how light recats with each of diffrent types of space and materials
Answers
Answer:
Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. This is called specular reflection.
Related Questions
When developing an experiment design, which could a scientist take to improve the quality of the results?
Answers
The options missing are;
A. Make only a few changes to the manipulated variable.
B. Identify any biases about the answer to the scientific question.
C. Include as many details as possible when writing the conclusion.
D. Share her ideas through peer review.
Answer:
B. Identify any biases about the answer to the scientific question.
Explanation:
Since the question is asking what can be done to improve the quality of the results, it means what can the scientist do to make sure that the result answers the question properly and has little or no biases.
Thus, looking at the options, the only one that comes close to actually improving on the quality of the results before finalizing is option B where the scientist is to identify any biases.
A 6,900 kg freight truck accelerates from 3 m/s to 47 m/s in 8.1 s by applying a constant force. How much force was applied to the truck?
Work Out And Use Units Please
Answers
Approximately, 37,481.5 Newtons of force was applied to the truck.
What is a force?A force is a push or pull on an object with mass causes it to change its velocity. Force is an external agent capable of changing a body's state of rest or motion. It has a magnitude and a direction, so it is a vector quantity.
Mathematically, Force = mass x acceleration
but \(a=\frac{v-u}{t}\)
so, \(F = m\frac{v-u}{t}\)
\(F = 6900\frac{47-3}{8.1}\)
F = 6900(5.4)
F = 37,481.5N
In conclusion, the force applied to the freight truck was 37,481.5N.
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Consider the circled elements in the periodic table. Based on their location, we could infer that most of them are
A) very reactive gases.
B) gases at room temperature.
C) do not react readily with metals.
D) nonreactive solids at room temperature.
Answers
Based on the circled elements in the periodic table’s location, we could infer that most of the circled elements are gases at room temperature. The correct answer is B.
What elements are gasses at room temperature?There are 11 elements that are in gaseous state at room temperature. They are Hydrogen (H), Helium (He), Neon (N), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), Fluorine (F), Chlorine (Cl), Nitrogen (N) and Oxygen (O).
Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and also are found as diatomic molecules (H2, N2, O2, F2, Cl2).
Although part of your question is missing, you might be referring to this full question: Consider the circled elements in the periodic table as seen on attached image. Based on their location, we could infer that most of them are:
A) very reactive gases.
B) gases at room temperature.
C) do not react readily with metals.
D) nonreactive solids at room temperature.
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A student sees a commercial that claims a new dishwasher is energy efficient.
Compared to less efficient dishwashers, this dishwasher is most likely to -
Answers
Answer:
ENERGY STAR-certified dishwashers
Explanation:
use advanced technology to get dishes clean while using less water and energy. Soil sensors test the degree of dirt on dishes throughout the wash and adjust the cycle to achieve optimum cleaning with minimal water and energy use.
ENERGY STAR Most Efficient 2021 Dishwashers
Miele. G 6880 SCVi. Type. Standard. ...
Miele. G 6875 SCVi. Type. Standard. ...
Miele. G 6875 SCVi SF. Type. Standard. ...
Miele. G 6885 SCVi. Type. Standard. ...
Miele. G 6835 SCi. Type. Standard. ...
Miele. G 6935 SCi. Type. Standard. ...
Miele. G 6987 SCVi. Type. Standard. ...
Miele. G 4780 SCVi. Type. Standard.
Energy-Saving “No-Heat” Dry
Most new dishwashers offer an energy-saving no-heat drying feature. At the end of the rinse cycle, if the feature is selected, room air is circulated through the dishwasher by fans, rather than using an electric heating element to bake the dishes dry.
Best Dishwashers
Best Overall: Bosch 300 Series Dishwasher.
Best High-End Dishwasher: Bosch 800 Series Dishwasher.
Best Cleaning Performance for the Price: GE GDP665SYNFS Dishwasher.
Best Feature Set and Design: KitchenAid KDPM604KPS Dishwasher.
Best Budget Dishwasher: Maytag MDB7959SKZ Dishwasher.
Which of the following conditions should be met to make a process perfectly reversible?
Check all that apply.
(1) Any mechanical interactions taking place in the process should be frictionless.
(2) Any thermal interactions taking place in the process should occur across infinitesimal temperature or pressure gradients.
(3) The system should not be close to equilibrium.
Answers
1) Any mechanical interactions taking place in the process should be frictionless, to make a process perfectly reversible
What is mechanical interactions?
Mechanical interactions are physical forces that are used to affect the behavior of objects and materials. This can include contact forces such as friction, tension, and compression, as well as non-contact forces such as gravity, magnetism, and electric fields
Mechanical interactions can be used to cause objects to move, change shape, or experience a change in energy. These interactions can also be used to create, store, or transfer energy. Mechanical interactions are studied by engineers and scientists in multiple disciplines, and are used in many different applications, including the design of machinery, medical devices, and consumer products.
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Which of the following is not a component of soil? a. Organic material b. Minerals c. Gases d. None of the above Please select the best answer from the choices provided A B C D.
Answers
Answer:
It's D: None of the above.
Explanation:
I looked up the components of soil and all of them were, and I also took the test and got it correct.
The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity.
The pickup trick has a changing velocity
Because the pickup truck is __________.
Answers
Answer: its slowing down
Explanation:
The car is slowing down because its on the corner of the track.
If it were to go the same speed the other cars are going while on the straight part of the track it would go off the track therefore the car must slow down to stay in the race
The pickup truck has a changing velocity as it is slowing down. This is because the truck is on the corner of the truck.
What is the reason for changing velocity?
An object can change its velocity in a number of different ways as it can slow down, it can speed up, or it can change its direction of motion. A change in the speed, or a change in the direction of motion, or a change in both the speed and direction of motion of the object means that the object has an overall change in velocity.
The pickup truck is slowing down because it is on the corner of the track. If it were to go on with the same speed as the other cars are going in the direction while on the straight path of the track it would go off the track and therefore the car must slow down to stay in the race of vehicles.
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(a)
Explain, in terms of the momentum of molecules, how the gas in the balloon exerts
a pressure.
Answers
Explanation: The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. The more particles that hit the walls, the higher the pressure.
hope it helps
When you do somersaults, you'll more easily rotate when your body is (a) straight with both arms above your head. (b) straight with both arms at your sides. (c) curled into a ball shape. (d) no difference
Answers
When doing somersaults, you'll more easily rotate when your body is (c) curled into a ball shape. This is because of the conservation of angular momentum. Angular momentum depends on two factors: the moment of inertia and the angular velocity.
By curling your body into a ball shape, you decrease the moment of inertia, which is a measure of how spread out the mass is in an object. When the moment of inertia is reduced, the angular momentum remains constant.
By decreasing the moment of inertia, you effectively concentrate the mass closer to the axis of rotation, making it easier to rotate. In contrast, when your body is straight with both arms above your head or at your sides, the moment of inertia is larger, requiring more effort to initiate and maintain the rotation. Curling into a ball shape reduces the moment of inertia, facilitating faster and easier rotation during somersaults.
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La resistencia de un termómetro de platino es de 6Ω a30°C. Hallar su valor correspondiente a 100°C,sabiendo que el coeficiente de temperatura de resistividad del platino vale 0,00392°C^(-1).
Answers
Respuesta:
7,6 Ω
Explicación:
Paso 1: Información dada
Resistencia a 30 °C (R₀): 6 ΩCoeficiente de temperatura (α): 0,00392 °C⁻¹Paso 2: Hallar la resistencia (R) a 100 °C
Podemos ver la relación entre la resistencia de un material y la temperatura usando la siguiente ecuación.
R = R₀ (1 + α × ΔT)
R = 6 Ω (1 + 0,00392 °C⁻¹ × (100 °C - 30 °C)) = 7,6 Ω
A proton is accelerated to one-tenth the velocity of light, and this velocity can be measured with a precision of 1%. What is the uncertainty in the position of this proton
Answers
The uncertainty in the position of the proton is 1.1 x 10⁻¹³ m.
Velocity of the protonThe velocity of the proton is calculated as follows;
\(v = \frac{1}{10} \times 3\times 10^8 \ m/s = 3 \times 10^7 \ m/s\)
precision of the velocity, Δv = 0.01 x 3 x 10⁷ = 3 x 10⁵ m/s
Uncertainty in the position of the protonThe uncertainty in the position of the proton is calculated as follows;
\(\Delta xm\Delta v= \frac{h}{4\pi} \\\\\Delta x = \frac{h}{4\pi m\Delta v} \\\\\Delta x = \frac{6.67 \times 10^{-34} }{4\pi \times 1.67 \times 10^{-27} \times 3\times 10^5} \\\\\Delta x = 1.1 \times 10^{-13} \ m\)
Thus, the uncertainty in the position of the proton is 1.1 x 10⁻¹³ m.
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Imagine you inherit a farm and now have to purchase fertilizer for the farm. The farm is 340 acres and had corn planted the previous year. You must add fertilizer to the soil before you plant this year's crop. You go to the local fertilizer store and find SuperPhosphate-brand fertilizer. You read the fertilizer bag and can recognize from your high school chemistry class a molecular formula C*a_{3}*P_{2}*H_{14}*S_{2}*O_{21} (you don't understand anything else written on the bag because it is imported fertilizer from Japan). You must decide how much fertilizer to buy for application to your cornfields. If each bag contains 25 kg of fertilizer and costs $54.73, how many bags of fertilizer must you purchase, and how much will it cost you to add the necessary fertilizer to your fields ?
Answers
Total Cost is = $107,380 if The farm is 340 acres and had corn planted add fertilizer to the soil before you plant this years' crop.
What is called fertilizer?A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".
Why is fertilizer important?Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.
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The frequency of a sound wave corresponds to its
Answers
Hahah
What is the velocity of a 16.3 kg car moving with 85 J of energy?
Answers
Answer:
Velocity is 10.429 m/s
Explanation:
Assume a car is moving from rest at point A to point B through a distance r.
We know that workdone is product of force and distance moved;
\({ \bf{ \triangle w = f \triangle r}} \)
- Integrating both sides;
\( { \bf{ \int \triangle w = f \int^{r_{2}}_{r_{1} } \triangle r}} \\ \\ { \bf{w = (ma) \{r _{2} - r _{1} \}}} \\ \\ { \bf{w = (m \times \frac{ {v}^{2} }{2r}) \times (r) }}\)
The step above comes from Newton's third law, where initial velocity is zero, since car is from rest, and r1 is zero
\({ \bf{w = (m \times \frac{ {v}^{2} }{2}) \times \frac{r}{r} }} \\ \\ { \boxed{ \rm{workdone = \frac{1}{2}m {v}^{2} }}}\)
Therefore;
\({ \rm{85 = \frac{1}{2} \times 16.3 \times {v}^{2} }} \\ \\ { \rm{ {v}^{2} = \frac{2 \times 85}{16.3} }} \\ \\ { \rm{v = \sqrt{( \frac{2 \times 85}{16.3} } )}} \\ \\ { \rm{v = 10.429 \: ms {}^{ - 1} }}\)
why is ultrasound monitoring of fetuses similar to mapping the seabed
Answers
Answer:
Ultrasound monitoring of fetuses and mapping the seabed are similar in that they both use sonar technology to create images.
Explanation:
Ultrasound monitoring uses high-frequency sound waves to create images of the developing fetus inside the womb. The sound waves are sent out by a transducer and are reflected back to create an image of the fetus, similar to how sonar sends out sound waves and receives the echoes to create an image of the seabed.
Mapping the seabed uses sonar technology to create images of the seafloor. Sound waves are sent out by a transducer and are reflected back by the seafloor, creating an image of the seabed. The time it takes for the sound waves to return is used to determine the depth of the seafloor.
Both ultrasound monitoring and mapping the seabed use the principle of echolocation, which is the ability to locate objects by reflecting sound waves off them and measuring the time it takes for the echoes to return.
In summary, both ultrasound monitoring and mapping the seabed use sonar technology to create images by sending out sound waves and receiving echoes, which is the principle of echolocation.
Explanation:
both are actually using the principle of sonar basically involves sound waves ,bouncing doing waves and measuring effectively the echoes mm hmm for ultrasound well.
A 2,500 kg plane accelerates from rest at a rate of 86.8 m/s². Find the net force acting on the plane.
Answers
F = 217,000 N
Explanation:
We can use Newton's second law of motion,
which states that the net force acting on an object is equal to the product of its mass and acceleration:
F = m * a
where F is the net force in Newtons (N), m is the mass in kilograms (kg), and a is the acceleration in meters per second squared (m/s²).
Substituting the given values into this equation, we get:
F = 2500 kg * 86.8 m/s²
F = 217,000 N
Therefore, the net force acting on the plane is 217,000 Newtons.
A Train moves from rest to a speed of 25m/s in the 30s. What is the acceleration?
Answers
To find the acceleration of the train, we can use the equation:
acceleration (a) = (final velocity (v) - initial velocity (u)) / time (t)
Given:
Initial velocity (u) = 0 m/s (train starts from rest)
Final velocity (v) = 25 m/s
Time (t) = 30 s
Using the formula, we can calculate the acceleration:
acceleration (a) = (25 m/s - 0 m/s) / 30 s
Simplifying:
acceleration (a) = 25 m/s / 30 s
acceleration (a) = 0.833 m/s²
Therefore, the acceleration of the train is approximately 0.833 m/s².
what two energies does a bulldozer use
Answers
3. Your glasses are dropped from the Grand Canyon. Find the distance after 4.5 seconds.
A-44.1 m
S-99.25 m
D- 4.13 m
A-198.45 m
Answers
The distance after 4.5 seconds is
101.275 m.How to find the distanceThe distance a falling object travels can be calculated using the equation:
distance = initial velocity x time + (1/2) x acceleration x time^2
Since the object was dropped, its initial velocity is zero, and the acceleration due to gravity is approximately 9.8 m/s^2.
Plugging in the values:
distance = 0 x 4.5 + (1/2) x 9.8 x 4.5^2
distance = 0 + (1/2) x 9.8 x 20.25
distance = 101.275 m
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A 4357-kg roller coaster car starts from rest at the top of a 36.5-m high track. Determine the speed of the car at the top of a loop that is 10.8 m high.
Answers
Answer:17.24 m/s
Explanation:
What is the name of a hypothesis that has passed the test of many experiments and has support of other scientists
Answers
Answer: Scientific Hypothesis
Explanation: A scientific hypothesis is something supported or approved by a line of scientists through experiments and close observations.
What most directly determines an object's state of matter? (Please help)
A. the shape and texture of the object
B. the location of the object on Earth
C. the size of the particles in the object
D. the amount of motion and energy that the object's particles have
Answers
Answer:
I would say D
Explanation:
because the amount of energy in molecules of matter determines the state of matter
(if I'm wrong I'm sorry)
Which system is used for transporting molecules to the cells?
Answers
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion
Explanation:
Identity ten devices that use cells or batteries. What types of cells or batteries are used in each device? Are the cells or batteries used the best choice?
Answers
Ten devices that use batteries are: smartphones, laptops, flashlights, digital cameras, portable speakers, electric toothbrushes , remote controls, electric shavers, handheld game consoles, and electronic toys
What are the batteries?
Here are ten devices that use cells or batteries:
Smartphones - most smartphones use rechargeable lithium-ion batteries.Laptops - laptops use rechargeable lithium-ion batteriesDigital cameras - digital cameras use rechargeable lithium-ion batteries or disposable alkaline batteriesElectric toothbrushes - electric toothbrushes typically use rechargeable nickel-metal hydride (NiMH) batteriesFlashlights - flashlights often use disposable alkaline batteries, although some models use rechargeable lithium-ion batteriesRemote controls - remote controls typically use disposable alkaline batteriesPortable speakers - portable speakers usually use rechargeable lithium-ion batteriesCalculators - calculators often use button cell batteries, such as the CR2032 lithium batteryWatches - watches use a variety of batteries, including button cell batteries like the SR626SW silver oxide battery or the CR2032 lithium batteryToys - many toys use disposable alkaline batteriesWhether or not the cells or batteries used in these devices are the best choice depends on various factors such as the device's power requirements, energy efficiency, cost, and environmental impact.
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What is the speed (mi/min) of a helicopter that traveled 1200 miles in 420 mins?
Answers
The distanve travelled is d=1200 miles
Time taken is t=420 miles.
The velocity is
\(v=\frac{1200}{420}=2.85\text{ miles/min}\)The velocity is 2.85 miles/min
How is the volume of a rectangular room measured?
Answers
Room will be a cuboid .
Hence
\(\\ \sf\longmapsto Volume=LBH\)
\(\\ \sf\longmapsto Volume=Length\times Breadth\times Height\)
How far is 1 light-year away?
Answers
A light-year is a unit of distance used in astronomy, One light-year is approximately equal to 9.461 x 10^12 kilometers (5.878 x 10^12 miles).
A light-year is a unit of measurement used to express astronomical distances. It is the distance that light travels in one year in a vacuum. The speed of light is approximately 299,792,458 meters per second (or about 186,282 miles per second), so in one year (which is about 31.69 million seconds), light can travel about 9.461 trillion kilometers (about 5.878 trillion miles). So, one light-year is equal to 9.461 trillion kilometers or 5.878 trillion miles.
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What is the speed of a cheetah that travels 176.4 meters in 4.5 seconds?
Answers
Answer:
\( \boxed{ \bold{ \boxed{ \sf{39.2 \: m/ {s} \: }}}}\)
Explanation:
Given,
Distance travelled ( d ) = 176.4 meters
Time taken ( t ) = 4.5 seconds
Finding the speed of a cheetah
Speed \( \sf{ = \frac{distance \: travelled}{time \: taken} }\)
\( \sf{ = \frac{176.4}{4.5} }\)
\( \sf{ = 39.2 \: m/ {s} \: }\)
------------------------------------------------------------------------
Let's learn about Speed :
Suppose a body moves 20 m in 2 seconds, either on a curved path or on a straight path. So , 10 m is the distance travelled by the body in each second which can be written as 10 m/s. This is called speed of the body. Thus, Speed is defined as the distance travelled per unit time. It is the rate of distance travelled by a body.
Mathematically,
\( \boxed{ \bold{ \sf{speed = \frac{distance \: travelled}{time \: taken} }}}\)
In SI system, the unit of distance is metre and time is second. Thus , the SI unit is speed is m/s.
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Which of the following is true about the total distance traveled by an object from time t= a to time t=b where v(t) represents the velocity of the object as a function of time? Both total distance traveled is given by [vat and total distance (2 cannot be calculated. O B Total distance traveled is given by ¡r(tldt 2 ° C. Total distance cannot be calculated. O D. Total distance traveled is given by v()ldt AND total distance traveled is found by accumulation of all the velocity-time over the interval [a, b O E. Total distance traveled is found by accumulation of all the velocity time over the interval [a, b]
Answers
The distance traveled by the object between two points in time a and b can be calculated by integrating the velocity function over the interval [a, b] as shown below: distance traveled from t = a to t = b = ∫[a,b] v(t) dt This means that the total distance traveled by an object from time t = a to time t = b where v(t) represents the velocity of the object as a function of time is found by the accumulation of all the velocity-time over the interval [a, b].
When v(t) represents the velocity of an object as a function of time, the total distance traveled by the object from time t= a to time t=b is found by accumulation of all the velocity-time over the interval [a, b]. This implies that the correct option is D. Total distance traveled is given by v(t)ldt AND total distance traveled is found by the accumulation of all the velocity-time over the interval [a, b].Explanation:The distance (d) an object travels in a given time (t) is calculated as:d = v × twhere v represents the velocity of the object as a function of time.Therefore, the distance traveled by the object between two points in time a and b can be calculated by integrating the velocity function over the interval [a, b] as shown below:distance traveled from t = a to t = b = ∫[a,b] v(t) dtThis means that the total distance traveled by an object from time t = a to time t = b where v(t) represents the velocity of the object as a function of time is found by accumulation of all the velocity-time over the interval [a, b].
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When a 6 Ω resistor is connected across the terminals of a 3 V battery, the number of coulombs passing through the resistor per second is
Answers
Answer:
Given that - R = 6 ohm
V = 3 volt
n = ?
so by ohms law , V = I X R
I = V \ R = 3 \ 6 = 0.5 A
we know that I = Q / T here t is 1 sec
Q = I X T = 0.5 X 1 = 0.5 C
By the law of quantization ,
Q = n x e
n = Q / e = 0.5 / 1.6 x 10 ^-19
n = 0.3125 x 10^19
hoped so u got the answer mark me as brainellist :)
Answer:
0.5/1.6×10^-19
Explanation:
formula for current is v
I R
3/6=0.5
charge if found by the product of current and time which is one second
0.5×1 =0.5
deficiency of n=no of charges×charge of electrons
0.5/1.6×10^-19