Explanation:
During the day the sky looks blue because it's the blue light that gets scattered the most. It's redirected into many different directions all over the sky, whereas the other wavelengths aren't scattered as much. Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. White light is composed of seven light and among them, blue light scatters the most as the wavelength of the blue light is comparable to the size of particles in the atmosphere. So, the sky appears blue. Hence, the sky appears blue because the fine particles in the atmosphere scatter light of shorter wavelengths! :D
How do sports play a role in American Culture? Is this different from how sports play a role in other cultures?
PLEASE ANSWER QUICKLY!!!
Answer: American sports culture has a much greater appreciation of and emphasis towards collegiate and high school sports. This may be the strongest difference between American sports culture and every other countries' sports culture.
In space, are fires possible without oxygen? If so how would it happen?
Answer:
no
Explanation:
it just doesn't work that way, try to search the fire pyramid on G. O. O. G. L. E. and you'll see why
An eccentric inventor attempts to levitate by first placing a large negative charge on himself and then putting a large positive charge on the ceiling of his workshop. Instead, while attempting to place a large negative charge on himself, his clothes fly off. Explain.
Answer:
shirt is little attached to the body, it can come off and fly away
Explanation:
In electrostatics, charges of different signs attract and charges of the same sign repel.
In this case, when a negative charge is placed on it, both the inventor and the shirt are charged, therefore there is a repulsive force, also there is an attraction between the positive charge of the roof attracts the negative charge, such as the shirt. of weak the two forces not greater than the resistance of the walk.
As the shirt is little attached to the body, it can come off and fly away
Blank is the time rate of change in velocity
Acceleration is the time rate of change in velocity.
Acceleration = Rate of change of velocity
If the speed of the wave along the rope is 3.2 m/s. Calculate the frequency of the wave
Answer:
2Hz
Explanation:
Find the diagram attached
Using the formula;
v = fλ
v is the velocity
f is the frequency
λ is the wavelength
Given the following
v = 3.2m/s
λ = 4.8/3 = 1.6m
Get the frequency
f = v/λ
f = 3.2/1.6
f = 2Hertz
Hence the frequency of the wave is 2Hz
The frequency of the wave is equal to 2.0 Hertz.
Given the following data:
Speed of wave = 3.2 m/s. Distance = 4.8 meters.To calculate the frequency of the wave:
How to calculate frequency.First of all, we would determine the wavelength of the wave in the image attached below:
Note: Wavelength is the successive distance between two (2) crests.
[tex]Wavelength = \frac{distance}{3} \\\\Wavelength = \frac{4.8}{3}[/tex]
Wavelength = 1.6 meter.
Mathematically, frequency is given by this formula:
[tex]Frequency = \frac{velocity}{wavelength} \\\\[/tex]
Substituting the given parameters into the formula, we have;
[tex]Frequency = \frac{3.2}{1.6}[/tex]
Frequency = 2.0 Hertz.
Read more on frequency here: https://brainly.com/question/25699025
What is the name for forces that act on an object and cancel each other out causing the object to be at rest?
Answer:
If an object is at rest, then the forces acting on both sides are equal and there is resultant force is 0.
is the Matter is made up of motionless particles.
Answer:
All matter is made up of atoms.
An engine has an imput of 100 j and gives out 27 j of useful kenetic energy what is the efficiency of the engine
Answer:
Based on what we have learned so far, in what ways have the experiences of Asian-Canadians stayed the same over time? Why do you think these similarities exist? Please give specific examples to support your ideas.
Explanation:
What is the capacitance of a capacitor that has 7.9 x 107 C of charge and a potential
difference of 12.0 V?
Answer:
6.58×10⁶ F
Explanation:
Applying,
Q = CV..................... Equation 1
Where Q = charge of the capacitor, C = Capacitance of the capacitor, V = Volatage
Make C the subject of the equation
C = Q/V................. Equation 2
From the question,
Given: Q = 7.9×10⁷ C, V = 12.0 V
Susbtitute these values into equation 2
C = 7.9×10⁷/12
C = 6.58×10⁶ F
38. Joey set a school record for running the 200 m race. He completed the distance in
20.6s. What was his average speed?
Answer:
9.7 miles per second
Explanation:
divide 200 by 20.6
A spring extends by 10cm when a mass of 100g is attached to it. What is the spring constant?
Answer:
10N/m
Explanation:
Using F=kx
F=mg
k=mg/x
k=0.1*10/0.1 (kg*m/s^2)/m
10N/m
Jeremy is pushing his two children on a set of swings. He gives his daughter a push and she swings
Jeremy gives his son the same push, but he only swings about two feet high. What could account f
the kids got?
Jeremy's daughter has more mass, so it takes less force to get her into the air.
Jeremy's son has more mass, so it would take more force to reach the same height as his da
O
Jeremy's son has less mass, so it would take more force to reach the same height as his da
O
Jeremy's daughter has more mass, so she accelerates faster than his son.
Round off the following numbers to three significant digits:
43.659
Answer: 43.7
Explanation: Simply round the number so that there are only three digits in the number.
We have that 43.659 rounded to three significant digits is
[tex]43.659=43.7[/tex]
From the Question we are Given
Integer=43.659
To round off to three significant digits means to represent only three digits
Therefore
43.659 in three digits is
[tex]43.659=43.7[/tex]
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If 175 kJ of heat caused a chunk of ice at 0°C to melt to liquid water at 0°C, how many moles were in the ice? How many grams of ice? (Note: molar mass of ice/water is 18.02 g/mol)
Answer is 29.1 mol or 525 g
Explanation:
Pls explain the nature of the image formed by the pin-hole camera
Answer:
→Inverted image ( upside down )
→Real image ( because it is formed on the screen )
→Magified image ( image size is greater than object size)
. What is the mass of an object if it is pulled by a 5 Newton force and it accelerates at a rate of 20 m/s/s?
Please help ASAP
F = ma
so, we can write it as;
= 5 = m × 20
= 5/20 = m
= 1/4 = m
= 0.25 kg = m
[tex]what \: is \: light \: {?} [/tex]
Light is a form of electromagnetic radiation with a wavelength which can be detected by the human eye. It is a small part of the electromagnetic spectrum and radiation given off by stars like the sun. Animals can also see light. The study of light, known as optics, is an important research area in modern physics.
Answer:
Light is a form of energy which produces the sensation of sight .hope it is helpful to you
what happens to the piece of plastic?
Answer:
it reheated and use form another
Block A of 5 kg with a speed of 3 m/s collides with block B of 10 kg that is stationary. After the collision, block B travels with a speed of 2 m/s
Answer:
-1m/s
Explanation:
We can calculate the speed of block A after collision
According to collision theory:
MaVa+MbVb = MaVa+MbVb (after collision)
Substitute the given values
5(3)+10(0) = 5Va+10(2)
15+0 = 5Va + 20
5Va = 15-20
5Va = -5
Va = -5/5
Va = -1m/s
Hence the velocity of ball A after collision is -1m/s
Note that the velocity of block B is zero before collision since it is stationary
- What will be the field strength from a 1.25* 10^-3 when measured 0.4m from the charge?
Answer:
Explanation:
I'm assuming your charge is in Coulombs so I will proceed that way. The formula for this electric field problem is
[tex]E=\frac{kQ}{r^2}[/tex] where k = 9.0 × 10⁹. Filling in:
[tex]E=\frac{(9.0*10^9)(1.25*10^{-3})}{.4^2}[/tex] gives us an electric field value of
7.0 × 10⁷ N/C
What is the force weight of a jaguar who jumps 3 meters to a tree branch with 2670 J of work?
Answer:
[tex]we \: know \: energy \: = \: force \: \times distance \\ e = f \times d \\ so \: f \: = \frac{e}{d} \\ so \: th \: force \: here \: = (\frac{2670}{3}) newton \\ = 890newton[/tex]
Hope it helps
PLEASE HELP!!! I have an electromagnet. If I detach the two wires from the battery and reattach them to the opposite terminals, how would that change the current and magnetic field?
Explanation:
hope it helps thanks
pls mark me as brainliest
Explain how a truss bridge is so stable.
Answer:
Truss bridge, bridge with its load-bearing structures composed of a series of wooden or metal triangles, known as trusses. Given that a triangle cannot be distorted by stress, a truss gives a stable form capable of supporting considerable external loads over a large span.
Explanation:
Load-bearing capacity of truss bridges is huge due to the structure of interconnecting triangles. The structure effectively manages both compression and tension by spreading the load from the roadway throughout its intricate structure
Look at the diagrams. Each model the arrangement of particles in a substance.
Which diagram is the best model for a solid?
Substance A
Substance B
Substance C
Answer:
a
Explanation:
because it has compact molecules
The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?
[tex] \orange{\underline{\huge{\bold{\textit{\green{\bf{QUESTION}}}}}}}[/tex]
The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?
[tex]{\bold{\blue{GIVEN}}}[/tex]
REFRACTIVE INDEX = 1.3
APPARENT DEPTH = 7.7 cm
[tex]{ \bold{\green{To \: Find}}}[/tex]
REAL DEPTH OF THE OBJECT.
[tex]{\red{FORMULA \: \: USED }}[/tex]
[tex]Reflective \: Index = \frac{Real \: Depth}{Apparent \: Depth } [/tex]
[tex] \huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}[/tex]
Refractive Index = 1.3
Apparent Depth = 7.7 cm
Putting the values in the formula:-
[tex]Reflective \: Index = \frac{Real \: Depth}{Apparent \: Depth } \\ \\ 1.3 = \frac{Real \: Depth}{7.7 \: cm} \\ \\ 1.3 \times 7.7 = Real \: Depth \\ \\ 10.01 \: \: cm = Real \: Depth[/tex]
The energy stored by any pair of positive charges is inversely proportional to the distance between them, and directly proportional to their charges. Three identical point charges start at the vertices of an equilateral triangle, and this configuration stores 15 Joules of energy. How much more energy, in Joules, would be stored if one of these charges was moved to the midpoint of the opposite side
Answer:
U = 25 J
Explanation:
The energy in a set of charges is given by
U = [tex]k \sum \frac{q_i}{r_i}[/tex]
in this case we have three charges of equal magnitude
q = q₁ = q₂ = q₃
with the configuration of an equilateral triangle all distances are worth
d = a
U = k ( [tex]\frac{q_1q_2}{ r_1_2 } + \frac{q_1q_3}{r_1_3} + \frac{q_2q_3}{r_2_3}[/tex] )
we substitute
15 = k q² (3 / a)
k q² /a = 5
For the second configuration a load is moved to the measured point of the other two
d₁₃ = a
The distance to charge 2 that is at the midpoint of the other two is
d₁₂ = d₂₃ = a / 2
U = k (\frac{q_1q_2}{ r_1_2 } + \frac{q_1q_3}{r_1_3} + \frac{q_2q_3}{r_2_3})
U = k q² ( [tex]\frac{2}{a} + \frac{1}{a} + \frac{2}{a}[/tex] )
U = (kq² /a) 5
substituting
U = 5 5
U = 25 J
Explain why a smart meter monitors the amount of electrical energy being used as well as the time at which it is being used.
Answer:
Smart Meters measure both the amount of electrical energy used and the time at which it is being used because they are used to monitor the energy consumption at real time, such that the time of use of energy can be monitored, thereby enabling several utility functions for load sharing and maintenance, including;
i) Time of use tariffs, where energy is billed based on peak and off peak periods, which increases profits to the producer, reduces cost for some consumers, encourages more even hourly and daily usage of electricity, lower maintenance cost, lower capital expenditure for peak stations, and reduces carbon emission
ii) Guarantees more accurate energy consumption measurement and billing
iii) Accurate crew dispatch to fault locations
iv) Prevent fraud due to tampering with meter
v) Increase customer confidence in billing
Explanation:
Tenemos un Cable de cobre de 1 km de longitud cuya sección es de 2 milímetros al cuadrado y queremos saber la resistencia que señalara el ohmetro , su temperatura es de 20°
Answer:
8.5 Ω
Explanation:
La resistencia de un material es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.
La fórmula de la resistencia (R) viene dada por:
R = ρL/A
Donde ρ es la resistividad del material, L es la longitud del material y A es el área de la sección transversal del material.
Dado que:
L = 1 km = 1000 m, A = 2 mm² = 2 * 10⁻⁶ m², ρ (cobre) = 1.7 * 10⁻⁸ Ωm
Sustituyendo da:
R = 1,7 * 10⁻⁸ * 1000/2 * 10⁻⁶
R = 8.5 Ω
What the effect positively charged objects and negatively charged objects have on each other
Answer:
often Positive and negative charges balance each other which gives an overall neutral charge. if they are unbalanced then it will result in static electricity.
10. Inertia causes your books on the car seat to continue moving forward even after you brake. TrueFalse 11. Tires with little or no tread do not have good traction on a wet, snowy, or icy road. TrueFalse 12. When driving on ice and snow, traction is poorest when the temperature is near 32 degrees F. TrueFalse 13. The more energy of motion that a car has, the less time and distance it will take to stop. TrueFalse 14. To help slow a car using engine braking, just take your foot off the accelerator. TrueFalse
10. True
11. True
12. True
13. False
14. False
Hope this helps!!
