i need help with this too:( if u found out the answer lmk
If the refractive index of water is 1.33, then its critical angle is...
A compound microscope that has an eyepiece lens with a magnification of 10X and an objective lens with a magnification of 25X will have a total magnification of __________ times.
Answer:
35
Explanation:
total magnification = eyepiece lens x objective lens
TM = 10X x 25X
TM = 250X
A car is driving at constant velocity down the interstate. The engine provides an acceleration of
4.95 m/s2 to the car that has a mass of 1.11 kg. What is the force acting on the car?
Do not enter negative signs, two decimal places.
The force acting on the car is 5.49 Newton.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity. It has a direction and a magnitude.
Given that: acceleration of the car: a = 4.95 m/s^2.
Mass of car: m = 1.11 kg.
the force acting on it = ma
= 4.95 × 1.11 Newton
= 5.49 Newton.
Hence, the force acting on it is 5.49 Newton.
Learn more about force here:
https://brainly.com/question/13191643
#SPJ1
what is the rms value of an ac voltage that has a 480 v peak?
The RMS value of an AC voltage is the effective or average value of the voltage over time. It is calculated by dividing the peak voltage by the square root of 2. In this case, if the AC voltage has a peak of 480 V, the RMS value can be calculated as follows:
RMS Voltage = Peak Voltage / sqrt(2)
RMS Voltage = 480 V / 1.414
RMS Voltage = 339.4 V
Therefore, the RMS value of an AC voltage that has a peak of 480 V is 339.4 V. It is important to note that the RMS value is the most useful value in AC circuits as it determines the power delivered to a load.
To know more about RMS visit:
brainly.com/question/12896215
#SPJ11
A proton with kinetic energy T=10 MeV flies past a stationary free electron at a distance b=10 pm. Find the energy acquired by the electron, assuming the proton's trajectory to be rectilinear and the electron to be practically motionless as the proton flies by.
A proton with kinetic energy T=10 MeV flies past a stationary free electron at a distance b=10 pm. The energy acquired by the electron is 286 eV, assuming the proton's trajectory to be rectilinear and the electron to be practically motionless as the proton flies by.
To find the energy acquired by the electron, we can use the concept of Coulomb scattering. In this process, the proton and the electron interact via the electrostatic force, which transfers energy from the proton to the electron.
The maximum energy transferred to the electron (ΔE) can be found using the following formula:
ΔE = (2 * k * q1 * q2) / b
where k is the Coulomb constant (approximately 8.99 × 10^9 N m^2 C^−2), q1 and q2 are the charges of the proton and electron (1.6 × 10^-19 C each), and b is the impact parameter (10 pm or 10 × 10^-12 m).
Plugging the values into the formula, we get:
ΔE = (2 * 8.99 × 10^9 N m^2 C^−2 * (1.6 × 10^-19 C)^2) / (10 × 10^-12 m)
ΔE ≈ 4.58 × 10^-17 J
Now, to convert the energy into electron volts (eV), we can use the following conversion:
1 eV = 1.6 × 10^-19 J
ΔE ≈ (4.58 × 10^-17 J) / (1.6 × 10^-19 J/eV) ≈ 286 eV
So, the energy acquired by the electron is approximately 286 eV. This value is much smaller than the initial kinetic energy of the proton (10 MeV), confirming the assumption that the electron is practically motionless as the proton flies by.
For more such questions on Kinetic energy.
https://brainly.com/question/15372275#
#SPJ11
all of the below contribute to an increase in carbon levels except......
All of the below contribute to an increase in carbon levels except D. Photosynthesis.
Carbon is an essential component of life on earth, and its role is crucial in maintaining the balance in the atmosphere. However, increased carbon levels, mainly carbon dioxide (CO₂), pose a threat to our planet and all the living beings on it. Burning fossil fuels, deforestation, and industrial processes are the major contributors to the increased levels of CO₂ in the atmosphere. Hence, humans play a significant role in climate change. However, the process of photosynthesis can reduce the carbon levels in the atmosphere as it involves absorbing CO₂ from the air and converting it into oxygen (O₂) and glucose.
Breathing is the process where humans and animals take in oxygen and release CO₂ into the atmosphere. Although breathing increases the levels of CO₂ in the atmosphere, it is not considered a significant contributor to the increased carbon levels. Decay of vegetation contributes to the increase in carbon levels as it releases CO₂ into the atmosphere during the process. Petrol burning releases CO₂ into the atmosphere and contributes significantly to climate change. Therefore, the correct answer to this question is option D, photosynthesis
Learn more about photosynthesis at:
https://brainly.com/question/29775046
#SPJ11
WILL AWARD BRAINLIEST AND STARS FOR WHOEVER ANSWERS THIS
Answer: The table that would organize and summarize the class data on pH levels of the different soil types is found in the attachment below.
Explanation: As an A+ student, I love to help people on brainly in my free time! If this answer helped you, please click the heart, click the crown to give brainliest and give a 5 star rating! I'd appreciate it if you did at least one of those <3 Have a great day.
What are some examples of why parallel circuits are good for everyday life?
Explanation:
Parallel circuits are used in wiring almost everything in buildings. You use them to turn on the lights in a room, Use a blow dryer, or plug anything into an outlet
need some help please.
Answer:
The x - component of vector B is determined as -18.3 m.
What is x-component of a vector?
The x-component or horizontal component of a vector is the value of the vector acting or pointing x direction or in a horizontal direction.
The x-component or horizontal component of a vector on a given plane calculated as follows;
Bx = B cos(θ)
where;
B is the magnitude of the vectorθ is the angle of inclination of the vectorThe given parameters include the following;
the angle of inclination of the vector from the horizontal direction, θ = 170⁰the magnitude of vector B = 18.6 mSubstitute the given parameters into the above equation and for the x-component of vector b.
Bx = 18.6 x cos(170)
Bx = -18.3 m
Thus, from the magnitude of vector B in the image, the value of vector B in x - direction is -18.3 m.
pls brainliest
PLEASE HELP NOW. WILL GIVE BRAINLIEST AND 25 PTS
(Only If You Answer Properly)
An enormous amount of electricity is created at power-generating stations and sent across the country through wires that carry high voltages. Appliances, power lines, airport and military radars, substations, transformers, computers, and other equipment that carries or uses electricity all generate electromagnetic fields. Many questions have been raised about how electromagnetic fields affect our bodies. Do they pose a public health risk? Perform an Internet search to find information about the effects of electromagnetic fields on public health. Then, discuss the pros and cons of using equipment that produces an electromagnetic field
The human person and electromagnetic fields both have their benefits and drawbacks. They do present a threat to public health. Power plants produce a tremendous amount of electricity.
How do magnetic fields work?When an electrically charged object moves through space, it receives a magnetic force in the magnetic field. The coil becomes magnetised when current passes through the circuit. A straight wire's magnetic field in an electrical circuit is weaker than a coiled wire's magnetic field.
Power plants produce a tremendous amount of electricity, which is then sent across the nation on high-voltage cables. Electromagnetic fields are produced by appliances, power lines, radars used by the military and airports, substations, transformers, computers, and other electrically powered machinery. Scientists have shown that our well-being is actually influenced by the earth's electromagnetic climate. Since there are so many objects in our daily lives that produce electromagnetic fields, it is challenging to avoid them.
Learn more about the Electromagnetic field.
brainly.com/question/14848188#
#SPJ4
What is a rumor wave ?
Answer:
Following are the answer to this question:
Explanation:
The wave is propagating at the incident wave which focuses on the stretchy and rotational inertia features of the whole medium via a material system. For both the mechanical waves there are many two basic types of incident waves: quality management program and transverse waves.
The rumor is also known as the "Norman Rockwell", in which the environment of some of the greatest physics attempts of our time, it pays to remain suspicious when remarkable reports of historical findings are made on social media.
A dog chases a skateboarder travelling at 10.4\,\dfrac{\text{m}}{\text{s}}10.4 sm 10, point, 4, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction. The skateboarder speeds up with a constant acceleration for 39\,\text{m}39m39, start text, m, end text over 3.3\,\text{s}3.3s3, point, 3, start text, s, end text. We want to find the acceleration of the skateboarder over the 3.3\,\text{s}3.3s3, point, 3, start text, s, end text time interval
Answer:Δx=v0t + 1/2 at 2
In a skateboard race, the winner covered 26 meters in 3.88 seconds . What was his speed?
Why do some materials conduct electricity better than others? How can electrical conductivity be used to distinguish between metals and nonmetals?
For the conduction of electricity, free electrons are required.
Those materials having free electrons conduct electricity.
Metals are usually good conductors of electricity while non-metals are poor conductors of electricity.
Thus, in this way electrical conductivity can be used to distinguish between metals and nonmetals.
Two people, Micah and Lyra, with different near points are equally close to an object. Both inspect the object through the same magnifier by holding the lens close to the eye. Micah's near point is located farther away from his eye than Lyra's near point is located relative to her eye. Micah will experience a larger magnification for which of the following reasons?
When the object is located at his near point, the angular size of the object is smaller for Micah than for Lyra.
Micah sees a larger image than Lyra sees.
Micah can see the image clearly from a larger distance than Lyra can.
Lyra can see the image clearly from a larger distance than Micah can.
The angular size of the image relative to the angular size of the object at the near point is greater for Micah than for Lyra.
Micah will experience a larger magnification is because the angular size of the object is smaller for Micah than for Lyra.
Why angular size of the object is smaller for Micah than for Lyra?
The magnification produced by a magnifier is given by the formula:
M = (25cm/f) + 1, where f is the focal length of the magnifier.
The magnification is larger when the focal length is smaller. However, in this case, both Micah and Lyra are using the same magnifier, so the focal length is the same for both of them.
The near point is the closest distance at which an object can be brought into focus by the eye. The near point varies from person to person, and it depends on the elasticity of the lens and the shape of the eye. In this case, Micah's near point is located farther away from his eye than Lyra's near point is located relative to her eye. This means that Micah's eye has less ability to focus on close objects than Lyra's eye.
When an object is located at the near point, the image formed on the retina is at its maximum size.
The angular size of the object is given by the formula:
θ = tan⁻¹ (s/d), where s is the size of the object and d is the distance between the object and the eye.
Since Micah's near point is farther away than Lyra's near point, the distance d is larger for Micah. This means that the angular size of the object is smaller for Micah than for Lyra.
When Micah uses the magnifier to inspect the object, the magnification will be larger because the angular size of the object is smaller.
This is because the magnification is proportional to the ratio of the angular size of the image to the angular size of the object.
Since the angular size of the object is smaller for Micah, the angular size of the image produced by the magnifier will be larger, resulting in a larger magnification for Micah.
Therefore, the correct reason why Micah will experience a larger magnification is because the angular size of the object is smaller for Micah than for Lyra when the object is located at his near point.
Learn more about magnification
brainly.com/question/21370207
#SPJ11
When the object is located at his near point, the angular size of the object is smaller for Micah than for Lyra, for which reason Micah will experience a larger magnification.
The statement that is correct for the given question is "When the object is located at his near point, the angular size of the object is smaller for Micah than for Lyra."
Micah and Lyra are two people with different near points but are equally close to an object.
Both inspect the object through the same magnifier by holding the lens close to the eye. In this context, magnification is the ratio of the size of the image seen through the magnifier to the size of the object when viewed directly.
The distance between the object and the lens must be greater than the focal length of the lens to create a virtual image. Micah's near point is located farther away from his eye than Lyra's near point is located relative to her eye.
So, Micah will experience a larger magnification for the reason that when the object is located at his near point, the angular size of the object is smaller for Micah than for Lyra.
To know more about magnification here:
https://brainly.com/question/21370207
#SPJ11
Which color has the lowest frequency?
a proton is very far from the wire. what is the ratio ff/fi of the electric force on the proton after the segment is shrunk to the force before the segment was shrunk?
The ratio of the electric force on the proton (Ff/Fi) after the segment is shrunk to the force before the segment was shrunk is determined by the geometry of the wire.
When the segment is shrunk, the electric force on the proton decreases, as the proton is further from the wire. The ratio of the electric force on the proton after the wire is shrunk to the force before the wire was shrunk is given by the equation Ff/Fi = (l1/l2)^2, where l1 is the length of the wire before shrinking and l2 is the length of the wire after shrinking.
Learn more about The ratio of the electric:
https://brainly.com/question/14565257
#SPJ4
A force of F= 45 N is used to drag a crate 3 m across a floor.
ANSWER:
(a) 108 J
(b) 0 J
(c) 108 J
STEP-BY-STEP EXPLANATION:
(a)
Express the relation between horizontal component of work done and force on the crate:
\(W_h=F_h\cdot d\)Here Wh is the horizontal component of the work done on the crate and Fh is the horizontal component of force and d is the distance of the crate across the floor.
Replacing:
\(\begin{gathered} W_h=36\cdot3 \\ W_h=108\text{ J} \end{gathered}\)(b)
Express the relation between vertical component of work done and force on the crate:
\(W_v=F_v\cdot d\)Here Wv is the vertical component of the work done on the crate and Fv is the vertical component of force and d is the distance of the crate across the floor.
Replacing:
\(\begin{gathered} W_h=27\cdot0 \\ W_h=0\text{ J} \end{gathered}\)(c)
Express the relation for total work done by the 45 N force:
\(\begin{gathered} W_{\text{total}}=W_h+W_v \\ \text{ replacing} \\ W_{\text{total}}=108+0 \\ W_{\text{total}}=108\text{ J} \end{gathered}\)in fig. 5-7, is the magnitude of the normal force fn greater than, less than, or equal to mg if the block and table are in an elevator moving upward (a) at constant speed and (b) at increasing speed?
When the block and table are in an elevator moving upward at a constant speed, the magnitude of the normal force (Fn) is equal to the weight (mg) of the block.
This is because there is no net force acting in the vertical direction, so Fn balances out the weight of the block.
If the elevator is moving upward at an increasing speed, the magnitude of the normal force (Fn) will be greater than the weight (mg) of the block. The additional upward acceleration of the elevator requires an additional upward force to accelerate the block. The normal force must be greater than mg to provide this extra force and maintain equilibrium.
to learn more about equilibrium click here; brainly.com/question/31595593
#SPJ11
This chart shows four atoms, labeled W, X, Y, and Z. These atoms can combine with each other to form molecules.
Which combination of atoms will form a molecule, but not a compound?
W and X
X and Y
W and Z
Y and Z
Answer:
Where is the picture?
All molecules that contain carbon (C) and at least hydrogen (H) atoms is one example until I see what that missing diagram says.
if 0.950 mol of o2 has a volume of 20.0 l at some temperature and pressure, what would be the voume of 1.350 mol of o2
The volume of 1.350 mol of O2 at the same temperature and pressure is 28.4 L.
To solve this problem, we can use the ideal gas law equation, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. We can rearrange the equation to solve for the volume of the second sample of O2:
V = (nRT)/P
Since the temperature and pressure are the same for both samples of O2, we can use the relationship between the volume and the number of moles to find the volume of the second sample:
V1/n1 = V2/n2
Plugging in the given values:
20.0 L/0.950 mol = V2/1.350 mol
Cross-multiplying and solving for V2:
V2 = (20.0 L)(1.350 mol)/(0.950 mol)
V2 = 28.4 L
More ideal gas law questions can be obtained here: https://brainly.com/question/16265367
#SPJ11
Can anyone tell me why my answer is wrong and what is the right one please (only for the second one)
The correct response is D. 700 kilometers.
What is velocity?The pace at which an object changes its position is referred to as its velocity, which is a physical term. Being a vector quantity with both magnitude (speed) and direction, velocity has both.
The displacement of an object divided by the amount of time needed to cover that distance yields the velocity. The term "displacement" describes a shift in an object's location in a certain direction.
How do you determine it?We can apply the following formula to resolve this issue:
Distance = velocity x time
where distance is the length of time the ship travels, velocity is the ship's speed, and time is its travel time.
The ship is moving at a speed of 50 km/h southeast, which is 45 degrees southeast of the east-west axis, according to the information we have about its velocity.
The following calculation can be used to determine how far the ship traveled during a 14-hour period:
Distance= 50 km/hr x 14 hr = 700 km.
The correct response is D. 700 kilometers.
To know more about velocity, visit:
brainly.com/question/30559316
#SPJ1
Which of the following would be appropriate statements for each stage of George Engel's Theory of Grief? Select all that apply. Stage IV: "1 still can't believe she is gone, but I know I have to get on with my life." Stage I: "I am so mad that she's gone, why did God let this happen?" Stage It: "Her funeral will be held next Monday at noon." Stage V: "I feel like I can move on now and she will always be a part of my life." Stage 1: "I just can't believe that she's gone."
The accurate choices for each stage in George Engel's Theory of Grief are provided in the statements corresponding to stage I, stage II and stage V.
George Engel's Theory of Grief identifies five stages commonly experienced in response to loss: Denial, Anger, Bargaining, Depression, and Acceptance. These stages offer insights into the emotional and psychological processes individuals undergo when coping with the profound impact of losing a loved one.
Denial is the initial stage, characterized by difficulty accepting or believing the loss. It involves a sense of disbelief or numbness.
Anger follows, involving intense feelings of anger, resentment, and frustration. Individuals may question the reasons behind the loss and direct their anger towards various targets.
Bargaining is the stage where individuals attempt to negotiate or make deals in hopes of reversing the loss. They may engage in "what if" scenarios or express a willingness to do anything to bring the loved one back.
Depression involves profound sadness, a feeling of emptiness, and a profound sense of loss. Individuals may withdraw, experience changes in appetite or sleep, and struggle with guilt and regret.
Acceptance is the final stage, where individuals come to terms with the reality of the loss and adapt to a new normal. It involves integrating the loss into one's life and finding meaning while honoring the memory of the loved one.
Hence, the accurate choices for each stage in George Engel's Theory of Grief are provided in the statements corresponding to stage I, stage II and stage V. "
Learn more about Theory of Grief at: https://brainly.com/question/12187096
#SPJ11
Question by how much would the answer change if the plane coasted for 2. 0 s before the pilot applied the brakes?
There will be no change in the answer.
The answer to the initial problem would remain the same, as the velocity at the time of braking is the determining factor in calculating the stopping distance, regardless of whether the plane coasted for 2.0 s before the brakes were applied or not. The time it took for the plane to coast would not affect the velocity of the plane or the stopping distance, since coasting is a type of motion with constant velocity. The only factor that would affect the stopping distance is the initial velocity of the plane, which would determine the amount of work required to bring the plane to a stopTo know more about velocity visit:
https://brainly.com/question/25332488
#SPJ4
two difference between hydraulic brake and hydraulic lift
Answer:
hydraulic lift pump moves the lift piston out in a series of movements. and a hydraulic brake moves it out in one short break.
Mechanical waves are caused by the transfer of energy through a medium. T or F
Answer:
T
Explanation:
true, Mechanical waves are waves that transfer energy through material medium
Answer:
True
Explanation:
Mechanical waves are an oscillation of matter that transfers energy through a medium. The oscillation does not cause movement of the matter. The mechanical wave will travel until all the initial amount of energy is transferred. Sound waves and ocean waves are examples of mechanical waves.
Today, astronomers can measure distances directly to worlds like venus, mars, the moon, or the satellites of jupiter by.
Today, astronomers can measure distances directly to worlds like Venus, mars, the moon, or the satellites of Jupiter by bouncing radar beams off them.
The reproduction and display of 3D pictures is another use for parallax. The secret is to take two 2D pictures of the subject from slightly different angles, just like human eyes do, and to show them so that each eye only sees one of the pictures.
For instance, a stereopticon, or stereoscope, a popular gadget from the 19th century, employs parallax to display images in three dimensions. Through a set of lenses, two photographs that have been put next to one another are seen. Each image is captured from a slightly varied angle that nearly resembles the distance between the eyes. The images on the left and right respectively depict what the left and right eyes would see.
To know more about astronomers, visit:
https://brainly.com/question/14853303
#SPJ4
An electron’s position cannot be known precisely. only its probability of being in a certain location can be known. bohr model einstein’s model electron cloud model
An electron’s position cannot be known precisely. only its probability of being in a certain location can be known as c. the electron cloud model.
Electron cloud model was developed in the 1920s by Erwin Schrödinger and Werner Heisenberg, and it is based on the idea that an electron does not have a definite location, but rather exists in a probability distribution around the nucleus of an atom.
In the electron cloud model, the probability of finding an electron in a certain location is represented by a cloud-like shape around the nucleus. The denser the cloud, the greater the probability of finding an electron in that area. This model is different from the Bohr model, which depicts electrons as orbiting the nucleus in fixed, circular paths. The electron cloud model is also different from Einstein's model, which does not specifically address the position of electrons.
In summary, the electron cloud model is the model that describes an electron's position as a probability rather than a precise location. It is different from the Bohr model and Einstein's model, and it is based on the idea that an electron exists in a probability distribution around the nucleus of an atom.
Learn more about electron cloud model at:
https://brainly.com/question/18220861
#SPJ11
Answer:
the electron cloud model.
Explanation:
" Sensation " occurs in the while perception occurs in the 1) brain; body 2) skin; nerves 3 ) brainstem spinal cord 4 ) body brain
Hence the complete statement will be, " Sensation " occurs in the body while perception occurs in the brain.
Option D
Sensation and its resolveGenerally, senses acquire facts from the surroundings using the sensory receptors which eventually feed into neural inputs.
These neural impulses are then dispatched to the brain there it is prepared and interpreted for in addition evaluation which is recognized as perception.
Therefore,we have the follow statements to be true
Sensation occurs in the body
Perception occurs in the brain
Option D
For more information on Mammals
https://brainly.com/question/2422107
When 50 g of a certain material at 100°C is mixed with 100 g of water at 0°C, the final temperature is 40°C. What is the specific heat of the material? The specific heat of water is 1.00 kcal/kg • C°.
we can equate the two quantities of heat to find c: m_water * c_water * ΔT = m_material * c * ΔT, c = (m_water * c_water * ΔT) / (m_material * ΔT)
the above expression yields c = 0.20 kcal/kg * C°.
The formula for calculating the specific heat (c) of a material is:
ΔQ = m * c * ΔT
c = ΔQ / (m * ΔT)
ΔT = 100°C - 40°C = 60°C
m_water = 100 gΔQ = m_water * c_water * ΔT = 100 g * 1.00 kcal/kg * ΔT
m_material = 50 g
ΔT = 40°C - 0°C = 40°C
ΔQ = m_material * c * ΔT
So, we can equate the two quantities of heat to find c:
m_water * c_water * ΔT = m_material * c * ΔT
c = (m_water * c_water * ΔT) / (m_material * ΔT)
the above expression yields temperature c = 0.20 kcal/kg * C°.
How is mixing temperature determined?The first container's mass and temperature are multiplied together, and the result is added to the second container's mass and temperature to determine the mixture's water temperature. Finally, divide that outcome by the combined water masses in each container.
To know more about temperature visit :-
brainly.com/question/7510619
#SPJ1