High voltage is usually considered anything over about 600 volts.
In electrical systems, high voltage typically refers to voltages exceeding approximately 600 volts. This threshold is widely recognized as the point where extra precautions and specialized equipment are necessary to ensure safety. High voltage levels pose greater risks of electrical shock, arc flash hazards, and insulation breakdown. Therefore, strict safety measures, such as enhanced insulation, specialized personal protective equipment (PPE), and isolation techniques, are required when working with or around high-voltage systems. These measures aim to protect individuals from potential dangers associated with the increased electrical potential and mitigate the risks associated with high-voltage electrical energy.
learn more about voltage here:
https://brainly.com/question/32002804
#SPJ11
What matter does not take up the space in the container?
Answer:
I think it is solids
Explanation:
gaseous materials take any space in any container they are stored in the same is for liquids.
But solids can not take up the space of a contractor because they have a definite shape .
A man lowers an object of mass 12 kg from a height of 0.5m to the floor. What is the work done by him?
Answer:
Work = Force × distance
= m × g × d
= 12 × 9.8 × 0.5
= 58.8 N
If in the case , you need any help pleasee leg me know! [ you'll have to pay btw]
in order to qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on a track with a total length of 1600 m. if a particular car covers the first half of the track at an average speed of 230 km/h, what minimum average speed must it have in the second half of the event in order to qualify?
The minimum average speed must the car have in the second half of the event in order to qualify is 266.6km/hr.
Given the average speed of a race car (v) = 250km/hr
The total length of track (s) = 1600m = 1.6km
The initial average speed of car up to first half (v1) = 230km/h
Overall race duration divided by total average speed equals the amount of time that car can spend on the entire race.
total time(t) = 1.6/250 = 0.0064hrs
Let the time taken for first half = t1
such that t1 = 0.8/230 = 0.0034hr
The time left for second half = t2 = t - t1
t2 = 0.0064hrs - 0.0034hr = 0.003hr
The average speed for the second half of track = v2
then v2 = 0.8/t2 = 0.8/0.003 = 266.6km/hr
To learn more about speed click here https://brainly.com/question/28224010
#SPJ4
in the video, the temperature of the gas inside the fire piston increased because
In a fire piston, the temperature of the gas inside the piston increases due to adiabatic compression.
What is pressure?In physics, pressure is a measure of the force per unit area that a fluid (liquid or gas) exerts on its surroundings. It is defined as the force F acting perpendicular to a surface divided by the area A over which the force is distributed: pressure = F/A. The SI unit of pressure is the Pascal (Pa), which is defined as one Newton per square meter (N/m²). Other common units of pressure include pounds per square inch (psi), atmospheres (atm), and bar (bar). Pressure is an important concept in many areas of physics, including fluid mechanics, thermodynamics, and atmospheric science. It describes the behavior of fluids in pipes and channels, the operation of hydraulic systems, and the behavior of gases in sealed containers. The pressure of a fluid is related to its density and temperature, and can be influenced by factors such as gravity, elevation, and the motion of the fluid itself.
Here,
When the piston is rapidly pushed down into the cylinder, it compresses the gas inside the cylinder. This rapid compression causes the gas molecules to collide with each other more frequently and with greater force, which in turn increases the temperature of the gas.
Because the compression is adiabatic (i.e., no heat is allowed to enter or leave the system), the increase in temperature is due solely to the work done on the gas by the piston. This increase in temperature is known as adiabatic heating.
The fire piston is a simple but effective tool for starting a fire in the wilderness, and it demonstrates the principles of adiabatic compression and the relationship between pressure, volume, and temperature in a gas.
To know more about pressure,
https://brainly.com/question/30036175
#SPJ4
Please Help! A 200 g toy car is sliding along a frictionless track. At the top of a hill with a 0.50 m radius of curvature, the car experiences a normal force of 0.80 N. If it then descends 2.0 m to the end of the race track, what speed does it cross the finish line at?
The speed with which the car crosses the finish line is 6.26 m/s.
Speed of the ball after crossing the finish line
Apply the principle of conservation of energy and determine the speed of the ball.
K.E (bottom) = P.E (top)
¹/₂mv² = mgh
v² = 2gh
v = √2gh
where;
h is the height traveled by the carg is acceleration due to gravityv is the speed of the ball at bottom of the inclinev = √(2 x 9.8 x 2)
v = 6.26 m/s
Thus, the speed with which the car crosses the finish line is 6.26 m/s.
Learn more about speed of car here: https://brainly.com/question/111325
#SPJ1
12. The resistivity of a given wire of cross-sectional
area 0.7mm 4.9 x 10raised to the power of -4ohm mm. Calculate the
resistance of a 2ohm length of the wire
R = resistivity × (l/A), A = πr^2= πd^2/4
2 =( 4.9 × 10^ -4) * (l/π0.7^2/4)
make l the subject and calculate.
i assumed we are looking for the length if the wire.
an object moves in an xy - plane and has the following coordinates
The x component of the object's velocity is -8 m/s and the y component of the object's velocity at the given time is 7 m/s.
option B is the correct answer
What is the x and y components of the object's velocity?
The x and y components of the object's velocity at the given time is calculated as follows;
x = -3t³ - 5t²
y = 4t² + 3
where;'
x is the x componenty is the y componentt is the timeAt the given time, t = 1 second, the x and y components of the object's velocity is;
x = -3(1)³ - 5(1) = -8
y = 4(1)² + 3 = 7
Learn more about x and y components here: https://brainly.com/question/27996986
#SPJ1
a slingshot consists of a light leather cup attached between two springs. (a) if it takes a force of 32 n to stretch the springs 1.2 cm, what is their spring constant?
A light leather cup placed between two springs makes up a slingshot. The springs' spring constant is 2667N/m if it takes a force of 32N to stretch them 1.2 cm.
In accordance with Hook's law, the spring's restoring force is proportional to its extension. The term "proportionality constant" also refers to the stiffness or spring constant. The formula for the hook's law is F = kx. The restoring force, spring constant, and spring elongation are represented in this equation by F, k, and x, respectively. Effective spring constant ke = k1+k2 when two springs with spring constants k1, k2 are linked in series, and ke = k1k2/k1+k2 when the springs are connected in parallel.
Considering the force on the spring (F) = 32N
elongation in spring (x) = 1.2cm
spring constant (k) = F/x = 32/1.2= 2667N/m
To learn more about spring constant click here https://brainly.com/question/14159361
#SPJ4
a net force of 10 n moves a 3 kg object initially at rest a horizontal distance of 5 m directly in the direction the force is acting. what is the velocity in m/s of the object when the force has moved it 5 m?
When a net force of 10 N applied on a 3 kg object, after it has moved 5 m, the velocity of the object is 5.77 m/s
When a force F applied on m kg mass, then according to the Newton 2nd law of motion, the object will acquire an acceleration:
a = F/m
From the problem,
F = 10 N
m = 3 kg
Hence, the acceleration is:
a = 10/3 m/s²
The relation between the velocity, distance, and acceleration is:
v² = u² + 2.a.s
Where:
v = final velocity
u = initial velocity
s = distance
Since the object is initially at rest, hence u = 0
Therefore,
v² = 2.a.s
v² = 2.10/3 . 5
v² = 100/3
v = 5.77 m/s
Learn more about velocity here:
https://brainly.com/question/25905661
#SPJ4
Please help me! Ill give brainliest who helps me first!!!!
What is one difference between mixtures and pure substances?
A. mixtures can be physically separated
B. mixtures are made of one type of atom
C. pure substances have no chemical bonds
D. pure substances can be physically separated
what are 3 factors that cause seasons?
Answer:
Earth's Axis. Earth sits at a tilt of 22.5 degrees, also known as an axis. ...
Sunlight. Sunlight influences the seasons, particularly the sun's position and Earth's surface that reflects the light. ...
Elevation. ...
Wind Patterns. ...
Global Warming.
Explanation:
What is the resultant of the vectors shown?
Answer:
b
Explanation:
your welcome :)
which of the following are one of the most numerically dominant types of multicelled organisms on the planet
One of the most numerically dominant types of multicellular organisms on the planet are insects.
Insects, which belong to the class Insecta, have an estimated population of over 10 quintillion (10¹⁸) individuals worldwide. They are incredibly diverse and can be found in almost every habitat on Earth, ranging from tropical rainforests to deserts.
Insects play crucial roles in various ecosystems as pollinators, decomposers, and as a food source for other organisms. Their adaptability, high reproductive rates, and ability to exploit different niches have contributed to their numerical dominance.
Other examples of numerically dominant multicellular organisms include bacteria and phytoplankton, but insects generally have the greatest numerical representation.
To know more about the class Insecta refer here :
https://brainly.com/question/27549067#
#SPJ11
6. Find the acceleration of a 25kg crate man pushing it with 45N force?
Answer:
1.8m/s2
Explanation:
force=mass x acceleration
so,
acceleration=force /mass
=45/25
=1.8
7. Our state of mind affects how we observe our surroundings. What
mental state is the best for observing?
I
a) happy
c) nervous
b) relaxed d) excited
You have managed to get a vacation on the Moon where the gravitational field strength is 1.6 N/kg. Gleefully, you kick a ball of mass 1.25 kg with an initial velocity of < 12, 12, 0> m/s. There is a goal post you can use as an origin marker where you kicked the ball. What is the initial momentum of the ball?
The initial momentum of the ball is 15 Kgms-1.
What is momentum?In Physics, the term momentum is the product of mass and velocity. Momentum is a vector quantity. This implies that momentum possess both magnitude and direction.
Hence, we often write; p = mv
Where:
p = momentum
m = mass
v = velocity
The initial momentum therefore is;
p = 1.25 kg × 12 m/s = 15 Kgms-1
Learn more about momentum: https://brainly.com/question/904448
A force of 57.1 Newtons is applied for 0.977 meters; what work was done on the object?(1 point)
Responses
58.1 J
58.1 J
56.1 J
56.1 J
55.8 J
55.8 J
58.4 J
If A force of 57.1 N is applied for 0.977 meters then work is done on the object is 55.8J .
What is displacement?Displacement is defined as the shortest distance travelled by the object.
Displacement is defined to be the change in position of an object.
it has both magnitude and direction. it is a vector quantity.
What is force?An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
A spring balance can be used to calculate the Force. Newton is the SI unit of force (N).
mathematically, F=ma
where, F = force
m = mass and a = acceleration
Given,
force Applied is 57.1N .
displacement is 0.977 m.
According to the formula of work done,
work = force × displacement
Work = 57.1N×0.977m
Work = 55.78J
work = 55.8J
Hence, if A force of 57.1 N is applied for 0.977 meters then work is done on the object is 55.8J .
Learn more about force here :
brainly.com/question/23858054
#SPJ13
Answer:
55.8 J
Explanation:
You throw an apple out a window at a height of 6.0 meters upwards at an angle of 30 degrees
The motion of the apple can be understood by considering its vertical and horizontal components separately, allowing you to analyze the motion more effectively.
When you throw an apple out a window at a height of 6.0 meters upwards at an angle of 30 degrees, you can break down the motion into vertical and horizontal components.
1. Vertical Component:
The initial velocity in the vertical direction is determined by the upward throw. You can calculate the initial vertical velocity (Vy0) using the formula\(Vy0 = V * sin(θ)\), where V is the initial velocity and \(θ\)is the angle of projection. Given that the angle is 30 degrees, you can calculate the initial vertical velocity as follows:
Vy0 = V * sin(30)
2. Horizontal Component:
The initial velocity in the horizontal direction is determined by the angle of projection. Since the apple is thrown horizontally, the horizontal velocity is constant throughout the motion. You can calculate the initial horizontal velocity (Vx0) using the formula \(Vx0 = V * cos(θ),\)
where V is the initial velocity and \(θ\)is the angle of projection. Given that the angle is 30 degrees, you can calculate the initial horizontal velocity as follows:
Vx0 = V * cos(30)
By splitting the motion into vertical and horizontal components, you can analyze the motion separately and solve for various parameters. It's important to note that without knowing the initial velocity (V) or the time of flight, we can't determine the exact values for Vy0 and Vx0.
To know more about motion visit:
https://brainly.com/question/33317467
#SPJ11
what does the resulting slope imply about the relation between the heat lost by the warm water and the heat gained by the cold water?
The outcome was a slope that was upwards. Heat is received at a rate that is inversely proportional to the quantity of heat lost.
Describe heat using an example.Simply said, temperature is an object's heat or cold, and heat is the energy that moves from a hotter to a cooler thing. If you stick your thumb around a cup of coffee, it might feel warm to the touch, for instance. It is warm because the coffee's heat has been transmitted to the cup.
Why do we use the term "heat"?The transfer of energy at a high pace from an energy source to a medium or an object, or the opposite, is known as heat. These three techniques for transferring energy include radiation, conduction, and convection.
To know more about heat visit:
https://brainly.com/question/1429452
#SPJ4
mature salmon swim upstream, returning to spawn at their birthplace. during the arduous trip they leap vertically upward over waterfalls as high as 3.55 m. with what minimum speed (in m/s) must a salmon launch itself into the air to clear a 3.55-m waterfall?
The minimum speed required is 8.32 m/s.
The minimum speed of the salmon to launch itself into the air to clear a 3.55 m waterfall is 4.4 m/s, assuming there is no friction, air resistance or drag.
Let us assume the upstream having the initial velocity of the salmon when it reaches the waterfall is u. The height that it has to clear is h = 3.55 m.The final velocity of the salmon will be zero as it reaches the highest point and is about to fall back down. Also, acceleration is equal to that of gravity, which is -9.8 m/s².
Using kinematic equation s = ut + 1/2at²
Where s is the vertical distance travelled by the salmon, u is the initial velocity, a is acceleration, and t is the time for which the salmon is in the air. At the maximum height, the salmon's velocity will be zero. The salmon will have to travel twice the height of the waterfall to reach the maximum height. Therefore,
s = 2h
Substituting the values into the equation:
s = 2hu = ?
a = -9.8 m/s² ×s = ut + 1/2at²
2h = ut + 1/2at²
2(3.55) = u × t + 1/2(−9.8)t²
7.1 = ut − 4.9t² …(i)
The time it takes for the salmon to reach the maximum height, t is given by
v = u + at
0 = u + at
u = −at
Using equation (i),
7.1 = −at² − 4.9t²12.0t²
= 7.1t = √(7.1/12.0) = 0.381 s
Speed is given by:
v = u + at
v = −9.8 × 0.381 = −3.74 m/s
However, we require the minimum speed.
Therefore, the final speed must be equal to zero.
v² − u² = 2as
0 − u² = 2(−9.8) × (3.55)u² = 69.29
u = 8.32 m/s (upwards)
Therefore, the minimum speed required is 8.32 m/s.
Learn more anout speed and upstream at: https://brainly.com/question/17300107
#SPJ11
an object hangs motionless from a spring. think about the sum of the elastic potential energy of the spring and the gravitational potential energy of the object and earth (uspr ug). when the object is pulled down and held, this sum
Furthermore, as the spring is pushed down, the work done is stored as elastic potential energy. As a result, the total of elastic potential energy and gravitational potential energy will rise.
Does an elastic item have gravitational potential energy?If an item is above (or below) the zero height, it has gravitational potential energy. If an item is at a position different than the equilibrium position on an elastic medium, it has elastic potential energy.
Gravitational potential energy is energy contained in a vertically held item. Elastic potential energy is stored energy in things that can be stretched or squeezed.
The amount of the force necessary to modify the length of a spring-like item.
learn more about Gravitational potential energy refer
https://brainly.com/question/15896499
#SPJ4
what would happen if measurements such as mass,length,volume,or temperature weren't standardized and everyone made up their own units
Answer:
The world would have been blown up by now.
Explanation:
Hypothetically, lets say that someone gave Kim Jong boi a cup of coffee.
He gets mad at the "public servant" since it didn't contain 3 posafa43asdunds of sugar which makes him "big".
The public servant claims they added jfoaj4su38093 units of sugar, which is equivalent to 3 posafa43asdunds.
He gets mad and launches big cannons at Trump since he blames Boe Jiden.
Whenever an object exerts a force on another object, the second object exerts a force o the same amount, but in the ______ direction to that of the first object. (Fill in the blank)
Answer:
Opposite
Explanation:
Newton's third law of motion states that for every action there is an equal but opposite reaction.
Action-reaction force pairs make it possible for fishes to swim, birds to fly, cars to move etc,
For example, while driving down the road, a firefly strikes the windshield of a car (Action) and makes a quite obvious mess in front of the face of the driver (Reaction) i.e the firefly hit the car and the car hits the firefly.
The ultimately implies that, in every interaction, there is a pair of equal but opposite forces acting on the two interacting physical objects.
Hence, whenever any physical object exerts a force (action) on another physical object, the second physical object exerts a force (reaction) of the same amount, but acting in opposite direction to that of the first physical object.
Momentum, Impulse & Conservation of Momentum While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 12 m/s and the 8 ball was at rest. If both ball's have a mass of 0.12 kg and the cue ball's velocity after the collision is 4 m/s, what is the 8 ball's velocity?O 8 m/s O 1.5 m's O 2 m/sO 0-2 m/s
The 8 ball's velocity equals 2 m/s if both balls have a mass of 0.12 kg and the cue ball's velocity is 4 m/s after the collision.
When the ball strikes the white ball, what will happen to its momentum?
Momentum will remain constant regardless of the impact type. This implies that the overall momentum of all colliding objects prior to the collision will match the total momentum following the collision.
How is momentum conservation used in the game of pool?
All of the balls' momentum, which is the sum of their mass and velocity, must be preserved upon each contact. To put it another way, the overall momentum before and after the contact must be equal.
To know more about collision visit:
brainly.com/question/4322828
#SPJ4
The critical angle of diamond is 24 degrees. What is its refractive index?
Answer:
2.46
Explanation:
From the question given above, the following data were obtained:
Critical angle (C) = 24 °
Refractive index (n) =?
The refractive index of the diamond can be obtained by using the following formula as illustrated below:
Refractive index (n) = 1 / sine [critical angle (C)]
n = 1/sine C
n = 1 / sine 24 °
n = 1/0.4067
n = 2.46
Thus, the refractive index of the diamond is 2.46
A 37.0-turn solenoid of length 6.10 cm produces a magnetic field of magnitude 2.20 mt at its center. find the current in the solenoid.
To find the current in the solenoid, we can use the formula that relates the magnetic field (B), number of turns (N), current (I), and length (L) of the solenoid:
B = μ₀ * (N/L) * I
Where:
B is the magnetic field (2.20 mT = 2.20 × 10⁻³ T)
μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A)
N is the number of turns (37.0)
L is the length of the solenoid (6.10 cm = 6.10 × 10⁻² m)
I am the current (to be determined)
Rearranging the formula to solve for I:
I = (B * L) / (μ₀ * N)
Substituting the given values:
I = (2.20 × 10⁻³ T * 6.10 × 10⁻² m) / (4π × 10⁻⁷ T·m/A * 37.0)
Simplifying:
I = 4.70 A
Therefore, the current in the solenoid is approximately 4.70 Amperes.
Learn more about magnetic field here:
https://brainly.com/question/23096032
#SPJ11
3. A skydiver started his jump from the airplane. He fell 4.9 m in the 1st second, 14.7 m
in the 2nd second, 24,5 m in the 3rd second. How far did he fall between the 7th and the
10th seconds?
Arithmetic or geometric
The distance between the 7th and the tenth second is 29.4 m.
What is the progression?We know that we can have to formulate the information that has been given here so as to obtain a proper progression and this would help us to get the common difference of the progression that we are looking at.
Now we know that the progression would look something like; 4.9, 14.7, 24.5 ....
We can see that this is an arithmetic progression that has a common difference of 9.8.
U7 = a + (n - 1)d
a = first term
n = Number of terms
d = common difference
U7 = 4.9 + (7 - 1) 9.8
= 63.7
U10 = 4.9 + (10 - 1) 9.8
U10 = 93.1
Between the 7th and 10th seconds, we have;
93.1 - 63.7
= 29.4 m
Learn more about arithmetic progression:https://brainly.com/question/16947807
#SPJ1
what is convection?
what is radiation ?
what conduction?
--ⓒᴄᴏɴᴠᴇᴄᴛɪᴏɴ ᴏᴄᴄᴜʀꜱ ᴡʜᴇɴ ᴘᴀʀᴛɪᴄʟᴇꜱ ᴡɪᴛʜ ᴀ ʟᴏᴛ ᴏꜰ ʜᴇᴀᴛ ᴇɴᴇʀɢʏ ɪɴ ᴀ ʟɪQᴜɪᴅ ᴏʀ ɢᴀꜱ ᴍᴏᴠᴇ ᴀɴᴅ ᴛᴀᴋᴇ ᴛʜᴇ ᴘʟᴀᴄᴇ ᴏꜰ ᴘᴀʀᴛɪᴄʟᴇꜱ ᴡɪᴛʜ ʟᴇꜱꜱ ʜᴇᴀᴛ ᴇɴᴇʀɢʏ. ... ʟɪQᴜɪᴅꜱ ᴀɴᴅ ɢᴀꜱᴇꜱ ᴇxᴘᴀɴᴅ ᴡʜᴇɴ ᴛʜᴇʏ ᴀʀᴇ ʜᴇᴀᴛᴇᴅ. ᴛʜɪꜱ ɪꜱ ʙᴇᴄᴀᴜꜱᴇ ᴛʜᴇ ᴘᴀʀᴛɪᴄʟᴇꜱ ɪɴ ʟɪQᴜɪᴅꜱ ᴀɴᴅ ɢᴀꜱᴇꜱ ᴍᴏᴠᴇ ꜰᴀꜱᴛᴇʀ ᴡʜᴇɴ ᴛʜᴇʏ ᴀʀᴇ ʜᴇᴀᴛᴇᴅ ᴛʜᴀɴ ᴛʜᴇʏ ᴅᴏ ᴡʜᴇɴ ᴛʜᴇʏ ᴀʀᴇ ᴄᴏʟᴅ.
--Ⓡʀᴀᴅɪᴀᴛɪᴏɴ ɪꜱ ᴇɴᴇʀɢʏ ᴛʜᴀᴛ ᴄᴏᴍᴇꜱ ꜰʀᴏᴍ ᴀ ꜱᴏᴜʀᴄᴇ ᴀɴᴅ ᴛʀᴀᴠᴇʟꜱ ᴛʜʀᴏᴜɢʜ ꜱᴘᴀᴄᴇ ᴀɴᴅ ᴍᴀʏ ʙᴇ ᴀʙʟᴇ ᴛᴏ ᴘᴇɴᴇᴛʀᴀᴛᴇ ᴠᴀʀɪᴏᴜꜱ ᴍᴀᴛᴇʀɪᴀʟꜱ. ... ᴛʜᴇ ᴋɪɴᴅꜱ ᴏꜰ ʀᴀᴅɪᴀᴛɪᴏɴ ᴀʀᴇ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ (ʟɪᴋᴇ ʟɪɢʜᴛ) ᴀɴᴅ ᴘᴀʀᴛɪᴄᴜʟᴀᴛᴇ (ɪ.ᴇ., ᴍᴀꜱꜱ ɢɪᴠᴇɴ ᴏꜰꜰ ᴡɪᴛʜ ᴛʜᴇ ᴇɴᴇʀɢʏ ᴏꜰ ᴍᴏᴛɪᴏɴ). ɢᴀᴍᴍᴀ ʀᴀᴅɪᴀᴛɪᴏɴ ᴀɴᴅ x ʀᴀʏꜱ ᴀʀᴇ ᴇxᴀᴍᴘʟᴇꜱ ᴏꜰ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ
--Ⓒᴄᴏɴᴅᴜᴄᴛɪᴏɴ ɪꜱ ᴛʜᴇ ᴡᴀʏ ɪɴ ᴡʜɪᴄʜ ᴇɴᴇʀɢʏ ɪꜱ ᴛʀᴀɴꜱꜰᴇʀʀᴇᴅ (ᴛʜʀᴏᴜɢʜ ʜᴇᴀᴛɪɴɢ ʙʏ ᴄᴏɴᴛᴀᴄᴛ) ꜰʀᴏᴍ ᴀ ʜᴏᴛ ʙᴏᴅʏ ᴛᴏ ᴀ ᴄᴏᴏʟᴇʀ ᴏɴᴇ (ᴏʀ ꜰʀᴏᴍ ᴛʜᴇ ʜᴏᴛ ᴘᴀʀᴛ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴛᴏ ᴀ ᴄᴏᴏʟᴇʀ ᴘᴀʀᴛ).
The aeroplane lands at a speed of 80 m/s
After landing, the aeroplane takes 28 s to decelerate to a speed of 10 m/s
The mean resultant force on the aeroplane as it decelerates is 750 000 N
Calculate the mass of the aeroplane.
[5 marks]
The mass of the aeroplane is 300,000 kg.
What is Newton's second law of motion?It states that the force F is directly proportional to the acceleration a of the body and its mass.
The law is represented as
F =ma
where acceleration a = velocity change v / time interval t
Given is the aeroplane lands at a speed of 80 m/s. After landing, the aeroplane takes 28 s to decelerate to a speed of 10 m/s. The mean resultant force on the aeroplane as it decelerates is 750 000 N.
The force expression will be
F = mv/t
Substitute the values and we have
750000 = m x (80 -10)/ 28
750,000 = m x 2.5
m = 300,000 kg
Thus, the mass of the aeroplane is 300,000 kg.
Learn more about Newton's second law of motion.
https://brainly.com/question/13447525
#SPJ1
while a rock thrown upward at 50 degrees to the horizontal rises, neglecting air drag, its horizontal component of velocity remains unchanged. decreases. increases.
While a rock thrown upward at 50 degrees to the horizontal rises, neglecting air drag, its horizontal component of velocity remains unchanged.
The horizontal component of velocity refers to the velocity in the horizontal direction, which is perpendicular to the vertical direction of the rock's motion. Neglecting air drag means that no external force acts on the horizontal component of velocity. According to Newton's first law of motion, an object in motion will continue to move at a constant velocity in the absence of external forces.
In this case, as the rock rises vertically, its horizontal component of velocity remains unaffected by the vertical motion. The force of gravity acts vertically downward and does not affect the horizontal motion of the rock. Therefore, the horizontal component of velocity remains unchanged throughout the rock's upward trajectory.
Learn more about Velocity here: https://brainly.com/question/29519833
#SPJ11