Answer:
236.71 N
Explanation:
Applying,
F = ke................. Equation 1
Where F = force, k = spring constant, e = extension.
make k the subject of the equation
k = F/e.............. Equation 2
From the question,
Given: F = 89 N, e = 0.0191 m
Susbtitute these values into equation 2
k = 89/0.0191
k = 4659.69 N/m
When e = 0.0508 m
The force needed is given as
F = (4659.69×0.0508)
F = 236.71 N
Answer:
Force needed to compress spring by 0.0508 m = 236.71 N (Approx.)
Explanation:
Given:
Force applied = 89 N
Length of spring compress = 0.0191 m
Find:
Force needed to compress spring by 0.0508 m
Computation:
Using Hooke's law
F = K(x)
Constant K = F / x
Constant K = 89 / 0.0191
Constant K = 4,659.68 N/m
Force needed to compress spring by 0.0508 m
So,
Force needed to compress spring by 0.0508 m = K(X)
Force needed to compress spring by 0.0508 m = (4,659.68)(0.0508)
Force needed to compress spring by 0.0508 m = 236.71 N (Approx.)
Depending on how there used, pulleys can have different uses. One use for pulleys is that they can...
A. Increase the total work needed
B. Decrease the total work needed
C. Change the direction of a force
D. Roll things down a ramp
Do metals that react vigorously with hydrochloride acid also react vigorously with sulfuric acid?
Answer:
yes
Explanation:
Reactions of acids with metals
Acids react with most metals and, when they do, a salt is produced. But unlike the reaction between acids and bases, we do not get water. Instead we get hydrogen gas.
This is the general word equation for the reaction:
metal + acid → salt + hydrogen
For example, magnesium reacts with hydrochloric acid to produce magnesium chloride:
magnesium + hydrochloric acid → magnesium chloride + hydrogen
Mg + 2HCl → MgCl2 + H2
It doesn't matter which metal or which acid is used, if there is a reaction we always get hydrogen gas as well as the salt. However, how quickly the reaction goes depends on the metal used and how high up in the reactivity series it is.
For the mirror configuration below, the angle of incidence for the going towards the mirror on the right is 15 degrees. What is the angle of reflection for the light ray leaving the mirror on the bottom
Answer:
Thus, the angle of reflection is 15 degrees.
Explanation:
Angle of incidence, i = 15 degrees
The angle of incidence is the angle between the normal to the mirror and the incident ray, the angle of reflection is the angle between the reflected ray and the normal to the mirror.
According to the laws of reflection, the angle of incidence is equal to the angle of reflection.
Thus, the angle of reflection = angle of incidence = 15 degrees
Rex decides to launch a priceless vase into the air at a 90-degree angle. The initial velocity vase is +7.0 m/s. Dylan claims that the vase would achieve a higher height if it were launched at a 45-degree a Dylan correct? A. Dylan is correct because a 45-degree launch angle results in the largest vertical range B. Dylan is correct because larger launch angles result in a smaller vertical range. C. Dylan is incorrect because a 90-degree and 45-degree launch angle result in the same range. D. Dylan is incorrect because a 90-degree launch angle results in the largest vertical range
Answer:
D. Dylan is incorrect because a 90-degree launch angle results in the largest vertical range
Explanation:
Projectile is the motion of an object thrown into space. When an object is thrown into space, the only force which acts on it is the acceleration due to gravity.
An object thrown into space would reach maximum height (vertical range) if it is launched at an angle of 90 degrees. For maximum horizontal range, the object needs to be launched at an angle of 45 degrees.
Therefore Dylan is incorrect because a 90-degree launch angle results in the largest vertical range
The correct statement is
D. Dylan is incorrect because a 90-degree launch angle results in the largest vertical range
Information regarding projectile:It is the object motion that should be thrown into space. At the time when the object is thrown into space, the only force that should act on it represent the acceleration because of gravity.
Since object thrown into space should have to reach maximum height in the case when it is launched the 90 degrees angle. Due to the above reasons, option D is considered.
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0.160-kg hockey puck is moving on an icy, frictionless, horizontal surface. At t 0, the puck is moving to the right at 3.00 m/s. (a) Calculate the velocity of the puck ( magnitude and direction) after a force of 25.0 N directed to the right has been applied for 0.050 s. (b) If, instead, a force of 12.0 N directed to the left is applied from 0 tot 0.050s, what is the final velocity of the puck
Answer: [tex](a)10.812\ m/s\ (b)\ 0.75\ m/s\ \text{left}[/tex]
Explanation:
Given
Mass of hockey puck [tex]m=0.160\ kg[/tex]
Initial velocity of hockey puck is [tex]u=3\ m/s[/tex]
First a horizontal force of [tex]25\ N[/tex] is applied to the right for [tex]0.05\ s[/tex]
acceleration associated with it is
[tex]\Rightarrow a=\dfrac{25}{0.160}\\\\\Rightarrow a=156.5\ m/s^2[/tex]
Using equation of motion i.e.
[tex]\Rightarrow v=u+at\\\Rightarrow v=3+156.25\times 0.05\\\Rightarrow v=3+7.812\\\Rightarrow v=10.812\ m/s[/tex]
(b) When a force of [tex]12\ N[/tex] is applied for 0.05s
Using equation of motion i.e.
[tex]\Rightarrow v=3-\dfrac{12}{0.160}\times 0.05\\\\\Rightarrow v=3-75\times 0.05\\\Rightarrow v=3-3.75\\\Rightarrow v=-0.75\ m/s\\\Rightarrow v=0.75\ \text{towards left}[/tex]
Put these components from largest to smallest
1. comet
2. star
3. galaxy
4. nebula
5. planet
6. universe
Answer:
6, 3, 2, 5, 4, 1
Explanation:
Let's describe them from smallest to largest. In fact the size order is not exact as there are exceptions.
An asteroid is a rocky body which lies in the asteroid belt between Mars and Jupiter. They are typically quite small object. The largest asteroid Ceres has been reclassified as a dwarf planet.
A moon is typically a rocky body which is in orbit around a planet. Some moons such as our Moon are quite large and are typically bigger than asteroid. Some moons can actually be smaller than some asteroids.
A planet is a nearly spherical body which is in orbit around the Sun. Planets are larger than moons.
A star is what planets orbit around. It is the source of light and heat. Our Sun is a star which is many times bigger than all of the planets.
A solar system is a star and all of its planets, asteroids, comets and other bodies. It is significantly bigger than a star.
A galaxy, such as our Milky Way Galaxy, is a collection of solar systems orbiting around a central core. Most galaxies have a supermassive black hole at their centres.
Galaxies also form clusters which are large scale structures.
The universe is everything. It contains billions of galaxies.
Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far away was the object that reflected it?
Answer:
8.575 m
Explanation:
speed = distance/time
distance -- 2d
343 = 2d/0.05
2d = 17.15
d = 17.15/2
d = 8.575
Thenks and mark me brainliest :))
ASAP will do brainiest 22 points PLSS HELP
Sports such as football, baseball, soccer, horseback riding, tennis, volleyball, skateboarding, and surfing (to name a few) are full of examples of Newton’s Three Laws of Motion. To answer this question: 1. Choose any sport. Write down the name of the sport. 2. In your own words, state each of Newton’s 3 Laws of Motion and give a clear, specific example of how each law applies to the sport you have chosen.
Answer:
tenis
Tenis applies to each of Newton's 3 Laws of Motion because with the first law if a tenis ball is at rest it will stay at rest unless acted on by an unbalanced force which would be playing tenis in which it would stay in motion. The second law applies since the acceleration at which it is hit times the mass equals the force it has. The third law applies since when hitting a tenis ball back and forth with racquets the reaction may be equal or opposite
Which of the following characteristics were not included in John Dalton's description of the atom? A. In any element, all the atoms are the same. B. Atoms are smaller than quarks. C. All matter is made up of atoms. D. Atoms exist only on Earth. E. Elements in a compound are always in a constant ratio. NO LINKS OR VIRUSES PLS
Answer:
d
Explanation:
atoms exits everywhere
Answer: The correct choices to this question are, "B. Atoms are smaller than quarks," and "D. Atoms only exist on earth." Hope this helped.
Name the component used in electric circuits that is sensitive to temperature
Answer :
Tungsten filamentThe speed of light in a piece of plastic is 1.87 × 10^8 meters per second. What is the absolute index of refraction of this plastic?
Question 11 options:
1.00
1.6
0.67
1.33
[tex]\tt\red{See \; Your \: Answer!}[/tex]
Your answer was 0.67m...
What is the resistance of resistor R3?
Answer: 2.0
Explanation: I KNOW !
5. Which energy transformation would friction
cause on a moving train?
A. kinetic energy into thermal energy
B. potential energy into sound energy
C. kinetic energy into potential energy
D. thermal energy into potential energy
Answer:
Fossil fuels store energy from the sun as
Explanation:
What is a specific heat capacity of air in calorie per gram Celsius?
Answer:
I dont know hehe
Explanation:
Sakit na ulo ko.
A moon orbits a planet in a nearly circular orbit of radius R, as shown in the figure. Which of the following free-body diagrams could be used to analyze the forces exerted on the moon when it is at the position indicated in the figure?
I don't see any free body diagrams.
Free body diagram of a moon orbits a planet in a nearly circular orbit of radius R, as shown in the figure is attached in the answer. This could be used to analyze the forces exerted on the moon when it is at the position indicated in the figure.
What is free body diagram?Free-body diagrams are used to display the relative strength and direction of all forces that are being applied to an item in a certain scenario. A unique illustration of the vector diagrams that were covered in a previous lesson is the free-body diagram. We will make use of these graphics throughout our study of physics. In a free-body diagram, the size of the arrow indicates the strength of the force.
The force is acting in the direction indicated by the arrow's direction. The exact type of force is labelled next to each force arrow in the diagram. In a free-body diagram, it is common practice to depict the item as a box and to draw the force arrow from the box's center outward in the direction that the force is acting.
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You weigh a bear by making him stand on four scales as shown. Draw a free-body diagram showing all the forces acting on the bear. If his weight is 1,500 newtons, what is the reading on
the fourth scale?
Answer:
what a fat bear I love physics
How much kinetic energy is required to break through?
Explanation:
The natural environment or natural world encompasses all living and non-living things occurring naturally, meaning in this case not artificial. The term is most often applied to the Earth or some parts of Earth
The diagram shows the electric field near conducting sphere a which of the following statements is correct
A __________ is a push or pull.
Answer:
force
Explanation:
Force is a push or a pull of an object that causes the object to speed up, slow down, or stay in one place. In other words, a force is what causes an object to move. Friction and gravity are two types of forces that influence how an object moves.
If the index of refraction for a certain glass is 1.5, and the angle of refraction is 15 degrees for a ray of light
traveling from air (index of 1) what is the angle of incidence? (in coming beam)
Round your answer to the nearest tenth of a digit. The answer is in degrees so don't worry about the units
Answer:
[tex]\theta_i = 23^o[/tex]
Explanation:
The refractive index of a medium is given by the following formula:
[tex]\eta = \frac{Sin\theta_i}{Sin\theta_r}[/tex]
where,
η = refractive index = 1.5
[tex]\theta_i[/tex] = angle of incidence = ?
[tex]\theta_r[/tex] = angle of refraction = 15°
Therefore,
[tex]1.5 = \frac{Sin\theta_i}{Sin15^o}\\\\Sin\theta_i=(1.5)Sin15^o\\\\\theta_i = Sin^{-1}(0.388)\\\\[/tex]
[tex]\theta_i = 23^o[/tex]
What is exothermic .Is it a reaction?
Answer:(of a reaction or process) accompanied by the release of heat.
Explanation: trust moi
if displacement covered by a particle is zero then distance cover by it
Answer:
When displacement is zero, the particle may be at rest, therefore, distance travelled = 0.
Again, when displacement is zero, the final position matches with the initial position after some time, but the distance travelled will not be zero.
You push a box 3.5 m across the floor with a constant force of 12.4 N. How much work do you do on the box?
Answer:
43.4 N (newton)
Ohm's law states which relationship between electrical quantities? a. Volts = current x resistance b. Volts = current divided by amps c. Volts = coulombs divided by charge d. Volts = resistance times charge
Answer:
a. Volts = current x resistance
Explanation:
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex] V = IR[/tex]
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
Hence, Ohm's law gives the relationship between voltage, current and resistance of an electric circuit.
After hearing about an accident on his normal route, Mr. Gujral checks for alternate routes to get to work. What type of circuit does this traffic situation model?
Answer:
C
Explanation:
a parallel circuit because there is more than one path
Answer:
C) a parallel circuit because there is more than one path
Explanation:
EDGE 2022
A rock is thrown down from the top of a cliff with a velocity of 3.61 m/s (down). The cliff is 28.4 m above the ground. Determine the velocity of the rock just before it hits the ground.
The velocity of the rock just before it hits the ground is approximately 23.87m/s.
What is the velocity of the rock just before it hits the ground?From the third equation of motion;
v² = u² + 2gs
Where u is initial velocity, v is final velocity, g is acceleration due to gravity ( g = 9.8m/s² ) and s is distance covered.
Given the data in the question;
Initial velocity u = 3.61m/sHeight of cliff s = 28.4mFinal velocity v = ?To determine the final velocity, plug the given values into the equation of motion above.
v² = u² + 2gs
v² = ( 3.61m/s )² + ( 2 × 9.8m/s² × 28.4m )
v² = 13.0321m²/s² + 556.64m²/s²
v² = 569.6721m²/s²
v = √( 569.6721m²/s²)
v = 23.87m/s
Therefore, the final velocity of the object is 23.87m/s.
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What is total internal reflection?
Answer:
When a ray of light, passes from a denser to a rarer medium with the angle of incidence greater than the critical angle, the ray is reflected back into the same medium. This phenomenon is call total internal reflection.
What is the magnitude of kinetic energy of a 20kg box moving at a velocity of 8m/s
A. 160 J
B. 80 J
C. 640 J
D. 1280 J
Answer:
Explanation:
[tex]KE=\frac{1}{2}mv^2[/tex] and we are solving for KE:
[tex]KE=\frac{1}{2}(20)(8)^2[/tex] which gives us that
KE = 640 J, choice C.
A 15kg dog jumps out of a 40 kg canoe. If the dog's velocity is 1.2 m/s, what is the velocity of the canoe
Answer:
the velocity is 0.45 m/s and it is moving in the opposite direction
or
-0.45 m/s
Explanation:
The law of conservation of momentum says that initial momentum = final momentum
( mass x velocity of the dog ) = - (mass x velocity of the canoe)
(15 x 1.2) =- (40 x velocity of the canoe)
Velocity of the canoe = -(15 x 1.2) / 40 = -0.45 m/s
Which calculates the intensity of an electric field at a point where a 0.50 C charge experiences a force of 20. N?
Answer: [tex]40\ N/C[/tex]
Explanation:
Given
Magnitude of charge is [tex]q=0.5\ C[/tex]
Force experienced is [tex]F=20\ N[/tex]
Electric field intensity is the electrostatic force per unit charge
[tex]\therefore E=\dfrac{F}{q}\\\\\Rightarrow E=\dfrac{20}{0.50}\\\\\Rightarrow E=40\ N/C[/tex]
Thus, the electric field intensity is [tex]40\ N/C[/tex]