Answer:
A. 425 Hz
Explanation:
So if you plug in 430 for f1 or f2 (doesn't matter which) and 5 for fbeat. It becomes an algebra problem.
formula used: : beat frequency is equal to the absolute value of frequency 1- frequency 2
A 100 kg bungee jumper leaps from a bridge. The bungee cord has an un-streched equilibrium length of 10 m, and a spring constant of 35 N/m. What is the greatest vertical distance below the bridge surface that the bungee jumper will reach? Enter your answer as a positive number in meters, but do not enter units.
Answer:
11.78meters
Explanation:
Given data
Mass m = 100kg
Length of cord= 10m
Spring constant k= 35N/m
At the greatest vertical distance, the spring potential energy is equal to the gravitational potential energy
That is
Us=Ug
Us= 1/2kx^2
Ug= mgh
1/2kx^2= mgh
0.5*35*10^2= 100*9.81*h
0.5*35*100=981h
1750=981h
h= 1750/981
h= 1.78
Hence the bungee jumper will reach 1.78+10= 11.78meters below the surface of the bridge
Answer:
[tex]X=74.7[/tex]
Explanation:
From the question we are told that:
Mass [tex]m=100kg[/tex]
Length [tex]l=10m[/tex]
Spring constant [tex]\mu=35N/m[/tex]
Generally the equation for potential energy of mass is mathematically given by
[tex]P.E_m=mgh[/tex]
Since
[tex]P.E_m=P.E_s[/tex]
Where
P.E_s =potential energy of spring
Therefore
[tex]m*g*(x+10) = 0.5*k*\mu^2[/tex]
[tex]100*9.8*(x+10) = 0.5*35*\mu^2[/tex]
[tex]980*(x+10) = 17.5*\mu^2[/tex]
[tex]980*x+9800 = 17.5*\mu^2[/tex]
[tex]17.5*\mu^2 - 980*\mu - 9800 = 0[/tex]
Comparing the equation above with standard quadratic equation
[tex]17.5*\mu^2 - 980*\mu - 9800 = 0[/tex]
[tex]ax^2+bx+c=0[/tex]
Giving
[tex]a=17.5\\ b=-980\\ c=-9800[/tex]
Solving Quadratic equation the roots of the equation is given as
[tex]\mu_1=64.66[/tex]
[tex]\mu_2=-8.661[/tex]
Since
[tex]\mu[/tex] can not be -ve
Therefore
The vertical distance attained by the bungee jumper is given as
[tex]X=\mu+l[/tex]
[tex]X=64.7+10[/tex]
[tex]X=74.7[/tex]
Which energy conversion correctly shows the law of conservation of energy?
A. Chemical energy kinetic energy + heat energy
44,000J 12,000J 32,000J
B. Potential energy electrical energy + heat energy
100,00J 40,000J 500,000J
C. Nuclear energy light energy + heat energy
90,000J 27,000J 113,000J
Answer: A
the answer is a
Answer:the answer is a according to diverse exponential formula i got it right on my test
Explanation:
[tex] \bigstar[/tex] A uniform resistance wire is stretched till it's length becomes four times.What happens to the resistance ?
*Plagiarised / Irrelevant answers will be reported!
Answer:
if a uniform resistance wire is stretched till it's length becomes four times the the resistance of wire multiples by sixteen times as resistance is directly proportional to the
length of wire.
hope it helps.
stay safe healthy and happyAnswer:
we have:
At unit length
Resistance [R]=[tex] \frac{pL}{A} [/tex].....i
where
p: resistivity
L:length
A:area
when
length is strength 4 times
length will be 4L
Now
new equation becomes
Resistance[R] =[tex] \frac{p4L}{A} [/tex]=4[tex] \frac{pL}{A} [/tex]=4R
so
when A uniform resistance wire is stretched till it's length becomes four times. the resistance increases by four times of its original resistance.
Two positive charges of same magnitude are separated by some distance if we bring a unit positive charge from one charge to another electric potential ?
Answer:
Increases.
Explanation:
The electric potential increases when the two positive charges of same magnitude bring close to one charge to another because there is repulsive force between them due to same charge and when the two opposite charges move away from each other, the potential energy decreases. When two opposite charges are brought closer together, electric potential energy decreases while on the other hand, when we move opposite charges apart from each other than the work done against the attractive force that leads to an increase in electric potential energy.
u.
II. Match the following.
Column B
Column A
1. Acceleration - A. A tendency of a body to keep moving.
2. Kinematics - D B.Fastness and direction of a body.
3. Inertia
C.An opposite force.
4. Velocity
D.A study of moving bodies.
5. Reaction -
E. A state of balance of forces on a body and
the body remains either at rest or in uniform
motion.
F. An increase in a body's speed.
G. An increase in a body's velocity.
Answer:
1. F and G.
2. D
3. A and E.
4. B
5. C
Explanation:
1. Acceleration: An increase in a body's velocity. An increase in a body's speed.
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.
2. Kinematics: a study of moving bodies i.e physical objects in motion.
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
3. Inertia: A tendency of a body to keep moving. A state of balance of forces on a body and the body remains either at rest or in uniform motion.
Inertia can be defined as the tendency of an object or a body to continue in its state of motion or remain at rest unless acted upon by an external force.
In physics, Sir Isaac Newton's First Law of Motion is known as Law of Inertia and it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.
4. Velocity: Fastness and direction of a body.
Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.
5. Reaction: an opposite force.
Newton's third law of motion states that for every action there is an equal and opposite reaction.
Action-reaction force pairs make it possible for fishes to swim, birds to fly, cars to move, etc.
Baker's weight and mass are measured on Earth and on the moon. Which measurement is the same in both places?
Answer: mass
The mass of a person is constant, weight is a force that is influenced by gravity.
what is the refractive index between glass and water?
Answer:
The Refractive index of water is 1.3 and the refractive index of glass is 1.5.
Una persona ha de fer una força horitzontal de 400 N per arrossegar amb M.R.U. Un moble de 900 N. El moble es desplaça 5 m sobre el sòl, que és horitzontal. Calcula el treball realitzat per la força que exerceix la persona, per la força de fregament i pel pes del moble.
Answer:
Parte A
2000 J
Parte B
400 N
Parte C
900 N
Explanation:
Los parámetros dados son;
La fuerza horizontal con la que la persona arrastra los muebles = 400 N
El peso de los muebles = 900 N
La distancia que se mueve el mueble en el piso = 5 m
El tipo de movimiento del mueble = M.R.U. Movimiento de línea uniforme
Por lo tanto;
Parte A
Trabajo realizado = Fuerza × Dirección de movimiento de la fuerza
Por lo tanto;
Trabajo realizado en, W = 400 N × 5 m = 2000 J
Parte B
La fuerza horizontal aplicada para arrastrar el mueble = 400 N = La fuerza de fricción que actúa sobre el mueble
La fuerza de fricción que actúa sobre el mueble = 400 N
Parte C
El peso de los muebles se toma como dado 900 N.
In order to determine the speed of an object, what measurements must be made?
Answer:
You need to have the distance traveled and the time it took to travel that distance.
Explanation:
I really need help with this question
Why does the static electricity in an object not constantly shock us?
Answer:Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.
Explanation:
hope this helped D:
The application of a force that causes an object to move in the direction of the force is ______.
Power
Work
Kinetic energy
Distance
Answer:
work is the answer because work is said to be done if an object is displaced by the application of force
what is 7/3 because it wont work for me pls help
Answer:
7/3 = 2 1/3
Explanation:
If the numerator is greater than or equal to the denominator of a fraction, then it is called an improper fraction. In that case, you could convert it into a whole number or mixed number fraction. 7/3 = 2 1/3.
Answer:
2.3333 (3-repeating) hope that helps
Atoms in group 18 are inert (chemicalally unreactive) because
Answer:
They have a full shell of valence electrons and are very stable .
Explanation:
Answer
atoms in group 18 are chemically inert because they are stable and do not take part in any chemical reaction.
Explanation:
Show that potential difference can be described as energy transferred per unit charge between the two points.
Answer:
The potential difference, ΔV, between two points in the electric field can be described as the potential energy transferred per unit charge, ΔU/q₀ , between the two points
ΔV = ΔU/q₀
Explanation:
The force, F, acting on a test charge, q₀, placed in an electric field E is given as follows;
F = q₀·E
The work the electric field does on the charge, W =dU = F·ds = q₀·E''·dS
[tex]\Delta U = q_0 \times \int\limits^B_A {E \cdot } \, ds[/tex]
The electric potential difference, ΔV, between two points in the electric which is the change in the energy of the system when a test charge is moved between points in the field is goven as follows;
[tex]\Delta V = \dfrac{\Delta U}{q_0} = -\int\limits^B_A {E \cdot } \, ds[/tex]
Therefore, given that, we have;
[tex]\Delta V = \dfrac{\Delta U}{q_0} = \dfrac{-q_o \times \int\limits^B_A {E \cdot } \, ds}{q_0} = \dfrac{F \cdot ds}{q_0} = \dfrac{W}{q_0}[/tex]
Therefore, the potential energy transferred per unit charge, ΔU/q₀ can be described as the potential difference between two points in the electric field, and vice versa.
A force(F), acting on a charged particle, [tex]q_0[/tex], placed in an electric field E is given by the following:
[tex]\to F = q_0 \times E[/tex]
An effect of an electromagnetic current on a charge[tex]\to W =dU = F\times ds = q_0 \times E''\times dS\\\\ \to \Delta U= q_0 \times \int^{B}_{A} \ E \cdot ds\\\\[/tex]
An electric potential differential, [tex]\Delta V[/tex], across two places inside the electric field, that represents the change in energy of a system when a testing charge is moved between points in the field, is calculated as follows.[tex]\to \Delta V =\frac{\Delta U}{q_0} =-\int^{B}_{A} E \cdot ds\\\\[/tex]
Therefore, given that, we have;[tex]\to \Delta V =\frac{\Delta U}{q_0} = \frac{-q_0 \times \int^{B}_{A} E \cdot ds}{q_0} =\frac{F \cdot ds}{q_0}=\frac{W}{q_0}\\\\[/tex]
As a result, the potential energy transmitted per unit charge, [tex]\frac{\Delta U}{q_0}[/tex], may be represented as the potential difference between two places in the electromagnetic current, and vice versa.So, the final answer is:
A potential difference, [tex]\Delta V[/tex], between 2 points in an electric field could be described as the potential power transmitted per unit of charge, [tex]\frac{\Delta U}{q_0}[/tex], between the 2 points.[tex]\to \Delta V=\frac{\Delta U}{q_0}[/tex]
Learn more about the potential difference:
brainly.com/question/12198573
A plate falls to the floor. When is its potential energy
the lowest?
1.in mid-fall
2.Immediately after it begins to fall
3.When its kinetic energy is the highest
4.Before it falls
Answer:
I think it's 3
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
please somebody help i took screenshot ik there is a blank space but look down a little
Answer:
Force has a direct relationship to mass and acceleration. Newton's Second Law, force equals mass times acceleration (F=MA), illustrates their general relationship in an equation.
Explanation:
Relationships to remember:
Force and acceleration have a direct relationship, meaning if force increases, acceleration will also increase and vice versa(Ex: The harder you push a box, the faster it will move)
Mass and acceleration have an inverse relationship, meaning if mass increases, acceleration will decrease and vice versa(Ex: If you add more furniture in the back of a moving company truck, the truck will move slower than it did before the furniture was added)
Force and mass have a direct relationship, meaning if mass increases, force will also increase(Ex: You will need to exert less force to lift a 5-pound weight than a 10-pound weight)
And of course, Newton's Second Law, F=MA sums all of this up in 3 letters and a symbol! If you have any more questions about this problem, please comment on my answer :)
If a 20 N force acts on a 10 kg object for 0.5 seconds. If the object starts at rest, what would it’s new p (momentum) and v (velocity) be?
Answer:
[tex]p=10\:\text{kgm/s}},\\v_f=1\:\text{m/s}[/tex]
Explanation:
From Newton's 2nd Law, we have [tex]\Sigma F=ma[/tex]. We can use this to find the acceleration of object after 20 N (force) is applied to the 10 kg object.
Substituting given values, we have:
[tex]\Sigma F=ma, \\20=10a,\\a=\frac{20}{10}=2\:\mathrm{m/s^2}[/tex]
Now that we have acceleration, we can find the final velocity of object (after 0.5 seconds) using the following kinematics equation:
[tex]v_f=v_i+at[/tex], where [tex]v_f[/tex] is final velocity, [tex]v_i[/tex] is initial velocity, [tex]a[/tex] is acceleration, and [tex]t[/tex] is time.
Solving for final velocity:
[tex]v_f=0+2\cdot 0.5,\\v_f=\boxed{1\:\text{m/s}}[/tex]
The momentum of an object is given as [tex]p=mv[/tex]. Since we've found the final velocity and mass stays constant, we have:
[tex]p=10\cdot 1=\boxed{10\:\text{kgm/s}}[/tex]
factorise the following - 6x³ + 3x² + 8x + 4 ?
p(1) = -16 x (1)³ + 3 x (1)² + 8 x 1 + 4
= -16 + 3 + 8 + 4
= -16 +16
=0
007 (part 1 of 2) 1.0 points
Light moves from flint glass (n = 1.66) into
water at an angle of incidence of 27.2º.
a) What is the angle of refraction?
Answer in units of".
008 (part 2 of 2) 1.0 points
b) At what angle would the light have to be
incident to give an angle of refraction of 90.0°
Answer in units of
Answer:
a) The angle of refraction is approximately 34.7
b) The angle the light have to be incident to give an angle of refraction of 90° is approximately 53.42°
Explanation:
According to Snell's law, we have;
[tex]\dfrac{n_1}{n_2} = \dfrac{sin (\theta_2)}{sin (\theta_1)}[/tex]
The refractive index of the glass, n₁ = 1.66
The angle of incident of the light as it moves into water, θ₁ = 27.2°
a) The refractive index of water, n₂ = 1.333
Let θ₂ represent the angle of refraction of the light in water
By plugging in the values of the variables in Snell's Law equation gives;
[tex]\dfrac{1.66}{1.333} = \dfrac{sin (\theta_2)}{sin (27.2^{\circ})}[/tex]
[tex]sin (\theta_2) = sin (27.2^{\circ}) \times \dfrac{1.66}{1.333} \approx 0.5692292265[/tex]
θ₂ = arcsin(0.5692292265) ≈ 34.7°
The angle of refraction of the light in water, θ₂ ≈ 34.7°
b) When the angle of refraction, θ₂ = 90°, we have;
[tex]\dfrac{1.66}{1.333} = \dfrac{sin (90^{\circ})}{sin (\theta_1)}[/tex]
[tex]sin (\theta_1) = \dfrac{sin (90^{\circ})}{\left( \dfrac{1.66}{1.333}\right)} = sin (90^{\circ}) \times \dfrac{1.333}{1.66} \approx 0.803[/tex]
θ₁ ≈ arcsin(0.803) ≈ 53.42°
The angle of incident, θ₁, that would give an angle of refraction of 90° is θ₁ ≈ 53.42°
could sum1 explain this for 17 points please?
Answer:
If the potential energy change of each cart is the same, then the total mechanical energy change is the same for each cart
Explanation:
Hills look steeper when standing back from the edge so that gaze is nearly parallel to the surface of the hill. When optical slant (the angle between the center of gaze and the surface) is small, surface orientation is pulled toward the direction of gaze
The distance from Abdullah's house to his school is 2.4km. Abdulla takes 0.6h to go to school on his cycle but takes only 0.4h to return home. His average speed is
Answer:
The average speed can be calculated as the quotient between the distance travelled and the time needed to travel that distance.
To go to the school, he travels 2.4 km in 0.6 hours, then here the average speed is:
s = (2.4km)/(0.6 hours) = 4 km/h
To return to his home, he travels 2.4km again, this time in only 0.4 hours, then here the average speed is:
s' = (2.4 km)/(0.4 hours) = 6 km/h.
Now, if we want the total average speed (of going and returning) we have that the total distance traveled is two times the distance between his home and school, and the total time is 0.6 hours plus 0.4 hours, then the average speed is:
S = (2*2.4 km)/(0.6 hours + 0.4 hours)
S = (4.8km)/(1 h) = 4.8 km/h
PLEASE ANSWER THIS ASAP THIS IS A SCIENCE QUESTION NO LINKS
Answer:
I believe the answer would be kinetic energy to thermal energy.
Explanation:
Thermal energy is the heat of the brakes, and the kinetic energy would be when the car is in motion before stopping.
A parachute on a racing dragster opens and changes the speed of the car from 93 m/s to 45 m/s in a period of 5.3 seconds. What is the acceleration of the dragster?
Answer:
[tex]-9.06\:\mathrm{m/s^2}[/tex]
Explanation:
We can use the following kinematics equation to solve for acceleration:
[tex]v_f=v_f+at[/tex].
Solving for [tex]a[/tex]:
[tex]45=93+5.3a,\\-48=5.3a,\\a\approx \boxed{-9.06\mathrm{m/s^2}}[/tex]
*Note: Since acceleration is a vector quantity, it has both magnitude and direction. The negative sign implies that the acceleration is in the opposite direction of the racing dragster's movement.
Calcular la cantidad de solucion que se encuentra en un recipiente con 670 g de solvente y 22 g de soluto
Answer:
692 g
Explanation:
La fórmula para encontrar la solución de una mezcla química es agregar el soluto y el solvente juntos. Esto significa
Solución = solvente + soluto
Solución = 670 g + 22 g
Solución = 692 g
es así de simple, y espero que lo entiendas
Do you think the mass of an object greatly affects the coefficient of friction?
Answer:
no it doesn't
Explanation:
How to use electromagnetic spectrum in a sentence?
Answer:
The enemy can use his vision across a broadband of the electromagnetic spectrum . Our century has seen the entire electromagnetic spectrum opened for business.
Explanation:
Fill in the blank: Friction applies to all states of matter in the gas state it is called ________ resistance and in a liquid it's called ___________ resistance. Air resistance can be used to slow the fall of an object. Parachutes are usually made out of light, strong fabric, originally silk, now most commonly nylon. They are typically dome-shaped, but vary, with rectangles, inverted domes, and others found
Answer:
Drag; water.
Explanation:
Friction can be defined as a force that resists the relative motion of two objects when there surface comes in contact. Thus, it prevents two surface from easily sliding over or slipping across one another. Also, friction usually reduces the efficiency and mechanical advantage of machines but can be reduced through lubrication.
Generally, there are four (4) main types of friction and these includes;
I. Static friction.
II. Rolling friction.
III. Sliding friction.
IV. Fluid friction.
Fluid friction can be defined as a type of friction that acts on physical objects moving through a liquid or gas. A fluid refers to any physical substance that can flow and is able to take the shape of a container.
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Basically, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.
Generally, friction applies to all states of matter; in the gaseous state, it is called drag resistance and in a liquid it's called water resistance.
what is the answer to bliky got sticky yuh all over mickey
Answer:
huh
Explanation:
Answer:
whaaaaaaaa
Explanation:
What can be the maximum size of a black hole?
Answer:
hello! your answer is fifty billion M