If the mirror is immersed in water whose index of refraction is 1.33 , No change in its focal distance . focal distance of mirrors does not depend on the external medium in which the mirror is immersed.
What happens when a mirror is immersed in water?As the focal length of the convex mirror does not depend on the factor such as the refractive index of any medium. Hence even after the convex mirror is immersed in water, the focal distance remains unchanged. Hence the facility of the convex mirror also remains same.
How is focal distance related to refractive index?Since from lens makers formula we will observe that focal length of lens is inversely proportional to refractive index of medium of lens . Hence net index of refraction of lens decreases when it is dipped in a denser medium than air, hence focal distance increases.
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How does the Coriolis effect impact the Gulf Stream and the Brazil Current?
Answer: The Coriolis effect results in bending the direction of surface currents to the right in the Northern Hemisphere and left in the Southern Hemisphere. The Coriolis effect causes winds and currents to form the circular patterns. The direction in which they spin depends upon the hemisphere in which they are present.Coriolis Effect is named after the French mathematician and physicist Gaspard-Gustave de Coriolis. It affects the weather patterns of an area, it affects the ocean currents, and it also affects air quality.
please can some tell me what the units are for :
power
energy
resistance
current
potential difference
Answer:
ohm
Explanation:
A sound wave has a frequency of 1.5 Hz while traveling at a speed of 50 m/s. What is the wavelength?
Answer:
33.3m
Explanation:
Recall that for a regular wave, the relationship between, wavelength, frequency and velocity (speed) is given by :
v = fλ,
where:
v = velocity (speed) of the wave = 50m/s
f = frequency of the wave = 1.5 Hz
λ = wavelength (we are asked to find this)
simply substitute the given values into the equation:
v = fλ
50 = 1.5 λ,
λ = 50/1.5
λ = 33.3m
Please Help!!!!
A helicopter flies with an airspeed of 42.5 m/s [W]. If the wind is traveling with a velocity of 25.0 m/s [E30°S] relative to the ground then determine the velocity of the helicopter relative to the ground.
a) Use the data from the question to determine the velocity components for the helicopter’s speed relative to the air and the wind’s speed relative to the ground.
b) Use your velocity components from part (a) and determine the resultant velocity for each component. (In other words, determine the resultant horizontal component for the helicopter’s ground speed and the resultant vertical component for the helicopter’s ground speed).
c) Using your data, determine the resultant velocity of the helicopter relative to the ground.
Answer:
a) The vertical component of the helicopters speed relative to the air = 0 m/s
The horizontal component of the helicopters speed relative to the air = -42.5 m/s
The vertical component of the wind speed relative to the ground = -21.65 m/s
The horizontal component of the wind speed relative to the ground = 12.5 m/s
b) The x-component of the helicopter speed relative to the wind speed = -30 m/s
The y-component of the helicopter speed relative to the wind speed = -12.5 m/s
c) The resultant speed of the helicopter relative to the ground is 32.5 m/s in the direction of W 22.6° S
Explanation:
The speed of the helicopter = 42.5 m/s
The direction of flight of the helicopter = West
The wind speed = 25.0 m/s
The direction of the wind = E30°S
a) The velocity components of the helicopters speed relative to the air are;
Vertical component = 0 m/s
Horizontal component = -42.5 m/s
The velocity components of the wind speed relative to the ground are;
Vertical component = -25 × cos(30) = -21.65 m/s
Horizontal component = 25 × sin(30) = 12.5 m/s
b) To find the speed of the helicopter relative to the wind we have;
x-component of the helicopter speed = -42.5 m/s
y-component of the helicopter speed = -0
x-component of the wind speed relative to the ground = 25×sin(30) = 12.5 m/s
y-component of the wind speed relative to the ground = -25×cos(30) = -21.65 m/s
Therefore, the x-component of the helicopter speed relative to the wind speed = -42.5 + 12.5= -30 m/s
the y-component of the helicopter speed relative to the wind speed = 0 + (-12.5) = -12.5 m/s
c) The resultant speed of the helicopter relative to the ground is given by the relation;
\(v_{h, ground} =\sqrt{(v_{h,horizontal})^2 + (v_{h,vertical})^2}\)
= √((-30)² + (-12.5)²) =32.5 m/s
The direction of motion from the x-axis is given as follows;
\(tan(x) = \dfrac{Vertical \ velocity \ component}{Horizontal \ velocity \ component} = \dfrac{-12.5}{-30} = \dfrac{5}{12}\)
\(x = tan^{-1} \left (\dfrac{5}{12} \right ) = 22.62 ^{\circ}\)
Therefore, the helicopter is flying at 32.5 m/s in the direction of W 22.6° S.
can someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
Point number 3.
Explanation:
Volcanism can be studied to found out evidence of the internal structure of the Earth.
Answer:
Volcanism
Explanation:
Volcanism refers to study about the creation of volcanos.We know the earth's inner side is filled of magma which gets out through volcanos.So volcanism should be learntA vector points 12.0 units along the x-axis, and 9.00 units along the y-axis.
Find the direction of the vector.
Answer:
15 units NE
Explanation:
Assuming the coordinate plane is a compass with N being the positive y-axis, we can use the Pythagorean theorem to find the magnitude of the vector. Since the vector is going up by 12 and right by 9 at the same time, it should form a diagonal line, aka the hypotenuse of a triangle. This triangle has both of its leg units as 12, and 9. Pythagorean theorem states that a^2 + b^2 = c^2, that is both of their legs squared is the hypotenuse of the triangle squared. 12^2 + 9^2 = c^2. c = 15. Now that we know the magnitude, let's go back to the quadrants as the compass. Since both units are positive, the vector goes in the positive direction on both sides, which is Quadrant 1. North and East would be the appropriate say for the vector's direction, thus the vector's direction will be 15 units North East.
How deep under the surface of a lake would the pressure be double that at the surface? (1 atm = 1.01 x 105 pa)
At depth of h = 10.31 m the surface of a lake would the pressure be double that at the surface
Liquid pressure is the increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it.
We calculate liquid pressure using the equation liquid pressure = density x acceleration due to g x depth in fluid.
At the surface of the lake , pressure Po is = 1.01 * \(10^{5}\) Pa
to find = depth under the surface of a lake would the pressure be double that at the surface
Pressure under the surface will be = 2 * 1.01 * \(10^{5}\) Pa = 2.02 * \(10^{5}\) Pa
Pressure under the surface = Po + ( rho * g * h )
2.02 * \(10^{5}\) = 1.01 * \(10^{5}\) + (1000 * 9.8 * h)
1.01 * \(10^{5}\) = 1000 * 9.8 * h
h = 10.31 m
At depth of h = 10.31 m the surface of a lake would the pressure be double that at the surface
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Please help me quickly
The inner planets have a smaller diameter than the outer planets.
True
False
Answer:true
Explanation:
Calculate the angular separation θ1 at which two point sources of wavelength 600 nanometers are just resolved when viewed through a circular aperture of diameter 1.5 centimeters. Express your answer in radians to three significant figures.
4.88×10⁻⁵rad is the angular separation θ1 at which two point sources of wavelength 600 nanometers are just resolved when viewed through a circular aperture of diameter 1.5 centimeters.
What is angular separation?The angle between two sightlines or between two point objects as seen by an observer is known as angular distance (also called as angular separation, apparent distance, and apparent separation).
All of the natural sciences and mathematics make use of angular distance, particularly geometry and trigonometry. It appears with angular velocity, angular acceleration and torque in the classical mechanics of spinning objects.
The angular separation is calculated as given below.
θ =1.220 ×λ/d
= 1.220 ×600×10⁻⁹/1.5×10⁻²
=4.88×10⁻⁵rad
Therefore, the angular separation is 4.88×10⁻⁵rad.
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A neutron star is the collapsed core of a dead star. It has 3.29 x 10^30 kg of mass in a radius of only 10800 m. What is the acceleration of gravity on its surface?
Answer:
1.88 x 10^12
Explanation:
I'm in Acellus and just got the question right
PLS HELP I WILL MARK YOU AS A BRAINLEIST
Take water in a test tube and add a few drops of blue litmus to it. With the help of a
straw blow air into the solution. It turns red. Explain the reason of colour change.
Answer:
A Chemical Reaction towards Oxygen, Water, and the Chemical Color.
A Reichardt detector uses motion-opponent processing to
a) detect movement among lights in its receptive field
b) eliminate responses to steadily presented lights
c) code a particular direction of motion and the opposite direction using excitation and inhibition, respectively
d) more than one of the above is true
Reichardt detectors use motion-opponent processing to detect movement among lights in its receptive field. The correct option is (a) detect movement among lights in its receptive field.
The Reichardt detector is a neural system that is responsible for motion detection. It's made up of two photoreceptor cells that are placed next to each other. It's also known as the elementary motion detector (EMD). The concept of motion detection is based on the idea of apparent movement.In the Reichardt detector, a photoreceptor cell receives an image and sends a signal to a second photoreceptor cell that is next to it. The second photoreceptor cell is a delayed signal. When the signal from the first photoreceptor cell arrives, the two signals are compared. When the signals are aligned, it results in a signal that detects movement in a particular direction. This is known as motion-opponent processing.
Motion-opponent processing is a type of sensory processing in which neural circuits respond in opposite directions to various aspects of the sensory stimulus. This is used by the brain to detect motion. In motion-opponent processing, coding a particular direction of motion and the opposite direction using excitation and inhibition is also involved. It means that the Reichardt detector uses motion-opponent processing to detect movement among lights in its receptive field.
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If I traveled 30 miles in 1 hour, then 20 miles in 1 hour, and 50 miles in 3
hours, what is my average speed?
Answer:
The answer is 20 miles/hr
Explanation:
Elements in the same______
are more chemically similar.
THIS IS URGENT!!!!
Answer:
group
Explanation:
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1. ¿Cuál es el actor clave de del exceso de peso corporal?
El factor mas importante para el exceso de peso es un exceso de energía creada por una alimentación excesiva
El peso de un cuerpo es definido por la relación entre la energía requerida para los procesos vitales del cuerpo, sus actividades físicas diarias y la energía suministra en forma de alimentos.
Cuando estos dos parámetros están en balance el peso es estable. Cuando la cantidad de alimentos aumenta o el valor energético de los mismo aumenta se tiene un exceso de energía que el cuerpo almacena en forma de grasa corporal, este el el factor mas importante para el exceso de peso.
En conclusión el factor mas importante para el exceso de peso es un exceso de energía por una alimentación excesiva
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URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
The diagram below shows a
portion of the electromagnetic
spectrum. Which of the
following statements correctly
explains the relationship
between FM and AM radio
waves?
Answer:
It's C
Explanation:
The reason why is since AM is longer as shown in the diagram it's either A or C, and since longer wavelengths have less energy it's C.
Solve the rational equation:
5x/x+2 = 3x/x+1
Answer:
x = 1/2
Explanation:
5x/x + 2 = 3x/x + 1
do cross multiplication
(x + 2) * 3x = (x + 1) * 5x
3x^2 + 6x = 5x^2 + 5x
6x - 5x = 5x^2 - 3x^2
x = 2x^2
x/x^2 = 2
1/x = 2
1 = 2x
1/2 = x
(1) The arm of a crane at a construction site is
20.0 m long, and it makes an angle of 12.7◦
with the horizontal. Assume that the maximum load the crane can handle is limited
by the amount of torque the load produces
around the base of the arm.
What maximum torque can the crane withstand if the maximum load the crane can
handle is 890 N?
Answer in units of N · m.
(2) What is the maximum load for this crane at
an angle of 39.8◦ with the horizontal?
Answer in units of N.
The maximum load will be in the opposite direction and the magnitude will be 1746.5 Newtons.
What is Torque?Torque is a twisting force that speaks to the engine's rotational force and measures how much of that twisting force is available when an engine exerts itself.
F = 890 N
Torque = F × d
where, F is the force,
d is the distance travelled by the object.
Torque = 890 × 20
Torque = 17800 Nm
The torque is perpendicular to component of the force times the distance, will have:
Torque = (Fcos 12.7°) × 20
Torque = 890 × 0.9910 × 20
Torque = 17639.8 Nm
The maximum load for this crane at an angle of 39.8° with the horizontal will be:
Torque = F cos39.8 × 20
17639.8 = F × -0.505 × 20
F = 17639.8 / (20× -0.505)
F = -17639.8/ 10.1
F = -1746.5 N
The maximum load will be in the opposite direction and the magnitude will be 1746.5 Newtons.
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In your opinion what qualities of a teacher can help students learn better?
Answer:
→They are the followings :
The teacher should be friendly in nature. Treating the students like her/his friends. The teacher should be of it's class generation i.e. that not old teacher.The teacher should be cheerful.The teacher should be creative.This are some points that teacher should have mentally.
What does ADA apply to?
suppose that the beam reflects off the tumor and emerges from the liver at a distance 13.0 cm from its entry point. calculate the depth of the tumor (in cm) below the surface of the liver.
Based on this information, we can use the formula for the path length of a beam of light traveling through a medium with a varying index of refraction to calculate the total path length through the tumor, and thus the depth of the tumor.
To calculate the depth of the tumor below the surface of the liver, we need to use the formula for the path length of a beam of light traveling through a medium with a varying index of refraction. This formula is given by:
Path length = ∫n(x) dx
Where n(x) is the index of refraction of the medium at position x, and the integral is taken along the path of the beam. In this case, the beam enters the liver and reflects off the tumor, so we can break up the path into two segments: one through the liver before the reflection, and one through the tumor after the reflection.
Let's assume that the index of refraction of the liver is approximately constant, and that the tumor has a higher index of refraction due to its density. Then we can write:
Path length = ∫n_liver(x) dx + ∫n_tumor(x) dx
Where n_liver(x) is the index of refraction of the liver, and n_tumor(x) is the index of refraction of the tumor. We can also assume that the path length through the liver before the reflection is simply the distance traveled by the beam, which is 13.0 cm. Thus:
Path length = 13.0 cm + ∫n_tumor(x) dx
To calculate the integral, we need to know the profile of the index of refraction in the tumor. This will depend on the size and shape of the tumor, as well as its composition. Without more information, we cannot provide an exact answer to this question. However, we can make some general statements about how the depth of the tumor might affect the path length.
If the tumor is small and located near the surface of the liver, the path length through the tumor will be relatively short, and the depth of the tumor will be small. Conversely, if the tumor is large or located deep within the liver, the path length through the tumor will be longer, and the depth of the tumor will be greater.
In summary, to calculate the depth of the tumor below the surface of the liver, we need to know the profile of the index of refraction in the tumor, which will depend on its size, shape, and composition. Based on this information, we can use the formula for the path length of a beam of light traveling through a medium with a varying index of refraction to calculate the total path length through the tumor, and thus the depth of the tumor.
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A 1 kg puck sliding on a horizontal shuffleboard court is slowed to rest by 1 point
a frictional force of 3 N. What is the coefficient of kinetic friction between
the puck and the surface of the shuffleboard court? *
O A. 0.25
O B.0.5
O c.0.15
D. .31
Answer:
miu = 0.31
Explanation:
The friction force is defined as the product of the normal force by the coefficient of friction.
\(f=miu*N\)
where:
f = friction force = 3 [N]
miu = friction coefficient
N = normal force [N]
The normal force on a horizontal surface can be calculated by means of the product of mass by gravity.
where:
m = mass = 1 [kg]
g = gravity acceleration = 9.81 [m/s²]
\(N=m*g\\N=1*9.81\)
\(N= 9,81 [N]\)
Now replacing in the equation above, we can find the friction coefficient.
\(miu=3/9.81\\miu = 0.31\)
Imagine you are making a Greek salad with cucumbers, tomatoes, olives, feta, and lettuce. What kind of cut would you use for each of these ingredients? Why?
To prepare a Greek salad, different types of cut must be used to cut these ingredients depending on the ingredient.
In culinary there are different types of cuts depending on the cooking or the presentation that you want to give the dish. For example, in the case of Greek salad, all the ingredients are required to be cut in such a way that the bites are suitable for the size of the mouth.
Therefore, the cutting technique for each ingredient is:
Cucumbers - Julienne (thin and long strips)Tomatoes - Brunoise or chopped (small squares)Olives - chopped (split in half)Feta cheese - Brunoise or minced (small squares)Lettuce - Chiffonade (flat and elongated strips)the Greek salad looks like the image below:
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4. A racing car has a uniform acceleration of 4 m s - '2. What distance will it cover in 10 s after start?
Answer:
200 m
Explanation:
Initial velocity- 0
final velocity= v
time= 10 seconds
to find final velocity
v= u + at
v= 0 + 4*10
v= 0 + 40
v= 40 m/s
to find distance
s= ut + 1/2at²
s= 0*10 + 1/2*4*(10)²
s= 1/2 *4*100
s=200m
answer : 200 m
the separation of the earth into layers was the result of the: question 4 options: decrease in temperature downward toward the core. differing densities of the rock and mineral materials. gravitational force created by the rotating earth. initial collection of materials and their position in earth. presence of water at earth's surface.
The separation of the Earth into layers was the result of differing densities of the rock and mineral materials.
This process occurred over time, as the heavier materials sank to the center and the lighter materials rose to the surface. The Earth is made up of several layers, each with its own unique characteristics. The innermost layer is the core, which is made up of mostly iron and nickel. Surrounding the core is the mantle, which is made up of silicate rocks and minerals. The outermost layer is the crust, which is the thinnest layer and is composed of solid rock.
The separation of these layers was a result of the differing densities of the rock and mineral materials. When the Earth was first formed, it was a molten ball of rock and metal. As the Earth cooled, the heavier materials sank towards the center while the lighter materials rose towards the surface. This process is known as differentiation, and it led to the formation of the Earth's distinct layers.
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the electrical operating conditions are typically measured with a(n):
The electrical operating conditions are typically measured with Multimeter, Oscilloscope, and Clamp Meter. Thus, option D is the accurate answer.
A multimeter is the most common and versatile instrument which is used to measure the voltage, resistance, and current passing through the conductors. IT can able to provide continuous frequency. An Oscilloscope is also a device used to measure electrical waveforms
A clamp Meter is a small handheld device that can able to measure both AC and DC currents in the circuit in digital format. It uses a small induction coil to measure the amount of current passing through the conductor.
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The complete question is:
the electrical operating conditions are typically measured with a(n):
a. Multimeter
b. Oscilloscope
c. Clamp Meter
d. All the above
If a nonzero net force is acting on an object, then the object is definitely _____.
a. at rest
b. being accelerated
c. moving with a constant velocity
d. losing mass.
An object is definitely being accelerated when a nonzero net force is acting on it: Option B.
A net force refer to the vector sum of all the forces that are acting on an object or physical body. Thus, a net force is a single force that substitutes the effect of all the forces acting on an object or physical body.
According to Newton's Second Law of Motion, the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.
This ultimately implies that, an object is definitely being accelerated when a nonzero net force is acting on it.
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A person can jump out of an airplane at 5000 feet, without a parachute, AND land on the ground safely (without any injury), IF they can manage to do what physics trick?
Lengthen the moment/time of impact
Bend knees right before impact
Spread out arms and legs to slow down
Shorten the length/time of impact
Answer:
Momentum is equal to mass for velocity (p1=mv)
But momentum is also equal to Force for time of impact (p1=Ft). Hence the impact force is inversely proportional to the fall time and directly proportional to the mass and fall velocity : F=mv/t^2 or F=p1/t
If he slows down, v diminishes and F diminishes
Hence correct Answer is C
Hello I need help
A= N=
Answer:
+3 in Atom, +9 in Nucleus
Explanation:
Charge of atom:
Neutrons are neutral in charge therefore ignore those for this portion,
there are 9 protons (+) and 6 electrons (-).
9 - 6 = +3 charge in atom
Charge of nucleus:
Neutrons are neutral as said before, there are 9 protons (+) and 6 neutrons (0).
9 + 0 = +9 charge in atom