The total potential energy associated with the jumper at the end of his fall is 90,000 J.
The given parameters;
mass of the jumper, m = 51 kgheight of the bridge. h = 321 mspring constant of the cord, k = 32 N/mextension of the cord, x = 179 m - 104 m = 75 mThe total potential energy associated with the jumper at the end of his fall is calculated as follows;
U = ¹/₂kx² + mgΔh
where;
Δh is the change in height after falling
U = ¹/₂(32)(75)² + (51)(9.8)(0)
U = 90,000 J
Thus, the total potential energy associated with the jumper at the end of his fall is 90,000 J.
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Students take measurements of the force F0 , directed to the left, needed to hold the cart in place as well as the tension FT in the horizontal section of string. The students take three measurements for each force. Write down the sets of measurements that would provide the most precise determination of the correct relationship between the net force and the vector sum of the individual forces exerted on the cart?
The characteristics of the random error allow to find the result for the best value of the forces is:
Using the average values gives the best results.
In a measurement in physics some type of instrument is used, therefore all measurements have a precision due to the minimum amount that can be measured with the given instrument, the correct way to give the measurement is
m = m ± Δm
Where m is the measure and Δm the error due to the appreciation of the instrument.
In the measurement process there are variables type that can affect the results, in general they can be divided into two groups:
Systematic errors. They are problems that can be reduced or solved, in general they move the result to a specific side, for example: calibration problems, problems with the measurement method, etc. Random errors. They are variables that change during the measurement that cannot be foreseen or controlled, for example: temperature, humidity, deformation of bodies, etc.
Statistical methods can be applied to the random type of processes to reduce their effect on the final result, one of the most efficient way is to carry out the measurement several times and since the errors are random, if we obtain the average it must be closer to the true value.
[tex]m_{average} = \frac{\sum m_i}{n}[/tex]
Where m_i is each measurement and n is the number of measurements.
As a result it is
[tex]m = m_{average} \pm \sigma[/tex]
Where σ is the standard deviation.
It indicates that three measurements were made of each force, suppose that their values are: F₀₁, F₀₂ and F₀₃, and the best value is
[tex]F_{o \ average} = \frac{1}{3} (F_{o1} + F_{o2} + F_{o3} )[/tex]
For the tension of the body also takes three measurements.
[tex]F_{t \ averag} = \frac{1}{3} (F_{t1} + F_{t2} + F_{t3} )[/tex]
The best value of the net forces should be obtained using the average values.
[tex]\Delta F = F_{t \ average} - F_{o \ average}[/tex]
In conclusion using the characteristics of the random error we can find the result for the best value of the forces is:
Using the average values gives the best results.
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un paracadutista di massa 70kg scende per 100m a velocità costante.
quanta energia dissipa la resistenza del mezzo?
Answer:
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The distance from the Moon to Earth is 3.9 x 10^8 meters. What is the time required for a light ray to travel from the Moon to Earth?
Given what we know about the speed of light, we can confirm that a single ray of light would take 1.3 seconds to travel from the Moon to the Earth.
What is the Speed of Light?The speed of light, as the name suggests, is the speed at which light travels. It has a value of over 299 million meters per second.It is considered the fastest that it is possible to travel, nothing is known to travel faster than light.Therefore, since the Moon sits at a distance of 390 million meters from the Earth, and the fact that light travels at approximately 300 million meters per second, we can confirm that light from the moon takes roughly 1.3 seconds to reach Earth.
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Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to____
which aided in the formation of____
1. A.Increase
B. Decrease
C. Remain constant
2. A. Chloroplast
B. Roots
C. Soil
Increased levels of oxygen in the atmosphere due to photosynthesis caused rates of weathering to increases which aided in the formation of soil.
What is photosynthesis ?The process in which use of solar energy occur by plants, algae and certain bacteria convert them into chemical energy and starch called as photosynthesis.
Photosynthesis occur in chloroplast of the green plant which has its own DNA, genes and synthesize their own proteins.
photosynthetic Pigments are also involve in this process which is responsible for trapping sunlight present in chlorophyll pigment of chloroplast, like chlorophyll a, b and c.
some of the Bacteria have chlorophyll known as bacteriochlorophyll which can absorb infrared rays, Carotenoids which are yellow, orange or red-coloured pigments that absorb bluish-green light., Xanthophyll, Phycobilins.
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What is the total distance travelled? What is the displacement of the object?
Hi there!
Distance and displacement are different.
Distance is WITHOUT direction (scalar quantity)
Displacement TAKES INTO ACCOUNT direction (vector quantity), and is RELATIVE to the initial point.
DISTANCE:
Add up each segment's position:
0 - 2 sec: 0 m
2 - 5 sec: 10 - 4 = 6 m
5 - 6 sec: 0 m
6 - 8 sec: 10 - 2 = 8 m
8 - 9 sec: 0 m
9 - 12 sec: 5 - 2 = 3 m
Add up:
6 + 8 + 3 = 17 m
DISPLACEMENT:
To find displacement, simply look at the position at the final point (t = 12 sec) and compare to the initial position:
At t = 12: Position = 5 m
At t = 0: Position = 4 m
5 - 4 = 1 m
bro i need help omg.
Answer:
25.
Explanation:
5
because you're taking off the front number which is one
How much work is done on an object that is moved to acquire a displacement of 5 meters when 500 Newtons of force was exerted?
Answer:
2,500 Joules (J) or Newton Meter (N M)
Explanation:
Work = Force x Distance
The force in this equation is 500 Newtons. The distance (displacement) is 5 meters. Plug it into the equation above.
Work = 5m x 500n
Work = 2,500 Joules or Newton-Meters.
Therefore 2,500 Joules or Newton Meters of work is done on an object.
What is the definition of the word equality in your own words?
Answer:
Equality is the state of being equal in rights word and oportunities
Which of the following is same dimension quantity?
Work and Power
power and Potential energy
Potential energy and Pressure
Potential energy and Work
Answer:
Find the dimension of each and every quantity in all the options to check whether they are the same or not. We can use any one formula of each identity to find its dimension.
Complete step by step solution:
To find the dimension of a quantity, we can use any formula related to that quantity but we will use the easiest ones to save time.
Force-
from Newton’s law of motion,
F=maF=ma
Dimension of force =[M][LT−2]=[MLT−2]=[M][LT−2]=[MLT−2]
Work done-
W=F×sW=F×s
Dimension of work=[MLT−2][L]=[ML2T−2]=[MLT−2][L]=[ML2T−2]
Momentum-
p=mvp=mv
Dimension of momentum=[M][LT1]=[MLT−1]=[M][LT1]=[MLT−1]
Impulse-
I=F×tI=F×t
Dimension of impulse=[MLT−2][T]=[
Please guide me for uniform speed
Explanation:
uniform speed is just the consistent ratio of distance to time. it can a
so be thought as the speed of an object that does not change. an example is when a car moves at a speed of 60km/hrs without changing its speed. it keeps on moving at the same speed it started with
hope this becomes helpful
thanks
Common sports injury : ankle sprain , bone fracture , muscle strain , neck low back pain , shoulder pain. First aid needed
Answer:
m
Explanation:
I NEED THE RIGHT ANSWER ASAP IT NEEDS TO BE 100% ACCURATE NO LINKS !!!
What happens when multiple forces act on an object?
1: The object will move if the forces are unbalanced.
2: The object will always stay in place.
3: The object will always move.
4: The object will move if the forces are balanced.
Answer:
The object will move if forces are unbalanced
Everything in the physical universe is composed of matter which has mass and occupies space.
True or False?
PLEASE I NEED HELP FAST
Answer:
Its True
Explanation:
hope this helps
a boy cycles a distance of 960 m from home to school in 8 minutes. calculate his average speed for the journey
120m per minute
Explanation:If you take 960 and divide it by 8 you get 120 then you have the answer 120m per minute
Disilicon Trisulfide formula?
what do the astrometric, doppler, and transit methods share in common?
They all search for planets by measuring properties of a star rather than of the planets themselves. ... The size of the Doppler shift that we detect depends on the tilt of a planet's orbit.
Find the displacement the body in the following graph
Answer:
150
Explanation:
15m/s×10s= 15m/a
and that is the correct answer
_______is the force that keeps us all stuck to the surface of our planet.
Answer:
gravity
Explanation:
Which of the following occurs during the process of a liquid changing to a gas (boiling)?
The temperature increases.
The temperature remains the same.
The temperature decreases.
Answer:
the process that occurs when liquid changes to gas(boiling) is temperature increases
Answer:
The temperature increases
Explanation:
When a substance is converted from liquid state to gaseous state the particles get excited.The excitement raises the temperature of the substance1) ¿Cuáles son los
beneficios de lograr
niveles aceptables de
aptitud física
relacionada con las
habilidades?
Answer: Controlar el sobrepeso bajas grasa , te pone de buen homor , te da mas energia , Te ayuda mantenerte saludable y combatir enfermedades.
What are at least 3 examples of sublimation?
Sublimation is solid skipping the melting to a liquid stage andngoing staright to a solid.
Answer:
dry ice, air fresheners, polar evaporation, arsenic treatment
A new model BMW can start from rest and travel 400 m in 16 s. a. What is its acceleration during this time? [2] b. Calculate the final speed of the car. [2] c. How fast is this final speed in km/h?
Answer:
acceleration = 3v 125 m/s^
final speed= 50 m/s
final speed in km/hr = 180 km/hr
Explanation:
A new model BMW can start from rest and travel 400 m in 16 s.then the acceleration during this time would be 1.5625 m/s²
What are the three equations of motion?There are three equations of motion given by Newton
The first equation is given as follows
v = u + at
the second equation is given as follows
S = ut + 1/2×a×t²
the third equation is given as follows
v² - u² = 2×a×s
As given in the problem, A new model BMW can start from rest and travel 400 m in 16 s
distance covered by BMW = 400meters
initial velocity(u) = 0 m/s
time = 16 seconds
acceleration(a) =? m/s²
By using the second equation of motion given by newton
S = ut + 1/2at²
S = 400 m ,u= 0 m/s , and t =16seconds
400 = 0 + a16²
a =400/256
a = 1.5625 m/s²
For the final speed of the car
v= u + at
v = 0 + 1.5625×16
v = 25 m/s
For calculating the speed in km /h
v = 25 ×3600/1000
= 90 km/h
Thus, the acceleration during the first 16 s time would be 1.5625 m/s²
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A block of mass 1kg is placed on an inclined plane at an angle of 30° to the horizontal. Calculate the frictional force, normal reaction, the coefficient of the static friction
Question:
A block of mass 1kg is placed on an inclined plane at an angle of 30° to the horizontal. Calculate the frictional force, normal reaction, the coefficient of the static friction
Answer:
Break the mg force into components in the plane of the inclined plank. Now force acting parallel is mgsin37°. Perpendicular force is mgcos37° which is equal to normal force.
Now calculate max value of friction force which is 0.8*mg cos37°. Since its greater than pulling force mgsin37°, the body will be at rest and acceleration is zero.
Force applied by surface is vector sum of normal force and friction force acting.
How does acceleration experienced by different objects compare based on their masses?
I give Brainliest!
Answer:
The acceleration of an item is proportional to the net force exerted on it and inversely proportional to its mass. The acceleration of an item increases as the force pressing on it increases. The acceleration of an item decreases as the mass of the thing increases.
I'm not sure whether it is electrically, by radiation or by heating?
thanks:)
WILL MARK BRAINLIEST
why do we place window downward and ventilation upward?
Answer:
Doors, Windows & Ventilator is a part of building component which is allow to Air & light move & circulate inward & outward, with in door Human or any other material can be move inside or outside also. here types of doors & windows & ventilation are given with necessity of location, function etc.
Window ventilators are used for ensuring a supply of fresh air from the outside into the interior. They are used in rooms with natural ventilation, mechanical extract ventilation or hybrid ventilation. ... It automatically adjusts the inflow of fresh air depending on the level of relative humidity in the room.
Explanation:
diamond sparkles in dim light give reason
Answer: As the light moves through the diamond, it is scattered and fractured, creating the sparkle that diamonds are known for. This is the refraction. ... This refraction and dispersion also creates natural light and dark areas in the refracted light, depending on where the light hits along the planes of the diamond
Explanation:
5 cm ______ 500 mm.
a) Is greater than
b) Is less than
c) Is equal to
d) Measures a different quantity than
Answer:b
Explanation: each cm is 10mm so 5cm is 50mm that is less than 500mm
1. True or False: Most things in motion are accelerating, few things in real life move at a constant speed.
2. Slowing down is negative acceleration or ____________.
(I need Helpppppp pleaseee)
true or false sliding friction is stronger than static friction
Answer:False static friction helps us from not sliding it hold us.
Explanation: