Answer:
Explanation:
Use the equation
[tex]E=\frac{q}{F}[/tex] where the charge, q, on the electron is 1.602 × [tex]10^{-19[/tex] :
[tex]E=\frac{1.602*10^{-19}}{8.3*10^{-20}}[/tex] so
E = 1.9 C/N
what is the mathematical relationship among voltage current and resistance
Answer:
The relationship between voltage, current, and resistance is described by Ohm's law. This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r.
Your dog ran away from home at 1:00 this afternoon. It is now 1:30. You know that he walks with an average speed of 1 m/s. Which of the following pieces of information is most important for finding your dog?
Answer:
30m/s
Explanation:
Which direction the dog is going is the piece of information which is most important for finding the dog. Thus, the correct option is C.
What is Average speed?The average speed is the total distance traveled by the object in a particular interval of time period. The average speed is a scalar quantity because it is represented by the magnitude only and does not have direction. The SI unit of average speed is the same as speed which is meter per second (m/s) or ms⁻¹.
Average speed = Total distance traveled by the object/ Total time taken
One of the most important thing for the finding of dog is the direction in which the dog is going.
Therefore, the correct option is C.
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Your question is incomplete, most probably the complete question is:
Your dog ran away from home at 1:00 this afternoon. It is now 1:30. You know that he walks with an average speed of 1 m/s. Which of the following pieces of information is most important for finding your dog?
A. whether the dog has eaten recently
B. if the dog was chasing a squirrel
C. which direction the dog is going
D. whether the dog is alone
How can we protect space shuttles or astronauts from space radiation in the absence of the atmospheric layer?
What is the role of gravity in maintaining the atmospheric layer around the earth ?
WILL MARK AS BRAINLIEST
Arches National Park is a desert landscape located in Utah. The park is filled with arches that have been formed by nature. The arches were once solid rock. Over time, extreme temperature changes and windy conditions have caused pieces of rock to crumble and blow away, leaving holes in the rock and forming the arches. Which of these processes is responsible for the formation of the arches?
a.cooling magma
b.weathering and erosion
c.compaction and cementation
d.increased geological pressures
When you drop a penny off the roof of a building, it takes 16 seconds to reach
the ground. How high is the roof?
Answer:
Explanation:
I'll do this in both meters and feet, since you don't specify which you need. Since we are only dealing in the y-dimension:
Δx = ???
a = -9.8 m/s/s
v₀ = 0
t = 16 sec
In the equation:
Δx = v₀t + [tex]\frac{1}{2}at^2[/tex] we fill in accordingly:
Δx = [tex]0(16)+\frac{1}{2}(-9.8)(16)^2[/tex] which simplifies to
Δx = [tex]\frac{1}{2}(-9.8)(256)[/tex] so
Δx = -1300 m. Now in feet, it's the same equation but the acceleration is -32 ft/s/s:
Δx = [tex]\frac{1}{2}(-32)(256)[/tex] which is
Δx = -4100 ft (the negative signs here just indicate direction: the penny is this distance below the point from which it was dropped. So, obviously, to answer the question regarding the height of the building, you would say it was 1300 m high or 4100 feet high. The negative would be significant if we were asked instead "How far did the penny fall?" which would be the same answer to a slightly different question.)
Ocean zones can be classified based on distance from Shore into intertidal,
costal ocean, and open oceans.
True or false ?
Answer:
I think true
Explanation:
I hope I'm right and I hope it helps
Answer:
true
Explanation:
basta yun yung sagot ko
If the distance between two objects is increased to four times the original distance.how will that increase change the force of attraction between the object
Answer:
Gravitational force becomes sixteen times lesser. The strength of the gravitational force between two objects is dependent on their mass. Gravitational force will be weaker if the objects move further away from each other.
This was used to solve for the gravitational force,
G = gravitational constant
m = mass of the first object
M = mass of the second object
d = distance between the two objects
[G * (m*M) / 16d^2] = 1/16
A motor does a total of 480 joules of work in 5.0 seconds to lift a 12-kilogram block to the top of a rampThe average power developed by the motor is
Answer:
there it is fella
we neglect the mass data
Please help!! I need this asap I will mark brainliest!!
Answer:
50N to the right
Explanation:
You would find net force by adding the 20 and the 30 together since they are being pushed to the same side (the right). Therefore, the answer will be 50N to the right.
pls helppp thanks you for respond :))))
6) What is the definition of a simple machine? What are the two most basic ones?
7) Is it possible to get more work out of a machine than you put in? Why?
8) What is the official definition of heat energy? What is the source of that energy?
9) Compare and contrast heat with temperature. Explain using a bathtub of warm bath water and a tea-cup of boiling water.
10) Explain what specific heat is. How does it differ from both heat and temperature?
11) What is Latent heat? List all 3 physical constants of water.
Answer:
8) Heat energy is the form energy that is transferred from one object to another with different temperatures. Sun is the source of heat energy.
A 32.0 kg cart is at rest on a frictionless, horizontal surface. The cart experiences an unbalanced force, causing the cart to
accelerate at a rate of +5 m/s2
After traveling 200 meters, the cart no longer experiences an unbalanced force and did not interact with any other object. Select the response that correctly describes the motion of the cart after 200 meters.
A
The cart’s velocity will continue to increase at a rate of 5 m/s2.
B
The cart’s velocity will decrease because it is no longer accelerating.
C
The cart will return to a state of rest.
D
The cart will continue to travel at a constant velocity.
Answer:
D
Explanation:
the cart will continue to travel at constant velocity
*URGENT* Why is understanding motion so important? Be sure to explain in your own words.
Answer:
Motion is one of the important issues of Physics. We know that if we are not moving but still earth is moving. Motion is a bit of the machinist's Department of Physics. Several laws are provided for explaining the theory of motion and evolution in motion. The motion and transformation are defined in terms of strength which is wanted for creating an object in a motion state.
plz help i dont understand
A vehicle with a uniform velocity of 10ms^-1 is represented by which of the following graphs
Answer:
B.
Explanation:
A position-time graph is a graph of the position of an object against (versus) time. The slope of the line of a position-time graph is typically used to determine or calculate the velocity of an object.
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.
Mathematically, velocity is given by the equation;
[tex]Velocity = \frac{distance}{time}[/tex]
Uniform velocity can be defined as a situation in which a physical object or body travels equal distances in equal intervals of time along a fixed direction, regardless of how small the interval may be.
During uniform velocity, both the magnitude and direction of the physical object in motion do not change with respect to time. Also, an object in uniform velocity has zero tangential acceleration and its graph is a straight line parallel to the time axis.
Hence, a vehicle with a uniform velocity of 10 meters per seconds (m/s) is represented by Graph B.
Señala cual de las siguientes propiedades de una sustancia son propiedades características= masa densidad volumen belleza conductividad eléctrica
Answer:
i) densidad
ii) conductividad eléctrica
Explanation:
Las propiedades características de una sustancia se denominan también propiedades intrínsecas. Estas son propiedades que no dependen de la cantidad de sustancia presente.
Las propiedades características se pueden utilizar para identificar una sustancia porque son propiedades que siempre debe exhibir la sustancia.
Entre las opciones, podemos encontrar las siguientes sustancias características;
i) densidad
ii) conductividad eléctrica
Two closed organ pipe gives 4 beats when sounded together at 5°C. Calculate the number of beats in 35°C
Answer:
The number of beats is 10.58 in 35°C.
Explanation:
The beat frequency is given by : f₁-f₂
At 5°C, f₁-f₂ = 4
We need to find the number of beats in 35°C.
The frequency in a standing wave is proportional to [tex]\sqrt T[/tex].
So,
[tex]\dfrac{f_1-f_2}{f_1'-f_2'}=\dfrac{\sqrt {T}}{\sqrt{T'}}\\\\f_1'-f_2'=(f_1-f_2)\times \dfrac{\sqrt{T'}}{\sqrt{T}}\\\\f_1'-f_2'=4\times \dfrac{\sqrt{35}}{\sqrt{5}}\\\\f_1'-f_2'=10.58[/tex]
So, the number of beats is 10.58 in 35°C.
if the weight of 1kg is 10 N in water what is the density of the stone
Answer:
I have a screenshot of this.
Explanation:
A light bulb is connected to two batteries. Each battery has 1.5V. If a student measures the current flowing through the light bulb to be 2 A, What is the resistance of the light bulb?
Answer:
R = 0.75 ohms
Explanation:
Given that,
The voltage of each battery, V = 1.5 V
Current through the light bulb, I = 2 A
We need to find the resistance of the light bulb. We know that,
Ohm's law, V = IR
Where
R is the resistance of the light bulb
Put all the values,
[tex]R=\dfrac{V}{I}\\\\R=\dfrac{1.5}{2}\\\\R=0.75\ \Omega[/tex]
So, the resistance of the light bulb is equal to 0.75 ohms.
What is the reaction force if a girl pulls on a cow?
A) The girl applies a force to the ground.
B) The cow pulls back on the girl.
C) The girl slides back toward the cow.
D) The cow moves forward
The framework of the human body consists of: (Select all that apply.)
water
tendons
muscles
lungs
ligaments
skin
bones
Answer:
muscles, skin, and bones.
Explanation: Hope this helps! :)
When heat is transferred by the
movement of particles it is called..
Answer:
convection
Explanation:
Convection is a mode of heat transfer in which the molecules near the heat source get heated up, expand, become less dense, and rise upwards. The cooler molecules, on the other hand, sink to the bottom and are eventually heated up. Thus the transmission of heat by the movement of heated particles is called convection.
A pickup truck of mass 3500 kg moving at 72 kmh-1 collides head-on with a car of mass 2000 kg moving in the opposite direction. After colliding, both the pickup and the car came to rest.
(i) An 8 grade physics student commented that the law of conservation of momentum was NOT upheld in this collision, since both vehicles were moving before the collision and none of them was moving after colliding. State whether or not you agree with the student's comment and give a reason why you agree or disagree.
Answer:
Explanation:
The Law of Momentum Conservation says that the mass times the velocity of the truck + the mass times the velocity of the car BEFORE they hit has to = the mass of the tuck times the velocity of the truck + the mass of the car times the velocity of the car AFTER they hit. If we don't know the velocity of the car, we can solve for it, and then we can say that Momentum has been conserved. Before I do that, I am going to tell you that 72 kmh is 20 m/s.
[tex](3500*20+2000x)_b=0_a[/tex] The 0 is because if there is no velocity after they hit, it doesn't matter what the velocities are; anything times 0 is 0.
70,000 + 2000x = 0 where x is the velocity of the car
70,000 = -2000x so
x = -35.
As long as the car was initially traveling 35 m/s in the opposite direction )hence, the - sign), momentum is conserved. So I'm not sure exactly how you can answer this otherwise.
what would a permanetly magnetic substance be called
Answer:
A Permanent magnet or a static magnet
Explanation:
A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic).
The atomic number of a nucleus decreases during which nuclear reactions?
Spaceship 1 and Spaceship 2 have equal masses of 150 kg. Spaceship 1 has an initial momentum magnitude of 900 kg-m/s. What is its initial speed?
A. 9 m/s
B. 6 m/s
C. 90 m/s
D. 60 m/s
Answer:
ans: 6 m/s
Explanation:
spaceship 1 has mass= 150kg
initial momentum of spaceship 1 = 900 kg•m/s
we know,
momentum = mass × velocity
so,
velocity = momentum/mass
= 900 / 150
= 6 m/s
since we know it was initial momentum so, velocity is initial speed,
Which car safety features absorb kinetic energy?
A. Seat belts and air bags
B. Seat belts and crumple zones
C. Seat belts, crumple zones and air bags
Answer:
C
Explanation:
Seat belts absorb kinetic energy when a car crashes because it pulls you back from falling forward given the kinetic energy (and momentum) you had before the crash.
Air bags absorb kinetic energy when a car crashes because it pushes you back from falling forward given the kinetic energy (and momentum) you had before the crash.
Crumple zones absorb kinetic energy when a car crashes because it provides a cushion when the cars crash. Kind of like dropping your phone into a pillow.
I hope this helps! :)
Answer:
C. Seat belts, crumple zones and air bags
Explanation:
All of these car safety features absorb kinetic energy, including seat belts, crumple zones and air bags.
The speed of light in vinegar is 2.30 x 10^8 m/s. Determine the index of refraction. (2
Answer:
[tex]n _{v} = \frac{c}{v} \\ = \frac{3 \times {10}^{8} }{2.30 \times {10}^{8} } \\ = 1.30[/tex]
This question involves the concept of refractive index.
The refractive index of the vinegar is "1.3".
What is the Refractive Index?The refractive index is defined as the ratio of the speed of light in air and the speed of light in the given medium which is vinegar here.
[tex]\eta = \frac{c}{v}[/tex]
where,
[tex]\eta[/tex] = refractive index = ?c = speed of light in air = 3 x 10⁸ m/sv = speed of light in vinegar = 2.3 x 10⁸ m/sTherefore,
[tex]\eta = \frac{3\ x\ 10^8\ m/s}{2.3\ x \10^8\ m/s}[/tex]
η = 1.3
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6.02 × 104 × 7.54 × 10-6
Answer:
18882.5728
Explanation:
Calculator.
Answer:
47.200,432
Explanation:
6.02 × 104 = 628,08
628.08 × 7,54 = 4720,6432
4720,6432 × 10 = 47.206,432
47.206,432 - 6 = 47.200,432
When light hits something like a raindrop or a prism, it will...
it will
One: Diffract
Two: Be Absorbed
or
Three: Refract
Answer:
three: refracts
the light bends when passing thought a raindrop or prism
Una cuerda de 20 pies se estira entre dos arboles. Un peso W cuelga del centro de la cuerda hace que el punto medio de la misma y baja 2 pies. Si la tensión resultante en la cuerda es de 200 lb,¿cual es la manigtud de la masa?
Answer:
La magnitud de la masa del peso es 78.447 libras-masa.
Explanation:
La tensión es una fuerza de reacción de la cuerda causada por la acción de una fuerza externa. En este caso, esa fuerza externa es el peso que cuelga en el centro de la cuerda. Abajo hemos adjuntado una representación simplificada del enunciado.
Por las leyes de Newton, tenemos la siguiente ecuación de equilibrio conformada por tres fuerzas:
[tex]\vec T_{1} + \vec T_{2} + \vec W = (0, 0)\, [N][/tex] (1)
Donde:
[tex]\vec T_{1}[/tex], [tex]\vec T_{2}[/tex] - Tensiones a cada lado de la cuerda, en newtons.
[tex]\vec W[/tex]- Peso, en newtons.
Si sabemos que [tex]\vec T_{1} = T\cdot (\cos \alpha, \sin \alpha)[/tex], [tex]\vec T_{2} = T\cdot (-\cos \alpha, \sin \alpha)[/tex] y [tex]\vec W = W\cdot (0, -1)[/tex], entonces tenemos la siguiente ecuación vectorial:
[tex]T\cdot (\cos \alpha, \sin \alpha) + T\cdot (-\cos\alpha, \sin \alpha) + W\cdot (0, -1) = (0,0)[/tex]
[tex]T\cdot (0, 2\cdot \sin \alpha) = W\cdot (0, 1)[/tex]
Esto permite reducir la anterior expresión a una fórmula escalar:
[tex]2\cdot T\cdot \sin \alpha = W[/tex]
Donde [tex]\alpha[/tex] es el ángulo de inclinación de la cuerda, medido en grados sexagesimales.
El ángulo de inclinación de la cuerda se determina mediante la siguiente fórmula trigonométrica inversa es:
[tex]\alpha = \tan^{-1} \left(\frac{2\,ft}{10\,ft}\right)[/tex]
[tex]\alpha \approx 11.310^{\circ}[/tex]
Si conocemos que [tex]\alpha \approx 11.310^{\circ}[/tex] y [tex]T = 200\,lbf[/tex], entonces la magnitud del peso es:
[tex]W = 2\cdot (200\,lb)\cdot \sin 11.310^{\circ}[/tex]
[tex]W \approx 78.447\,lbf[/tex]
En el Sistema Imperial, las fuerzas son medidas en forma gravitacional, entonces la magnitud de la fuerza gravitacional del peso equivale a la magnitud de su masa. En síntesis, la magnitud de la masa es [tex]78.447\,lbm[/tex].
La magnitud de la masa del peso es 78.447 libras-masa.
What type of wave behavior is pictured above? *
absorption
refraction
diffraction
reflection
