Answer:
Sphere X is positively charged while sphere Y is negatively charged
Explanation:
The method described in the given experiment is known as charging by induction. Charging by induction is a method used to charge an object without actually touching the object to any other charged object
When a negatively charged rubber rod is brought near the uncharged sphere X, charges are induced in the metal sphere. Positive charges are attracted to to the rubber rod whereas negative charges are repelled away from the rod. Since the spheres are mounted on insulated stands, the induced charges remain on the sphere. When sphere Y is made to touch sphere X, the negative charges from X flow into Y leaving it with excess negative charges. When Y is then removed from X, the excess negative charges are then evenly distributed across the surface of Y. Finally, the rubber rod is moved far way from X leaving X with excess positive charges due to the electrons that have flowed from it into Y.
Sphere X is positively charged while sphere Y is negatively charged
What is charging by induction?The method described in the given experiment is known as charging by induction. Charging by induction is a method used to charge an object without actually touching the object to any other charged object
When a negatively charged rubber rod is brought near the uncharged sphere X, charges are induced in the metal sphere. Positive charges are attracted to to the rubber rod whereas negative charges are repelled away from the rod.
Since the spheres are mounted on insulated stands, the induced charges remain on the sphere. When sphere Y is made to touch sphere X, the negative charges from X flow into Y leaving it with excess negative charges.
When Y is then removed from X, the excess negative charges are then evenly distributed across the surface of Y. Finally, the rubber rod is moved far way from X leaving X with excess positive charges due to the electrons that have flowed from it into Y.
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The __________________ is the entire range of Electromagnetic Waves.
Absorption
Opaque
Electromagnetic Spectrum
Refraction
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
Answer:
I think its the electromagnetic spectrum
Please answer this question correctly
Answer:
0.1m/s²
Explanation:
acceleration =(final velocity - initial velocity)÷time taken
acc=(2-0)÷20
av. acc=0.1m/s²
is anyone good at physics like Newton's Laws if so can you say yes and come to this post at 12:03 I will give you 50 points.
Answer:
Yep
Explanation:
Two sprinters A and B of mass 70kg ad 55kg respectively are running with the
same speed in the same direction. Which of the following is NOT true?
1) A has a greater Kinetic energy
Greater force is needed to stop A
The momentum of A is greater than B
iv)
B will finish the race before A
V B has greater kinetic energy
A. ii) and iv) only B. v) only C. iii), iv )and v) only D. iv) and v) only
Visible light waves do not diffract as well as radio waves because _____
a. the energy of visible light is too high
b. the frequency of the light waves are too low
c. the wavelength of the light waves are too small
d. the speed of light waves is too slow
Visible light waves do not diffract as well as radio waves because the wavelength of the light waves are too small.
What is Wavelength?This is defined as the distance between corresponding points of two consecutive waves.
Light waves have a small wavelength which is why it doesn't diffract as well as radio waves thereby making option C the most appropriate choice.
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the feather experiences 0.075 N of downward force. Assuming it is on earth, what is its mass?
Answer:
The mass of the feather would be 0.0075 kg.
Explanation:
If the feather were to be on earth, it would have experienced the gravitational pull of the earth downwards. So that from Newton's second law of motion,
F = mg
where f is the force on the object, m is the mass of the object and g is the acceleration due to gravity of the earth.
But, F = 0.075 N, g = 10 m/[tex]s^{2}[/tex].
So that,
0.075 = m x 10
m = [tex]\frac{0.075}{10}[/tex]
= 0.0075 kg
The mass of the feather would be 0.0075 kg.
Analyze each line (A,B,C and D) on this graph to describe the acceleration, and
conclude which line represents the highest acceleration during time 10 sec to 15 sec.
Answer:
i think the 2nd one
the first=0 b/c it's initial velocity and final ones are equal the third one is constant
Believing that Nick will not be a good waiter because he is 60 years old is an example of O Stereotype O Prejudice Situational attribution All of the above
5 points
A ball is thrown upward from y=0, with an initial velocity vo and then slows down with constant acceleration due to
the Earth's gravity. The ball comes to rest at a height h. Which one of the following formulas correctly states the
distance, h, to the top of the trajectory in terms of the initial velocity?
Answer:
[tex] \frac{{v}^{2} g}{2 } [/tex]
Two dump trucks each have a mass of 1,500 kg. The distance of the dump truck
is 50m. What will the new gravitational force be between them?
Answer:
6.00 x 10⁻⁸N
Explanation:
Given parameters:
Mass of each dump trucks = 1500kg
Distance between them = 50m
Unknown:
New gravitational force between them = ?
Solution:
From Newton's law of universal gravitation,
F = [tex]\frac{G m1 m2}{r^{2} }[/tex]
F is the gravitational force
G is the universal gravitation constant
m is the mass
r is the distance
F = [tex]\frac{6.67 x 10^{-11} x 1500 x 1500}{50^{2} }[/tex] = 6.00 x 10⁻⁸N
Suppose that 6 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 43 cm. (a) How much work is needed to stretch the spring from 33 cm to 38 cm
Answer:
Workdone = 0.67 Joules
Explanation:
Given the following data;
Workdone = 6J
Extension = 43 - 28 = 15cm to meters = 15/100 = 0.15m
The workdone to stretch a string is given by the formula;
Workdone = ½ke²
Where;
k is the constant of elasticity.
e is the extension of the string.
We would solve for string constant, k;
6 = ½*k*0.15²
6 = ½*k*0.0225
Cross-multiplying, we have;
12 = 0.0225k
k = 12/0.0225
k = 533.33N/m
a. To find the workdone when e = 33, 38.
Extension = 38 - 33 = 5 to meters = 5/100 = 0.05m
Workdone = ½*533.33*0.05²
Workdone = 266.67 * 0.0025
Workdone = 0.67 Joules
Therefore, the amount of work (in J) needed to stretch the spring from 33 cm to 38 cm is 0.67.
state the law of nature
Answer:
Law of nature, in the philosophy of science, a stated regularity in the relations or order of phenomena in the world that holds, under a stipulated set of conditions, either universally or in a stated proportion of instances. ...
It is not killing plants the same thing as this...
Example:natural law in our society is that it is wrong for one person to kill another person.
Explain how to identify a starting position on a line.
Answer:
We can easily find out the beginning point of the line by using dot representation. When it comes to position vector, it expresses the exact position of certain object from the starting point of the coordinate system. The vector is a straight line that has a certain end which is fixed to its body.
Position vectors are used to determine the starting position of a line with reference to the origin or starting point of the coordinate system
Position vectors start at the origin and terminate at any arbitrary point.
In terms of position of a line, position vectors depict the exact position of a line from the starting point of the coordinate system.
In terms of direction of the line, the direction of the position vector points from the starting point of the coordinate system towards the given point.
Thus, we can conclude that position vectors are used to determine the starting position of a line with reference to the origin or starting point of the coordinate system.
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1. Who helped Mendeleev ride 1200 miles to a university in Moscow only to be rejected?
Answer: that guy
Explanation:
I need help with this question
Option 3) a Soccer Ball
will travel the farthest distance.
Answer:
a bowling ball
pls follow me and Mark as brainliest and follow me to get free thanks to all your answers
1 point) One of Kepler's three laws of planetary motion states that the square of the period, P, of a body orbiting the sun is proportional to the cube of its average distance, d, from the sun. The Earth has a period of 365 days and its distance from the sun is approximately 93,000,000 miles. (a) Find P as a function of d. P(d)
Answer:
P = √1.66 * 10^-19 days^2miles^-3d^3
Explanation:
The mathematical statement of Kepler's third law is;
P^2 α d^3
Where;
P = Period of the body orbiting the sun
d = its average distance from the sun
Introducing a constant of proportionality K, known as Kepler's constant then;
P^2 = Kd^3
K = P^2/d^3
P=365 days
d = 93,000,000 miles
K = (365)^2/(93,000,000)^3
K=1.66 * 10^-19 days^2miles^-3
P = √1.66 * 10^-19 days^2miles^-3d^3
A vertical beam of power intensity P (in Watts/m2 ) passes downward through a particular substance. The rate at which P decreases with respect to the thickness t (in meters) through which the beam has passed is proportional to P(t). The power intensity P at the top of the substance is 3,000 W/m2 . The power intensity P at a depth of 2.00 meters below the surface is 600 W/m2 . What is the power intensity P at a depth of 1.25 meters below the surface
Answer:
x = 1162.5 W/m²
Explanation:
Since, the power decrease is proportional to the depth of the beam. Therefore, interpolation can be used to find the intensity of power at a depth of 1.25 m. First we calculate the slope from know points:
[tex]Slope = \frac{\Delta y}{\Delta x} \\\\Slope = \frac{(1500 - 3000)\ W/m^{2}}{(2 - 0)\ m} \\\\Slope = -750\ W/m[/tex]
Now, we can find the unknown value by using this slope:
[tex]Slope = -750\ W/m = \frac{(600 - x)\ W/m^{2}}{(2 - 1.25)\ m}\\\\(-750\ W/m)(0.75\ m) = (600 - x)\ W/m^{2}\\x = 600\ W/m^{2} + 562.5\ W/m^{2}\\[/tex]
x = 1162.5 W/m² (Power intensity at depth of 1.25 m)
Which of the following examples, would best represent the input energy and then
'wasted energy forms when watching TV.
A. Chemical, and then heat and electrical.
B. Chemical, and then heat, kinetic, sound
C. Electrical, and light, sound, heat
D. Electrical, and then sound and heat
Answer:
I think the answer is c electrical, and light , sound hewt
HELP URGENT WILL GIVW BRAINLIEST
Answer: IT IS C TRUST ME DID IT
Explanation: OK BYE GOOD LUCK
_____ alloy panels have replaced ceramic tiles on the space shuttle's
heat shield because they are less prone to cracking.
please help, will mark brainliest if answer turns out to be correct
Answer:
Fibrous refractory composite insulation (FRCI) tiles
Answer:
Umm... FRCI tiles can't be correct; they're made of 99.9% pure silica fibers, which are basically porcelain. Sounds like the answer is aluminium.
Explanation:
I am not well-versed on this; I looked it up. But I hope you get it right!
A 12 volt battery will increase the potential energy of 4 coulombs of charge by _____ Joules.
Question 8 options:
16 J
3 J
.33J
48 J
Answer:
Explanation:
Given parameters:
Voltage = 12V
Quantity of charge = 4C
Unknown:
Potential energy = ?
Solution:
Within this circuit, the value of the potential energy can be found using the expression below:
Potential energy = [tex]\frac{1}{2}[/tex] c v²
c is the quantity of charge
v is the voltage
Potential energy = [tex]\frac{1}{2}[/tex] x 4 x 12² = 288J
A rocket has a mass of 156,789 kg and is traveling at 45.6 m/s. How much kinetic energy does the rocket
possess?
Explanation:
K.E =1/2 mv^2
=1/2(156789)(45.6)^2
=78,394.5 × 2,079.36
=163,010,387.52 kg m/s
This should be your answer.
An fm radio station broadcast electromagnetic waves at a frequency of 94.5 MHz(9.45x10^7 Hz) these radio waves have a wavelength of 3.17 m. What is the speed of the waves?
Answer:
94,5 x 3,17 = 299,565 m/s
Explanation:
To find the speed of waves (V), you just need to multiply wavelength with frequency. That's all.
The speed of the given electromagnetic waves is equal to 3 × 10⁸ m/s.
What are frequency and wavelength?The frequency can be described as the number of oscillations of a wave in 1 second. The S.I. units of the frequency can be represented as per second or hertz.
The wavelength can be described as the distance between the two points in phase on the wave w.r.t. each other. The separation between two crests or two troughs on a wave is known as wavelength.
The relation between the wavelength (λ) of the wave, frequency (ν), and speed of the wave (V) can be written as:
V = νλ
Given, the frequency of the wave, ν = 94.5 MHz = 94.5 ×10⁶ s⁻¹
The wavelength of the waves, λ = 3.17 m
The speed of the waves can determine from the above-mentioned relationship:
V = λν = 3.17 × 94.5 ×10⁶ = 3 × 10⁸ m/s
Therefore, the speed of the wave is equal to 3 × 10⁸ m.
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Besides gravity, what factor keeps the moon and Earth in orbit?
force
inertia
mass
distance
Answer:
interna
Explanation:
please mark as brainllest
Water boils to power a steam engine. Which statement best describes the changes in the water as it boils?
Option B
kskmsnsnsmjsjsn
Answer:
C. The potential energy of the particles increases as the intermolecular forces are overcome
Explanation:
Sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motionstays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
A Unbalanced force
B Newton's Second Law of Motion
С Newton's Third Law of Motion
D Newton's First Law of Motion
Answer:
D
Explanation:
Newtons first law states that if an object is at rest it will stay at rest only if an unbalanced force acts on it. As well as if an object is in motion it will stay in motion unless an unbalanced force acts on it.
Ps- The object will stay moving in the same speed and direction.
Answer:
D
Explanation:
I just know
You are standing on a street corner with your friend. You then travel 14.0 m due west across the street and into your apartment building. You travel in the elevator 22.0 m upward to your floor, walk 12.0 m north to the door of your apartment, and then walk 6.0 m due east to your balcony that overlooks the street. Your friend is standing where you left her.
Now how far are you from your friend?
Express your answer with the appropriate units.
Answer:
Explanation:
We shall express each displacement vectorially , i for each unit displacement towards east , j for northward displacement and k for vertical displacement .
14 m due west = - 14 i
22.0 m upward in the elevator = 22 k
12 m north = 12 j
6.00 m east = 6 i
Total displacement = - 14 i + 22 k + 12 j + 6 i
D = - 8 i + 12 j + 22 k
magnitude = √ ( 8² + 12² + 22² )
= √ ( 64 + 144 + 484 )
= √ 692
= 26.3 m
Net displacement from starting point = 26.3 m .
Please answer this question correctly
If a large number of waves pass by a certain point in a given time, the waves have a low frequency. none of the above. a high frequency. it doesn't affect frequency.
Answer:
Another term used to describe a wave is frequency. Since waves are moving, we define frequency as the number of waves that pass a given point in a specified unit of time. The unit commonly used is Hertz which is the number of wave cycles pass a point in one second. So one cycle per second equals one Hertz
Using the formula at the beginning of this lesson, calculate the wavelength of a signal from KPhET 98.7. Remember that FM stations transmit in the Megahertz range. This means that KPhET is transmitting a frequency of 9.87 x10∧7 hz. What is the wavelength of the signal from this radio station?
Answer:
3.04 m ???
Explanation:
The wavelength of the signal from KPhET 98.7 radio station is 3.05 meter.
What is electromagnetic wave?EM waves are another name for electromagnetic waves. When an electric field interacts with a magnetic field, electromagnetic waves are created. These electromagnetic waves make up electromagnetic radiations.
It is also possible to say that electromagnetic waves are made up of magnetic and electric fields that are oscillating. The basic equations of electrodynamics, Maxwell's equations, have an answer in electromagnetic waves.
As radio wave is electromagnetic wave, the speed of radio wave is 3.0×10⁸ m/s.
Given frequency of KPhET is 9.87 x10⁷ Hz.
Hence, the wavelength of the signal from this radio station is = ( velocity ÷ frequency)
= 3.0×10⁸ m/s ÷ 9.87 x10⁷ Hz.
= 3.05 meter.
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