Answer:
The Sun transforms nuclear energy into heat and light energy.
Our bodies convert chemical energy in our food into mechanical energy for us to move.
An electric fan transforms electrical energy into kinetic energy.
What is the Kinetic Energy of a 120 kg object that is moving with a velocity of 15 m/s
Answer:
Kinetic Energy:120 x 15=1800
Explanation:
Answer:
13500J
Explanation:
Kinetic energy = (1/2×120)kg × (15m/s)^2
KE = 60kg × 225 (m/s)^2 = 13500J
A pressure cooker has a mass of 1.5 kg and temperature of 30°C. The specific heat
capacity of the alloy from which the pressure cooker is made up of is 1000/kg
What will be its temperature when 7.5 *10') of heat is supplied to it?
Answer:
hjd
Explanation:
HELPPP PLEASE URGENT
yo pls help me I'm desperate lowkey
Look at the diagram below. Which wave effect is being shown?
Enter your answer
Answer:
Where is the diagram????
Answer:
reflection
Explanation:
Write two characteristics of an educated society
Answer:
Different and better?
Explanation:
i dont think that helps lol
An educated person has the ability to think clearly and independently and has good judgement.
What is Education?Education is defined as purposeful activity directed towards achieving some objective, such as the dissemination of knowledge or the promotion of skills and character traits, whose aims include the development of understanding, rationality, kindness and honesty.
There are three main types of education which are as follows:
Formal, Informal and Non-formal.
The specialty of education is that it is pre-determined and pre-planned. It is regular and spatial i.e. time bound and regulated by the institutional. Proper education improves people's understanding of the world around them which make them less susceptible to the influence of others
Thus, an educated person has the ability to think clearly and independently and has good judgement.
Learn more about Education, here:
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6. Compare Which of the
following can carry the
most current?
a. 9-V battery
b. 220-V electrical outlet
c. 12-V battery
d. 110-V electrical outlet
14) What is the velocity of a wave 5.35 x 10 cm long with a frequency of 16kHz
Answer:
wavelength= 5.35×10cm=0.535m
f= 16000hz
v= wavelength × f= 0.535×16000=8560m/sec
*Urgent*
(Part 1)
A merry-go-round rotates at the rate of 0.4 rev/s with an 99 kg man standing at a point 2.5 m from the axis of rotation. What is the new angular speed when the man walks to a point 1 m from the center? Consider the merry-go-round is a solid 73 kg cylinder of radius of 2.5 m. Answer in units of rad/s.
(Part 2)
What is the change in kinetic energy due to this movement? Answer in units of J.
Answer:
6.5 rad/s
11.695 kJ
Explanation:
Using the principle of conservation of momentum, we have
L1 = L2 and
I1w1 = I2w2, with I being the moment of inertia and w being the angular velocity.
w1 = 0.4 rev/s = 0.4 * 2π = 2.51 rad/s
Moment of Inertia, I = ½MR² + mr²
I1 = ½ * 73 * 2.5² +99 * 2.5²
I1 = 73 * 3.125 + 99 * 6.25
I1 = 228.125 + 618.75
I1 = 846.875 kgm²
The man has been said to have walked 1 m away from his position, so then
I2 = ½ * 73 * 2.5² + 99 * 1²
I2 = 228.125 + 99
I2 = 327.125 kgm²
From the formula stated above,
w2 = I1w1 / I2
w2 = (846.875 * 2.51) / 327.125
w2 = 2125.65725 / 327.125 rad/s
w2 = 6.5 rad/s
2
K = Iw²
K = 846.875 * 2.51²
K = 2125.65725 J
K'= Iw²
K' = 327.125 * 6.5²
K' = 13821.03125 J
Change in energy is given as, K' - K, so that
Energy, E = 13821.03125 - 2125.65725
Energy, E = 11.695 kJ
pls help me i will name brainliest
Answer:
a for the first one b for the second
What is the kinetic energy of a 0.500 kg toy car moving at a state of 1.50 m/s
Answer:0.563
Explanation:
The kinetic energy produced in a toy car is equal to 0.563 J.
What is the kinetic energy and potential energy?The energy exhibited by a moving body because of its motion is said to be its kinetic energy. Work should be done which can change the kinetic energy of a moving object.
The kinetic energy of a moving object can be determined from the formula mentioned below:
K.E. = ½mv² where ‘m’ and ‘v’ is the mass, velocity of the object.
Potential Energy (P.E.)is energy that is stored in an object due to its position and can be expressed as P.E = mgh where h, m, and g are the height, mass, and gravitational acceleration respectively.
Given, the mass of the toy car =, m = 0.500 Kg
The velocity of the toy car, v = 80 m/s
The kinetic energy = (1/2)× 0.500 ×(1.50)²
K.E. = 0.563 J
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Why is it safer to collide with a soft cushion than a hard surface?
Answer:
Impulse is force multiplied by time; and together, the product must be 1 unit. A collision with soft ground will result in the 1 unit of impulse by a larger time and a smaller force (compared to the small time and a large force for the hard floor).
A 20 kg cart moving at 4 m/s has how much momentum?
40 kg*m/s
40 kg*m/s
5 kg*m/s
5 kg*m/s
80 kg*m/s
Answer:
We conclude that the required momentum is 80 kgm/s.
Explanation:
Given
Mass m = 20 kgVelocity v = 4 m/sTo determine
The momentum p = ?
Important Tip:
The momentum of an object is the product of mass and velocity.We can determine the momentum using the formula
[tex]p = mv[/tex]
where
p is the momentumm is the massv is the velocitynow substituting m = 20 and v = 4 using the equation
[tex]p = mv[/tex]
[tex]p = (20) (4)[/tex]
[tex]p = 80[/tex] kg m/s
Therefore, we conclude that the required momentum is 80 kgm/s.
The momentum of the moving cart is 80kgm/s.
HOW TO CALCULATE MOMENTUM:
The momentum of a body can be calculated by multiplying the mass of that body by its velocity. That is;Momentum (p) = mass (m) × velocity (v)
According to this question, a 20kg cart moving at 4 m/s will have a momentum as follows:Momentum (p) = 20kg × 4m/s
Momentum (p) = 80kg*m/s.
Therefore, the momentum of the moving cart is 80kgm/s.Learn more at: https://brainly.com/question/17173143?referrer=searchResults
can you give me an example about radiation
Explanation:
A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles.
Answer: The energy from the sun is one great example of radiation. The sun emits light in a broad range of wavelengths which all contain energy. These waves are also discussed in the climate section for energy balance. The waves are emitted from the sun and travel through space and hit the earth and other planets.
EXTRA EXAMPLES: heat from a stove burner.
visible light from a candle.
x-rays from an x-ray machine.
alpha particles emitted from the radioactive decay of uranium.
sound waves from your stereo.
microwaves from a microwave oven.
electromagnetic radiation from your cell phone.
need physics help
ASAP please!
Answer:
D
Explanation:
RE (8
10 ms
1. What is the length of the liquid column in a barometer tube that would support an atmospheric pressure of
10,200 Nm2 if the density of the liquid is 2,600 kgm
1. Why are the outer planets called “gas planets?”
Answer:
They are also called the gas planets because they consist mainly of hydrogen, or the giant planets because of their size. These planets usually have complicated system of many moons and often even rings of ice and/or dust. There are four Jovian planets in the Solar System: Jupiter, Saturn, Uranus and Neptune.
Answer:
They are also called the gas planets because they consist mainly of hydrogen, or the giant planets because of their size. These planets usually have complicated system of many moons and often even rings of ice and/or dust. There are four Jovian planets in the Solar System: Jupiter, Saturn, Uranus and Neptune.
Explanation:
i hope this helps :)
Why is oxygen more chemically reactive than nitrogen?
Answer:
O2 has two more electrons compared to N2, with extra 2 electrons in the higher energy anti-bonding orbitals known as Diradical. These electrons have higher energy and are unpaired; therefore, O2 is more reactive
Explanation:
Answer:
O B. Oxygen needs to gain only 2 electrons to have a full octet, while nitrogen needs to gain 3.
Explanation:
The 25-mph zone is 150 yards long. How much time did the student save (in seconds) by speeding past the school
Answer:
Time = 12.27seconds
Explanation:
Given
Speed = 25miles/hour
Distance = 150 yards = 150(0.000568182)miles
Distance (in miles) = 0.0852273miles
Get the time
Speed = Distance/Time
Time = Distance/Speed
Time = 0.0852273/25
Time = 0.0034hours
Time = 0.0034 * 3600secs
Time = 12.27seconds
one the energy level diagram what is represented by the letter
a
b
c
Answer:
see below
Explanation:
B is the activation energy
A is the enthalpy change which is negative
C is the product of oxygen and ethanol which is carbon dioxide and water
hope this helps, please mark
what is CHA-CHA-CHA.
Answer:
The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo
What is the kinetic energy of a 2.1kg baseball and is traveling at 10 m/s?
Answer:
Explanation:
KE = 1/2mv^2
KE = 1/2(2.1)(10)^2
KE=105N
A horizontal pipe of diameter 0.933 m has a smooth constriction to a section of diameter 0.5598 m. The density of oil flowing in the
pipe is 821 kg/m3. If the pressure in the pipe is 7220 N/m2 and in the constricted section is 5415 N/m2, what is the rate at which oil is flowing?
Answer in units of m3/s.
Answer:s
Explanation:
which of the following has the most energy
the answer is blue light
24 How long does it take for the Earth to orbit the Sun?
A one day
B one week
C one month
D one year
Answer:
365 days
So The Final Answer is a Year
D is the answer
Explanation:
Answer:
C one month
Explanation:
The body weighing 8kg moves in a straight line uniformly accelerated with an acceleration of 3m / s? on a horizontal surface, under the action of force 60N.Find a) What is the friction force acting on the body) The coefficient of friction between the body and the surface where it moves
Answer:
pls explain this to me
Explanation:
I will not answer it
both answers are here in the picture
Being overweight or obese increases the risk of:
A. Diabetes
B. Heart disease
C. Stroke
D. All of the above.
theanswer is b.heart disease
What the energy transformation of an solar panel?
Answer:
The light energy from the sun causes the particles of the object to vibrate, transforming the light energy into heat energy. The heat energy is then radiated out as infrared light.
Explanation:
What do you understand if the frequency of a sound is 70 Hz?
Answer:
see below
Explanation:
frequency of a wave is the number of complete waves produced per second
so 70 Hz
means, that 70 complete waves are produced in one second,
hope this helps
Question 19 of 20
Planets A and B have the same size, mass, and direction of travel, but planet
A is traveling through space at half the speed of planet B. Which statement
correctly explains the weight you would experience on each planet?
A. You would weigh less on planet B because it is traveling twice as
fast as planet A.
B. You would weigh the same on both planets because your mass
would adjust depending on the planet's speed.
O C. You would weigh more on planet B because it is traveling twice as
fast as planet A.
D. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
SUBMIT
Answer:
D. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
Explanation:
The above statement is true due to the fact that, the weight and masses of the individual are same in direct comparison with the distance to their center of gravity. If the weight and masses are not same, then there would have been a significant difference between the two planet.