Calculate the wavelength of a water wave with a speed of 3.0 m/s and frequency of
4.0 Hz.
Answer:
the answer is 12.0
The wavelength of the water wave is 0.75 meters.
What is wavelength?Wavelength is the distance between successive peaks or troughs of a wave. It is denoted by the symbol λ (lambda) and is measured in meters (m) or other units of length.
The wavelength of a wave determines its properties such as its energy, frequency, and speed. In general, waves with longer wavelengths have lower frequencies and travel at slower speeds, while waves with shorter wavelengths have higher frequencies and travel at faster speeds.
Here in the Question,
The relationship between the wavelength (λ), frequency (f), and wave speed (v) of a wave is given by the equation:
v = λf
We are given the speed of the water wave (v) as 3.0 m/s and the frequency (f) as 4.0 Hz.
Plugging these values into the equation, we get:
3.0 m/s = λ x 4.0 Hz
Rearranging the equation to solve for the wavelength, we get:
λ = v/f = 3.0 m/s ÷ 4.0 Hz = 0.75 m
λ = 0.75 m
Therefore, the wavelength of the water wave is 0.75 meters.
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PLEASE HELPPPPP!!!!!!!!!
A 60 W light bulb has a resistance of 880 Ω
Calculate the CURRENT.
Write your answer in Amps to TWO SIGNIFICANT FIGURES
[tex] \sf{• \: Power \: (P) = 60 \: w}[/tex]
[tex] \sf{• \: Resistance \: (R) = 880 \: Ω}[/tex]
[tex] \\ [/tex]
[tex]\bf{ \underline{To \: Find :- }}[/tex][tex] \sf• \: The \: Current \: (I).[/tex]
[tex] \\ [/tex]
[tex] \huge\bf{ \underline{ Solution :- }}[/tex]
[tex] \sf We \: know \: that,[/tex]
[tex] \bf \red {\bigstar{ \: P = I^{2} R}}[/tex]
[tex] \rightarrow \sf 60 = I^{2} \times 880[/tex]
[tex] \rightarrow \sf \frac{60}{880} = I^{2} [/tex]
[tex] \rightarrow \sf I^{2} = 0.0681[/tex]
[tex] \rightarrow \sf I = \sqrt{0.0681}[/tex]
[tex] \rightarrow \sf I = 0.261 \: \: (approx.)[/tex]
[tex] \\ [/tex]
[tex]\bf The \: \: value \: \: of \: \: I \: \: is \: \: 0.261 \: \: Amps. \: \: (approx.)[/tex]
If a car travels 200 meters in 10 seconds how fast is it going
Answer:
20 meters per second.
Explanation:
200/10
Kinetic energy increases as:
A. Mass increases and velocity decreases.
B. Mass decreases and velocity increases.
C. Both mass and velocity increase.
D. Both mass and velocity decrease.
Kinetic energy formula is: 1/2 mv^2
M = mass
V = Velocity
So as kinetic energy increases, mass increases and velocity increases because mass and velocity are directly proportional to each other.
May you please help me?
Answer:
The first one is 9 times the original
The second one is 1/2 times
The third one is 1/3 times
A sledgehammer is an example of what kind of simple machine?
A. Wheel and axle
o
B. Screw
c
C. Wedge
D. Lever
SUS
I am 95 percent sure the answer in C
Answer: C
Explanation:
A train travels 100 km east and then 75 km west. What is the magnitude of
its displacement?
Answer:
displacement = 100 - 75 = 25 km east
Big sound is heard in bathroom than in a living room
Answer
That doesn't make any sense.
Explanation:
Help me please
There’s 2 questions.
Answer:
50 Joules of work on the system Total distance is 1m W= F ×D 50 Joules = F × 1m F= 50 Newtons W= 1234 J D= 451234= F × 45 meters F= 27.42 Newtons I do exams and quizzes if ur interestedThe resistance of 3A and 12V
A gas at 8.4 atm has a volume of 1.9 L. What volume would the gas have at 8.3 atm?
Answer:
the final volume of the gas is 1.923 L.
Explanation:
Given;
initial pressure, P₁ = 8.4 atm
initial volume of the gas, V₁ = 1.9 L
final pressure of the gas, P₂ = 8.3 atm
The final volume of the gas is calculated by applying Boyle's law as follows;
P₁V₁ = P₂V₂
V₂ = P₁V₁ / P₂
V₂ = (8.4 x 1.9) / 8.3
V₂ = 1.923 L
Therefore, the final volume of the gas is 1.923 L.
10. A student walking in the hallway sees a spill. When this happens, they slow down from 8.3 ft/s to a pace of 3.3 ft/s in 4 seconds. What is their acceleration?
Answer:
Acceleration = -1.33ft/s²
Explanation:
Given the following data;
Initial velocity = 3.3ft/s
Final velocity = 3.3ft/s
Time, t = 4s
To find the acceleration;
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
Where,
a is acceleration measured in [tex]ms^{-2}[/tex]v and u is final and initial velocity respectively, measured in [tex]ms^{-1}[/tex]t is time measured in seconds.Substituting into the equation, we have;
[tex]a = \frac{3.3 - 8.3}{4}[/tex]
[tex]a = \frac{-5.3}{4}[/tex]
Acceleration = -1.33ft/s²
The value is negative because the final velocity is lesser than the initial velocity i.e the student is decelerating.
I only have 3 minutes left this is my last question
what is the momentum of a bicycle with a mass of 18 kg traveling at 20 m/s?
Answer:360 kg m/s
Explanation:Momentum refers to an object's quantity of motion.
Formula for Momentum: p=mv
p = refers to the momentum
m = refers to the object's mass (this is represented by the unit kg or kilogram)
v = this refers to the object's velocity (this is represented by the unit m/s or meter per second)
So, given that the bike has a mass of 18 kg and is traveling at 20 m/s, then you can already get the momentum by multiplying both of these values.
p = the bike's momentum (what is being asked here)
m = 18 kg
v = 20 m/s
Thus, p = 18kg × 20 m/s = 360 kg m/s
The bike's momentum is 360 kg m/s.
Brainlist please
how do you find the net force of 225 N
Answer:
2.65
Explanation:
Its simple just find the newtons
Why is it important that a finger be wet
before it is touched to a hot clothes iron?
Why is it important that your finger be wet if you intend to touch it briefly to a hot clothes iron to test its temperature. If your finger is wet, some of the heat transmitted to your finger will be given to the water which has a high specific heat capacity and also a larger latent heat of vaporization.
#carryonlearning
According to Einstein, space and time are _____
dimensions. Masses in the universe _____
and are parts of a whole universe that has four
space-time, and the resulting shape of space-time causes _____ .
Answer:
Relative; curved; gravity.
Explanation:
According to Einstein, space and time are relative and are parts of a whole universe that has four dimensions. Masses in the universe curved space-time, and the resulting shape of space-time cause gravity.
The above theory is known as the General Relativity or General Theory of Relativity and it was published in 1915 by Albert Einstein.
Basically, it states that universe curved space-time is directly proportional to the energy and momentum of matter and radiation that is present. Thus, gravity is the universe curved space-time caused by massive objects.
Answer:
Complete the passage to describe one of the features of Einstein’s general theory of relativity.
According to Einstein, space and time are
relative
and are parts of a whole universe that has four dimensions. Masses in the universe
curve
space-time, and the resulting shape of space-time causes
gravity
correct on Edge2021
I can't understand
like which energy changes are involved
which energy it was first and which it was converted into
Answer:
turtle
Explanation:
IS THIS CORRECT???...........................
Answer:
A. consumers
B. multi-cellular
Explanation:
Only plants have chlorophyll and only plants have a cell wall so C and D are out of the window. They are consumers because, they don't have photosynthesis so they have to eat. They are multi-cellular because, animals all have at least a brain, body, etc. Which all need millions of cells.
circle the best answer on the line provided.
i. If an object starts to accelerate,
a. a balanced force is acting on it
b. gravity is acting on it
c. velocity is acting on it
d. an unbalanced force is acting on it
Plsss asap ill mark branliest
How do you find mass in physics
what allows electrons to move through it easily
Answer:
materials that allow many electrons to flow freely are caused conductors such as copper, silver, aluminum, hydrochloric solution, sulfuric acid, and salt water. in contrast materials which allow few electrons to flow are called insulators such as plastic, rubber, glass, and dried paper.
Explanation:
Hope this helped Mark BRAINLEST!!
5.0 kg, with a bullet of mass 0.1 kg. The target was mounted on
low-friction wheels and as the bullet struck the target, the target with
bullet embedded bullet sped off with a velocity of 6.0 ms.
Calculate the velocity of the bullet just before it hit the stationary
target.
Answer:
306 m/s
Explanation:
Law of conservation of momentum
m1v1 + m2v2 = (m1+m2)vf
m1 is the bullet's mass so it is 0.1 kg
v1 is what we're trying to solve
m2 is the target's mass so it is 5.0 kg
v2 is the targets velocity, and since it was stationary, its velocity is zero
vf is the velocity after the target is struck by the bullet, so it is 6.0 m/s
plugging in, we get
(0.1 kg)(v1) + (5.0 kg)(0 m/s) = (0.1 kg + 5.0 kg)(6.0 m/s)
(0.1)(v1) + 0 = 30.6
(0.1)(v1) = 30.6
v1 = 306 m/s
The initial velocity of the bullet can be determined from the total momentum of the system. The velocity of the bullet was 306 m/s.
What is momentum ?Momentum of a body is the product of its mass and velocity. For a collision, the momentum before and after collision will be the same for the colliding system.
Let m1 and m2 be the masses and u be the initial velocity and v is the final velocity.
then, m1 u1 + m2 u2 = m1 v1 + m2 v2.
Given m1 = 5 kg
m2 = 0.1 kg
The velocity of the combined mass v = 6 m/s.
The momentum of the target is zero since it was stationary.
(0.1 × u1) = (0.1 + 5)6 m/s
(0.1 × u1) = 30.6 m/s
then u1 = 30.6/0.1 = 306 m/s
Therefore, the velocity of the bullet before hitting was 306 m/s.
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Can someone help me with these questions pls
which of the following correctly describes the hierarchy of genetic material within a cell
Answer: D- Each chromosome in a cell is made up of two chromatids, which are each made up of molecules of DNA
Explanation:
A macromolecule is a large molecule that is made of many smaller units. Chromosomes are macromolecules that contain all of the genetic information in a cell. Chromosomes are each made of two smaller units called chromatids. Chromatids are each made up of molecules of DNA. Therefore, the correct description of the hierarchy of genetic material in a cell is that each chromosome in a cell is made up of two chromatids, which are each made up of molecules of DNA. The structures become more and more microscopic as one moves down the hierarchy.
Find the velocity of a runner who has a mass of 75 kg and 3,700 Joules of energy.
Answer:
125 joules
Explanation:
The velocity of the runner having a mass of 75 kg will be 9.93 m/s.
What is Kinetic energy of the body?
The energy of the body by virtue of its motion is called its kinetic energy.
Given is velocity of a runner who has a mass of 75 kg and 3,700 Joules of energy.
The kinetic energy of the body is given by the following formula -
KE = 1/2 mv².
Substituting the values -
3700 = 1/2 x 75 x v²
7400 = 75 x v²
v² = 7400/75
v² = 98.66
v = 9.93 m/s
Therefore, the velocity of the runner having a mass of 75 kg will be 9.93 m/s.
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+
1. Energy due to motion is
_______ energy
Answer:
Kinetic energy
Explanation:
The energy associated with an object's motion is called kinetic energy. A speeding bullet, a walking person, and electromagnetic radiation like light all have kinetic energy.
Kinetic energy. For example, a walking person.
is solar system a natural system or human-made system
Answer:
Natural
Explanation:
Answer:
It's a Natural System
Explanation:
When the Solar System was formed Human didn't even exist. the planets clashed and a lot of changes happened to create earth and different planets.
When we say the energy in a system remains "constant" what we really
mean is...
1 point
the total amount of energy goes up
the total amount of energy remains the same
the total amount of energy goes down
the speed remains the same
of the following is NOT a form of energy?
The total amount of energy remains the same.