Answer:
1) Superposition results in adding the two waves together. Constructive interference is when two waves superimpose and the resulting wave has a higher amplitude than the previous waves. Destructive interference is when two waves superimpose and cancel each other out, leading to a lower amplitude.
I'm sorry thats all I can help with
Answer:
Turn off the second drip and then add a barrier with one slit. What do you observe on the right side of the wall? What do you observe on the left side of the wall? From a physics perspective, explain your observations of what is happening on both sides of the barrier.
Explanation:
The speed and amplitude of the waves are affected when hitting the barrier. The two waves reflect off the barrier and they travel in opposite directions.
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2. What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2 . What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
–1.6 × 103 N
–1.63 × 103 N
–2.4 × 103 N
–5.27 × 104 N
The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N
How do I determine the gravitational force?The gravitaional force between two objects can be obtained by using the following formula:
F = GM₁M₂ / r²
Where
F is the gravitaional force G is the gravitational constant M₁ and M₂ are the masses of the objects r is the distance apartThe following data were obtained from he question:
Mass of satellite (M₁) = 5400 = 5.4×10³ KgHeight (h) = 30000 km = 30000 × 1000 = 30000000 mMass of Earth (M₂) = 6.0×10²⁴ KgRadius of Earth (R) = 6400 km = 6400 × 1000 = 6400000 mDistance apart (r) = R + h = 6400000 + 30000000 = 36400000 mGravitational constant (G) = 6.673×10¯¹¹ Nm²/Kg²Gravitational force (F) =?The gravitaional force can be obtained as shown below:
F = GM₁M₂ / r²
F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²
F = 1.63×10³ N
Thus, the gravitational force is 1.63×10³ N
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A container is placed in front of a heat lamp. After a few hours, water droplets begin to form on the container. Which part of of the water
cycle does this best demonstrate?
O A evaporation
OB precipitation
OC transpiration
OD. condensation
PLS HELP FAST
Which element has 1 valence electron in its outer shell and will react with a group 17 element in a 1:1 ratio?
O A. Carbon
O B. Potassium
O C. Beryllium
O D. Aluminum
The element that has 1 valence electron in its outer shell and will react with a group 17 element (also known as a halogen) in a 1:1 ratio is Potassium (K).
The correct answer is option B.
Potassium belongs to Group 1 of the periodic table, also known as the alkali metals. The alkali metals have one valence electron in their outermost shell, making them highly reactive. In the case of Potassium, it has an electron configuration of 2-8-8-1, with the valence electron being in the outermost shell.
Group 17 elements, on the other hand, are known as halogens and have seven valence electrons. They are highly reactive and tend to gain one electron to achieve a stable electron configuration of a noble gas. When reacting with alkali metals, halogens achieve a stable configuration by accepting the alkali metal's single valence electron, forming an ionic compound.
In the case of Potassium, it will react with a group 17 element in a 1:1 ratio. For example, it can react with Chlorine (Cl) to form Potassium Chloride (KCl). Potassium will lose its single valence electron to chlorine, which will gain the electron to form a stable chloride ion.
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a plane flew for 2 hours at 467 mph
Answer: Plane flew 3,614 miles
Explanation: = (2 × 467) + (5 × 536)=3, 614 miles.
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Question 1 (1 point)
What force is needed to accelerate a 10 kg ball from 20 m/s to 70 m/s in 2 seconds?
a
25 Newtons
b
50 Newtons
102 Newtons
u
O O O O
d
250 Newtons
е
1000 Newtons
Answer:
250 N
Explanation:
\(a = \frac{vf - vi}{t} \)
Vf=final velocity
Vi =initial velocity
=70-20/2=25m/s^2
F=ma
=10kg * 25m/s^2
=250N
A tank contains 2 m3 of air at -93°C and a gage pressure Ro6 of 1.4 MPa. Determine the mass of air, in kg. The local atmospheric pressure is 1 atm
To determine the mass of air in the tank, we need to convert the given parameters and apply the ideal gas law. The mass of air in the tank is approximately 5.04 kg.
To determine the mass of air in the tank, we need to consider the ideal gas law and convert the given parameters to appropriate units.
Given:
Volume of air (V) = 2 m³
Temperature (T) = -93°C
Gauge pressure (P) = 1.4 MPa
Local atmospheric pressure (P_atm) = 1 atm
First, let's convert the temperature from Celsius to Kelvin:
T = -93°C + 273.15 = 180.15 K
Next, we need to convert the gauge pressure to absolute pressure by adding the atmospheric pressure:
P_abs = P + P_atm = 1.4 MPa + 1 atm = 2.4 MPa
Now, we can use the ideal gas law equation to calculate the mass of air (m):
PV = nRT
Where:
P = absolute pressure
V = volume
n = number of moles of air
R = ideal gas constant
T = temperature
Rearranging the equation to solve for mass (m):
m = (n * M) / N_A
Where:
M = molar mass of air
N_A = Avogadro's number
To find the number of moles (n), we can use the equation:
n = PV / RT
Given that the molar mass of air is approximately 28.97 g/mol, and the ideal gas constant R is 8.314 J/(mol·K), we can calculate the mass of air.
Calculations:
n = (P_abs * V) / (R * T)
m = (n * M) / N_A
Substituting the values:
n = (2.4 MPa * 2 m³) / (8.314 J/(mol·K) * 180.15 K)
m = (n * 28.97 g/mol) / 6.022 x 10^23 mol⁻¹
Calculating the mass of air (m):
m ≈ 5.04 kg
Therefore, the mass of air in the tank is approximately 5.04 kg.
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Rita is a salon owner. She notices that her salon charged one of her clients, Linda, extra for a service that the clent did not request. What do you think Rita should do? Α. Remaln qulet about the extra money. B. Distribute the money equally among the staff. C. Call the client and Inform her that she was incorrectly charged. D. Try overcharging the next client too and check if it goes unnoticed.
Answer:
C hope it helps
call the client and inform her that she was incorrectly charged.
Answer:
The answer is C. call the client and inform her that she was incorrectky charged
Explanation:
Plz do all of it i will give brainlest and thanks to best answer
plz do it right
Answer: The answer is B: Convection
Explanation: Convection transfers heat through a movement of fluids but in this case its through air hope this helps :)
What is the velocity of a 750 kg object at a height of 0m if it’s ME is 3590J?
Answer:
Sorry for this question
a block sitting on a frictionless surface is attached to a spring of spring constant kk. the other end of the spring is attached to the wall. the equilibrium length of the spring is x 1x 1 . the spring is first compressed to a distance of x 2x 2 , then released and extended to a length of x 3x 3 . the elastic potential energy stored in the spring when it is extended to x 3x 3 can be calculated as:
The elastic potential energy stored in the spring when it is extended to length x3 can be calculated using the formula U = (1/2)k(x3 - x1)².
The elastic potential energy stored in the spring when it is extended to length x3 can be calculated using Hooke's Law and the formula for elastic potential energy.
Hooke's Law states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position. Mathematically, this can be expressed as F = -kx, where F is the force, k is the spring constant, and x is the displacement.
To calculate the elastic potential energy stored in the spring, we can use the formula U = (1/2)kx², where U is the elastic potential energy and x is the displacement.
In this case, the spring is extended to a length of x3, which means the displacement is x3 - x1, where x1 is the equilibrium length. Substituting this into the formula, we get U = (1/2)k(x3 - x1)².
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Ya'll I been thinking...
is cereal really just a type of soup?
Answer:
Your a genius!
Explanation:
How many kg/m3 to g/cm3?
To convert kg/m3 to g/cm3, divide by 1000 because a kilogramme contains 1000 grammes and (100 cm)3 Equals 1 m3. So 1 kg/m3 equals 1/1000 g/cm3.
To convert from kg/m3 to g/cm3, just multiply the value in kg/m3 by 1000. We may use the conversion ratio 1 kg/m3 = 1/1000 g/cm3 to convert density units from kg/m3 to g/cm3. For example, if we have a density of 5 kg/m3, we can convert it to g/cm3 by doing the following: 5 kg/m3 equals 5/1000 g/cm3 = 0.005 g/cm3. Instead, we may convert units using dimensional analysis. We may devise a conversion factor based on the equivalency of 1 kg and 1000 g, as well as 1 m3 and (100 cm)3: 1 kg = 1000 g m³ = (100 cm)³ = 10^6 cm³ Then, we can multiply the density in kg/m³ by the conversion factor, making sure to cancel out the units of kg and m³:
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a 1200-kg cylindrical can buoy floats vertically in salt water. the diameter of the buoy is 0.9 m. calculate the additional distance the buoy will sink when a 80-kg man stands on top
To calculate the additional distance the buoy will sink when a man stands on top, we need to consider the change in buoyancy force and the additional weight added to the system.
The buoyancy force is equal to the weight of the fluid displaced by the buoy. In this case, since the buoy is floating vertically, the buoyancy force is equal to the weight of the buoy itself.
Buoyancy force = Weight of the buoy = Mass of the buoy * Gravitational acceleration
Buoyancy force = 1200 kg * 9.8 m/s^2 = 11,760 N
When the man stands on top of the buoy, his weight is added to the system. The additional weight is:
Additional weight = Mass of the man * Gravitational acceleration
Additional weight = 80 kg * 9.8 m/s^2 = 784 N
The additional weight will increase the total weight of the system, and consequently, the buoyancy force will also increase.
The additional distance the buoy will sink can be calculated using Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the object.
Additional distance = Additional weight / (Cross-sectional area * Fluid density)
The cross-sectional area of the buoy can be calculated using the diameter:
Cross-sectional area = π * (Diameter/2)^2 = π * (0.9 m / 2)^2
Assuming the fluid density of saltwater is 1025 kg/m^3, we can substitute the values into the equation:
Additional distance = 784 N / (π * (0.9 m / 2)^2 * 1025 kg/m^3)
Calculating the additional distance will provide the specific value based on the given dimensions and assumptions.
In summary, to find the additional distance the buoy will sink when a man stands on top, we consider the change in buoyancy force due to the added weight. By using Archimedes' principle, the additional distance can be calculated by dividing the additional weight by the cross-sectional area of the buoy multiplied by the fluid density.
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black holes, by definition, cannot be observed directly. what observational evidence do scientists have of their existence?
Scientists have observational evidence of black holes through indirect methods, such as studying the effects of their strong gravitational pull on surrounding matter, detecting X-rays emitted from accretion disks.
Black holes, by definition, cannot be observed directly since no light or information can escape their gravitational pull. However, scientists have gathered compelling evidence for their existence through indirect observations. One such method involves studying the effects of black holes on surrounding matter. As matter falls into a black hole's gravitational field, it forms an accretion disk that emits X-rays detectable by space telescopes. Additionally, the detection of gravitational waves, ripples in spacetime caused by the acceleration of massive objects, provides strong evidence for the existence of black holes. Advanced detectors like LIGO and Virgo have successfully observed gravitational waves generated by black hole mergers, confirming their presence in the universe.
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80 POINTS, BRAINLIEST, AND QUESTION IS MULTIPLE CHOICE!!! (please answer quickly)
question:
If all matter has a gravitational force, why don’t two tennis balls on the ground move towards each other on their own?
A. The force of gravity from the tennis balls is too small.
B.The tennis balls are outside of each other’s gravity field.
C.The tennis balls are too small to produce any gravity.
D.There is too much friction between the balls and the ground
(the picture is just of the question)
Answer:
Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Explanation:
I could be wrong but I would say B :)
Have a good day!
answer:
i believe the answer is d
explanation:
here's why;
c. is incorrect because everything has a gravitational force.
a. is also incorrect because gravity is what holds the tennis ball down and keeps it on the ground.
i don't really know how to explain why b. is wrong, but d. is the correct answer because the force of friction opposes the motion of an object, causing moving objects to lose energy and slow down.
good luck :)
i hope this helps
**please let me know if this was incorrect**
have a great day !!
The Moon's velocity changes continuously as it orbits the earth, bat on average its translational velocity comes out to about 2.3 kilometers per second. what is tthis speed in proper SI units
The SI unit of the Moon's average translational velocity is 2,300 m / s.
What is the speed of the moon in proper SI unit?
SI unit is the standard form of representing both derived quantity and fundamental quantities.
The SI unit of velocity include the following;
meter per second = m / s
kilometer per hour = km / h
The SI unit of the Moon's average translational velocity is calculated as follows;
v = 2.3 km / s
1 km = 1,000 m
v = ( 2.3 km / s ) x ( 1000 m / 1 km )
v = 2,300 m / s
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Please help me
Have you ever sat high in the stadium at a baseball game and heard the sound of a ball being hit by a bat? Did you notice that you heard the sound after you saw the ball being hit?
Explain why you think this happened.
Answer:
Explanation:
The other answer is correct: the act of hitting a ball with a bat creates a sound. You see the act of hitting almost immediately because light travels very fast. The sound on the other hand travels much slower. So if you sit high in the stadium, the sound has to travel for a long distance before reaching you. That is why you hear the sound after you see the ball being hit.
how long would it take a leopard, running at an average speed of 20 m/s to travel 500 m?
Answer:
25 seconds
Explanation:
500/20
Assuming that the acceleration of an object due to gravity is ag = 10 m/s2, it is possible to find the distance an object falls when dropped by using the equation ay = \frac{1}{2} ag t2. Using this value for gravity, how far would an object drop after 5.0 s?
105 m
125 m
135 m
115 m
Answer:
125 m
Explanation:
i just did the edpuzzle
If a wire 150cm long and diameter 1. 0ml is made from an alloy of resistivity 44×10^-8 ohms what is the resistance of the wire
The acceleration that the same net force would give to an 18-kg tool is 13.3 m/s² (meters per second squared).
Define Newton's second law of motion?According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass.
Mathematically, this can be expressed as F = ma, where F is the net force, m is the mass, and a is the acceleration.
In the given scenario, the net force is accelerating a 4.8-kg tool at 40 m/s². To find the acceleration for an 18-kg tool, we can rearrange the equation to solve for a:
a = F/m
Substituting the values, we have:
a = (F)/(18 kg) = (40 m/s²)/(18 kg) = 2.22 m/s²
Therefore, the net force would give an acceleration of 2.22 m/s² to an 18-kg tool.
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if a man pulls a box with a forcce of 90N at an angle of 45 degrees then what are x and y components of the force
The x and y components of the force will be 63.6 N and 63.6 N respectively.
What is velocity?The change of distance with respect to time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.
The given data in the problem is
Force, F=90 N
Angle,θ = 45°
The force of 90N at an angle of 45 degrees;
The force is resolved in the x and y direction as;
\(\rm F_x = 90 cos 45 ^ 0 \\\\ F_x = 63.6 \ N\)
\(\rm F_y = 90 sin 45^0 \\\\ F_y =63.6 \ N\)
Hence x and y components of the force will be 63.6 N and 63.6 N respectively.
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a vector of 6 cm pointed to the right is multiplied by 2.5 include magnitude and direction
Answer:
15 cm, right direction
Explanation:
Given that :
A vector with magnitude 6cm pointing to the right is multiplied by 2.5
Vector multiplication :
Magnitude of vector = 6 × 2.5 = 15 cm
The direction of the vector will still be the same as it will point towards the initial (right direction).
three equal negative point charges are placed at three of the corners of a square of side d . what is the magnitude of the net electric field at the center of the square? ( k
The magnitude of the net electric field at the center of the square is zero.
When three equal negative point charges are placed at three corners of a square, the forces exerted by the charges cancel each other out at the center of the square, resulting in a net electric field of zero.
Each negative charge creates an electric field that points radially away from it. At the center of the square, the electric fields from the three charges will have equal magnitudes but opposite directions. Due to the symmetry of the system, the vectors representing the electric fields will cancel each other out, resulting in a net electric field of zero.
This cancellation of electric fields at the center of the square is a consequence of the equal magnitudes and positioning of the charges. If the charges were not equal or if they were not positioned symmetrically, the net electric field at the center of the square would not be zero.
In summary, the presence of three equal negative point charges at the corners of a square leads to the cancellation of electric fields at the center, resulting in a net electric field of zero.
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A rectangular block of sides 5.0 cm x 10.0cm x 20.0cm is made of material of density 2.50 g/cm³. Find the pressure it can exert resting with the sides 5.0 cm and 10.0cm on a horizontal surface. [g= 10 m/s² or 1000 cm/s²]
The rectangular block exert a pressure of 500,000 Pascals on the horizontal surface with its sides measure out 5.0 cm and 10.0 cm.
To calculate the pressure exert out by the rectangular block on the horizontal surface, take the formula:
Pressure = weight ÷ area
In which:
Weight = mass × gravity
Mass = density × volume
Area = length × width
According to question:
Density of the material = 2.50 g/cm³
Dimensions of the block:
Length = 5.0 cm
Height = 20.0 cm
Width = 10.0 cm
Gravity = 1000 cm/s²
Firstly, convert the dimensions from centimeters to meters:
Length = 5.0 cm
= 5.0 cm ÷ 100 = 0.05 m
Width = 10.0 cm
= 10.0 cm ÷ 100 = 0.10 m
Height = 20.0 cm
= 20.0 cm ÷ 100 = 0.20 m
Next, find the mass of the block:
Volume = length × width × height
Volume = 0.05 m × 0.10 m × 0.20 m
= 0.001 m³
Mass = density × volume
Mass = 2.50 g/cm³ × 0.001 m³
= 2.50 kg
Now, find the weight of the block:
Weight = mass × gravity
Weight = 2.50 kg × 1000 cm/s²
= 2500 N
At the last find the pressure:
Area = length × width
Area = 0.05 m × 0.10 m
= 0.005 m²
Pressure = weight ÷ area
Pressure = 2500 N ÷ 0.005 m²
= 500,000 Pa
Therefore, the rectangular block exert a pressure of 500,000 Pascals on the horizontal surface with its sides measure out 5.0 cm and 10.0 cm.
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Imagine you are mpho:how can you help your friend (phenyo) not to be influenced by media? you really feel she needs some help because she is neglecting her school work write 2 paragraphs
One of the ways to help someone not to be influenced by media is:
Encourage independent thinking.Let her know that she should make sure the information she is consuming is free from bias and is factual.What is Media Influence?This refers to the effects and reactions which the mass media has on the people who listen to them by shaping their views and by controlling the narrative.
With this in mind, we can note that if a person is overtly influenced by the media, then such a person lacks independent thinking and becomes emotional by what he watches on the television or reads from an online source.
This can be changed through the encouragement of independent thinking, and the need to check for factual information from the media news and also to focus more on studies.
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100 pts.
An object 8.25 cm from a lens creates a virtual image at -26.8 cm from the lens. What is the focal length of the lens?
(Mind your minus signs.) (Unit = cm)
Answer:
1 / f = 1 / i + 1 / o 1 / f = (o + i) / i o
f = i o / (o + i)
f = -26.5 * 8.25 / (8.25 - 26.8)
f = -221 / -.308 = 11.8 cm
An open, clean glass tube (theta=0°)is inserted vertically into a pan of water at 60 °F.What tube diameter(in ft)is needed if the water level in the tube is to rise one tube diameter (due to surface tension)? Give your answer in feet.
The diameter of the tube needed for the water level to rise one tube diameter due to surface tension is approximately 1/12 inch, calculated using the formula d = 2T cos(θ) / (ρgh) where T, θ, ρ, and g are given values.
The rise of the water level in the tube due to surface tension is given by the formula:
h = 2T cos(θ) / (ρgd)
where h is the rise in the water level, T is the surface tension of water, θ is the contact angle (in this case, θ = 0°), ρ is the density of water, g is the acceleration due to gravity, and d is the diameter of the tube.
We can rearrange this formula to solve for d:
d = 2T cos(θ) / (ρgh)
where we have used g = 32.2 ft/s^2 as the acceleration due to gravity and ρ = 62.4 lb/ft^3 as the density of water at 60 °F.
The surface tension of water at 60 °F is approximately T = 5.11 x 10^-2 lb/ft.
Substituting the given values into the formula for d, we get:
d = 2 * 5.11 x 10^-2 lb/ft * cos(0°) / (62.4 lb/ft^3 * 32.2 ft/s^2 * 1 ft) ≈ 0.001 ft
Therefore, the diameter of the tube needed for the water level to rise one tube diameter due to surface tension is approximately 0.001 ft or 1/12 inch.
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what is the best electricity to help conserve energy
Answer:
Compact fluorescent lights, halogen incandescent bulbs, along with light-emitting diode bulbs can help save energy from using 25-80% less electricity.
Explanation:
a force of 4 kg weight acts on a body of mass 9.8 kg calculate the acceleration
please add good explanation
Answer:
here given is a weight
then force becomes mg
that is F=Mg
=4*9.8
then by using the formula
F=Ma
a=F/M
=4*9.8/9.8
=4
Explanation:
Using newtons second law
\(\\ \bull\sf\dashrightarrow Force=Mass\times Acceleration\)
\(\\ \bull\sf\dashrightarrow Acceleration=\dfrac{Force}{Mass}\)
\(\\ \bull\sf\dashrightarrow Acceleration=\dfrac{9.8}{4}\(
\(\\ \bull\sf\dashrightarrow Acceleration=2.45m/s^2\)