rearranging the formula:
L = (T^2 * g) / (4 * pi^2)
We are given that the pendulum swings 20 times in 25 seconds. The period of one swing is the time it takes to complete one full cycle, so the period of 20 swings is 25 seconds divided by 20 swings, or 1.25 seconds.
Using this value for T and plugging in g, we get:
L = (1.25^2 * 9.81) / (4 * 3.14159^2)
L ≈ 0.153 meters or 15.3 centimeters
Therefore, the length of the pendulum is approximately 15.3 centimeters.
For the simple harmonic oscillation where k = 19.6
N/m, A = 0.100 m, x = -(0.100 m) cos 8.08t, and v =
(0.808 m/s) sin 8.08t, determine (a) the total energy, (b)
the kinetic and potential energies as a function of time,
(c) the velocity when the mass is 0.050 m from
equilibrium, (d) the kinetic and potential energies at
half amplitude (x = A/2).
a. Total energy is 0.098 J
b. Potential and Kinetic Energies is 0.032 sin^2(8.08t) J
c. Velocity at x is -0.808 sin(8.08t) m/s
d. Potential and Kinetic Energies at x is 0.016 sin^2(8.08t) J
Step by step explanationWe can use the following formulas for the energy, velocity, and potential and kinetic energies of a simple harmonic oscillator:
Total Energy: E = 1/2 k A^2Velocity: v = -ωA sin(ωt)Potential Energy: U = 1/2 k x^2Kinetic Energy: K = 1/2 m v^2where ω = √(k/m) is the angular frequency.
Given that k = 19.6 N/m, A = 0.100 m, x = -(0.100 m) cos 8.08t, and v = (0.808 m/s) sin 8.08t, we can find the values of E, U, and K as follows:
(a) Total Energy:
E = 1/2 k A^2 = 1/2 * 19.6 * 0.1^2 = 0.098 J
(b) Potential and Kinetic Energies:
U = 1/2 k x^2 = 1/2 * 19.6 * (-0.1 cos(8.08t))^2 = 0.098 cos^2(8.08t) J
K = 1/2 m v^2 = 1/2 * (0.1) * (0.808 sin(8.08t))^2 = 0.032 sin^2(8.08t) J
(c) Velocity at x = 0.050 m:
When x = 0.050 m, cos(8.08t) = -0.5, so we have:
v = -ωA sin(ωt) = -ω(0.1) sin(8.08t) = -0.808 sin(8.08t) m/s
(d) Potential and Kinetic Energies at x = A/2:
When x = A/2 = 0.050 m, cos(8.08t) = -0.5, so we have:
U = 1/2 k x^2 = 1/2 * 19.6 * (0.050)^2 = 0.0245 J
K = 1/2 m v^2 = 1/2 * (0.1) * (0.808 sin(8.08t))^2 = 0.016 sin^2(8.08t) J
Note that the sum of potential and kinetic energies at any point in time is equal to the total energy, which is constant.
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3. A car with a mass of 1600 kg has a kinetic energy of 125 000 J. How fast is it moving?
The car is moving at approximately 12.5 meters per second.
The kinetic energy (KE) of an object can be calculated using the formula:
KE = 1/2 * m * \(v^2\)
where
KE = kinetic energy,
m =Mass of the object, and
v = velocity.
In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .
Substituting the values , we have:
125,000 J = 1/2 * 1600 kg *\(v^2\)
Now, we can solve for v by rearranging the equation:
\(v^2\) = (2 * 125,000 J) / 1600 kg
\(v^2\) = 156.25 \(m^2/s^2\)
Taking the square root, we find:
v = √156.25\(m^2/s^2\)
v ≈ 12.5 m/s
Therefore, the car is moving at approximately 12.5 meters per second.
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Luka Doncic throws a ball from a 3-point line distance (6.75 m). The basket is at height
3.05 m. The ball leaves his hands at height 2.80 m at an angle of 45◦ and velocity 8.3 m/s.
Will he score the 3 points?
Luka Doncic will score the 3 points if he throws a ball from a 3-point line distance (6.75 m) and if the basket is at height of 3.05 m.
Resolving u into its vertical and horizontal components
ux = u cos θ
ux = 8.3 cos 45°
ux = 5.9 m / s
uy = u sin θ
uy = 8.3 sin 45°
uy = 5.9 m / s
H = 3.05 - 2.8
H = 0.25 m
T = uy + √ uy² - 2 g H / g
T = 5.9 + √ 5.9² - ( 2 * 9.8 * 0.25 ) / 9.8
T = 5.9 + √ 34.81 - 4.9 / 9.8
T = 5.9 + 5.47 / 9.8
T = 11.37 / 9.8
T = 1.16 s
R = ux T
R = 5.9 * 1.16
R = 6.8 m
Distance of three point line from the basket = 6.75 m = 6.8 m = R
Therefore, Luka Doncic will score the 3 points
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A box that has a mass of 80 kg slides down a ramp with a 30 degree angle. The free-body diagram shows the forces acting on the box. Ignoring friction and air resistance, what is the acceleration of the box, to the nearest tenth?
Answer:
Explanation:
a = gsinθ = 9.8sin30 = 4.9 m/s²
A radio signal has a frequency of 1.023 x 108 HZ. If the speed of the signal in air is 2.997 x 108m/s, what is the wavelength of the signals? а 7.15 m b 5.23 m C 2.93 m d 0.93 m
Answer:
2.93 m (which agrees with answer "C" on the list)
Explanation:
Recall that the speed of the wave equals the product of the wave's length times its frequency. Therefore, the wavelength is going to be the quotient of the speed of the signal divided its frequency:
Wavelength = 2.997 10^8 / 1.023 10^8 = 2.93 m
all pressure topics in physics
What three factors determine the amount of potential energy in a object are ______,______,and ______.
Answer:
It should be Mass, Gravity and Height
Explanation:
Two traveling sinusoidal waves are described by the wave functions
Y1 : 4.95sin[π(3.80x-1180t)]
Y2 : 4.95sin[π(3.80x-1180t-0.250)]
Where x , y1 and y2 are in meters and t is in seconds
The wave function of the resultant wave, Y1 + Y2 is Y = 4.95sin[π(3.80x - 1180t - 0.206)].
The wave function Y1 describes a sinusoidal wave with an amplitude of 4.95 meters, a wavelength of λ = 2π/3.8 ≈ 1.65 meters, and a frequency of f = 1180/3.8 ≈ 310 Hz. The phase of the wave is such that the maximum displacement occurs at x = 0 and t = 0, and the wave is moving in the negative x direction.
The wave function Y2 also describes a sinusoidal wave with the same amplitude and wavelength as Y1, but with a phase difference of 0.25 seconds. This means that Y2 is shifted to the left (negative x direction) by a distance of Δx = λΔφ/2π = λ(0.25)/2π ≈ 0.206 meters. The frequency and speed of Y2 are the same as Y1.
To determine the resultant wave Y, we add the two wave functions: Y = Y1 + Y2. Using the trigonometric identity sin(a + b) = sin(a)cos(b) + cos(a)sin(b), we can simplify the expression for Y:
Y = 4.95sin[π(3.80x - 1180t)] + 4.95sin[π(3.80x - 1180t)cos(0.25) + cos(π/2)sin(0.25)]
Y = 4.95sin[π(3.80x - 1180t)] + 4.95sin[π(3.80x - 1180t + 0.25)]
Y = 4.95sin[π(3.80x - 1180t - 0.206)]
The resultant wave Y is a sinusoidal wave with the same amplitude and wavelength as Y1 and Y2, but with a phase shift and a different waveform due to interference. The frequency and speed of Y are also the same as Y1 and Y2.
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-- The given question is incomplete, the complete question is
"Two traveling sinusoidal waves are described by the wave functions
Y1 : 4.95sin[π(3.80x-1180t)]
Y2 : 4.95sin[π(3.80x-1180t-0.250)]
Where x , y1 and y2 are in meters and t is in seconds. Find the wave function of the resultant wave (Y1 + Y2)." --