Answers
Answer:
F = 19.42 [N]
Explanation:
In order to solve this problem, we must first make a free body diagram and determine the forces acting on each body. In the attached image we can see the respective free body diagrams with the respective equilibrium equations.
In order to determine the value of the force, a static analysis must be performed on the block of 2.9 [kg] so that the value of the Force F can be determined.
A coefficient of friction value between the block of 2.9 [kg] and the ground must be taken into account in order to find the force F. a coefficient of friction value of 0.2 shall be taken
By the sum of forces on the Y-axis equal to zero, the value of the normal force N can be determined on the block of 2.9 [kg].
Then knowing that the frictional force is equal to the product of the normal force by the coefficient of friction, we can determine the frictional force.
By the sum of forces on the X-axis equal to zero, we can determine the value of the Force F, as seen in the equations posed in the attached image.
Note: the value of the Force F depends on the value of the coefficient of friction between surfaces.
Related Questions
Which statement describes an unanticipated impact of a technological
advance?
A. Continued research and development has produced white LED
lights that have gradually replaced traditional fluorescent and
incandescent bulbs.
O B. Artificial neural networks have been developed to allow doctors to
diagnose patients more quickly and accurately.
C. The development of antibiotics allowed people to be treated for
bacterial infections, but their overuse has led to strains of bacteria
that cannot be killed by available antibiotics.
D. The nonnative plant kudzu was brought to the United States in
order to curb erosion, but it destroys native plants.
Please help me
Answers
Answer: the development of antibiotics allowed people to be treated for bacterial infections, but their overuse had led to strains of bacteria that cannot be killed by available antibiotics
Explanation: I just took the test
One car travels 56 meters due east in 2.0 seconds, and a second car travels 84 meters due west in 3.0 seconds. During their periods of travel, the cars definitely had the same
They have narrowed down to two answer choices. Using your knowledge, help them decide which answer choice is correct. Explain your reasoning.
average speed
average velocity
Answers
Answer:
average speed
Explanation:
The directions were different, so the velocities could not be the same.
However, the magnitude of the velocity (speed) was 56/2 = 28 m/s for the first car, and 84/3 = 28 m/s for the second car. These average speeds are the same.
Marus traveled on a motorcylce distance of 1,298meters north to get to the nearest shopping center. He then turned back south and rode another 1,250 meters to meet his friend. What was his displacement?
Answers
Answer:
48 meters north
Explanation:
If you measure the distance between the point Marus started and the point where they stopped after traveling 1,250 meters back south, you get 48 meters. To make this a displacement quantity, you add 'north' to the end and get 48 meters north, considering this was the initial direction of the motorcycle.
The Laws of the Game are the rules for playing soccer.
A. True
B. False
Answers
Answer:
True
The answer is true but there is a character limit
Many scientists believe the solar system formed _______________ago, Question 1 options: over 4.5 billion years under 1 billion years over 500 billion years under 2.5 billion years
Answers
About 4.5 billion years ago, a dense cloud of interstellar gas and dust gave rise to our solar system.The supernova shockwave from a nearby exploding star, or supernova, may have caused the cloud to collapse.
The solar system is estimated to be 4.5 billion years old for a reason?
Radiometric dating methods have been used to determine the ages of more than 70 meteorites of various sorts.The findings indicate that the Solar System and meteorites both formed between 4.53 and 4.58 billion years ago.Scientists use meteorites, which were created during the early condensation of the solar nebula, to determine the age of the Solar System.Given that almost all meteorites have an age of 4.6 billion years (see the Canyon Diablo meteorite), the Solar System must be at least this ancient. Geologists and astronomers use a variety of dating methods to determine the age of the solar system and the Earth.We may determine the age of the Earth and the solar system using radiometric dating, which calculates the known rates of radioactive element decay. Around 4.5 billion years ago, when the solar system was still in its current configuration, the third planet from the Sun—Earth—was created when gravity drew spinning gas and dust in.Earth has a solid crust, a rocky mantle, and a central core, just like its sibling terrestrial planets. The solar nebula, a spinning disk-shaped cloud of gas, ice, and dust, is where the solar system originated 4.6 billion years ago.The solar nebula surrounding the protosun is where gas, ice, and dust that now make up the planets and other solar system junk were created. 4.6 billion years ago, the solar nebula, a cloud of gas and dust, gave rise to the Sun and the planets.The collapse of the solar nebula was most likely brought on by a shock wave from a nearby supernova explosion.The planets formed in a thin disk around the Sun, which formed in the center of the solar system.The Big Bang, an explosion of space, marked the beginning of our cosmos.Space expanded, the cosmos cooled, and the basic elements emerged from a very high density and temperature starting point.The first stars and galaxies were created as a result of the slow gathering of stuff by gravity.Over 4.6 billion years ago, a cloud of gas and dust was collapsing when our solar system was born.The sun and the planets developed over the following 600 million years, known as the Hadean Era by geologists, and Earth's oceans were likely generated by cometary impacts.To learn more about solar system refer
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A projectile is launched at a 30° angle relative to the ground. The projectile has an initial velocity of 15 m/s and travels through the air for 2 seconds.
What is the horizontal displacement (rounded to the nearest hundredth) in m?
Answers
Answer:
The horizontal displacement of the projectile is 25.98 m
Explanation:
Given;
angle of projection, θ = 30°
initial velocity of the projectile, v = 15 m/s
time of flight, t = 2 seconds
The horizontal displacement or range is given by;
R = vₓt
where;
vₓ is the horizontal component of the velocity
t is the time of flight
R = (15cos30)(2)
R = 25.981 m
R = 25.98 m (to the nearest hundredth)
Therefore, the horizontal displacement of the projectile is 25.98 m
Answer:
25.98
Explanation:
I just took the quiz and I hope you pass.
18°C =
-255 К
OOK
О18 К
291 К
Answers
Answer:
I think the answer for this question is 291 K
I have 22 electrons; how many protons and neutrons do I have?
Answers
Answer:
11 electrons & 11 neutrons
Explanation:
When listening to someone in trouble, you should be
Answers
A car is going 24.6miles per hour what is this in meters per second?
Answers
Answer:
11 m/s
Explanation:
1 mile= 1609.3 m
Hence, 24.6 miles= 39589.8 metres
1 hour=3600 seconds
Hence, [tex]\frac{24.6 miles}{hour} \\=\frac{39589.5 metres}{3600 seconds} \\=10.99[approx. 11 m/s}[/tex]
A example of a substance that has low pH is
A. Lemons, which have a pH of 2
B. Lemons, which have s pH of 12
C. Soap, which has a pH of 0
D. Lemons, which have a pH of 10
Answers
Answer:
lemons, which have a pH of 2 choice a
what role does animals play in carbon cycle? and how does carbon cycle flow through earth?
Answers
How is mass and weight differentiated?
Answers
Explanation:
The mass of an object is a measure of the object's inertial property, or the amount of matter it contains.
The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it.
A person jogs 10 miles, at a speed of 5 mi./h how long did it take ?
Answers
Answer:
2 hours!!! 5 miles an hour so 10 miles every two hours.
Answer:
We are given that it takes 1/2 an hour for the trip. This is a time:
t = 1/2
We are given that he averages 34 miles per hour. This is a rate:
r = 34
We are asked how few he has traveled. This is a distance. We use the d=rt equation:
d = rt
= (34)(1/2)
= 17
Markus lives 17 miles from work.
Explanation:
hope this will help you
HELP ME!!
Draw a force diagram of the forces acting on a person while sitting in a roller coaster
car as it accelerates up a hill. You may choose the type of restraint.
Answers
Answer:
Honey how can i draw you cant draw here
Explanation:
I wish i can help you
The brakes of an automobile can decelerate it at -4.7m/s^2. If the automobile is traveling at the rate of 31.0m/s How far will it travel after the brakes are applied before it stops?
Please help!!!
Answers
Answer:
204.5 m
Explanation:
a = v \ t
t = v \ a
t = 31 \ 4.7 = 6.6s
v = d \ t
d = v * t
d = 31 * 6.6
d= 204.5 meters
An overnight rainstorm has caused a major roadblock. Three massive rocks of mass m1=514 kg,m1=514 kg, m2=792 kg,m2=792 kg, and m3=322 kgm3=322 kg have blocked a busy road. The rocks are lined up from left to right in the order m1,m1, m2,m2, and m3.m3. The city calls a local contractor to use a bulldozer to clear the road. The bulldozer applies a constant force to m1m1 in order to slide the rocks off the road. Assuming the road is a flat, frictionless surface and the rocks are all in contact, what force, FA,FA, must be applied to m1m1 to slowly accelerate the group of rocks from the road at 0.250 m/s2?
Answers
Answer:
278.5 N
Explanation:
First, let us find the total mass to be moved. We add up all the given masses together.
The total mass to be moved, M
M = 514 + 792 + 322 = 1628 kg.
Next, we find the force that is applied to the blocks. Remember that F = ma, so
Force applied to all the blocks, F =
F = 1628 * 0.25 = 407 N
Now we find the force that was applied to only the first rock
F = 514 * 0.25 = 128.5 N
From this, we can get the remaining force that was applied to the last two rocks, by subtracting them from each other
F' = 407 - 128.5 = 278.5 N
Use Newton's Laws to describe how inertia, gravity, and air resistance affect sky divers as they fall,
open their parachutes, and reach terminal velocity.
Answers
Open and the reaction to that is that you’re body gets thrown and then finally stabilized. Hope this helped !
We already know from Newton's First Law that an object's inertia prevents it from changing velocity unless it experiences a net force, so once the forces are balanced, the skydiver continues at a constant velocity until they open their parachute.
How do Newton's laws apply to skydiving?According to Newton's Second Law, an object's acceleration equals the force of gravity divided by the object's mass. The skydiver first falls or accelerates down as a result of inertia and gravity. The sky diver falls at terminal velocity after opening the parachute, and the velocity becomes constant.The falling skydiver's net force and acceleration are both upward. A downward falling object would slow down if an upward net force was applied to it. As a result, the skydiver slows down. As the speed decreases, so does the amount of air resistance, until the skydiver reaches terminal velocity once more.To learn more about : Newton's Law
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The units of absolute permittivity of free space (εo) in S.I. are *
Answers
Answer:
farad per meter (F/m or F·m−1).
Explanation:
units of absolute permittivity of free space (εo) in S.I. are farad per meter (F/m or F·m−1).
A blimp is moving 10 m/s East when it begin so acceelation towards the East of 2 m/^2. how far will it go in 5 s?
A. 225m
B. 75m
C. 90m
D. 125m
Answers
Answer:c
Explanation:
explain the three scale of temperature and their interconversion from one scale to another how will you convert 50 degree Celsius into Fahrenheit
Answers
Answer:
Explanation:
the scales of temperature are kelvin,celsius and fahrenheit so to interconvert them use the formula:
K-273/100 = C/100 = F-32/180
Will get 15 points AND IF. YOU ANSWER. BEST OUT OF 2. I WILL give. brainliest
Question 1 : According to the Law of Inertia, an object at rest will stay (remain) at rest unless acted upon by a(n) ____ .
force
person
gravity alone
another object at rest
Question 2: The tendency of an object to resist a change in its motion is called ________.
gravity
motion
velocity
inertia
Questions 3: An object at rest has a velocity of ___.
-2.5 m/s north
2.5 m/s east
3.5 m/s east
0
Answers
Answer:
question 1: force
question 2: velocity or inertia
question 3: 0
Compute the total possible energy released from an annihilation of x-grams of anti-matter and the same quantity of matter, where x is the last two digits of your SS# or DL#. (20 points) –Use the famous Einstein’s formula for mass-energy equivalence •Compute the power output of this annihilation when the energy is released in x ns, where x is again the first two digits of your SS# or DL#. (10 points) •Compute how many cups of gasoline (8MJ) this energy corresponds to. (5 points) •Compute how many months of world electricity usage (3.6GJ/mo) this energy corresponds to. (5 points)
Answers
Answer:
i) 8.82 * 10^15 J
ii) 1.8 * 10^23 watts
iii) 1.102 * 10^9 number of cups
iv) 2.450 * 10^6 number of months
Explanation:
i)Total possible energy released
Mtotal = x + x
= 2x * 10 ^-3 kg
when we apply the famous Einstein's formula for mass-energy equivalence
E = Mtotal * c^2
c = speed of light in free space = 3 * 10^8 m/s^-1
x = 49 g
therefore the Total energy released
E = ( 2 * 49 * 10^-3 ) * ( 3* 10^8 ) ^2 = 8.82 * 10^15 J
ii) power output
x in ns = 49 * 10^-9 s
therefore energy released per sec = Total energy released / 49 * 10^-9
= (8.82 * 10^15 ) / ( 49 * 10^-9 ) = 1.8 * 10^23 J
hence power output = 1.8 * 10^23 J * s^-1 = 1.8 * 10^23 watts
iii) Calculate the number of cups
Total energy obtained in a cup = 8 MJ = 8* 10^6 J
number of cups required to match of the Total energy released
n = Total energy released / energy obtained in a cup
= ( 8.82 * 10^15 ) / ( 8 * 10^6 ) = 1.102 * 10^9 number of cups
iv) Calculate the number of months
n = Total energy released / energy obtained in a month
= (8.82 * 10^15 ) / ( 3.6 * 10^9) = 2.450 * 10^6 number of months
what kind of energy bombarded the seeds were included on the outside of the ISS?
Answers
Explanation:
ultraviolet radiation
Bombarded with energy
They stored the seeds in a single layer on the outside of the ISS behind a special kind of glass that let in ultraviolet radiation only at wavelengths between 110 and 400 nanometers
Your friend is flying a remote control jet in your yard, as seen in the diagram above. As it flies past you, you notice that the sound changes. You ask your friend to fly the jet
faster and fly it past you again. Which of the following changes would you expect as it flies towards you at a higher speed and why?
Answers
Answer: the pitch would be higher than it was at a lower speed because the air in front of the jet is compressed
10) Allen was curious about dog interaction at the dog park. He wondered if big dogs liked to play with big dogs and if little dogs liked to play with little dogs. After gathering information through research, he followed the scientific method by stating a ____________. This educated guess refers back to the original questions and is stated in such a manner that the results can be measured. A) experiment B) hypothesis C) problem D) procedure
Answers
Answer: B) hypothesis
Explanation:
Answer: B) Hypothesis
Explanation:
I got it right
Two blocks A and B with mA = 1.7 kg and mB = 0.88 kg are connected by a string of negligible mass. They rest on a frictionless horizontal surface. You pull on block A with a horizontal force of 7.9 N. (a) Find the magnitude of the acceleration (in m/s2) of the blocks. m/s2 (b) Determine the tension (in N) in the string connecting the two blocks. N (c) How will the tension in the string be affected if mA is increased? increase decrease remain the same
Answers
Answer:
A) 3.062 m/s2
B) 2.6946 N
C)
If ma is increased, acceleration will decrease if the applied force remains fixed
Explanation:
Ma =1.7 kg ( Block A )
Mb = 0.88 kg ( Block B )
Force applied = 7.9 N
a) Calculate the magnitude of acceleration of blocks
F = mass * acceleration
acceleration = Force / mass
mass = ( 1.7 + 0.88 ) = 2.58 kg
Force = 7.9 N
Therefore acceleration = 7.9 / 2.58 = 3.062 N/kg = 3.062 m/s2
B) Tension in the string
Tension in string can be calculated using the relationship below considering the first block
F - T = ma * A
A = 3.062 m/s2
ma = 1.7 kg
F = 7.9 N
Hence Tension (T) = F - ma * A
= 7.9 - ( 1.7 * 3.062)
= 7.9 - 5.2054 = 2.6946 N
C) If mA is increased, acceleration will decrease if the applied force remains fixed
A ship with an initial speed of 6.23 m/s approaches a dock that is 255 m
away. If the ship accelerates uniformly and comes to rest in 82 s, what is
its acceleration?
Answers
Answer:
a = 0.0761 [m/s^2]
Explanation:
This problem can be solved using kinematics equations, and by means of the following equation:
[tex]x=x_{0} +v_{0}*t-(\frac{1}{2} ) *a*t^{2}[/tex]
where:
Xo = initial location = 0
x = final location = 255 [m]
Vo = initial velocity = 6.23 [m/s]
t = time = 82 [s]
a = aceleration [m/s^2]
Since the ship slows down to rest, the last expression of the equation will be taken with a negative sign
255 = 0 + (6.23*82) - (0.5*a*82^2)
255 - (6.23*82) = - 3362*a
a = 0.0761 [m/s^2]
A bowling ball is dropped on a moon from the height of 14 m. The acceleration of gravity on the moon is 4 m/s2. Determine the time it took for the ball to crash at the surface. Round your answer to the nearest whole number.
b. 1 s
c. 4 s
d. 3 s
Answers
Answer:
4sec
Explanation:
Since we know the initial velocity=0, acceleration = -4; and the displacemnt =14, we use the equation d = vi • t + ½ • a • t2. So, just plug in the values and solve for t in this case it's 4 sec
A body is said to be in freefall when it moves solely under the influence of gravity.
The time it took for the ball to crash at the surface = 3 sec.
What do you mean by the free fall?A body is said to be in freefall when it moves solely under the influence of gravity. The ball's motion will be accelerated by an external force acting on it. This free-fall acceleration is also known as gravity acceleration.Free fall is a type of motion in which gravity is the only force acting on an object. Objects that are said to be in free fall do not encounter significant air resistance; they fall solely under the influence of gravity.acceleration of gravity on the moon is 4 m/s^2.
the height of 14 m.
The formula for free fall:
[tex]h= \frac{1}{2}gt^2[/tex]
t^2 = 2h /g = 2 x 14 /4 = 7
t = [tex]\sqrt{7} = 2.65[/tex] sec ≅ 3 sec.
The time it took for the ball to crash at the surface = 3 sec.
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A stretched catapult has potential energy
Answers
Answer:
No
Explanation:
The potential energy is associated with bodies that are above a reference point, at that reference point the value of potential energy is taken as zero. For example, if an object with a mass M is in a tower that is 140 meters high, its potential energy is defined as the product of the mass of the object by gravity and by the height at which the object is measured from the reference point.
Ep =m*g*h
When talking about elastic objects such as springs or elastic fibers, it is usually understood that there is an elastic potential energy associated with the constant of the spring. This can be calculated using the following equation:
[tex]U_{elas}=\frac{1}{2} *k*(Dx)^{2}[/tex]
where:
k = elastic constant of the elastic material [N/m]
Dx = distance stretched or compressed of the elastic material [m]
U = elastic energy [Joules]
So, there are differents between the elastic potential energy and the potential energy
