At which point(s) does the ball have 25% potential energy and 75% kinetic energy?*
Answers
Answer:
hey
Explanation:
hey
Related Questions
Please help hurry. It’s time.
Answers
Answer: a
Explanation: Hope it helps
Answer:
A
Explanation:
I think its a because A would be heavier making it go down faster than B. its like when you drop a father compared to a ball, the feather is lighter so it will go down slower than the ball because it has more mass
PLS HELP, WILL MARK BRAINLIEST!!!
A bowling ball has a mass of 5kg and weight of 49 Newtons on Earth. Astronauts take it on a journey to the moon, Phobos (a moon of Mars) and Jupiter and measure the bowling ball’s weight. Put the locations in order from least weight to most weight for the bowling ball.
(1 Point)
Earth
Jupiter
The Moon
Phobos
Answers
Answer:the moon, earth, phobos,and jupiter
Explanation:i hope im right
HURRY PLEASE!!
The particles of solids are packed together tightly, so sound waves travel faster through solids than through liquids or gases. How do light waves differ from sound waves?
A. Light waves require a medium and travel fastest through liquids
B. Light waves require a medium, but travel fastest through a vacuum
C. Light waves do not require a medium, but travel fastest through solids
D.
Light waves do not require a medium and travel fastest when in a vacuum
Answers
Answer:
Hope it help you
Stayhomestaysafe
Plz mark my answer brainliest✍️✍️
Explanation:
Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.
Option b
REAL NAME - SHRESTH DUBEY
Explain: Light is a transverse, electromagnetic wave that can be seen by the typical human. The wave nature of light was first illustrated through experiments on diffraction and interference. Like all electromagnetic waves, light can travel through a vacuum.
Intensity during a cardiovascular endurance workout means..
A. How often the activity is performed
B. How long the activity is performed
C. How hard the activity is performed
D. Where the activity is performed
Answers
C
Explanation:
It means how hard the activity is performed.To improve cardio respiratory endurance, the frequency of the workout sessions should be: 5 to 7 sessions per week.
A student stands in a school hallway. A wall separates a classroom from
the student. The student in the hallway cannot see inside the classroom
but hears noises from within the classroom. Which of these best explains
why the student hears the noises but cannot see into the classroom?
Answers
Answer: sound waves are transmitted through the wall and visible light waves are reflected by the wall.
An inclined plane of length 12m is used to pull a load of 3000N to height of 3m by applying an effort of 1000N. Calculate its MA, VR and efficiency. Also, find the work done in the machine
Answers
Answer:
MA = 4
VR = 3
e = 0.75 or 75%
work = 12000 [J]
Explanation:
The mechanical advantage in an inclined plane is defined as the relationship between the length of the inclined plane and the height of the plane with respect to the ground.
MA = L/h
MA = 12/3 = 4
Now the real advantage can be calculated as the relationship between the weight of the body and the force being applied.
VR = W/F
VR = 3000/1000
VR = 3
Efficiency can be calculated as the relationship between the real mechanical advantage over the ideal mechanical advantage.
e = VR/MA
e = 3/4
e = 0.75 or 75%
The work is defined as the product of the force by the distance, therefore we have:
work = F*d
work = 1000*12
work = 12000 [J]
HELP HW!!!!! IF U CAN SOLVE ONE AT LEAST I WILL CROWN U BRAINLIEST ( I’m so bad at this plz helppp)
Answers
Answer:
Q = I * t = 2 Coulomb / sec * 1000 sec = 2000 Coulombs transferred
E (energy) = V * Q = I * t * 240 V
E = 240 J / Coul * 2000 Coul = 480,000 Joules
Next question:
Total voltage drop in circuit = 6.5 V + 4.5 V = 11 V
So the power supply must supply 11 V
Explain how the Sun's gravitational force affects Earth even though the Sun is 93 million miles away.
Answers
Answer:
Perfect distance away makes it suitable for life
Explanation:
The Sun's gravitational pull helps to control tides on earth and also to keep the earth in a curvilinear motion.
What is gravity?Gravity, or gravitation, is a natural phenomenon in which all entities with mass or energy are drawn to one another, including planets, stars, galaxies, and even light.
The gravitational pull of the sun continuously pulls the earth towards it, although because of the fast movement of the earth we never reach towards the sun instead we revolve around it.
Despite the fact that the sun's gravitational pull is neutralised by the movement of the earth in a curve, there is still some gravitational pull that exists which helps to control the tides on earth.
Thus, the Sun's gravitational pull helps to control tides on earth and also to keep the earth in a curvilinear motion.
Learn more about Gravity:
https://brainly.com/question/4014727
in a meter of 3 how many beats are in a measure also this is for music
Answers
Answer:
3 i think
Explanation:
hope this helps also Hiiii
You push a desk with 245 N, but the desk doesn't move due to its friction with the ground. What is the magnitude of the friction force felt by the desk?
Answers
If the desk doesn't move, then it's not accelerating.
If it's not accelerating, then the net force on it is zero.
If the net force on it is zero, then any forces on it are balanced.
If there are only two forces on it and they're balanced, then they have equal strengths, and they point in opposite directions.
So the friction on the desk must be equal to your 245N .
Make a claim about the time interval between lunar phases.
I will mark as BRAINLIEST ✨
just pls help ASAP
due by 4:00pm
plss
Answers
Answer:
The Lunar month is the time period for the moon to complete ONE revolution around Earth. SIDEREAL MONTH: 27.3 days SYNODIC MONTH: 29.5 days
Help plz I’m Cunfused !!
Answers
Explanation:
look up the coordinates or if they provide you with a map use that
Answer:
find each point in and draw a straight line until they touch and whatever is there is the country
A 30 kg mass sits on a level surface with a coefficient of friction of .2. What net force is necessary to accelerate it
at 3 m/s2?
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Answer:
Explanation:
Idk
What is the formula for impulse and momentum?
Answers
Answer: p = mv
Explanation: momentum(p) is equal to mass(m) and velocity(v).
A cannonball with a mass of 50 kilograms and a golf ball with a mass of 0. 8 kilograms are dropped in a vacuum from a height of 10 meters. Compare the acceleration of each object as they fall.
Answers
It's gonna take a huge amount of time and effort, and we're gonna spend a huge amount of money, to build a vacuum chamber big enough to do this experiment.
So when we're finally ready to try it, the cannonball and golf ball will make a kind of cute experiment, but let's make it really interesting. Let's ALSO try it with a feather, an apple, a watermelon, a tennis ball, a basketball, a coffeepot, a chair, an old computer, a set of dishes, a trombone, a bicycle, a math book, a TV set, a gallon of milk, a skateboard, a shotgun, a concrete block, a car, a waterbed, a schoolbus, a battleship, your dog, and my wife !
Drop every single one of them from a height of 10 meters.
Every single one of them accelerates at 9.8 m/s² as it falls, takes 1.429 seconds to reach the floor, and hits the floor at a speed of 14 m/s. The feather, the schoolbus, and my wife stay together all the way down.
The only way this doesn't happen is if ...
-- you do this experiment in some other place that's not Earth, or
-- you throw one of the objects and you don't just drop it, or
-- the vacuum chamber has a leak and some air gets into it.
Because that's how gravity works.
what happens to the wave length and frequency of a wave as it crosses a different medium and speeds
Answers
Answer: SEE EXPLANATION!
Explanation:
When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same.
I hope this helps you!
Which universal force acts only on the protons and neutrons in a nucleus? *
5 points
electric
gravitational
magnetic
strong nuclear
Option 5
Answers
Answer:
a strong nuclear force is a powerful force of attraction that acts only on the neutrons and protons in nucleus
so the answer is: STRONG NUCLEAR
1. A baseball is thrown horizontally at 45 m/s. The ball slows down at a rate of 5 m/s?
a. How long is the ball in the air before coming to rest?
b. How far did the ball travel in that time?
2. A car starts from rest and accelerates at 9.54 m/s? for 6.5 seconds.
a. How much distance was covered by the car?
b. What was the final velocity of the car?
3. An arrow leaves a bow with a speed of 42 m/s. Its velocity is reduced to 34 m/s by the time it
hits its target
a. What was the acceleration of the arrow?
b. How much distance did the arrow travel over if it were in the air for 2.4 seconds?
c. What was the average velocity of the arrow?
4. A ball starts from rest and rolls down a hill with a constant acceleration of 3.0 m/s?.
a. What is its speed at the end of 4.0 s?
b. How far did the ball move in that 4.0 s?
Answers
Answer:
Explanation:
a )
initial velocity u = 45 m/s
acceleration a = - 5 m/s²
final velocity v = 0
v = u - at
0 = 45 - 5 t
t = 9 s
b )
s = ut - 1/2 at²
= 45 x 9 - .5 x5x 9²
405 - 202.5
202.5 m
2 )
a )
s = ut + 1/2 a t²
u = 0
s = 1/2 at²
= .5 x 9.54 x 6.5²
= 201.5 m
b )
v = u + at
= 0 + 9.54 x 6.5
= 62.01 m / s
3
a )
acceleration = (v - u) / t
= (34 - 42) / 2.4
= - 3.33 m /s²
b )
v² = u² - 2 a s
34² = 42² - 2 x 3.33² s
s = 27.41 m
c )
Average velocity
Total displacement / time
= 27.41 / 2.4
= 11.42 m /s
4 )
a )
v = u + at
v = 0 + 3 x 4
= 12 m /s
b )
s = ut + 1/2 a t²
= o + .5 x 3 x 4²
= 24 m
An object dropped from rest and falls a distance of 80 m.
What is the objects displacement
Answers
Answer:
Δx = -80m
Explanation:
The object's displacement is -80m because it landed 80m below where it started.
What was the first iphone
Answers
Answer:=Phone 2G
Explanation:
Answer:
model=A1203
Explanation:
it was the first iPhone invented by apple sync
19. The particles in an object move very quickly and are spread apart. Then they move slower and get slower and get closer together but do not form regular and organized patterns. What change of state occured? How do you know?
Answers
Answer:
The transformation went from a gas to a solid which is a Deposition
Explanation:
Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.
The change of state that occurred was that the object went from gas to solid in a process of Deposition.
The properties of gas and solid:
Particles in gas move very quickly which leads to them being spread apart Particles in solids are quite slow and so are close togetherBased on the properties of the object before and after the change, we can infer that the object went from gas directly to solid. This process is called a deposition.
In conclusion, a deposition occurred with gas changing directly to solid.
Find out more at https://brainly.com/question/24651908.
Earth’s gravitational force
(1 Point)
Is the same strength, no matter where you are on Earth.
Does not affect objects orbiting the Earth.
Fluctuates or changes depending on your location on Earth.
Changes the mass of an object.
Answers
Does the mean molecular speed change as much as the temperature as the water heats up?
Answers
a motorcycle stunt driver rides his motorcycle off a small ledge that is 8.4m high his initial velocity as he rides off the ledge is 25m/s in the horizontal direction how long does it take before he lands on the ground. answer= 1.3 s
Answers
Answer:
1.3s
Explanation:
what is centripetal motion
Answers
Answer:
abhi ham logo KO madam ne Padaya nahi hai
1. A car is traveling at 36 m/s hits a tree and comes to rest in 0.05 seconds.
a. What is the acceleration of the car?
b. Airbags deploy in a car if the acceleration of a car exceeds -600 m/s^2 Will the airbags deploy?
Answers
Answer: a. -720m/s^2
b. Yes, airbags will deploy
Explanation:
The formula for acceleration is:
= (Final velocity - Initial velocity)/Time
Final velocity = 0m/s
Initial velocity = 36m/s
Time taken = 0.05s
= (Final velocity - Initial velocity)/Time
= (0 - 36)/0.05
= -36/0.05
= -720m/s^2.
Since it's negative, it shows that there was a deceleration.
2. Yes the airbag will deploy since the acceleration gotten is more than -600 m/s^2.
The modern periodic table is organized by:
atomic number
atomic mass
chemical name
chemical symbol
Answers
Karen has 50 cats, Gary has 14 fewer cats than Karen and Billy has 8 times more than Gary. How many cats does Billy have?
Answers
Answer:
The answer is:
14 x 8= 1.120
Answer:
288 cats
Explanation:
K = 50
G = 50 - 14 = 36
B = 36 x 8 = 288
Billy has 288 cats.
Please let me know if I'm incorrect!
Can you please help me it’s due at 11:59 please
Answers
Answer:
1 is summer, 2 is most likely winter,3 is most likely summer, and 4 is fall
Explanation:
What road would exert the least amount of friction on a car?
Answers
A road laid out on an air-hockey table, with a thin coat of ice on the table, and a little bit of oil or lard on top of the ice.
NOTE: The car couldn't actually GO anywhere on this road, because a car needs friction in order to move where you want it to. A car on THIS road would just go wherever the wind blew it.