One particle has a charge of 4.2 x 10-9 C, while another particle has a charge
of 1.10 x 10-9 C. If the two particles are separated by 0.005 m, what is the
electromagnetic force between them? The equation for Coulomb's law is
Fe = k992, and the constant, k, equals 9.00 x 109 Nm2/C2.
A. 8.31 x 10-6N
B. 1.66 x 10-5 N
C. 1.85 10-13 N
D. 1.66 10-3 N
Answers
Answer:
D
Explanation:
Answer:
The forces between the charges is \(1.66*10^{-3} N\)
Explanation:
Data given:
First charge \(q_{1} =4.2*10^{-9} C\)
Another charge \(q_{2} =1.1*10^{-9} C\)
Distance (r)= (0.005)m
Force(F)=?
It is based on Electrostatic force between two charges i.e. defined by Coulomb's law.
What is electrostatic force?The force acting between two static charges, is called electrostatic force.
What is Coulomb's law?The force acting between two charges is
(a) directly proportional to the product of charges F ∝ \(q_{1} q_{2}\)
(b) inversely proportional to the square of the separation. F ∝ \(\frac{1}{r^{2} }\)
From above;
\(F=k.\frac{q_{1} q_{2} }{r^{2} }\)
On putting values: -
\(F=1.66*10^{-3} N\)
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Related Questions
(20 points) What are wispy looking clouds, usually at high altitudes called?
stratus clouds
nimbus clouds
cirrus clouds
cumulus clouds
Answers
Answer:
the answer is c cirrus clouds
Explanation:
Using the star finder according to the instructions given in lab and those listed on the previous page, complete each of the following: 4) Which zodiacal constellations are visible in the western sky at 6 am on January 25 ? The star finder is a device that aids in locating celestial objects when viewing the sky. Its design enables an observer to determine valuable information such as rising time, setting time, position, etc. The instructor will provide details during the lab time, but some information requires additional emphasis: - When using the star finder for actually locating celestial objects for viewing, it must be held overhead, with the compass points on the star finder matching the compass points in reality. (You may have noticed that east and west are reversed when looking down on the star finder.) - The entire star field contained within the open ellipse on the star finder represents the sky for the time and date shown. The edges of the ellipse correspond to the observer's horizon. - East and west are not located at the midpoint along the elliptical horizon between south and north. Because of the distortion involved in trying to map a threedimensional hemisphere onto a flat page, the east and west cardinal points are located north along the ellipse from their respective midpoints. - The zenth is located directly overhead for all observers and the zenith never moves. To locate and fix the position of the zenith, tape both ends of a piece of string between N and S (or noon and midnight) on the star finder, across the entire visible sky. Use an ink pen to place a dot on the string midway between the northern and southern horizons. Do not remove the string. The dot is the zenith. (Notice, as the sky moves, the zenith remains stationary and directly overhead.) - The brass rivet, about which the entire star field rotates, is the celestial north pole. Polaris happens to be located at this position. (In the real sky, all stars seem to wheel or revolve around this point.) The star finder is a device that aids in locating celestial objects when viewing the sky. Its design enables an observer to determine valuable information such as rising time, setting time, position, etc. The instructor will provide details during the lab time, but some information requires additional emphasis: - When using the star finder for actually locating celestial objects for viewing, it must be held overhead, with the compass points on the star finder matching the compass points in reality. (You may have noticed that east and west are reversed when looking down on the star finder.) - The entire star field contained within the open ellipse on the star finder represents the sky for the time and date shown. The edges of the ellipse correspond to the observer's horizon. - East and west are not located at the midpoint along the elliptical horizon between south and north. Because of the distortion involved in trying to map a threedimensional hemisphere onto a flat page, the east and west cardinal points are located north along the ellipse from their respective midpoints. - The zenith is located directly overhead for all observers and the zenith never moves. To locate and fix the position of the zenith, tape both ends of a piece of string between N and S (or noon and midnight) on the star finder, across the entire visible sky. Use an ink pen to place a dot on the string midway between the northern and southern horizons. Do not remove the string. The dot is the zenith. (Notice, as the sky moves, the zenith remains stationary and directly overhead.) - The brass rivet, about which the entire star field rotates, is the celestial north pole. Polaris happens to be located at this position. (In the real sky, all stars seem to wheel or revolve around this point.)
Answers
To determine which zodiacal constellations are visible in the western sky at 6 am on January 25, refer to the star finder and locate the corresponding positions on the celestial map.
The star finder is a helpful tool for locating celestial objects and obtaining information about the night sky. To use the star finder effectively, it should be held overhead with the compass points aligned to match the actual compass points. Keep in mind that east and west may appear reversed when looking down at the star finder.
The star finder consists of an open ellipse representing the sky for a specific time and date. The edges of the ellipse correspond to the observer's horizon. East and west are not located at the midpoint along the elliptical horizon due to the distortion caused by representing a three-dimensional hemisphere on a flat page. The east and west cardinal points are positioned north along the ellipse from their respective midpoints.
Locating the zenith is essential, as it is directly overhead for all observers and remains stationary. To find the zenith, tape both ends of a string between the north and south points on the star finder, spanning the entire visible sky. Mark a dot on the string midway between the northern and southern horizons using an ink pen. This dot represents the zenith.
By using the star finder and aligning it with the correct date and time, you can identify the zodiacal constellations visible in the western sky at 6 am on January 25. Simply locate the corresponding constellations on the star finder and observe their positions in the western region of the celestial map.
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what is a common equation for the preparation of esters
Answers
Answer:
answere is very easy
answere is
Physical precipitation of gypsum due to evaporation of seawater produces which kind of sedimentary rock?
A. biochemical
B. chemical
C. clastic
D. organic
Answers
Physical precipitation of gypsum due to the evaporation of seawater produces a chemical kind of sedimentary rock.
What is evaporation?In contrast to the condenser, the evaporator absorbs heat from the compartment's air while converting refrigerant liquid to gas. Due to the reduced pressure and heat dissipation, the liquid refrigerant is much cooler than the fan air surrounding it when it reaches the evaporator.
Evaporites - shaped through evaporation of seawater or lake water. Produces halite (salt) and gypsum deposits through chemical precipitation because the awareness of solids will increase because of water loss through evaporation.
Evaporite rocks form when seawater or lake water dries up and precipitates gypsum (CaSO4·2H2O), halite (NaCl), or other minerals. Evaporites are chemical sedimentary rocks.
Precipitation of gypsum due to evaporation of seawater is a chemical type of sedimentary rock. The category is called evaporite, which forms after seawater dries.
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what happens to the mechanical energy of an apple as it falls from a tree?
Answers
Answer:
When the apple falls from the tree, it has some gravitational potential energy due to its height. Now, When it starts falling, the Gravitation Potential energy will starts converting into the Kinetic Energy. When the apple is about to strikes the ground, the Gravitational Potential energy have been converted into the Kinetic Energy.
Explanation:
The potential energy will be low when its kinetic energy is high and vice versa. But the mechanical energy remains conserved.
What is mechanical energy?Mechanical energy can be explained as the sum of kinetic energy and potential energy that can be used to do work. Mechanical energy can be described as the energy of a body due to its motion or position.
The total mechanical energy of a physical system is conserved as the energy can not be created or destroyed. The mechanical energy of a physical system can only be transformed from one form to another when the forces acting work are conservative in nature.
Each force is related to potential energy form and the energy changes between different kinds of potential energy and kinetic energy but the total energy remains constant.
The mechanical energy of the apple remains conserved. As the apple falls its potential energy is converted into kinetic energy.
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a 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. what is the linear displacement of the edge of the circular platform after 2.0 s?
Answers
A 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. The linear displacement of the edge of the circular platform after 2.0 s will be 80 m .
theta = omega * t + 1/2 * alpha * \(t^{2}\)
omega = angular velocity
alpha = angular acceleration
using equation
theta = omega * t + 1/2 * alpha * \(t^{2}\)
= 0 + 1/2 * 10 * 4 = 20 rad
linear displacement = radius * theta
= 4 * 20 = 80 m
A 4.0 m radius circular platform accelerates from rest at 10.0 rad/s2. The linear displacement of the edge of the circular platform after 2.0 s will be 80 m .
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2. The figure shows a horizontal pipe withsections with different cross-sectional areas.The cross-sectional area of the pipe at locationC is half that at A, and the cross-sectionalareas at A and D are the same. Water flows inthe pipe from left to right. Which of thefollowing correctly ranks the mass flow rate fin the four sections of pipe?
Answers
Given:
Cross-sectional area of the pipe at C is half that at A.
Cross-section area at A = Cross sectional area at D.
Water flows in from right to left.
Let's determine which of the following correctly ranks the mass flow rate in sections A, B, C, and D.
According to Bernoulli's principle:
Mass flow rate = density x volume of flow rate.
Where:
Volume of flow rate = (cross sectional area) x (velocity).
Now, to apply the volume flow rate in different sections of the pipe, we have:
Volume flow rate = A*V = constant.
The volume flow rate is constant, according to the equation of continuity.
Now, the equation of continuity is:
\(p_1A_1v_1=p_2A_2v_2\)This means the rate of mass flow in all sections will be equal.
Therefore, the correct ranking of the mass flow rate of the four sections are:
fA = fB = fC = fD
ANSWER: D.
\(f_A=f_B=f_C=f_D\)
4. how does the intensity of a linearly polarized electromagnetic wave relate to its electric field?
Answers
The intensity of a linearly polarized electromagnetic wave is directly proportional to the square of its electric field amplitude.
The electric field of a linearly polarized electromagnetic wave can be represented by a sine or cosine function, where the amplitude of the wave represents the maximum value of the electric field.
The intensity of the wave is proportional to the average power per unit area that is carried by the wave.
Mathematically, the intensity (I) of an electromagnetic wave is given by the formula:
I = (1/2)εcE0^2
where ε is the electric constant (approximately equal to 8.85 x 10^-12 F/m), c is the speed of light in a vacuum (approximately equal to 3.00 x 10^8 m/s), and E0 is the amplitude of the electric field.
From this formula, it is clear that the intensity of the wave is proportional to the square of the electric field amplitude.
Therefore, if the electric field amplitude of a linearly polarized electromagnetic wave is increased by a factor of 2, the intensity of the wave will increase by a factor of 4 (i.e., 2 squared).
Similarly, if the electric field amplitude is decreased by a factor of 2, the intensity of the wave will decrease by a factor of 4.
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Are
the vectors u=<-1,2> and V= <3, -17 perpendicular?
Answers
No, the vectors u = <-1, 2> and v = <3, -17> are not perpendicular.
To determine if two vectors are perpendicular, we can calculate their dot product. If the dot product is zero, the vectors are perpendicular. If the dot product is nonzero, the vectors are not perpendicular.
The dot product of two vectors u and v is given by:
u · v = u₁ * v₁ + u₂ * v₂
where u₁ and u₂ are the components of vector u, and v₁ and v₂ are the components of vector v.
Calculating the dot product of u = <-1, 2> and v = <3, -17>, we have:
u · v = (-1 * 3) + (2 * -17) = -3 - 34 = -37
Since the dot product is -37 and not zero, we can conclude that the vectors u and v are not perpendicular.
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what distinguishes the orbit of pluto from that of the eight major planets of the solar system?
Answers
Pluto's orbit is much more eccentric and inclined compared to the orbits of the eight major planets in the solar system. This means that Pluto's orbit is more elliptical and tilted relative to the plane of the solar system, while the orbits of the major planets are generally more circular and on the same plane.
First, Pluto's orbit is much more eccentric (elongated) than the orbits of the other planets. This means that its distance from the Sun varies more dramatically over the course of its orbit. While the other planets have nearly circular orbits, Pluto's orbit is more oval-shaped.
Second, Pluto's orbit is also more inclined (tilted) relative to the plane of the Solar System. The eight major planets all orbit in roughly the same plane, but Pluto's orbit is tilted at an angle of about 17 degrees. This means that it sometimes travels above and below the plane of the Solar System during its orbit.
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Mess Me and You will have nonsense Explain how this riddle relates to mutation in DNA
Answers
Nonsense mutations are those point mutations in the DNA where stop codons will appear before the time they should appear.
What are nonsense mutations?At the time of transcribing from DNA to RNA, the template needs to have both start and stop codons for the transcription to occur correctly, but sometimes mutations can occur that do not allow the protein to be produced correctly. This mutation can be permanent which causes damage to the formation of proteins.Sometimes mutations can be beneficial, allowing evolution and helping organisms to be better formed for a new environment.
It is the type of mutation in which a termination codon occurs before the time it should be, instead of giving a codon with a certain amino acid. Which gives a much shorter protein than it should be, giving a non-functional protein.
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Jose has two bar magnets. He pushes the ends of the two magnets together and then lets it go. The magnets move quickly apart. Which of the following statements best explains why this happens
A.The north poles of the two magnets are facing each other.
B.One magnet is a north pole & one magnet is a south pole.
C.The ends of the magnets repel each other but the centers attract. D.One magnet is storing energy & one magnet is releasing energy.
Answers
Answer:
A. like poles repel or push apart
Drag each tile to the correct box.
Arrange in the correct order the actions and reactions that occur when the
Federal Reserve uses the required reserve ratio in its expansionary
monetary policy
Hiles
ince
Households and businesses
take out more loans,
GDP increases
The money supply increases.
Banks have more money
to lend
Answers
Federal reserve decreases the required reserve ratio.
Banks have more money to lend
Money supply increases
Interest rates fall
Households and business take out more loans
Purchases and investments increases.
There are two types of monetary policies, Expansionary and Contractionary.
The government decides the monetary policy based on the economy of a country. The government will have expansionary monetary policy when it requires more money in the economy. Interest rates are lowered and money supply is increased. This results increase in Gross Domestic products of the country and the economy strengthens.
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Answer:
Below is the answer
Explanation:
a 500g soccer ball is kicked at 12 ms-1 towards the wall. it rebounds off the wall at 2 ms-1. calculate the change in momentum.
Answers
The negative sign indicates that the direction of the momentum has reversed due to the collision with the wall. Therefore, the change in momentum of the soccer ball is 5 kg m/s in the opposite direction of its initial velocity.
The change in momentum of an object is equal to the final momentum minus the initial momentum.
The momentum (p) of an object is given by the product of its mass (m) and velocity (v):
p = mv
Initially, the soccer ball has a momentum of:
\(p_1 = m_1v_1 =\) (0.5 kg)(12 m/s) = 6 kg m/s
After rebounding off the wall, the soccer ball has a velocity of 2 m/s. Therefore, the final momentum is:
\(p_1 = m_1v_1 =\) (0.5 kg)(2 m/s) = 1 kg m/s
The change in momentum is then:
Δp =\(p_1 = m_1v_1 =\)= 1 kg m/s - 6 kg m/s = -5 kg m/s
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Find the instantaneous rate of change of the position function y=f(t) in feet at the given time t in seconds. f(t)=3t−7,t=1
Find the instantaneous rate of change of the position function y=f(t) in feet at the given time t in seconds.
f(t)=3t−7,t=1
Answers
The instantaneous rate of change of the position function y=f(t) in feet at the given time t in seconds. f(t)=3t−7,t=1 is as follow:
The function is f(t) = 3t - 7 and t = 1.
Using the concept of derivatives, the instantaneous rate of change of the position function y = f(t) in feet at the given time t in seconds is given by;
f'(t) = lim (h → 0) [f(t + h) - f(t)]/h
Now, we have f(t) = 3t - 7 and t = 1.
Substitute t = 1 in the above formula to get the instantaneous rate of change of the position function.
f'(1) = lim (h → 0) [f(1 + h) - f(1)]/h
Using the given function f(t) = 3t - 7,f'(1)
= lim (h → 0) [f(1 + h) - f(1)]/h
= lim (h → 0) [3(1 + h) - 7 - (3(1) - 7)]/h
= lim (h → 0) [3h]/h= 3
Therefore, the instantaneous rate of change of the position function y = f(t) in feet at the given time t = 1 second is 3 feet per second.
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What is the change in gravitational potential energy of a 45 kg weight that is moved from 2 m to 18 m on earth? What is it on the moon (g = 1.6 m/s2)?
Answers
Answer:
to find the weight, use the following formula
F= m x g
in Earth---> 45 x 9.8= 441 N
in Moon---> 45 x 1.6= 72 N
Explanation:
I HOPE THIS HELPS!!! :)
The change in gravitational potential energy of a 45 kg weight that is moved from 2 m to 18 m on Earth and Moon are 7.056kJ and 1.152kJ respectively.
What is Gravitational Potential energy?
Gravitational potential energy is defined as the energy possessed by or acquired by an object due to a change in its position when it is present in a gravitational field. This can be said that gravitational potential energy is the energy which is related to the gravitational force or gravitation.
Gravitational potential energy is expressed as
U=m g h
Where, U = gravitational potential energy
m = mass
g = gravitational field
h = height
For above given example,
The change in gravitational potential energy for Earth
mass= 45kg
Difference in height \((H_2-H_1)\)= 18-2= 16m
g= \(9.8m/s^2\)
U= 45*16*9.8 = 7056J or 7.056kJ
The change in gravitational potential energy for Moon
mass= 45kg
Difference in height \((H_2-H_1)\)= 18-2= 16m
g= \(1.6m/s^2\)
U= 45*16* 1.6= 1152J or 1.152kJ
Thus, the change in gravitational potential energy of a 45 kg weight that is moved from 2 m to 18 m on Earth and Moon are 7.056kJ and 1.152kJ respectively.
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If one soccer ball is rolling to the right at 3 m/s and another soccer ball is rolling left with a speed of 5 m/s, how much momentum is there in this system before they collide with each other? Both have a mass of 1 KG
Answers
Answer:
Final momentum after a head on collision is -2kgm/
Explanation:
One ball moves to the right and the other moves opposite and momentum is a vector quantity so that considering the direction
Initial momenta are P₁=2x3=6kgm/s P₂=4x(-2)=-8kgm/s
Final momentum is the vector sum of P(final)= 6-8= -2 kgm/s
help meh pls- i lazy
Answers
Answer:
the first question is B, if not then its C
Explanation:
sorry if I am wrong
What cause sound seismic and electromagnetic waves to transmit energy through different mediums
Answers
Answer:
Explanation:
Sound, seismic, and electromagnetic waves transmit energy through different mediums due to the motion of particles in the medium.
Sound waves transmit energy through the vibration of particles in a solid, liquid, or gas. The energy is transferred from particle to particle as the wave travels through the medium.
Seismic waves are created by the sudden release of energy from earthquakes, volcanic eruptions, or other geological events. These waves travel through the Earth's solid mantle and crust, transmitting energy through the vibration of particles in the rock.
Electromagnetic waves are a type of wave that does not require a medium to travel through. They are created by the motion of charged particles, such as electrons, and can travel through a vacuum, such as space. Electromagnetic waves transfer energy through the oscillation of electric and magnetic fields.
Size of image is equal to size of object in convex lens, when object is placed:
(a) at F
(b) between F & O
(c) between F & 2F
(d) at 2F
Pls answer fast
Answers
Explanation:
the object should be placed at 2F
Answer:
at 2F
Explanation:
hope it will help you
A student driving home for the holidays starts at 7:00 AM to make the 700km trip, practically all of which is on nonurban interstate highways. If she wants to arrive home no later than 5:00 PM, what must be her minimum average speed?
Answers
The student must maintain a minimum average speed of 70 km/h to arrive home no later than 5:00 PM.
To determine the minimum average speed the student must maintain to arrive home no later than 5:00 PM, we need to consider the total time available for the trip and the distance to be covered.
The student starts at 7:00 AM and wants to arrive home by 5:00 PM. This means she has a total of 10 hours available for the trip (from 7:00 AM to 5:00 PM).
The distance to be covered is 700 km.
To find the minimum average speed, we divide the total distance by the total time:
Minimum average speed = Total distance / Total time
Minimum average speed = 700 km / 10 hours
Minimum average speed = 70 km/h
Therefore, the student must maintain a minimum average speed of 70 km/h to arrive home no later than 5:00 PM.
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Read the following scenario and decide if it is a hypothesis, theory or law.
John is an amateur astronomer who is in his second semester of high school physics.
Accordingly, he knows that objects in motion remain in motion and move at constant
velocity in a straight line until some force acts on them. John observes that all of the
planets in this solar system orbit the sun in approximately circular orbits. In addition,
the farther a planet is from the sun, the longer it takes for that planet to complete one
orbit. John discusses his observations with like-minded friends, who also observe and
verify what John has seen. Based on these consistent observations from many different
people, John concludes that there is gravity in outer space. Is this conclusion a
hypothesis, theory or law?
Hypothesis
Theory
Law
Answers
Answer:
this questions is capable of being answered by submitting law
this is my physical science homework on chemical equations please if you can answer them in order thank you!
Answers
what is the most widely believed though likely false aspect of the olympic truce story
Answers
Answer:
The truce ended all wars
Explanation:
The Olympic Truce or the sacred truce, is the declaration made by ambassadors for the laying down of arms and the stop of all hostilities starting from seven days before the Olympic games began and ending seven days after the games to provide safe passage for travelling athletes and also spectators to and from the Olympic games
However, the games were held during Persian wars and also during the Peloponnesian wars. As such the truce stopped mainly conflicts that have direct impact on the Olympic games and there was an attack in Olympia in 364 BC during the games.
Answer:
The truce ended all wars
Explanation:
Apex
The rollercoaster is raised a vertical distance of 35m to point A by a motor in 45 seconds.
The mass of the rollercoaster is 600kg.
The motor has a power rating of 8000W.
Gravitational field strength = 9.8 N/kg.
Calculate the percentage efficiency of the motor.
Answers
600kg = 5880N
(600 x 9.8)
As mass x gravity = weight.
Power= 5880 x 35/45 = 4573.3W
(Force x velocity, velocity is distance/time)
Efficiency= 4573.3/8000 x100 = 57.17%
i think the answer is 599 m/s but i’m not sure
Answers
Answer:
Explanation:
they are running directly at each other
p = m*v
where p is momentum
m is mass
and v is velocity ( physics term for speed and direction )
player A ) 80 * 8 = 640
player B ) 100 * - 5.5 = - 550
A +B = total momentum
640- 550 = 90
total mass is now player A + player B= 180
90 = 180 * v
90/ 180 = v
0.5 = v
they are moving to the right of the picture at 0.5 m/s
Jessica stretches her arms out 0.60 m from the center of her body while holding a 2.0 kg mass in each hand. She then spins around on an ice rink at 1.1 m/s.
a. What is the combined angular momentum of the masses?
b. If she pulls her arms into 0.15 m, what is her new linear speed?
I'm really confused ab the explanations behind this. help, please
Answers
Answer:
a.) L = 2.64 kgm^2/s
b.) V = 4.4 m/s
Explanation: Jessica stretches her arms out 0.60 m from the center of her body. This will be considered as radius.
So,
Radius r = 0.6 m
Mass M = 2 kg
Velocity V = 1.1 m/s
Angular momentum L can be expressed as;
L = MVr
Substitute all the parameters into the formula
L = 2 × 1.1 × 0.6 = 1.32kgm^2s^-1
the combined angular momentum of the masses will be 2 × 1.32 = 2.64 kgm^2s-1
b. If she pulls her arms into 0.15 m,
New radius = 0.15 m
Using the same formula again
L = 2( MVr)
2.64 = 2( 2 × V × 0.15 )
1.32 = 0.3 V
V = 1.32/0.3
V = 4.4 m/s
Her new linear speed will be 4.4 m/s
The surface tension of isopropanol in air has a value of 23.00 units and the
surface tension of water in air is 72.80 units. Which two statements are true?
A. Isopropanol will have a flatter meniscus than water because the
forces between the molecules are smaller.
B. Isopropanol will have a more curved meniscus than water
because the forces between the molecules are greater.
C. Isopropanol will have a lower boiling point than water because the
forces between the molecules are smaller.
D. Isopropanol will have a higher boiling point than water because
the forces between the molecules are greater.
Answers
Answer:
It's A & C
Explanation:
:p
Knowing the surface tension of isopropanol in air and surface tension of water in air we can say that:
Isopropanol will have a flatter meniscus than water because the forces between the molecules are smaller Isopropanol will have a lower boiling point than water because the forces between the molecules are smaller.What is isopropanol alcohol for?Isopropyl alcohol (IPA) at various concentration levels is considered a disinfectant (not for bacterial spores), virucide, fungicide and an effective waste removal agent widely used in cleanrooms and other contamination controlled environments.
So compare the surface tension of isopropanol and the water we can say that Isopropanol will have a flatter meniscus than water because the forces between the molecules are smaller and Isopropanol will have a lower boiling point than water because the forces between the molecules are smaller.
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A baseball is thrown 50.0m in 3.0s, what is the average speed of the baseball? Calculated answer is 16.666667! What is the correct answer when using significant figures?
Answers
Answer:
20m/s
Explanation:
Given parameters:
Distance of throw = 50m
Time = 3s
Unknown:
Average speed = ?
Solution:
Average speed is distance divided by time;
Average speed = \(\frac{distance }{time}\)
Insert the parameters and solve;
Average speed = \(\frac{50}{3}\) = 16.66667m/s = 20m/s
!! HELP PLEASE !! As seen from above, a 73.9 kg water skier is pulled by a 105 N force at a 22.5° angle, while the water creates a 74.8 N force pulling directly backward. What is the x-component of the total force on the skier?
Answers
Answer: The x-component of the total force 97N
Explanation:
Given the following :
Mass (M) of skier = 73.9 kg
Pull force on the skier = 105N
Angle of pull = 22.5°
The direct backward force directly pulling the skier = 74.8N
the x-component of the total force on the skier
The horizontal component of the force = Magnitude of the pulling force × cosine of the angle of pull (FCosΘ)
FCosΘ = 105cos22.5°
105cos22.5 = 105 × 0.9238795
= 97.007350
= 97N
The backward force acting directly backward = 74.8N
Therefore, net x - component of the total force equals ;
97N - 74.8N = 22.2N