Answer:
s = 11.46 m
Explanation:
Since, the reaction time is 0.75 s. Hence, the brakes shall be applied after this time. So, the car will start to slow down after covering a distance at the constant speed during this time. This distance can be given as follows:
s = vt
where,
s = distance covered by car before slowing down = ?
v = speed of car = (55 km/h)(1 h/3600 s)(1000 m/1 km) = 15.28 m/s
t = reaction time = 0.75 s
Therefore,
s = (15.28 m/s)(0.75 s)
s = 11.46 m
PLEASE HELP!
List the wavelengths in order from longest wavelength to shortest
Answer: Radio waves, Microwaves infrared, optical ultraviolet, X-rays and gamma-rays
When there are faster vibrations are more or less waves formed?
Please answer as soon as possible its due really soon
I think it's more waves
If you have two wires made out of the same material and the same thickness, one is 3-inches long and one is 6-inches long, which one has the greater resistance?
plz help!!
Answer:
The 3-inch wire has greater resistance.
Explanation:
The only difference between the wires is their length. According to the formula for resistance, the longer wire will have greater resistance.
What is Ohm's law?Ohm's law is a fundamental law of electrical circuits that describes the relationship between voltage, current, and resistance in a conductor. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. This law is named after Georg Simon Ohm, a German physicist who first stated it in 1827.
The mathematical equation for Ohm's law is:
V = IR
Where:
V is the voltage or potential difference measured in volts (V)
I is the current flowing through the conductor measured in amperes (A)
R is the resistance of the conductor measured in ohms (Ω)
This equation states that the voltage (V) applied across a conductor is equal to the product of the current (I) flowing through the conductor and the resistance (R) of the conductor.
In other words, Ohm's law tells us that if we increase the voltage applied to a conductor, the current flowing through it will also increase, assuming the resistance stays constant. Similarly, if we increase the resistance of a conductor, the current flowing through it will decrease, assuming the voltage stays constant.
Ohm's law is an essential concept in electrical engineering and is used extensively in the design and analysis of electrical circuits. It allows us to predict how changing the voltage, current, or resistance in a circuit will affect the other two variables.
Here in the question,
Assuming that the wires have the same cross-sectional area and are made of the same material, the longer wire will have greater resistance. This is because the resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area.
The resistance of a wire can be calculated using Ohm's law: R = V/I, where R is resistance, V is voltage, and I is current. The resistance can also be calculated using the formula: R = ρL/A, where ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire.
Since the wires are made of the same material and have the same thickness, their cross-sectional areas will be the same.
Therefore, the only difference between the wires is their length. According to the formula for resistance, the longer wire will have greater resistance.
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Draw the Lewis dot Structure for the molecule C2H6
Answer:
This means that the Lewis dot structure for C2H6 must account for 14 valence electrons, either through bonding between atoms, or through lone pairs. So, the two C atoms are placed in the center of the molecule.
Dropping a rock from 4 feet in the air is an example of what type of energy?
Answer:
The type of energy is potential energy
How did the hermit receive the king and how did he pass his time with the hermit
Answer:
Explanation:
As the king came near the hermit's hut, he saw the hermit digging the ground in front of his hut. He greeted the king and continued digging. ... (ii) The hermit saw simple people only, so the king put on simple clothes to visit him. (iii) The hermit was digging the ground in front of his hut when the king visited him.
A 700 kg car makes a turn going at 30 m/s with radius of
curvature of 120 m. What is the force of friction between the car's tires and the road?
Answer:5250 N
Explanation: ig:iihoop.vince
The force of friction between the car's tires and the road is 5250 N
Centripetal force is the force that is perpendicular to an object moving in circular motion. It is given by:
F = mv²/r
where m is the mass of object, v is the velocity and r is the radius of circle.
Given that m = 700 kg, v = 30 m/s, r = 120 m, hence:
F = mv²/r = 700 * 30²/120 = 5250 N
The force of friction between the car's tires and the road is 5250 N
Two particles A and B move at a constant speed in circular paths at the same angular speed ω. Particle A's circle has a radius that is the length of particle B's circle. What is the ratio vA/vB of their translational speeds?
Answer:
2:1
Explanation:
It is given that,
Two particles A and B move at a constant speed in circular paths at the same angular speed ω.
Particle A's circle has a radius that is the length of particle B's circle.
We need to find the ratio of vA/vB of their translational speeds.
As the angular speed is same. The relation between angular and linear speed is given by :
[tex]\omega=\dfrac{v}{r}\\\\\omega_A=\omgega_B\\\\\dfrac{v_A}{r_A}=\dfrac{v_B}{r_B}[/tex]
As [tex]r_A=2r_B[/tex]
So,
[tex]\dfrac{v_A}{2r_B}=\dfrac{v_B}{r_B}[/tex]
[tex]\dfrac{v_A}{v_B}=2[/tex]
So, the ratio of their translational speeds is 2:1.
Express the vector R
in terms of A, B, C, and D, the edges of a
parallelogram.
Answer:
vector R= vector B- vector D As A,B,C,D are edges of the parallelogram, A is parallel to D but opposite in direction.
Explanation:
This is for science someone please help me ASAP I’ll give you brainlest
the words are evaporation, sublimation, condensation, precipitation, runoff, transpiration, and infiltration
Answer: 7 - Transpiration, 6 - Infiltration, 5 - Runoff, 4 - Evaporation, 3 - Precipitation, 2 - Condensation, 1 - Sublimation,
Explanation:
Can two or more than two quantities have same dimensions?
Answer: Yes. you can search this question on the website quora
Explanation:
What is a Block Grant used for?
Answer:
Block grants provide state and local governments funding to assist them in addressing broad purposes, such as community development, social services, public health, or law enforcement, and generally provide them more control over the use of the funds than categorical grants
Explanation:
Answer:
Block grants provide state and local governments funding to assist them in addressing broad purposes, such as community development, social services, public health, or law enforcement, and generally provide them more control over the use of the funds than categorical grants
Explanation:
Hope this helped, Have a Wonderful Day!!
Why are scientists currently debating on whether viruses are alive or not?
I NEED AN ANSWER ASAP!!!!
They are because they don't know if viruses are alive and have a mind of its own or its just humans spreading it all around. Another reason is if they do find out they are alive or not they need to find solutions to kill them or to slow/stop the spreading.
Which resistors in the circuit are connected in series?
Answer:
c and D
Explanation:
The pressure exerted by a block of wood is 40 pa. If the force exerted by the block is 80N what is the surface area of the wood?
Answer:
Pressure = 40Pa
Force = 80N
Surface area = ?
Pressure = Force/Surface area
hence Surface area = Force/Pressure
Surface area = 80N/40Pa = 2m^2.
If the cause of a disease is considered
multifactorial, that means
Answer:
B) the disease is caused by more than one factor
Explanation:
Just did the assignment:)
Cual es la aceleracion en metros por segundo al cuadrado de un carro que cambia de velocidad de noventa kilometros por hora a veinte metros por segundo al cuadrado en seis segundos
Answer:
El carro decelera a una tasa de 0.833 metros por segundo cuadrado.
Explanation:
Inicialmente, convertimos la velocidad inicial del carro a metros por segundo:
[tex]v_{o} = 90\,\frac{km}{h}\times \frac{1}{3600}\,\frac{h}{s}\times 1000\,\frac{m}{km}[/tex]
[tex]v_{o} = 25\,\frac{m}{s}[/tex]
Si asumimos que el carro decelera de manera uniforme, entonces empleamos la siguiente ecuación cinemática para determinar la aceleración ([tex]a[/tex]), medida en metros por segundo al cuadrado:
[tex]a = \frac{v-v_{o}}{t}[/tex] (1)
Donde:
[tex]v_{o}[/tex], [tex]v[/tex] - Velocidades inicial y final, medidas en metros por segundo.
[tex]t[/tex] - Tiempo, medido en segundos.
Si sabemos que [tex]v_{o} = 25\,\frac{m}{s}[/tex], [tex]v = 20\,\frac{m}{s}[/tex] y [tex]t = 6\,s[/tex], entonces la deceleración del carro es:
[tex]a = \frac{20\,\frac{m}{s}-25\,\frac{m}{s} }{6\,s}[/tex]
[tex]a = -0.833\,\frac{m}{s^{2}}[/tex]
El carro decelera a una tasa de 0.833 metros por segundo cuadrado.
Thirty-five (35.0) mL of ozone (O3) is stored at a temperature of 285 K and a pressure of 150.0 Pa. If the pressure is decreased to 125 Pa, what will be the new temperature?
Answer:
Temperature T2 = 237.5 K
Explanation:
Given:
Volume = 35 ml
T1 = 285 k
P1 = 150 pa
P2 = 125 pa
Find:
Temperature T2
Computation:
P1V/T1 = P2V/T2
150(35) / 285 = 125(35) / T2
Temperature T2 = 237.5 K
what sort of fitness component would dance be
categorized under
Answer:
aerobic fitness
Explanation:
i just looked it up lol
An empty glass does not dip in water in upside down position why
Answer:
An empty glass does not dip in water in upside down position because of air cavity present in it which doesnot let water enter the glass when kept it in upside down position
What's the equation for impulse? (physics)
Answer:
F • t = m • Δ v
Explanation:
Pick the correct word to fill up the blank in below question: magnetic
field, atmospheric layers, gravitational pull, attraction force.
A rocket ship going from Earth to the moon must leave the___ ___ of Earth due to its mass.
Check it
The force which acts vertically downward and tends to opposite vertical upward motion of objects. Hence, the rocket ship must leave the gravitational pull of the earth due to its mass.
The magnetic field of the earth refers to the region of space around a magnet. Hence, the magnetic field of the earth has no effect on the rocket. The gravitational pull of the earth will tend to pull the rocket ship downwards until it escapes the gravitational field of the earth.Therefore, the rocket ship must leave the gravitational pull of the earth due to its mass.
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A pinball launcher is a spring with spring constant k = 65.0 N/m. It is compressed a distance of 8.00 cm and a ball of mass 0.100 kg is placed in front of it. When the spring is released, the ball rolls up the incline of the pinball machine. Assuming that it does not hit anything and that no energy is lost to friction, what vertical height does the ball gain before coming momentarily to rest?
Answer:
The maximum height reached by the ball is 0.212 meters (21.2 centimeters).
Explanation:
In this case, the ball receives a potential energy from deformed spring and reaches its maximum height at the expense of such energy. By Principle of Energy Conservation, we define the phenomenon on the ball by the following model:
[tex]U_{k,1}+U_{g,1} = U_{k,2}+U_{g,2}[/tex] (1)
Where:
[tex]U_{k,1}[/tex], [tex]U_{k,2}[/tex] - Initial and final elastic potential energies, measured in joules.
[tex]U_{g,1}[/tex], [tex]U_{g,2}[/tex] - Initial and final gravitational potential energies, measured in joules.
By definitions of elastic and gravitational potential energies, we expand and simplify the equation above as follows:
[tex]\frac{1}{2}\cdot k\cdot x^{2} = m\cdot g \cdot \Delta y[/tex] (2)
Where:
[tex]m[/tex] - Mass of the ball, measured in kilograms.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second. .
[tex]\Delta y[/tex] - Height reached by the ball, measured in meters.
[tex]k[/tex] - Spring constant, measured in newtons per meter.
[tex]x[/tex] - Spring deformation, measured in meters.
If we know that [tex]k = 65\,\frac{N}{m}[/tex], [tex]x = 0.08\,m[/tex], [tex]m = 0.1\,kg[/tex] and [tex]g = 9.807\,\frac{m}{s^{2}}[/tex], then the maximum height reached by the ball is:
[tex]\Delta y = \frac{k\cdot x^{2}}{2\cdot m\cdot g}[/tex] (2)
[tex]\Delta y = \frac{\left(65\,\frac{N}{m} \right)\cdot \left(0.08\,m\right)^{2}}{2\cdot (0.1\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}[/tex]
[tex]\Delta y = 0.212\,m[/tex]
The maximum height reached by the ball is 0.212 meters (21.2 centimeters).
A Ford F-150 truck is driving on a dirt road and a deer steps out in front of the truck. The truck is moving at 22 m/s and stops in 4.5s. What is the rate of acceleration of the truck?
Answer:
4.8
Explanation:
Class-coork
utop
so
7) Describe the force board experiment to show how
to obtain the resultant of two non - paraurt
in coplomay forces acting at a points,
SWITHGEB Gas gustinoq ajo doo DB SPA
ja 2 su napun
citon Ko X to taptive or
YX
Answer:X = hor = 4 + (-5) = -1N.
Y = ver = 10 + (-6)
R = sqrt(x^2+y^2) = sqrt(1+16) = 4.12
tanA = Y / X = 4 / -1 = -4,
A = -76 deg, CW = 180-76 = 104 deg =
Explanation:
How do you think each firefighting method affects the chemical reaction involved in wildfires
Answer:
I think it effects it by how the fire being a chemical reaction since it has gas in it, it effects it by how the water pputs it out, and it stopping the chemical reactions
Explanation:
What is net force?
A. When an object moves
B. The sum of all forces actingon an object
C. The force of gravity on anobject
D. A calculation to find work PLEASE HELP!!
Answer:
B
Explanation:
An airplane is attempting to drop relief supplies to a village. If the plane is flying at an altitude of 500m and a speed of 110 m/s, how far ahead of the drop zone does he need to release the pallet?'
Answer:
1111 m
Explanation:
The following data were obtained from the question:
Height (h) = 500 m
Horizontal velocity (u) = 110 m/s
Horizontal distance (s) =?
Next we shall determine the time taken for the pallet to get to the target. This can be obtained as follow:
Height (h) = 500 m
Acceleration due to gravity (g) = 9.8 m/s²
Time (t) =?
h = ½gt²
500 = ½ × 9.8 × t²
500 = 4.9 × t²
Divide both side by 4.9
t² = 500/4.9
Take the square root of both side.
t = √(500/4.9)
t = 10.1 s
Finally, we shall determine how far the pallet needs to be dropped in order to get to the target. This can be obtained as follow:
Horizontal velocity (u) = 110 m/s
Time (t) = 10.1 s
Horizontal distance (s) =?
s = ut
s = 110 × 10.1
s = 1111 m
Thus, the pallet must be dropped at a distance of 1111 m from the plane in order to get the target.
Deperate need of HELP! MARKING BRAINLIEST
Answer:
yes, what's your question. l will help if I can.
Una fuerza 600 N se aplica el piston pequeño de una prensa hidraulica cuyo diametro es 6 cm ¿Cual debera ser el diametro del piston grande prar que pueda levantar una carga de 350 kg?
Responder:
0.15 m
Explicación:
Paso uno:
dado
Fuerza F = 600N
diámetro d1- 6cm am = 0.06m
A1 = πd1 ^ 2/4 = 3.142 * 0.06 ^ 2/4
= 0,002 m ^ 2
Carga L = 350 kg a newton = 350 * 10 = 3500N
A2 =?
Segundo paso:
sabemos que la presión aplicada a un extremo para levantar una carga en el otro extremo se expresa matemáticamente como
F1 / A1 = F2 / A
sustituir
600 / 0.002 = 3500 / A
cruzar multiplicar
A2 = 0.002 * 3500/600
A2 = 9.89 / 600
A2 = 0.02
sabemos que área = πd ^ 2/4
0.02 = πd2 ^ 2/4
0.02 = 3.142 * d2 ^ 2/4
0.02 * 4 / 3.142 = d2 ^ 2
0.025 = d ^ 2
d = √0.025
d = 0,15 m
el diámetro debe ser de 0.15 m