What is the gravitational potential energy of the tennis ball at position A?
Will give brainliest!
Answers
In other words:
KE = Ug
(1/2)mv^2 = mgh
The “m” variable cancels out on either side:
(1/2)v^2 = gh
(1/2)(5)^2 = (9.8)h
h = 1.28 m
Therefore, since Ug = mgh:
(0.058)(9.8)(1.28) = 0.72 J
Related Questions
Which movement will require the greatest amount of work to be done?
A a force of 10N moving an object a distance of 3.0m
B a force of 10N moving an object a distance of 5.0m
C a force of 15N moving an object a distance of 3.0m
a force of 15N moving an object a distance of 5.0m
D
A
B
Ос
Answers
Answer:
it's d)a force of 15N moving an object a distance of 5.0m pls mark me brainlist.
work = force*displacement
Option D has the greatest force (15N) and greatest displacement (5.0m), making its work the greatest.
According to Newton’s second law of motion, which object will require the most force in order to change its motion?
A.
The one with the greatest mass and fastest speed
B.
The one with the least mass and greatest speed
C.
The one with the greatest mass and lowest speed
D.
The one with the least mass and slowest speed
Answers
Answer:
A. The one with the greatest mass and fastest speed
Explanation:
Newton's Second Law of Motion
F ∝ ma F ∝ m(v - u)F ∝ mv - muF ∝ ΔPSo, as per the equation the force required to be applied is directly proportional to the change in momentum.
Therefore, we can understand two things :-
More mass = more force requiredFaster speed = more force requiredThe correct option is A.
what is the results of a loop of wire turning between two permanent magnets in a generator?
A. the permanent magnets have a current flowing through them.
B. the current in the loop of wire stops flowing.
C. the loop of wire has a current flowing through it
D. energy from the crank transforms into mechanical energy.
Answers
C. The loop of wire has a current flowing through it.
Answer:
c
Explanation:
a pex
how does acceleration due to gravity vary with latitude
Answers
cause of the shape of the earth
Explanation:
As the earth is an oblate spheroid, its radius near the equator is more than its radius near poles. Since for a source mass, the acceleration due to gravity is inversely proportional to the square of the radius of the earth, it varies with latitude due to the shape of the earth.
Calculate kinetic energy in joules of 1500 kg of a car moving 18m/s
Answers
Answer:
240,000 J
Explanation:
KE = 1/2mv² = 1/2 (1500kg)(18m/s)² = 240,000 J
What would happen if a needle hit the earth at the speed of light.
Answers
Answer:
The earth would be destroyed as we know it.
Explanation:
There's actually a utube vid about that.
Answer:
I think that the best question I've heard today
Explanation:
lol I think it would do catastrophic damage
If a star is found directly above the sun on the h-r diagram, what can you conclude about its size?.
Answers
Answer:
It is larger than the Sun.
Explanation:
Brainliest pls
:3
Ariana is heating a beaker of water. She notices that the water at the bottom
of the beaker is warmer than the water at the top. Which type of thermal
energy transfer will eventually make the temperature of the water at the top
and bottom the same?
O A. Translation
O B. Radiation
C. Conduction
O D. Convection
Answers
Answer: the answer is D (convection)
Answer:
D.Convection
Explanation:
in 2d kinematics what does “above horizontal” mean for angles i found from vectors?
Answers
Answer:
Explanation:
140m
Explanation:
The velocity must be broken down into x (horizontal) and y (vertical) components. We can use the y component to find how high the object gets. To find vertical velocity, vy, use vy=vosinθ.
vy=(75ms)sin45o=53ms
Next we find how long it takes to reach the top of its trajectory using vf=vo+at.
0ms=53ms+(−10ms2)t
t = 5.3s
Finally, find how high the object goes with d=vot+12at2.
d=(53ms)5.3s+12(−10ms2)(5.3s)2=140m
What is the difference between an object with a constant accleration and a constant velocity?
a. There is no difference between constant velocity and constant acceleration.
b. If an object has a constant velocity it will not have an acceleration- the velocity does not change. A constant acceleration means an objects velocity will increase or decrease by the same amount in each interval of time.
c. If an object has a constant acceleration it will not have a velocity. A constant velocitty means an object will increase or decrease displacement by the same amount in each interval of time
d. If an object has a constant acceleration on a velocity vs time graph the slope of the line will = zero.
Answers
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.
can u figure it out from there but if anything i think it is C
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.
can u figure it out from there but if anything i think it is C
How are motion and acceleration alike? How are they different?
Answers
Answer:
Motion is the action of moving, and acceleration is the action of moving faster or increasing speed. I guess you could say they are both in a state of motion or moving.
Explanation:
If the car has a mass of 1000kg what is the cars weight
Answers
Answer:
2204.62 pounds
Explanation:
How much force is needed to accelerate a 62 kg skier at 3 m/sec2?
Answers
Answer:
The answer is 186 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question
mass = 62 kg
acceleration = 3 m/s²
We have the final answer as
force = 62 × 3
We have the final answer as
186 NHope this helps you
A force is applied to a box to move it to the right across the kitchen floor what forces are being used?
Answers
Explanation: yes
Answer:
The static "frictional force" and the "kinetic friction" will act on the box.
Heating one kg of water from 353K to 354K
Answers
Answer:
Explanation:
How much energy does it take to heat 1 kg of water?
The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C. Lead will warm up and cool down fastest because it doesn't take much energy to change its temperature.
If you slid down Splash Mountain you would eventually come to a big pool at the end. Which one of Newton's Laws is this?
Answers
Answer:
Gravity
Explanation:
Answer:
law of gravity
Explanation:
i think
10.0 kg cannonball is thrown with a 7.5 m/s^2 acceleration. What is its force? *
Answers
Answer:
I think you mean what was the force applied on the cannonball, right? Well, that would be 75 N(newtons).
Explanation:
F = ma(force = mass x acceleration). Plus in the values it would be...
F = m(10.0 kg) x a(7.5 m/s^2), or 75 kg/s^2/75 N(newtons). Easy math.
A place with a tropical climate would most likely be located (1 point)
a. near the equator
b. at high altitudes
c. near the poles
d. in the middle of a continent
Answers
I think its a
I hope its right if it is sub to me Bearonic
What is the formula of gravity force with its meaning
Answers
Answer:
he formula for the gravitational force includes the gravitational constant, which has a value . The unit of the gravitational force is Newtons (N). Fg = gravitational force between two objects ( ) G = gravitational constant ( ) m1 = mass of the first object (kg)
Explanation:
brainlist ?
how does the gravity of earth affect the moon?
(for science)
Answers
Answer:
The motion of the Moon is affected by the gravity of the Sun AND the Earth. The Moon's gravity pulls on the Earth and makes the tides rise and fall every day.
Explanation:
As the Moon passes over the ocean, there is a swell in the sea level. The Earth's gravitational force accelerates objects when they fall.
Gregg Reid of Atlanta, Georgia, built a motorcycle that is over 4.5 m
long and has a mass of 235 kg. The force that holds Reid and his motor
cycle in a circular path with a radius 25.0 m is 1850 N. What is Reid’s
tangential speed? Assume Reid’s mass is 72 kg.
Answers
With Georgia's motorcycle at over 4.5 m long and having a mass of 235 kg, Reid’s tangential speed is mathematically given as
vt=12.4m/s
What is Reid’s tangential speed?Generally, the equation for the Conservation of momentum is mathematically given as
mn=m1+m2
Therefore
mn=235+72
mn=307
Therefore
Fc=mn*a
THerefore
[tex]vt=\sqrt{\frac{rFc}{mn}}\\\\vt=\sqrt{\frac{25*1850}{307}}[/tex]
vt=12.4m/s
In conclusion, The tangential speed is
vt=12.4m/s
Read more about Speed
https://brainly.com/question/4931057
What is the relationship between speed and kinetic energy?
Answers
Explanation:
In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.
In which direction does the electric field point at a position directly east of a
positive charge?
• A. West
• B. South
•C. North
• D. East
Anser- EAST AP-EX
Answers
Answer:
D. East That's my correct answerWhich explanation is based on scientific evidence?
Answers
Answer:
Scientific evidence is evidence that serves to either support or counter a scientific theory or hypothesis. Such evidence is expected to be empirical evidence and interpretable in accordance with scientific method.
Explanations which are not based on mere observations or intuitions and clearly based on reported evidences and experiments are called scientific evidence.
What are scientific evidences ?Although scientists frequently utilize evidence in other ways, such as when applying ideas to real-world issues, scientific evidence is evidence that helps to either support or refute a scientific theory or hypothesis. Such proof is anticipated to be empirical and interpretable using scientific techniques.
The requirements for scientific evidence vary depending on the area of study, but they are often based on the outcomes of statistical analysis and the quality of scientific controls.
Scientific theories and laws as well as intuitional predictions have limitations to gather information from a new system. How ever scientific evidences provide more accurate data.
Find more on scientific evidences :
https://brainly.com/question/24378643
#SPJ2
How does decreasing the distance between the two objects affect the gravitational force?
Answers
Answer:
Decreasing the distance between the two objects affect the gravitational force by strengthening it.
Explanation:
Gravity is stronger when the distance is shorter.
A magnetic field is created ____________.
a. when a compass is placed next to a wire.
b. when an electric current flows through a wire.
c. when wire is wrapped around an iron core.
d. when wire is twisted into a loop.
Answers
Answer: B
Explanation:
Magnetic fields are created due to charges in motion. Current by definition is the amount of charge flowing over time. Therefore, the answer is B, when an electric current flows through a wire.
Answer:
b. when an electric current flows through a wire
Explanation:
Hans Oersted discovered about two hundred years ago that when the electric current flowed through a wire a magnetic field was created.
(*) Sorry for my late answer but I hope this helps others that are looking for this.
I got 100% ;)
If two skaters standing still push against each other, the speed of the first is the same as the speed of the second, and in the opposite direction ONLY if both people have the same mass.
True or False
Answers
Answer:
True!
Explanation:
F = ma (force = mass times acceleration)
The force on each skater will be the same because of Newton's 3rd law...
F (1st skater) = F (2nd skater)
ma (1st skater) = ma (2nd skater)
If the skaters have different masses, they WILL have a different acceleration. Feel free to ask questions if needed.
A wave has a frequency of 6 Hz, how long is the period?
A- 12
B- .17
C- 6
D- 36
Answers
Answer:
B- 0.17
Explanation:
F = 1/T
T = 1/F = 1/6 = 0.16666666 = 0.17
An ant walks 8 squares to the East then walks 8 squares to the South then turns and walks 12 squares to the West and finally 18 squares to the North. What was the displacement of the ant?
Answers
Answer:
the ant is 4 squares west and 10 squares north.
Explanation: you just subtract north with south and east with west and the direction is gonna be where the bigger number is.
During a spring tide, what is arrangement of the moon, the sun and the earth?.
Answers
Explanation:
Spring tides generally occur twice a month—during new and full moons, when the Earth, Sun, and Moon line up in a row. In this arrangement, the gravities of the Sun and Moon work together and have the strongest pull on Earth. This produces the largest difference between high and low tide.
Spring Tides
During full moon or new moon phases, the gravitational forces of the Sun and Moon are maximized, producing very large ranges of tidal highs and lows called spring tides