A fire truck is responding to an emergency. It accelerates from 0 to 66 km/hr in 11 seconds. What is its rate of acceleration? Help pls
Answers
Answer:
a= 66/11
=6ms^-2
Related Questions
describe how a volcano is formed at a continental rift
Answers
Volcanoes are formed due to geological activity inside the Earth’s crust, where magma rises to the surface and outflows onto the ground surface. A volcanic eruption occurs when this magma rises and reaches the Earth’s surface, and the pressure forces the magma, ash, and rocks out of the volcano. Volcanoes are frequently found at continental rifts and subduction zones.
How a volcano is formed at a continental rift?A continental rift is a linear zone where the Earth's crust and lithosphere are slowly tearing apart. Magma increases in the space between the two drifting tectonic plates as they split apart. The pressure builds up over time, and eventually, it becomes too much for the magma to handle. As a result, the magma rises to the surface and erupts as a volcano. Lava flows occur during a rift eruption, and fissures might open in the ground, allowing lava to spill out onto the surface. Lava fountains and lava lakes may form as the lava flows through channels. The magma's composition varies depending on the location of the volcano and the type of rift.Volcanic eruptions at continental rifts are usually non-explosive and less harmful than those at subduction zones.#SPJ11
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Which is easier for a beginner? (This is for archery)
O long bow
O recurve bow
Answers
Answer:
The recurve bows
Explanation:Vote brainliest plz
Why did the author most likely write "Meeting Juli a
to explain why everyone should have a pen pal
to warn people about the dangers of having a pen pal
to share a positive experience she had with a pen pal
to show her parents why it is important to have a pen pal
Answers
Answer:
To share a positive experience she had with a pen pal
Explanation:
Just read the story :)
Answer:
C To share a positive experience she had with a pen pal
Explanation:
on edge
Where would you have to be to see the view shown above? Explain.
Answers
Answer:
where is the view......
A hippopotamus laying on the rock exerts 10,000 N on the rock. The rock has a mass of
2 tons. How much work is being done? Be sure to show your work.
Answers
Answer:
Explanation:
If the hippo is laying on the rock, I'm assuming that there is no movement going on at all, in either the hippo or the rock. If no movement occurs, there is no work being done.
you are standing on a very slippery icy surface and throw a 1 kg football horizontally at a speed of 7.5 m/s. what is your velocity (in m/s) when you release the football? (assume your mass is 77 kg and that the positive direction is the direction of motion of the football. indicate the direction with the sign of your answer.)
Answers
My velocity is -0.09m/sec in opposite direction of football direction.
We are given that we are standing on a very slippery surface, means that we assume friction is not there.
So, energy lost is zero. It means that we need to conserve momentum in x-direction as the ball is travelling in +x direction after it is kicked.
My initial velocity (u₁)=0m/sec, initial velocity of football=0m/sec.
Final velocity of ball(v)=7.5m/sec, mass of football=1kg,my mass=77kg
Therefore, we apply law of conservation of momentum, we get
=>Initial momentum= final momentum
=>0 = 77×v+1×7.5
=>v= -7.5/77
=>v= -0.09m/sec
Hence my velocity when I release the football is 0.09m/sec in opposite direction of football .
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what will the velocity be if the momentum is 60000kg.m.s and the mass of the car is 2000kg
Answers
Answer:
30 m/s
Explanation:
p =mv -> 60,000 = 2000 * v -> v= 30
what is the force exerted by the cord on the ceiling when the ball is at the lowest point. provide explanation.
Answers
Force exerted by the cord on ceiling will be equal to the tension (T1) in the rope i.e. 60 N
Force is an external agent able of changing a body’s state of rest or stir. It has a magnitude and a direction. The direction towards which the force is applied is known as the direction of the force, and the operation of force is the point where force is applied.
The Force can be measured using a spring balance. The SI unit of force is Newton( N).
In drugs, stir is defined as the change in position with respect to time. In simpler words, stir refers to the movement of a body. generally, stir can either be described as
Change in speed
Change in direction
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2. A bookshelf is 200 cm and 40 N weight, with supports at its ends (X and Y).
a. A book weighing 12 N is placed in the middle of the shelf. What are the upward forces at X and Y?
b. The book is moved so that it is 40 cm from B. Use moments to calculate the forces at X and Y.
Answers
Answer:
force =m×a=40=200×a=a=200-40=160m/second sguaredExplanation:
always accerelation it measures in m/second sguared.
The gravitational force of the Earth on the Moon is 1.99 x 1020 N.
If the mass of the Moon is 7.34 x 1022 kg, what is the acceleration
of the Moon?
Answers
Explanation:
ANSWER
g
m
=
R
2
GM
1.4=
R
2
(6.667×10
−11
)(7.34×10
22
)
R=
1.4
6.667×10
−11
(7.34×10
22
)
=
34.95×10
11
=1.87×10
6
m
HOPE IT'S HELP AND PLZ FOLLOW ME
37. A baseball is pitched at a speed of 40 m/s. How long does it take the ball to travel 27
meters from the pitcher's mound to home plate?
Answers
Answer:
0.675
Explanation:
hope you get it right
Answer:
\(0.675\:\mathrm{s}\)
Explanation:
Displacement can be given as \(\Delta x=v_x\cdot t\)
Substituting given values, we have:
\(27=40t,\\t=\frac{27}{40}=\boxed{0.675\:\mathrm{s}}\)
a charged particle is immersed in a uniform magnetic field coming out of the page and is moving along a circular path in the counter-clockwise direction. what is the charge of the particle in this situation?
Answers
The charge of the particle in this situation is positive. When a charged particle is immersed in a uniform magnetic field, it experiences a force known as the Lorentz force, which is given by the equation:
F = q(v × B)
Where F is the Lorentz force, q is the charge of the particle, v is the velocity of the particle, and B is the magnetic field.
In this case, the particle is moving along a circular path in the counter-clockwise direction, which means that the force acting on the particle is directed towards the center of the circle. This force is known as the centripetal force, and it is given by the equation:
F = mv^2/r
Where m is the mass of the particle, v is the velocity of the particle, and r is the radius of the circle.
Since the Lorentz force and the centripetal force are equal in magnitude and opposite in direction, we can equate the two equations to get:
q(v × B) = mv^2/r
Rearranging the equation and solving for q gives:
q = mv^2/(rB)
Since the particle is moving in the counter-clockwise direction, the velocity vector v is directed tangentially to the circle, and the magnetic field vector B is directed out of the page. The cross product of these two vectors is directed towards the center of the circle, which means that the charge of the particle must be positive in order for the Lorentz force to be directed towards the center of the circle.
Therefore, the charge of the particle in this situation is positive.
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A stone is thrown vertically downward from a cliff 208.0-m tall. during the last half second of its flight, the stone travels a distance of 48.5 m. find the initial speed of the stone.
Answers
A stone is thrown vertically downward from a cliff, the initial speed of the stone is 76.246m/s.
CalculationHeight of the cliff = 208m
Distance travelled during last half second = 48.5 m
According to the second equation of motion:
\(s1= vt + 1/2 gt^{2}\)
\(v= (2x_{1} - gt^{2})/2t\)
v= \(\frac{2(48.5) - (9.8)(0.5)^{2} }{2(0.5)}\)
v= 94.55 m/s
If the initial speed of the ball is u,
then again from the equation of motion, we get initial speed as
u=\(\sqrt{v^2 - 2gh}\)
=\(\sqrt{94.55^2 -2(9.8)(208-48.5)}\)
u= 76.246 m/s
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Urgent!! A plastic rod is charged by rubbing it with a cloth. The cloth and the rod both have a 14.3 mC charge and are placed 20 cm from each other. Calculate the electric force between the rod and the cloth. (Note: k = 8.99 × 10° N • m2 /C2
Answers
The electric force between the rod and the cloth is 4.6 x 10⁷ N.
What is the force between the rod and the cloth?
The electric force between the rod and the cloth is calculated by apply Coulomb's law.
This law states that electric force between two charged bodies is directly proportional to the product of the charges and inversely proportional to the distance between the charged bodies.
Mathematically, this law is given as;
F = kq²/r²
where;
k is Coulomb's constant = 8.99 x 10⁹ Nm²/C²q is the magnitude of the charges = 14.3 mC = 14.3 x 10⁻³ Cr is the distance between the rod and the cloth = 20 cm = 0.2 mSubstitute the given parameters and solve for the electric force between the rod and the cloth as shown below.
F = kq²/r²
F = (8.99 x 10⁹ x 14.3 x 10⁻³ x 14.3 x 10⁻³) / (0.2)²
F = 4.6 x 10⁷ N
Thus, the electric force between the rod and the cloth is determined by applying Coulomb's law.
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An atom with 29 protons and 36 neutrons is an isotope of
(A) Si
(B) Cu
(C) Kr
(D) CI
Answers
Answer:
(B) Cu
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
Isotopes can be defined as the atom of an element that has the same number of protons but different number of neutrons. This ultimately implies that, the isotopes of an element have the same atomic number (number of protons) but different atomic mass (number of nucleons).
The isotope of an element is denoted by \( X_{Z}^{A} \)
Where; X is the symbol of the element.
A is the atomic mass or number of nucleons.
Z is the atomic number or number of protons.
Hence, an atom with 29 protons and 36 neutrons is an isotope of copper because it has an atomic mass of 65, which corresponds with that of the chemical element known as copper with the symbol, Cu.
A car goes 15 miles at 45mph, then goes another 15 miles at 30mph. a. How long does the trip take? b. What is the average speed for the whole trip?
Answers
The trip takes a total of 1.5 hours and has an average speed of 40 mph.
To calculate the time taken for each leg of the trip, we can use the formula time = distance/speed.
For the first leg of the trip, the car travels 15 miles at a speed of 45 mph. Using the formula, we find that the time taken for this leg is 15/45 = 0.33 hours.
For the second leg of the trip, the car travels another 15 miles but at a speed of 30 mph. Using the formula, we find that the time taken for this leg is 15/30 = 0.5 hours.
To find the total time for the trip, we add the times for each leg: 0.33 hours + 0.5 hours = 0.83 hours.
To calculate the average speed for the entire trip, we use the formula average speed = total distance/total time. The total distance traveled is 15 miles + 15 miles = 30 miles. The total time taken is 0.83 hours. Plugging these values into the formula, we find that the average speed for the trip is 30/0.83 = 36.14 mph.
Therefore, the trip takes a total of 1.5 hours and has an average speed of 40 mph.
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what type of motion does a projectile object have in the vertical direction after it is launched horizontally? (neglect air resistance.)
Answers
The projectile object have in the vertical direction after it is launched horizontally has constant velocity.
What is constant velocity?
Constant velocity is a constant speed in a particular direction. It is a type of motion in which the position of an object changes by the same amount each second. This means that the velocity of the object remains constant, which can be measured with a constant speedometer or a special device called an accelerometer. Constant velocity is the opposite of acceleration, in which an object's speed changes over time.
A projectile object launched horizontally will have a constant velocity in the vertical direction due to the force of gravity, since the only force acting on it is gravity. Therefore, it will maintain its speed and direction in the vertical direction, which is known as constant velocity.
Therefore, constant velocity is the answer.
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you place a box weigthing 362 N on a inclunded plane that makes a 37.8 angel with a hirizontal. compute the componest of gravitational force acting down the inclined plane.
Answers
Answer:
W = 221.872 N
Explanation:
The weight of a box, F = 362 N
It makes an angle of 37.8 degrees with the horizontal.
We need to find the gravitational force acting down the inclined plane. The component of weight that is acting down the inclined plane is mgsinθ.
W = mgsinθ
= 362× sin(37.8)
= 221.87 N
So, the required component of gravitational force is 221.87 N.
Two closely wound circular coils have the same number of turns, but one has twice the radius of the other. How are the self-inductances of the two coils related
Answers
The self-inductances of the two closely wound circular coils are directly proportional to the square of their respective radii. Therefore, the coil with twice the radius will have four times the self-inductance of the smaller coil.
The self-inductance (L) of a coil depends on its geometric properties, including the number of turns (N) and the radius (r). Mathematically, the self-inductance is given by the formula L = μ₀N²πr², where μ₀ is the permeability of free space.
In this scenario, both coils have the same number of turns (N), but one coil has twice the radius (2r) compared to the other coil (r).
By substituting the values into the formula, we can compare their self-inductances:
L₁ = μ₀N²πr² (for the smaller coil)
L₂ = μ₀N²π(2r)² (for the larger coil)
Simplifying the equations, we get:
L₁ = μ₀N²πr²
L₂ = μ₀N²4πr² = 4(μ₀N²πr²)
Therefore, we can see that the self-inductance of the larger coil (L₂) is four times the self-inductance of the smaller coil (L₁). The self-inductances of the two coils are directly proportional to the square of their radii.
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Assume that it is now January 1, 2022. Wayne-Martin Electric Inc. (WME) has developed a solar panel capable of generating 200% more electricity than any other solar panel currently on the market. As a result, WME is expected to experience a 14% annual growth rate for the next 5 years. Other firms will have developed comparable technology by the end of 5 years, and WME's growth rate will slow to 5% per year indefinitely. Stockholders require a return of 12% on WME's stock. The most recent annual dividend (Do), which was paid yesterday, was $1.75 per share. a. Calculate WME's expected dividends for 2022, 2023, 2024, 2025, and 2026. Do not round intermediate calculations. Round your answers to the nearest cent. D2022 = $ X D2023 = $ D2024 = $ X D2025 = $ D2026 = $ b. Calculate the value of the stock today, Po. Proceed by finding the present value of the dividends expected at the end of 2022, 2023, 2024, 2025, and 2026 plus the present value of the stock price that should exist at the end of 2026. The year end 2026 stock price can be found by using the constant growth equation. Notice that to find the December 31, 2026, price, you must use the dividend expected in 2027, which is 5% greater than the 2026 dividend. Do not round intermediate calculations. Round your answer to the nearest cent. X S C. Calculate the expected dividend yield (D2/Po), capital gains yield, and total return (dividend yield plus capital gains yield) expected for 2022. (Assume that Do = P, and recognize that the capital gains yield is equal to the total return minus the dividend yield.) Do not round intermediate calculations. Round your answers to two decimal places. D1/Po = X % Capital gains yield = % Expected total return = % Then calculate these same three yields for 2027. Do not round intermediate calculations. Round your answers to two decimal places. D/Ps = % Capital gains yield = % Expected total return = %
Answers
a) D2022 = $1.9975, D2023 = $2.27715, D2024 = $2.60554, D2025 = $2.98868, D2026 = $3.43243
b) Po = $13.63
c) Dividend yield = 13.85%, Capital gains yield = 74.52%, Expected total return = 88.37%. Dividend yield = 17.89%, Capital gains yield = -23.29%, Expected total return = -5.40%.
a) Dividend is the distribution of earnings to shareholders. Expected dividend for each year can be calculated as follows:
D2022 = D0 (1 + g) = $1.75 (1 + 0.14) = $1.9975
D2023 = D2022 (1 + g) = $1.9975 (1 + 0.14) = $2.27715
D2024 = D2023 (1 + g) = $2.27715 (1 + 0.14) = $2.6055415
D2025 = D2024 (1 + g) = $2.6055415 (1 + 0.14) = $2.98868161
D2026 = D2025 (1 + g) = $2.98868161 (1 + 0.14) = $3.432429195
b) The present value of dividends expected in 2022, 2023, 2024, 2025 and 2026 can be calculated using the following formula:
PVD = D / (1 + r)t
where
PVD = present value of dividends expected
D = dividend expected in a future year
t = number of years from now
r = required rate of return
PVD2022 = $1.9975 / (1 + 0.12)¹ = $1.77700934579
PVD2023 = $2.27715 / (1 + 0.12)² = $1.88843867485
PVD2024 = $2.6055415 / (1 + 0.12)³ = $1.99719364693
PVD2025 = $2.98868161 / (1 + 0.12)⁴ = $2.10928913223
PVD2026 = ($3.432429195 + ($3.432429195 * 1.05)) / (1 + 0.12)⁵ = $2.25661605368
The present value of the stock price that should exist at the end of 2026 can be calculated using the constant growth equation:
Po = D1 / (r - g)
where
Po = price of stock today
D1 = dividend expected at the end of 2026r = required rate of return
g = expected growth rate
Po = $3.60484320761
Total present value of all dividends expected plus the present value of the stock price at the end of 2026 can be calculated using the formula:
Total PV = PVD2022 + PVD2023 + PVD2024 + PVD2025 + PVD2026 + PoTotal PV = $1.77700934579 + $1.88843867485 + $1.99719364693 + $2.10928913223 + $2.25661605368 + $3.60484320761 = $13.6333900619
The value of the stock today, Po, is $13.63.
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g two waves of light, wave a and wave b have the same speed. wave a has a wavelength of 235 nm and wave b has a wavelength of 515 nm. what can you say about the frequency?
Answers
Because both waves travel at the same speed, we know they must have distinct frequencies in order to have different wavelengths. This is due to the fact that the speed of light in a particular medium is constant,
and the frequency of a wave is inversely related to its wavelength. The speed of light (c) is equal to the product of the wavelength () and frequency (f) in the wave equation: c = f. Because the speed of light is constant, we may rewrite this equation to find frequency: f = c/. We have the following for wave a with a wavelength of 235 nm:
\(f_a = \frac{3.00 * 10^8 m/s}{235 * (10-9) m} = 1.28 x 10^{15} Hz\)
We have the following for wave b with a wavelength of 515 nm:
\(f_b\) = c / λ b = 3.00 x 10⁸ m/s / (515 x 10⁻⁹ m) = 5.83 x 10¹⁴ Hz
Therefore, we can see that wave a has a higher frequency than wave b.
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What is Center of mass
Answers
Answer:
The center of mass is a position defined relative to an object or system of objects.
Explanation:
the first group of the periodic table is known by what name
Answers
Answer:
Alkali Metals
Explanation:
If the first column of elements is what your talking about , they're the Alkali Metals .
:)
Answer:
The first group (1A) of elements are classified as Alkali metals.
Why is light considered a form of electromagnetic radiation?
Answers
Answer:
Light considered a form of electromagnetic radiation because an energy that travels in the form of electromagnetic waves. It can also be described as a flow of particle-like 'wave-packets', called photons, that travel constantly at the speed of light (about 300 000 kilometres per second) .
Light consists of electric and magnetic fields that oscillate perpendicular to each other and propagate through space as waves. These waves have both an electric component and a magnetic component, which are perpendicular to each other and to the direction of wave propagation.
Like other forms of electromagnetic radiation, light also travels at a constant speed in a vacuum (the speed of light), and it can be reflected, refracted, diffracted, and absorbed. Furthermore, the energy of a light wave is proportional to its frequency, and the frequency of light can vary over a continuous range, creating a spectrum of different colors.
Therefore, light is considered a form of electromagnetic radiation because it shares all the fundamental properties and characteristics of electromagnetic waves, such as oscillating electric and magnetic fields and the ability to travel through space as waves.
why no one is helping me!!!
please help me quickly will mean alotttt!!
THE VOLTAGE ACROSS THE GROUPING U=12 VOLTE
TAKE R1=39
AND R2=68
The question is
CALCULATE i1 and i2
Answers
Answer:
Hi
Explanation:
OK so
I2 = U/R2
or
I2 = 12 : 68
I1 = U /R1
I1= 12 : 39
Answer:
Relax 5-Min guide
Explanation:
which process converts solar energy into chemical energy in the form of a carbohydrate?
Answers
The process that converts solar energy into chemical energy in the form of a carbohydrate is called photosynthesis.
During photosynthesis, plants, algae, and some bacteria use chlorophyll and other pigments to absorb sunlight and convert it into chemical energy in the form of ATP and NADPH. This energy is then used to drive the conversion of carbon dioxide and water into glucose and oxygen through a series of chemical reactions known as the Calvin cycle. The glucose produced during photosynthesis can then be used as a source of energy by the organism or stored as starch for later use. Photosynthesis is a critical process that sustains life on Earth by producing the oxygen and energy that support all living organisms.
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please help me i neeed help with all threeas soon as possible thank you
Answers
Answer:
4b: comets
5a: supercluster
5b: they just changed 4b's solar system for milky way. I think it is still comets. if not, then just say black holes.
ten point on important of sports and games in human life
Answers
show the wave packet is normalized in coordinate space if its corresponding momentum space distribution is normalized.
Answers
The wave packet ψ(x) is normalized in coordinate space if its corresponding momentum space distribution ϕ(p) is normalized. The Fourier transform relationship between the wave function in position space (ψ(x)) and momentum space (ϕ(p) is ∫ |ψ(x)|² dx = ∫ 1 / (2πħ)² dx = 1
ψ(x) = ∫ ϕ(p) × e\(e^{(ipx/ħ)}\) dp / √(2πħ)
Where ħ is the reduced Planck's constant.
If the momentum space distribution ϕ(p) is normalized, then we have:
∫ |ϕ(p)|² dp = 1
To show that the wave packet ψ(x) is normalized, we need to evaluate the integral of its absolute square:
∫ |ψ(x)|²dx
= ∫ (∫ ϕ(p) × \(e^{(ipx/ħ)}\) dp / √(2πħ)) × (∫ ϕ(q) ×\(e^{(ipx/ħ)}\)dq / √(2πħ)) dx
= ∫ (∫ ϕ(p) ×\(e^{(ipx/ħ)}\) dp × ϕ(q) × \(e^{(ipx/ħ)}\) dq) / (2πħ)
Since the momentum space wave function ϕ(p) is normalized, we can rewrite the above integral as:
= ∫ (∫ ϕ(p) × ϕ(q) × \(e^{(i(p+q)x/ħ) dp dq)}\) / (2πħ)
Now, we can consider the inner integral:
∫ ϕ(p) × ϕ(q) × \(e^{^{(i(p+q)x/ħ) dp dq)}}\)
This is the inverse Fourier transform of the product of two momentum space wave functions, which corresponds to the convolution of the two functions.
Using the convolution theorem, we know that the Fourier transform of a convolution is given by the product of the Fourier transforms of the individual functions. Since ϕ(p) is normalized in momentum space, the Fourier transform of ϕ(p) is also normalized.
Therefore, the inner integral in the expression for ∫ |ψ(x)|² dx simplifies to:
∫ ϕ(p) × ϕ(q) × \(e^{(i(p+q)x/ħ) }\)dp = 1
Plugging this back into the expression for ∫ |ψ(x)| dx, we get:
∫ |ψ(x)|² dx = ∫ 1 / (2πħ)² dx = 1
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A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, how fast does the skateboard roll away?
Answers
A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, the skateboard rolls away at 31.3 m/s.
What is the Law Of Conservation Of Linear Momentum?
Law of conservation of linear momentum states that the total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is
P=mv.
If we have a system of bodies, then the total momentum is the sum of the individual momentums:
P = m₁v₁ +m₂v₂
If a collision occurs and the velocities change to v', the final momentum is:
P' = m₁v₁' +m₂v₂'
Since the total momentum is conserved, then:
P = P'
m₁v₁ +m₂v₂ =m₁v₁' +m₂v₂'
A girl of m1 = 49 kg rides an m2 = 4.2 kg skateboard and the common speed is v1 = v2= 1 m/s.
The girl jumps off the skateboard backward with a speed of v1'=-1.6 m/s (negative because it's opposite to the original direction). It's required to find the final speed of the skateboard. It will be calculated by solving for v2':
v₂'= m₁v₁ +m₂v₂ - m₁v₁' / m₂
= (49 × 1) + ( 4.2 × 1 ) - ( 49× (- 1.6) / 4.2
Calculating the values,
= 31.3 m/s.
The skateboard rolls away at 31.3 m/s.
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