Answer: C
Explanation: The warm, wet air in a low pressure system has risen up and cooled down.
Please give Brainliest if you can!
Answer: C
Explanation: When John stepped outside, he saw the clouds because the warm, wet air in a low pressure system has risen up and cooled down. This is what will fall down as rain fall.
all of u what is the cause for moving object to speed up or down
Answer:
Forces make things speed up (or accelerate). When a force pushes or pulls the object, the object will move in the direction of the force. The bigger the force, and the lighter the object, the greater the acceleration.
Explanation:
What evidence can be used to explain that energy cannot be created nor destroyed?
Answer: The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. The First Law of Thermodynamics (Conservation) states that energy is always conserved, it cannot be created or destroyed. In essence, energy can be converted from one form into another. Hopefully i helped
Explanation:
If a child applies a 3.00 N force for 2.00 m in the same direction the car is already moving, how much work is done on the car?
Answer:
W = 6 J
Explanation:
Given that,
The force acting on the car, F = 3 N
Displacement in the car, d = 2 m
We need to find the work is done on the car. The work done by the car is given by the relation as follows :
[tex]W=Fd\\\\W=3\ N\times 2\ m\\\\W=6\ J[/tex]
So, 6 J of work is done on the car.
Help with this please^^
1) The radiations are associated with both electric and magnetic field is called "Electromagnetic radiation".
4) IR rays, Alpha rays, Beta rays.
Where are fossil fuels found?
А
in the air
B
in the Earth
с
in trees
D
in animals
Answer:
in earth
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Answer:
B. in the Earth
Explanation:
Fossil fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy.
Brainlist pls!
Determine the amount of torque
applied by a 1.0 m long pry bar with
250 N of force acting on it. Assume
that the angle is 90°.
Answer:
250Nm
Explanation:
Given parameters:
Length of the long pry bar = 1m
Force acting on it = 250N
Angle = 90°
Unknown:
Amount of torque applied = ?
Solution:
Torque is the turning force on a body that causes the rotation of the body.
The formula is given as:
Torque = Force x r Sin Ф
r is the distance
So;
Torque = 250 x 1 x sin 90 = 250Nm
The data table shows the sound levels of common noise sources.
A 2 column table with 13 rows. Column 1 is labeled sound in decibels with entries 140, 130, 120, 110, 100, 90, 80, 70, 60, 50, 40, 30, 20. Column 2 is labeled noise source with entries jet engine at 25 meters, jet aircraft at 100 meters, rock and roll concert, pneumatic chipper, woodworking machines, chainsaw, heavy truck traffic, business office, conversational speech, library, bedroom, secluded woods, whisper.
Which profession has the greatest risk of sound damage to the ear?
woodworker
librarian
teacher
truck driver
Answer: woodworker
Explanation: just took it
Based on the data table, the profession with the greatest risk of sound damage to the ear is likely to be a woodworker. The correct option is A.
What is a sound wave?Sound waves are a type of longitudinal wave that travels through a medium, such as air or water, and is caused by the vibration of particles in the medium. When an object vibrates, it creates a disturbance in the surrounding particles, which in turn creates a wave of pressure changes that propagates through the medium. These pressure waves can be detected by our ears and perceived as sound.
The characteristics of sound waves include frequency, wavelength, amplitude, and velocity. Frequency refers to the number of cycles of the wave that occur per second and is measured in Hertz (Hz). Wavelength refers to the distance between two consecutive points in a wave that are in phase with each other. Amplitude refers to the maximum displacement of the particles from their equilibrium position and is related to the loudness of the sound. Velocity refers to the speed at which the wave travels through the medium and is dependent on the properties of the medium, such as its density and stiffness.
Sound waves are used in many applications, including communication, music, medical imaging, and sonar.
Here in the question,
Woodworking machines produce a sound level of 90 decibels, which is considered to be hazardous to hearing with prolonged exposure. Librarians, teachers, and truck drivers are not listed as noise sources in the table and their risk of sound damage would depend on their specific work environment and exposure to noise.
Therefore, According to the data table, the profession with the highest risk of ear damage is likely to be woodworker.
To learn more about frequency click:
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What happens if you disconnect a circuit from its positive terminal BrainPOP question
Answer: The electrons stop flowing, and the current stops. The power source would no longer provide a flow of electrons.
name 6 countries where soccer is called football
Answer:
Brazil, France, Spain ,Puerto rico,Venezuela, Yemen
Explanation:
how does temperature change with the depth in Earth's mantle
Answer:
It increases in depth, indicates the heat flowing from earths warm interior to its surface
What will be the weight of a box, mass 10Kg on the surface of a hypothetical planet having mass double of Earth and the radius is 3 times of Earth
Answer:
W ’= 21.78 kg
Explanation:
The expression for weight is
W = m g
let's look for the acceleration of gravity with the universal law of gravitation
F = G m M / r2
F = m (G M / r2)
without comparing the two equations
g’= G M / r2
in that case M = 2 Mo and r = 3 ro
where mo and ro are the mass and radius of the earth
we substitute
g ’= G 2Mo / (3r₀) 2
G ’= 2/9 G Mo / r₀²
g ’= 2/9 g
the weight of the body on this planet is
W ’= m g’
W ’= m 2/9 g
let's calculate
W ’= 2/9 10 9.8
W ’= 21.78 kg
Complete the sentence
Answer:
There is no sentence.
Explanation:
Two magnets are held apart. Once released, the south pole of one magnet moves toward the north pole of another magnet until the magnets collide. How does the graph reflect the changes in energy that occur?
(1 point)
Kinetic energy is at its peak when the magnets are first released, then it decreases steadily. Energy stored in the magnetic field becomes zero.
The kinetic energy of the system is derived from the thermal energy created by increased velocity. Energy stored in the magnetic field does not change.
Kinetic energy and velocity are at zero when the magnets are held apart, and both increase rapidly when they are released and move together. Energy stored in the magnetic field decreases.
Graph for the two magnets held apart, kinetic energy is highest when the magnets first released, then it decreases steadily. Energy stored in the magnetic field becomes zero.
What is magnetic field?The magnetic field is the field in the space and around the magnet in which the magnetic field can be filled.
Magnetic force is the force of attraction or repulsion between two poles of the two magnets. The magnetic force is also appearing between two electrically charged bodies.
Two magnets held apart. Once released, the south pole of one magnet moves toward the north pole of another magnet until the magnets collide.
The graph reflection of kinetic energy of magnet -
When the two magnets are held apart, then the these magnets are at rest and do not possess any kinetic energy.When, the magnets released, then they started to move each other due to the magnetic force of attraction of opposite poles. Therefore, the kinetic energy between two magnets started to increase with the highest speed.Now, as they started to move towards each other, this speed started to reduced and become zero when they meat each other. Here at this point the energy stored in the magnetic field becomes zero.Therefore, graph for the two magnets held apart, kinetic energy is highest when the magnets first released, then it decreases steadily. Energy stored in the magnetic field becomes zero.
Learn more about magnetic field here;
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What is the mass of a truck if it is accelerating at a rate of 7m/s2 and hits a car with a force of 6,500N?
Answer:
Given
Force of car (F) =6500N
acceleration (a) =7m/s2
R.tc maas=x
Form
F =ma (divid by m both sides)
m=F/a
m=6500N/7m/s2
m=928.6kg
mass =928.6kg
What will happen to the ball in example C if there is no friction?
A) The ball will roll forever in a straight path
B) The ball will roll forever in a curved path
C) The ball will stop rolling eventually
D) The ball's final position will be 10m away from the starting point
Answer:
A) The ball will roll forever in a straight path.
HELP PLS I DONT UNDERSTAND AHHHHHHHH-
Answer:
X rays
Explanation:
doctors use x rays to look at your bones
if my answer helps please mark as brainliest.
PLEASE HELPPP!!!!!
I need help immediately, some answer this question
Answer:
A)It would stay stationery as the resultant force is 0.
B)It would move towards the right as the resultant force is 300N due right.
C)It would move left as the resultant force is 300N due left.
Explanation:
Please make it brainiest answer
A force of 31 N south is used to accelerate an object uniformly from rest to 8 m/s in 22 s. What is the mass of the object?
this question is centered around newtons second law f=ma
First you need to find the acceleration
[tex] acceleration = \frac{8 - 0}{22} [/tex]
that gives you 0.36 recurring(on both numbers) m/s²
mass= force ÷ acceleration
[tex] mass = \frac{31}{0.36recurring} [/tex]
mass= 85.25 kg
if you want to check
f=ma
85.25 × 0.36 recurring (remember its on both numbers not just 6) = 31 N
Answer:
Explanation:
Givens
F = 31 N
vi = 0
vf = 8 m/s
t = 22 seconds
m = ?
Formula
F = m ( vf - vi)/t
Solution
31 = m (8 - 0) / 22 Multiply both sides by 22
31 * 22 = 8 * m
8m = 682 Divide by 8
m = 682 / 8
m = 85.25
How do meteorologists gather data
Answer:
Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models.
1. Which point(s) represent the maximum kinetic energy?
2. Which point(s) represent a zero kinetic energy?
3. Which point(s) represent the maximum potential energy?
4. Which point represents the maximum displacement on the right side?
5. If the distance from P to R takes 1 second, What is the distance from ap to Q?
1. R
2. P and Q
3. P and Q
4. Q
5. 2 seconds
Wait have a diagram to explain better. It's attached above.
Can someone please help for a , what am I meant to do
Big Ben, a large artifact in England, has a mass of 1x10^8 kilograms and the Empire State Building 1x10^9 kilograms. The distance between them is about 5,000,000 meters. What is the force exerted by Big Ben on the Empire State Building?
Answer:
The force, exerted by Big Ben on the Empire State Building is 2.66972 × 10⁻⁷ N
Explanation:
The question relates to the force of gravity experienced between two bodies
The given parameters are;
The mass of Big Ben, M₁ = 1 × 10⁸ kg
The mass of the Empire State Building, M₂ = 1 × 10⁹ kg
The distance between the two Big Ben and the Empire State Building, r = 5,000,000 meters
By Newton's Law of gravitation, we have;
[tex]F=G \times \dfrac{M_{1} \times M_{2}}{r^{2}}[/tex]
Where;
F = The force exerted by Big Ben on the Empire State Building and vice versa
G = The universal gravitational constant = 6.67430 × 10⁻¹¹ N·m²/kg²
M₁, M₂, and r are the given parameters
By plugging in the values of the parameters and the constant into the equation for Newton's Law of gravitation, we have;
[tex]F=6.67430 \times 10^{-11} \times \dfrac{1 \times 10^8 \times 1 \times 10^9}{(5,000,000)^{2}} = 2.66972 \times 10^{-7}[/tex]
The force, 'F', exerted by Big Ben on the Empire State Building is F = 2.66972 × 10⁻⁷ N.
HELLPP I GIVE BRAINLY !!!
which of the following is an example of energy being transformed from nuclear energy to thermal energy ?
A ) Solar powered calculator
B ) Wind turbine
C ) Photosynthesis
D ) Fusion in the sun
Answer:
D ) Fusion in the sun
Explanation:
All reactions in the sun produce thermal energy.
In 1969, Apollo 11 landed on the Moon. It took four days for the spacecraft to travel from Earth to the Moon. In 2006, New Horizons left Earth and reached Pluto in 2015. Based on this information, what is the most reasonable estimate for a spacecraft to travel from Earth to Mars?
Answer:
An estimate for the time it will take for a spacecraft to travel from Earth to Mars is approximately 138.8 days
Explanation:
The distance between Earth and the Moon = 684,400 km
The distance between Earth and Mars = 220.58 × 10⁶ km
The distance between Earth and Pluto = 5.2241 × 10⁹ km
The ratio of the distance between Earth and Pluto and the distance between Earth and Mars = (5.2241 × 10⁹ km)/(220.58 × 10⁶ km) ≈ 23.683
It took 2006 to 2015 (9 years) to travel from Earth to Pluto, therefore, it can take approximately (9 years)/(23.683) ≈ 0.38 of a year which is ((9 years)/(23.683)) × 365.2422 ≈ 138.8 days for a spacecraft to travel from Earth to Mars
1.
A 50 kilogram person carries a 20 newton can to the top of a
3.0 meter high ladder and then drops it to the floor.
Calculate the potential energy of the can when it is
at the top of the ladder.
a.
[801)
b. Determine the kinetic energy of the can when it is
1.0 meter above the floor.
Answer:
Potential Energy = 147Joules
KE = 490Joules
Explanation:
1) Potential Energy = mgh
Mass m = 50kg
g = 9.8m/s^2
height h = 3.0m
Potential = 50*9.8*3
Potential Energy = 147Joules
2) KE = 1/mv^2
Get the velocity
v² = u²+2gh
v² = 0²+2(9.8)(1.0)
v² = 19.6
v = √19.6
v = 4.43m/s
KE = 1/2 * 50 *4.43²
KE = 25 * 19.6
KE = 490Joules
Hence the kinetic energy is 490Joules
(a) The potential energy of the can when it is at the top of the ladder is 1470 J.
(b) The kinetic energy of the can when it is 1.0 meter above the floor is 488.41 J.
Given data:
The mass of the person is, m = 50 kg.
The weight carried by the person is, W = 20 N.
The vertical height of ladder is, h = 3.0 m.
(a)
The energy possessed by an object by virtue of its position is called potential energy. The expression for the potential energy is given as,
[tex]PE = mgh[/tex]
here, g is the gravitational acceleration.
Solving as,
[tex]PE = 50 \times 9.8 \times 3.0\\\\PE = 1470 \;\rm J[/tex]
Thus, the potential energy of the can when it is at the top of the ladder is 1470 J.
(b)
And the kinetic energy is the energy of object by virtue of motion. And its expression is,
[tex]KE = \dfrac{1}{2} mv^{2}[/tex]
Here, v is the velocity of can.
Now, at 1 m height, its velocity is calculated as,
[tex]v^{2}=u^{2}+2gh\\\\v^{2}=0^{2}+2 \times 9.8 \times 1.0\\\\v = \sqrt{2 \times 9.8 \times 1} \\\\v=4.42 \;\rm m/s[/tex]
So, the kinetic energy is calculated as,
[tex]KE = \dfrac{1}{2} \times 50 \times (4.42)^{2}\\\\KE = 488.41 \;\rm J[/tex]
Thus, we can conclude that the kinetic energy of the can when it is 1.0 meter above the floor is 488.41 J.
Learn more about the kinetic energy here:
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5. He slept for eight hours. This sentence has
1. an intransitive verb
2. a transitive verb
3. an object
(it's english)
Answer:
an object (it's English
A student needs to put insulator tubing around the wires that run from the rotating loop to the light bulb. What type of material should the student use for insulator tubing?
Aluminum
Silver
Rubber
Copper
Answer:
rubber
Explanation: because its the only insulator
1) A wave has a speed of 40 m/sec and a wavelength of
12 meters. Calculate its frequency.
How would you set up the problem
Answer:hmm not sure on that one
Explanation:
natural magnet is known as _________
Answer:
a lodestone
Explanation:
a lodestone is a naturally magnetized piece of the mineral magnetite.
A student wearing frictionless in-line skates on a horizontal surface is pushed, starting from rest, by a friend with a constant force of 60 N. How far must the student be pushed, so that her final kinetic energy is 300J?
Answer:
Physics
Explanation:
Explanation:
We can use the Theorem of Work (W) and Kinetic Energy (K):
W=ΔK=Kf−Ki
it basically tells us that the work done on our system will show up as change in Kinetic Energy:
We know that the initial Kinetic Energy, Ki=12mv2i, is zero (starting from rest) while the final will be equal to 352J; Work will be force time displacement. so we get:
F⋅d=Ff
45d=352
and so:
d=35245=7.8≈8m
Answer:
d= 352/45=7.8≈ 8m
Explanation
We can use the Theorem of Work (W) and Kinetic Energy (K):
W=ΔK=k f - k i , it is basically tells us that the work done on our system will show up as change in Kinetic Energy:We know that the initial Kinetic Energy, ki =1/2 mv 2/i, is zero (starting from rest) while the final will be equal to 352J; Work will be force time displacement. so we get: F . d = Ff
45d= 352 and so d= 352/45=7.8 ≈ 8m