what is the formula of kinetic and potential energy
hey its haris
Answer:
Explanation:
potential energy = mgh
kinetic energy = 1/2mv²
Your friend tells you That there is no gravity in the space shuttle, which orbits 400 km (250 miles) above the Earth.
Do you agree or disagree? Explain
Answer:
Yes. Space is somewhat voidless. Space has no atmosphere, just planets, stars, and dark matter. Space can be said to be special. Space never ends. Gravity would cause an object to fall down. However, since space never ends, an object could continue moving forever.
At an altitude 400 km (250 miles) above the Earth, gravity is nearly 90 % as strong as on the surface of the earth.
What is the gravity of the earth?The gravity of Earth can be described as the net acceleration that is imparted to objects due to the combined effect of gravitation and centrifugal force. It can be defined as a vector quantity, whose direction coincides with a plumb bob and strength or magnitude.
In SI units gravitational acceleration is expressed in meters per second squared or equivalently in newtons per kilogram. Near Earth's surface, the gravity acceleration is approximately 9.81 m/s², ignoring the effects of air resistance.
The gravity of the earth decreases with altitude rises above the Earth's surface because of the greater distance from the Earth's center. At an altitude of 400 kilometers equivalent to an orbit of the ISS, gravity is nearly 90% as strong as at the Earth's surface.
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PLEASE HELP!!!
What reasons could possible make honeysuckle considered as invasive and not endangered?
Answer:
it grows fast, spreads faster and kills off smaller native plants
Explanation:
honeysuckle spreads very quickly and blooms multiple times a year, spreading seeds and growing in more spots. everytime it does so, it cuts off other smaller native plants from the sunshine and kills them off
How does the us constitution protect democratic ideals?
Answer: These ideas, that all men are created equal and that government is based on the consent of the governed, became the foundation for the US political ideal of popular sovereignty: that the government exists to serve the people, who elect representatives to express their will.
Explanation: Hope this helped! <3
Which image shows a situation where conduction occurs?
A box full of pieces of metal.
A woman holds a steaming mug.
A woman holds a frying pan above a stove while stirring.
Answer: A woman holds a steaming mug
Explanation:
Just did it
PLEASE HELP!
A 1500 kg car moves forward with 30 kg • m/s of
momentum. What is its velocity?
Select One:
a: -1470 m/s
b: 0.02 m/s
c: -50 m/s
d: 45,000 m/s
Answer: b
Explanation:
p=mv
p=30
m=1500
rearrange to find v
(30)=(1500)(v)
v= 30/1500
v = 0.02 m/s
Elsa runs 100m. She takes 20s to run this distance. What is Elsa's average speed?
Answer:
Average speed = 5 m/s
Explanation:
Given the following data;
Distance = 100m
Time = 20 secs
To find the average speed;
Speed = distance/time
Substituting into the formula, we have;
Speed = 100/20
Speed = 5m/s
Therefore, Elsa's average speed is 5 meters per seconds.
What do you hope to learn from participating in the activity you selected?
Answer:
I hope to learn the basic moves and stances of boxing. I understand that I won't be boxing with another person, but that’s OK. These exercises seem like a good starting point. I really want to understand how to put together combinations. I’ve seen professional boxers throw combinations on TV, but their hands move so quickly that I can’t catch the finer details of the sport. Maybe this will be an opportunity for me to find out more.
Explanation:
What is the difference between the law of gravity and the theory of gravity?
Answer:
In the language of science, a theory is an explanation of why and how things happen. For gravity, we use Einstein's Theory of General Relativity to explain why things fall. ...While laws rarely change, theories change frequently as new evidence is discoevered.
how much water makes up earth in percentages? thx?
Answer:
71%
Explanation:
A 0.40 kg soccer ball has 20 J of kinetic energy. How fast is it moving?
Which is an example of a projectile?
An arrow stored in a quiver
A trapeze artist hanging from a swing
A bullet loaded into a gun's chamber
A child jumping off of a swing set
Answer: A child jumping off of a swing set
Explanation: A projectile is any object thrown into the air, so the child is the only thing in the air thats moving.
Rutherford tracked the motion of tiny, positively charged particles shot through a thin sheet of gold foil. Some particles traveled in a straight line and some were deflected at different angles.
The question is incomplete, the complete question is;
Rutherford tracked the motion of tiny, positively charged particles shot through a thin sheet of gold foil. Some particles traveled in a straight line and some were deflected at different angles. Which statement best describes what Rutherford concluded from the motion of the particles? Some particles traveled through empty spaces between atoms and some particles were deflected by electrons. Some particles traveled through empty parts of the atom and some particles were deflected by electrons. Some particles traveled through empty spaces between atoms and some particles were deflected by small areas of high-density positive charge in atoms. Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.
Answer:
Some particles traveled through empty parts of the atom and some particles were deflected by small areas of high-density positive charge in atoms.
Explanation:
Rutherford first proposed the nuclear model of the atom after his landmark experiment.
In this experiment, alpha particles from a source was focused on a thin gold foil. Some of the particles passed through empty spaces within the atom but were deflected at different angles by a small area of high-density positive charge within an atom which Rutherford later called the atomic nucleus.
Hence the answer above.
How much energy (in kWh) can you get from a 72 cell solar panel in one year?
When potential energy decreases, kinetic energy
Answer:
Kinetic energy increase
Answer:
increases
Explanation:
A car moving 20 m/s accelerates to pass
a truck. Five seconds later the car is
moving 30 m/s. What is the acceleration
of the car?
A. 5 m/s
B. -5 m/s
C. -2 m/s
D. 2 m/s
Gooooo
You and a friend each apply 500 N of force to move a cement block 50 cm. How much work was done on the cement block?
Answer:
W = 500 J
Explanation:
Work is defined by
W = F . x
if we develop the dot product
W = F x cos θ
where is the angle between the force and the displacement, in this case the angle is zero, so cos 0 = 1
W = F x
indicate that each person applies a force of 500 N, so the total force is
F = 1000 N
let's reduce the distance to the SI system
x = 50 cm = 0.50 m
let's calculate
W = 1000 0.50
W = 500 J
what is SI unit of speed
Answer:
m/s
Explanation:
The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour.
m/s
which is also written as
ms-¹
The above mentioned symbols are said as 'meter per second'
hope it helps!
part of the plant that isresponsible for the transport of water from the roots to the leaves
Answer:
if you mean *responsible* for the transport of water from the roots to leaves is Xylem
SOMEONE HELP ME!!!!!!!
calculate the kinetic energy of car of mass 150kg moving with velocity of 30km/h. what will be the kinetic energy when it's velocity is doubled and then tripled?
Answer:
The correct answer is -
1. 67500 J
Explanation:
The formula for KE is
K. E. = 1/ 2 *m v ^2
So input the values we know:
K . E. = 1/2 ⋅*150 *30 ^2
K . E. = 150 * 900 /2
K . E . = 67500
K . E. = 67500
If the velocity is double then;
use 2v in the formula
K. E. = ( 1/ 2 )*m(2 v) ^2
= (1/2)*4m v ^2
it is four times to original Kinetic energy, and similarly if tripled then, it will be 9 times to original.
If a wave has a wavelength of 10 m and a speed of 2.5×108 m/s (this is 250000000 m/s) what is the frequency of the wave?
Answer:
The wavelength result is 3 m. Most common velocities: Light in vacuum (air) = 300,000 km/s. Light in water = 225,000 km/s. Sound in air = 340 m/s. Sound
Explanation:
the answer is 3m
What's the name of the compound Cal2?
Answer:
The correct answer is calcium iodide.
Explanation:
Hope this helped Mark BRAINLIEST!!!
The compound with the chemical formula CaI₂ is called calcium iodide.
A compound is a substance formed when two or more elements chemically combine in specific proportions. It is characterized by a distinct chemical composition and properties that differ from the elements it is composed of. Compounds are held together by chemical bonds, which can be either ionic or covalent, depending on the nature of the elements involved.
Calcium Iodide (CaI₂):
Calcium iodide is an ionic compound composed of the elements calcium (Ca) and iodine (I). In this compound, calcium, which is a metal, donates two electrons to iodine, a non-metal, resulting in the formation of a calcium ion (Ca²⁺) and two iodide ions (I⁻). The ions are held together by electrostatic forces of attraction, forming a crystal lattice structure.
Calcium iodide is a white, crystalline solid that is highly soluble in water. It is commonly used in various applications, including as a catalyst in organic reactions, a source of iodine for nutritional supplements, and in the synthesis of pharmaceuticals.
Therefore, The correct answer is Calcium Iodide.
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Two magnets are attracting each other. One magnet is big and strong; the other is small and weak. The big magnet attracts the small magnet with:
Answer:
magnetism and dipole-dipole interaction
Explanation:
Two magnets are attracting each other, one magnet is big and strong, the other is small and weak, the big magnet attracts the small magnet with a stronger force, and the attraction depends on the size of the magnet.
What is the significance of the magnet and magnetic fields?The attraction between two magnets varies, and that depends upon several factors such as the strength of the force of attraction, which determines the usefulness and functionality of magnets, for example, in industrial settings, strong magnets are often used to lift heavy loads, etc.
Hence, two magnets are attracting each other, one magnet is big and strong, the other is small and weak, the big magnet attracts the small magnet with a stronger force, and the attraction depends on the size of the magnet.
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Describe 3 physical properties of this object (color, state of matter, shape, size, hardness, etc)
Answer: The color is orange, the state of matter is liquid
Explanation:
Explain what ionisation is and why it is dangerous
Ionisation: the loss or gain of an electron
It is dangerous because cells that have been ionised can either die, or can mutate incorrectly, which might cause cancer.
What method is used when you try several different solutions to see what
works?
A. Trial and error
B. Stages
C. Heuristic
D. Rational
Answer:
A
Explanation:
Trial and error is basically trying something, if it works, great. If it does not work, try another way.
Answer:
A. Trial and error
Explanation:
The other user is correct.
Explain how air exerts a pressure
air exert a pressure take a glass and put the water on it and small piece a paper and glass take downword and observe it so tha air exert pressure
A student drops a feather and rock at the same time from Mrs. Taylor's
window. If air resistance wasn't a factor, what should she observe? *
Answer:the rock is heaver and gravity pulls it down while the feather floats for a while and then reaches the ground
Explanation:i dont know if this is the right answer or not
If an owl produces two pellets every 24 hours and each pellet contains the remains of 3 prey, how much does it eat in a week? A month?
The owl eats 42 prey in a week and 180 prey in a month.
To calculate how much the owl eats in a week and a month, we need to determine the number of prey consumed in each time period.
In a week:
The owl produces two pellets every 24 hours. So, in one day, it consumes 2 * 3 = 6 prey (since each pellet contains the remains of 3 prey).
In a week (7 days), the owl consumes 6 * 7 = 42 prey.
In a month:
Assuming a month has 30 days (though some months have 31 days or 28/29 days), we can calculate the number of prey consumed in a month.
In a day: 6 prey
In a month (30 days): 6 * 30 = 180 prey.
Hence, the owl eats 42 prey in a week and 180 prey in a month.
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number of atoms of each element Sulfur dioxide?
Answer:
Element Symbol # of Atoms
Oxygen O 2
Sulfur S 1
Explanation: