Answer:Explanation: The field lines of the electric charges extend from the positive to negative side charge. ... The force between the two charged balls is attractive. It is directly proportional to the product of their charges and inversely proportional to the magnitude of the distance between them.
Explanation:
hope this helps
does sound waves move quicker through cold or warm matter
Answer:
Warm matter
Explanation:
Atoms in warm matter are more easily excitable - they jiggle and move more rapidly than atoms in a cold environment, and since a sound wave is a wave of vibrating matter, these waves will naturally travel quicker when it's warmer.
Calculate the momentum of a 1000 kg sports car traveling at 30 m/s.
Answer:
30,000 kgm/s
Explanation:
m = 1000 kg
v = 30 m/s
Plug those values into the equation:
p = mv
p = (1000 kg)(30 m/s)
p = 30,000 kgm/s
The momentum of a 1000 kg sports car traveling at 30 m/s is 30,000 kgm/s.Linear momentum = Mass x Speed.
What is the momentum?The product of an object's mass, m, and its velocity, v, is the vector quantity known as linear momentum. It is represented by the letter "p," which is also used to denote momentum.
Mass of car = 1000 kg
Speed by which car moves = 30 m/s. The momentum of the car =?
Recall that:
Linear momentum = Mass x Speed
= 1000 kg x 30 m/s.
= 30,000 kgm/s
The sum of an object's mass (m) and velocity (v) is known as the object's linear momentum. An equation can be used to explain this relationship. Momentum is defined as the body's mass times its velocity. P = m times v, etc.
Therefore, the momentum of a 1000 kg sports car is 30,000 kgm/s if travels at 30 m/s.
Learn more about momentum, here:
https://brainly.com/question/15350658
#SPJ2
I need help with my science.
Answer:
1: 2
2: 5
Explanation:
hope this helps <3
PLEASE HELP
TOPIC - CONVECTION
Answer:
At B
Explanation:
If it's placed on place B as soon as the cold water arrived it will have time to heat. Hope this helps and best of luck
Kitty is pushing her shopping trolley along the ground. She applies a constant force to move the trolley 4 m horizontally. If she does 32 J of work, calculate how much force she is applying.
Answer:
the constant force applied by Kitty is 8 N.
Explanation:
Given;
work done by Kitty, W = 32 J
distance moved by Kitty's trolley, d = 4 m
Let the constant force applied by Kitty = F
The work done by Kitty is calculated as follows;
W = F x d
F = W / d
F = 32 / 4
F = 8 N.
Therefore, the constant force applied by Kitty is 8 N.
Circle the letter of each sentence that is true about calculating the
acceleration of a moving object.
A.) If an object is moving without changing direction, then its acceleration is the change in its speed during one unit of time.
B.) If an object's speed changes by the same amount during each unit of
time, then the acceleration of the object at any time is the same.
C.) To determine the acceleration of an object, you must calculate the
change in velocity during only one unit of time.
D.) If an object's acceleration varies, then you can describe only average
acceleration.
Answer: D
Explanation:
Which of the following statements best describe the frequency of a wave?
A. It tells the height of each wave that passes through a given amount of time
B. It tells the number of wave cycles that passes through a given amount of time.
C. It tells how fast or slow a wave is moving
D. It tells the length of each wave that passes through a given amount of time
Answer:
I believe the answer is B.
A chemical reaction is the only way to an
A: Element
B: Pure Substance
C: Mixture
D: Solution
Answer:
B: Pure Substance
Explanation:
Please help me I am desperate this is due now
Answer:
Distance travelled is 7 meters and the displacement is 3 meters
what is the correct equation for calculating kinetic energy?
1. kinetic energy = potential energy - total energy
2. kinetic energy = total energy - potential energy
3. kinetic energy = 1/2 x (total energy + potential energy)
4. kinetic energy = potential + total energy
Answer:
2. kinetic energy = total energy - potential energy
Explanation:
The total energy of a system is the addition of kinetic and potential energy of the system. Kinetic energy can be regarded as form of energy posses by an object when it's in motion
Total energy = kinetic energy + potential energy
(If we make Kinectic energy the subject of the formula, we have)
kinetic energy = total energy - potential energy
An object is most likely to become electrically charged by gaining or losing which type of particles?
neutral particles
positive particles
negative particles
none of the above
Answer:
negative particles
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.
Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.
Hence, an object is most likely to become electrically charged by gaining or losing negative particles.
Plssss I need help——— Balloon A is (A. Negatively, B. Not, C. Positively) charged, and balloon C is (A. Negatively, B. Not, C. Positively) charged. Balloon A approaches balloon C, there’ll be a force of (A. Attraction, B. Repulsion) between them.
Answer:
B. Not
C. Positively
A. Attraction
Uranus requires 84 years to circle the sun. Find uranus's average distance from the sun as multiple of earth's average distance from the sun
Answer:
Uranus’ distance from the Sun is 2.88 billion km. The exact number is 2,876,679,082 km. Want that number in miles? Uranus’ distance from the Sun is 1.79 billion miles.
Explanation:
Uranus's average distance from the sun as multiple of earth's average distance from the sun is 19.2 AU.
According to Kepler's third law, the square of the period of revolution of the planets is equal to the cube of their mean distance from the sun in astronomical units.
Using this law;
T^2 = r^3
T = period of revolution = 84 years
r = distance = ?
r = 3√T^2
r = 3√( 84)^2
r = 19.2 AU
Learn more: https://brainly.com/question/8646601
15 facts of conservation of energy
Answer:
Ello, estoy aquí para ayudar, pero hablo español con optimismo, comprenderá lo que estoy diciendo. Intentaré ayudarlo. Espero que tengas un buen dia <3
Explanation:
a rail car moving at 10m/s collides with and connect to another stationary car. What is their final velocity?
Assume they have the same mass
Answer:
read this it might help some
When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.
Explanation:
When the north poles of two magnets are kept close , they will __________
attract
rotate
repel
remain unaffected
HELP ✋‼️‼️
What happens to the speed of a sound wave as it travels from air into glass?
Water
Diamond
Glass
Air
1,493
12,000
5,640
346
Speed of
sound
(m/s)
O A. It falls to zero.
B. It decreases.
O c. It stays the same.
D. It increases
Answer:D increases
Explanation:
When sound travels from air into glass, speed of a sound wave increases. Hence option D is correct.
What is a wave ?Wave is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down.
Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase.
Phase is the position of a wave at a point at time t on a waveform.
speed of the sound is greatest in solid and it is medium in liquid and lowest in gaseous state.
In this problem sound wave is going from air to glass, it is actually going from gaseous to solid state, as speed of sound is greatest in the solid, speed of the sound increases to 5.640 m/s.
Hence option D is correct.
To know more about sound, click :
https://brainly.com/question/29707602
#SPJ7.
Calculate the density of mass 150 grams and volume 35 〖cm〗^3
Explanation:
Mass =150g = 0.15kg
Volume= 35cm^3 = 0.35m^3
Density= Mass×Volume
= 0.15kg × 0.35m^3
= 0.05 kg m^3
What is the weather like in a temperate grassland? (Select all that apply.)
summers are mild to hot
winters are cold
summers are cool
winters are mild
Freefalling object starts from rest after falling for six seconds what will be its velocity
Answer:
60m/s
Explanation:
since the object is falling under the influence of gravity, the formula is
v = u +gt
before the fall, the object is at rest then
u = 0m/s
v = 0 + 10×6 because acceleration due to gravity is g which is given as 10m/s2
therefore, v = 60m/s
Explain why white light splits up into the different colours when it goes through a prism
Explanation:
beacuse light is mixture of many different colours,each with different frequency
what is Focal Point
help me please
Answer:
The point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed is called focal point
acontainer is filled whith mercury to alevel of 10m whit water to alevel of 8m and whit oil to alevel of 5m the densities oil ,water and mercury are 0.8g/cm³,1g/cm³ and 13.6g/cm³ calculate the total pressure exerted by the liquids at the base
Answer:
1450.4 KN[tex]m^{2}[/tex]
Explanation:
Pressure = ρhg
where: ρ is the density of the liquid, h is the height and g the force of gravity.
Total pressure exerted by the liquids at the base = Pressure of oil + Pressure of water + Pressure of mercury
So that,
i. Pressure of oil = ρhg
(ρ = 0.8 g/cm³ = 800 kg/m³)
= 800 x 5 x 9.8
= 39200
Pressure of oil = 39200 N[tex]m^{2}[/tex]
ii. Pressure of water = ρhg
(ρ = 1 g/cm³ = 1000 kg/m³)
= 1000 x 8 x 9.8
= 78400
Pressure of water = 78400 N[tex]m^{2}[/tex]
ii. Pressure of mercury = ρhg
(ρ = 13.6 g/cm³ = 13600 kg/m³)
= 13600 x 10 x 9.8
= 1332800
Pressure of mercury = 1332800 N[tex]m^{2}[/tex]
So that,
Total pressure exerted by the liquids at the base = 39200 + 78400 + 1332800
= 1450400
= 1450.4 KN[tex]m^{2}[/tex]
Total pressure exerted by the liquids at the base is 1450.4 KN[tex]m^{2}[/tex].
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
A ball with a mass of .012 kg moving at 15.0 m/s collides with a second ball with a mass of 36 g
moving at 5.0 m/s. After the collision, the 12 g ball moves in the same direction at 6.0 m/s. What
is the resulting velocity of the 36 g ball?
Answer:
Final velocity of ball B V2 = 8 m/s
Explanation:
Given:
Mass of Ball A M1 = 12 gram
Mass of Ball B M2 = 36 gram
Initial velocity of ball A U1 = 15 m/s
Initial velocity of ball B U2 = 5 m/s
Final velocity of ball A V1 = 6 m/s
Find:
Final velocity of ball B V2
Computation:
Using conservation of momentum;
M1U1 + M2U2 = M1V1 + M2V2
(12)(15) + (36)(5) = (12)(6) + (36)(v2)
180 + 180 = 72 + (36)(v2)
Final velocity of ball B V2 = 8 m/s
What is used in a torch?
a. Dry cell
b. Secondary cell
c. Generator
d. Fuse
Answer:a.Dry cell
Explanation: A dry cell is a type of electric battery, commonly used for portable electrical devices like a flashlight
Answer:a.Dry cell
Explanation:
suppose kinetic energy is 4 joules of a moving object what will happen if we increase the speed twice
(guys pls show me the work out)
Answer:
The kinetic energy is 16 joules.
Explanation:
Kinetic energy (E) is given by:
[tex] E = \frac{1}{2}mv^{2} [/tex]
Where:
m: is the mass
v: is the speed
When the kinetic energy is 4 joules, the speed of the object is:
[tex] v_{1}^{2} = \frac{2E_{1}}{m} = \frac{8}{m} [/tex]
Now, if the speed is increased twice then we have:
[tex] E_{2} = \frac{1}{2}mv_{2}^{2} = \frac{1}{2}m(2v_{1})^{2} = \frac{1}{2}m[4(\frac{8}{m})] = 16 J [/tex]
Therefore, the kinetic energy is 4 times the initial value.
I hope it helps you!
Each planet has several properties for which scientists colleci Uald. Angle of Axis Tilt Planet Orbital Length Speed of Day (km/s) (hours) Mass (kg) 30 24 Earth 23.4° 6.0 x 1024 Saturn 26.7° 11 5.7 x 1026 10 Another characteristic of Saturn is that it has a much thicker atmosphere than Earth. Based on is most responsible for this difference? O A. their different orbital speeds O B. their difference in length of day O C. their different axis angles of tilt O D. their difference in mass Reset Next Question
Answer:
so basically
Explanation:
ty for the free points tho ez ez ez ez jajjajajajajajjajaj ez ez ez free cash dog water
Any element can always be identified by its_____.
Atomic mass
Number of neutrons
Number of protons
Atomic number
Answer:
c
Explanation:
Answer:
Number of protons and atomic number
Explanation:
8. Calculate the impulse of a 14kg rock that starts at rest and falls to a speed of 6m/s?
Answer:
84 kgm/s
Explanation:
mvf - mvi = impulse
(14kg)(6m/s) - (14kg)(0m/s) = 84 kgm/s
A 10 kg box initially at rest is pulled with a 50 N horizontal force for 4 m across a level surface. The
force of friction acting on the box is a constant 20 N. What type of energy does the box have after it
is done being pulled?
A. Elastic
B. Gravitational
C. Chemical
D. Kinetic