The horizontal component is 0.72 N to the right.
How is force and friction related ?The amount of static friction is inversely proportional to the amount of normal force and the degree of roughness between the sliding surfaces. The friction coefficient is calculated by dividing the frictional force's magnitude by the force's normal force.
The applied force must be greater than the friction force since the net force is to the right (in the direction of the applied force). Understanding net force as the vector sum of all the forces can help you calculate the friction force.
Given , F = 1.2 N and mass = 1 kg
we will you F - цN = ma ------- 1
and equate it with the equation ma = mg + N
After substituting the values
We will get the value of acceleration as 0.4 [tex]m/s^2[/tex]
Substitute this value in equation 1
and we will get ц = 0.72 N
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A sports car is accelerating up a hill that rises 21.7 ° above the horizontal. The coefficient of static friction between the wheels and the road is μs = 0.880. It is the static frictional force that propels the car forward. (a) What is the magnitude of the maximum acceleration that the car can have? (b) What is the magnitude of the maximum acceleration if the car is being driven down the hill? I set up my fbd with the static frictional force acting in the -x direction, the normal force acting perpedicular to the inclined plane, and the weight acting in the -y direction. Without knowing the weight of the car or if it is at a constant velocity, I'm not sure how to go about setting up this problem.
The maximum acceleration that the car can have is 11.17 m/s² and the maximum acceleration the car can have while driving downhill 5.4 m/s².
(a) Mass of the car = m
Acceleration due to gravity = g
Angle of inclination = θ = 21.7°
Acceleration of the car = a
Coefficient of static friction = μ = 0.880
Force pushing the hill is the maximum static force = μ×m×g×cosθ
Force down the hill = m×g×sinθ
Total force = m × a
Thus, equating all the force,
= m × a = (μ×m×g×cosθ) - (m×g×sinθ)
= a = [(μ×m×g×cosθ) - (m×g×sinθ) ] / m
= a = (μ×g×cosθ) - (g×sinθ)
= a = g × [(μ×cosθ) - (sinθ)]
= a = 9.8 × [ (0.88 × cos 21.7) - (sin 21.7)]
= a = 9.8 × [ (0.88 × - 0.96) - 0.29 ]
= a = 11.17 m/s²
(b) While going down the hill, gravity and friction act in the same direction:
Thus, equating all the force,
= m × a = (μ×m×g×cosθ) + (m×g×sinθ)
= a = [(μ×m×g×cosθ) + (m×g×sinθ) ] / m
= a = (μ×g×cosθ) + (g×sinθ)
= a = g × [(μ×cosθ) + (sinθ)]
= a = - 5.4 m/s²
The sign is negative as the car is going downhill.
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What happens to an object in each second of free fall?.
An object in each second of free fall than falls a greater distance than it did in the previous second.
In mechanics, "freefall" refers to the condition of a body when it is subject to gravity and can move freely in any direction. In the Sun's gravitational field, the planets, for instance, are falling freely. Because both the ship and the astronaut are falling, weightlessness is felt by an astronaut orbiting the Earth in a spacecraft. Even though they are both subject to Earth's gravitational pull, the spacecraft stays in orbit around the planet thanks to its forward momentum. Only the center of mass is falling freely because gravitational forces are never uniform. Tidal forces are present at all other places of a body because they move in a slightly different gravitational field.
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when children withdraw from contact with others, they tend to get rejected by others in turn. as these children become adolescents, the avoidance by others .
As these kids grow into teenagers, other people's avoidance of them is likely to get worse. Some kids cut off contact with others, which causes other people to reject them.
How old is adolescence?Overview. Ages 10 to 19 are considered adolescent years, the transitional period between childhood and maturity. It is a distinct period in human development or a critical time for establishing the basis of health. Teenagers go through a rapid period of physical, cognitive, and psychosocial development.
Who falls into this category?Beginning with the commencement of physically normal puberty, adolescence lasts until the acceptance of an adult identity and behavior. According to the Global Health Firm's definition of adolescence, this developmental stage falls roughly between the ages between 10 and 19 years.
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object 1 and object 2 have the same mass and are moving at the same speed. true or false? the momentum of object 1 must be the same as the momentum of object 2
object 1 and object 2 have the same mass and are moving at the same speed. TRUE
Why is the given statement true ? What is momentum ?The given statement is true because the momentum of an object is defined as mass multiplied by velocity. And both of these objects have the same mass which means the first condition is satisfied and secondly they have the same velocity too. Thus the second condition is also satisfied.
Thus we can say that the momentum of both the objects will be the same.
As momentum depends on both velocity and the direction of the body's motion, it is quantified by "mass velocity". Since velocity is a vector and mass is a scalar, momentum is a vector quantity. Mass times speed equals momentum. p = mv.
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if three identical lamps are connected in parallel and the combined resistance 150 ohm; find the resistance of one lamp. Ans. 450 ohms
Answer:
[tex]\huge\boxed{\sf R = 50\ ohms}[/tex]
Explanation:
Given Data:Equivalent Resistance = [tex]R_T[/tex] = 150 Ohm
Required:Resistance of one lamp = R = ?
Formula:[tex]R_T[/tex] = R + R + R
Solution:150 = 3R
Divide 3 to both sides
50 ohms = R
R = 50 ohms
[tex]\rule[225]{225}{2}[/tex]
What factors does the speed of sound depend upon? what are some factors that it does not depend upon?.
The speed of the sound depends on the density and the elasticity of the medium through which it travels.
What factors does the speed of sound depend upon ?Medium pressure and temperature Sound waves move more quickly at higher temperatures because molecular vibrations happen more frequently there. At constant temperature, the pressure of a medium has no effect on the sound's speed.
The density and elasticity of the medium through which sound travels affect how fast it travels. In general, sound moves more quickly through solids and gases than through liquids. Sound travels through a medium more quickly the more elastic it is and the less dense it is.
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The dots in these cylinders represent the shape and density of the particles in the different states of matter. each dot represents a charged ion, so when two ions are together in pair, they represent a neutral atom. an illustration of 4 beakers labeled a, b, c and d with particles in them. beaker a has singular particles with a lot of space between them. beaker b has particles joined in pairs with a lot of space between them. beaker c has individual particles closer together and in the bottom half of the beaker. beaker d has individual particles against each other in the bottom half of the beaker in a fixed pattern. which container most likely contains a plasma? a b c d
The container which is most likely to have plasma is option A) i.e, blue dots.
There are four physical states of matter, they are solids, liquids, gases and plasma.
The first container is likely to contain a gas. In this state, the neutral atoms or molecules are moving freely, so that the particles occupy the whole container.
The representation corresponding to paired green and orange dots in container 2 represents that they are not free ions as they are paired and they occupy the entire space inside the container.
The molecules or ions are tightly packed in solids. this is represented by the red dots in container D. These substances do not change or adapt to the container.
Plasma is a state that is similar to the that of a gas. But these particles are also free ions. It is represented by the blue dots in container A.
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It is beaker D. with all the red circles at the bottom
Two objects are at rest on a frictionless surface. Object 1 has a greater mass than object 2.
(a) When a constant force is applied to object 1, it accelerates through a distance d. The force is removed from object 1 and is applied to object 2. At the moment when object 2 has accelerated through the same distanced, which statements are true? (Select all that apply.)
1. K1 < K2
2. p1 > p2
3. p1 = p2
4. p1 < p2
5. k1 = K2
6. k1 > k2
(b) When a force is applied to object 1, it accelerates for a time interval Δt. The force is removed from object 1 and is applied to object 2. Which statements are true after object 2 has accelerated for the same time interval Δt? (Select all that apply.)
1. K1 > K2
2. p1 < p2
3. k1 < K2
4. k1 = k2
5. p1 > p2
6. p1 = p2
Linear Momentum & Kinetic Energy
To compare the momentum and kinetic energy of two objects, we need to know the mass of the object and the speed acquired by the moving object. To solve this problem, we need to take advantage of the work-energy theorem and the impulse-momentum theorem.
According to the work-energy theorem:
W
net
=
Δ
K
According to the impulse-momentum theorem, we write:
I
m
p
u
l
s
e
=
C
h
a
n
g
e
i
n
m
o
m
e
n
t
u
m
The momentum of the object is calculated by using the following formula:
|
→
p
|
=
m
v
The kinetic energy of the object is calculated by using the following formula:
K
=
1
2
m
v
2
where m
is the mass of the object, v
is the speed of the object, and K
is the kinetic energy of the object.
The correct relation will be:
(a) K1 = K2
(b) K1 < K2
According to the question,
Potential energy be "P".
Kinetic energy be "K".
(a) Work done towards both the block will be similar.
So,
P₁ = P₂
K₁ = K₂
(b) We know,
α = F/M
or V = a x t
Now,
Kinetic energy = (1/2)mv²
K = 0.5 * M * V²
K = 0.5 * M * F²/M² * t²
K = 0.5 * F² * (t²/M)
Therefore, the kinetic energy of 1 is smaller than kinetic energy of 2 as the force and time will be same. So K of the smaller mass will be greater than the larger mass.
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Spiderman uses his spider webs to save a runaway train moving about 80km/h , (Figure 1) . His web stretches a few city blocks (500m ) before the 104-kg train comes to a stop.
Assuming the web acts like a spring, estimate the effective spring constant.
Express your answer to one significant figure and include the appropriate units.
The effective spring constant for the web, which behaves like a spring, is 20N/m
The speed of the train is,
v=80 km/h
= 80 km/h(1000m/1km)(1h/3600s)
=22.2 m/s
From the law of conservation of energy, the initial kinetic energy of the train should be converted to the elastic potential energy of the web before stopping the train.
[tex]K_{train} = U_{web}[/tex]
1/2 * m * v² = 1/2 * k * x ²
k = (m * v ²)/(x ²)
= ((10⁴kg) * (22.2m / s) ²)/((500m) ²)
= 19.7N / m = 20N / m
One of the four temperate seasons, commonly referred to as spring or springtime, spring follows winter and comes before summer. There are several technical definitions of spring, but how the term is used locally depends on the local climate, culture, and customs. Autumn occurs in the Southern Hemisphere when spring does in the Northern Hemisphere, and vice versa.
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to determine the norm of residual for vector d by using the following function, select the correct sentence to fill in the missing part in function calresidual.
The answer to this question will be while i < D (length).
The norm of residuals is a degree of the goodness of healthy, in which a smaller price shows a better match than a bigger price. it's far calculated the usage of the norm function, norm(V,2), where V is the vector of residuals.
The residual for every observation is the distinction between predicted values of y (dependent variable) and discovered values of y. Residual=actual y value−expected y fee,ri=yi−^yi. In linear regression, a residual is a difference between the actual price and the price anticipated with the aid of the version (y-ŷ) for any given point.
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a simple pendulum is used as the timing element in a clock as shown. an adjustment screw is used to make the pendulum shorter (longer) by moving the weight up (down) along the shaft that connects it to the pivot. 1)if the clock is running too fast, the weight needs to be moved
If the clock is running too fast, the weight needs to be moved down in order to increase the period and decrease the angular frequency, option B.
What will the period be when pendulum is pivoting about the center mass?For small maximum distance moved by a point or wave measured from it equilibrium position, the period of a physical pendulum depends only on the immobility of the body around the pivot point and the distance from the center of mass of the body.
To slow down a fast clock in this experiment, the weight is moved down which increases at the distance between the pivot and the center mass (period) and decreases the angular velocity/frequency.
The complete question is:
A simple pendulum is used as the timing element in a clock as shown. an adjustment screw is used to make the pendulum shorter (longer) by moving the weight up (down) along the shaft that connects it to the pivot.
1)if the clock is running too fast, the weight needs to be moved
a. Up
b. Down
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a cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 7.90 cm. if the cork is 13.5 m from shore, how long does it take a ripple passing the cork to reach the shore?
The time taken for the cork to reach the shore is 85.44 s.
What is the wave's fundamental formula?Write down the wave function as y(x,t)=Asin(kxt+) to determine a sinusoidal wave's amplitude, wavelength, period, and frequency. The equation itself can be used to read the amplitude, which equals A. The angular frequency (T=2) can be used to calculate the wave's period.
Calculation:Frequency of oscillation, f = 2hz
Wavelength of oscillation, λ = 7.90 cm
Distance of the cork from the shore, d = 13.5 cm
The speed of wave is:v = f × λ
v = 2 × 0.079
v = 0.158 m/s
Time taken by the cork to reached the shore is:time = distance / speed
time = 13.50 / 0.158
time = 85.44 s
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a block of mass 1/2 kg, attached to the end of a spring whose force constant is 18 n/m, is undergoing simple harmonic motion with an amplitude of 4 cm. what is the frequency of the oscillations? g
The frequency is given by f = (1/(2))k/m.
While moving in the opposite direction, the acceleration, a = -2x, is proportional to the displacement. Motion that is accelerated is simple harmonic motion. If an item moves in a simple harmonic manner, a force must be exerted on it. F = ma = -m2x is the formula for force.
A basic definition of amplitude, what is it?The greatest displacement or distance that a point on a wave or vibrating body may travel in relation to its equilibrium position It is equivalent to the length of the vibration path divided in half.
What exactly is a wave's amplitude?The height of a wave's crest or trough measured from the center line (or the stationary position) is known as the amplitude ().
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FILL IN THE BLANK. Piaget's stage theory of cognitive development suggests that a child's thinking is fundamentally different - more advanced - in each stage than it was in the previous stage. This demonstrates the concept of _____ change.
a. qualitative
b. discontinuous
c. continuous
d. quantitative
This demonstrates the concept of qualitative change.
Qualitative physics is involved with representing and reasoning about the physical world. The goal of qualitative physics is to seize both the common-sense knowledge of the character on the street and the tacit know-how underlying the quantitative knowledge used by engineers and scientists. The place is now a little over ten years antique, which, as a minimum measured in the span of AI, is a protracted time. So it makes experience to step again and attempt to systematize the work in the field and describe the modern kingdom of art.
Qualitative physics is growing rapidly, and thus any survey is likely to become quickly dated. Physics, one of the crowning successes of the scientific technique, has been carried out. on for masses of years. However recollect: Physicists have already got common sense theories of the arena.
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using a pencil draw a line on the sea floor to show where new ocean crust and lithosphere is forming now (zero millions of years old). using your knowledge of boundary types, label the segments of your line that are juan de fuca ridge and gorda ridge (divergent plate boundaries). then label the segments of your pencil line that are transform fault plate boundaries. add half arrows to the transform fault boundaries to show the relative motion of the rocks.
Fault lines, also known as geological faults, are fractures in the rock blocks that make up the earth's surface, causing them to suffer relative displacements in their structures. These fractures are almost always formed by the action of internal relief agents and can manifest both in areas under strong tectonism and in more stable regions.
In other words, we can say that the fault lines are the crust of the lithosphere that fractured along the plate boundaries and grooves.
Oceanic lithosphere is destroyed at “Convergent Boundaries
Convergent boundaries are places where two tectonic plates meet each other.
The crust is the outermost layer of the earth. It is divided into many plates that move over the mantle.
These plates are limited by three types of ridges or borders that differ in the movement they produce.
Therefore, lithosphere occur at convergent boundaries where oceanic plate moves and is forced to sink due to the high gravitational energy into the mantle and also because the oceanic plate has density this zones usually have high volcanism and earthquake.
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a volleyball player jumps up to spike the ball over the net. to spike the ball without changing the spin on the ball the athlete will applies a torque to the ball
The term "biomechanics of volleyball" describes the application of this science to the movements used in the sport.
What is biomechanics?The study of how the body functions mechanically is known as biomechanics. By examining the individual components, this field aims to make sense of the intricate nature of human movement. The term "biomechanics of volleyball" describes the application of this science to the movements used in the sport.In volleyball, quickness, power, strength, and finesse are used in complicated combinations. Each of these parts is made up of intricate, little movements, the sums of which are coordinated attempts to strike the volleyball in the desired way. One of the most thrilling shots in volleyball when done well is the spike, which is a fantastic illustration of this.To learn more about Biomechanics refer to:
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What is the frequency of a wave with a wavelength of 200?.
The wave's frequency, f=0.5Hz or 1/s, should be regarded as the waves with a wavelength = 200 cm.
What then is the wavelength?Wavelength is the separation between corresponding points (adjacent crests) in successive cycles of a waveform signal traveling through space or over a wire. In wireless systems, the length is typically expressed in meters (m), centimeters (cm), or millimeters (mm).
Since the wavelength is 200 cm or 2m
Also we know that
frequency is reciprocal of wavelength
So,
f=1/2
f=0.5Hz
What role does wavelength play?The wavelength is a crucial characteristic since it governs the nature of the light. Green light spectrum that is distinct from both of them, while red light has a wavelength that is distinct from both blue and green light.
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if it can span 300 ft and has a sag of 15 ft , determine the length of the cable. the ends of the cable are supported at the same elevation.
The length of the cable, 3000 ft
How to determine the length of the cable?Distance is measured in length. Length has the dimension of distance in the International System of Quantities. The majority of measurement systems choose a base unit for length from which all other units are derived. The metre serves as the foundational unit of length in the International System of Units.we know,
[tex]y=\frac{4h}{l^{2} } x(l-x)[/tex]
where,
h, maximum height= 15 ft
l= span = 300 ft
Therefore,
[tex]y=\frac{4h}{l^{2} } x(l-x)[/tex]
[tex]y=\frac{4*15}{300^{2} } x(300-x)[/tex]
[tex]\int\limits {y} =\int\limits^3_0 {\frac{4*15}{300^{2} } x(300-x)} \, dx[/tex]
Therefore, The length of the cable, 3000 ft.
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You stand in front of a mirror. How tall does the mirror have to be so that you can see yourself entirely?a. same as your heightb. less than your full height but more than half your heightc. half your heightd. less than half your heighte. any size will do
In other words, you need as much mirror as your height to see a reflection of yourself in a flat mirror. A correctly positioned 3 foot-long mirror is required for a 6 foot-tall guy to see his whole reflection.
What is mirror?
A thing that reflects images is a mirror as well as looking glass. When focused through an eye or camera lens, light that reflects off a mirror will reveal an image of what is in front of it. Mirrors reflect light from an equal but opposite angle, reversing the direction of the image. This enables the viewer to see themselves, objects behind them, and even objects that are in their line of sight but out of it, like objects that are around a corner, but are at an angle from them. Natural mirrors have been around since the beginning of time, such as the water's surface, but for thousands of years, people have been making mirrors from a variety of materials, including stone, metals, and glass.
Ray diagrams were explained and demonstrated for use. The location along a mirror that a person must look in order to see an image of themselves can be determined using ray diagrams. So it is possible to utilize ray diagrams to calculate what area of a plane mirror must be used in order to display an image.
The mirror must be at least half your height in size in order to show your entire image. It really is that easy mirror.
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how can worlds like triton and pluto have atmospheres when a larger world such as ganymede has none?
What is the frequency of green light 6 x 10 14?.
The frequency of green light is 6 x 10¹⁴ Hz then its wavelength will be 500nm.
The frequency of a repeated event is its number of instances per unit of time. In some cases, it is also referred to as temporal frequency or ordinary frequency to underline differences with spatial and angular frequencies, respectively.
As we know,
Speed of light = Frequency × wavelength
Speed of light (c)=3×10⁸ m/s
Frequency (f)=6×10¹⁴ Hz(Given)
Wavelength (λ)=?
Therefore,
λ= f × c
λ = 6×10¹⁴× 3×10 ⁸
λ = 0.5×10⁻⁷
λ = 500nm
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12. why does the sun gradually brighten and how does this brightening affect the location of the habitable zone over time?
Therefore, Europa lies outside the habitable zone of the sun and is therefore not a place where life can exist.
What is habitable zone?
The habitable zone gradually takes on a new shape. How much starlight can warm a planet determines its shape. The physical size and luminosity of an aging star increase in all directions, and as they do, so does their heat, which moves outward with them.
What is sun stage?
The Sun is currently and will remain for the next 4-5 billion years a main-sequence star. It will then develop and cool to become a red giant before shrinking and reawakening to become a white dwarf. The white dwarf star will gradually cool down once its nuclear fuel has run out over many billions of years.
When hydrogen in the core transforms into helium, the density of hydrogen begins to decline over time. This causes the rate of nuclear reactions to slow down in the core, which lowers radiation pressure.
By warming and contracting to maintain the balance while gravity pulls inward, the core compensates. The sun's temperature starts to rise as a result. The brightness of the sun also rises when the temperature starts to rise.
As the habitable zone expands and moves away from the sun, it is affected by the sun's brightness over time.
Earth has been habitable for 4 billion years because its surface temperatures allow liquid water to exist.
Titan is colder than Earth and lacks liquid water that is stable. Titan is not a place where people can live.
The habitable zone of the sun extends only as far as Mars. The surface of Mars is inhospitable.
Europa is heated by the tides, which permits liquid water to exist beneath its ice-covered surface.
Therefore, Europa lies outside the habitable zone of the sun and is therefore not a place where life can exist.
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What would happen to the pressure as the volume approaches zero?.
Very accurate measurements over a wide range of pressure have been made for large number of real gases.
The product of P cross product with V is not constant for any gases.
The real gases the dependence shows the deviation in partial pressures of individual gas molecules and azeotropes.
The curves extrapolated with compressibility factor with the constant product for some gases if pressures are very low.
[tex]\alpha =\frac{Pv}{RT}\\ \\\alpha =\left \{ {{1 - ideal} \atop {\neq 1-real}} \right.[/tex]
From Charles law the volume approaching to zero means pressure attaining infinite value. The compressibility factor is an index of deviation from ideality.
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ideally, how will the rubber duck (representing individual water particles in a wave) in the image move in comparison to the propagation of a series of waves moving toward the right?
Ideally, the rubber duck (representing individual water particles in a wave) moves ups and down at same position in comparison to the propagation of a series of waves moving toward the right.
What is wave?A wave is an energetic disturbance in a medium that doesn't include any net particle motion. Elastic deformation, a change in pressure, an electric or magnetic intensity, an electric potential, or a change in temperature are a few examples.
The distance separating two successively identical wave components is known as the wavelength. The greatest deviation from the neutral position is called the amplitude.
In wave energy and disturbance moves but the materials of the medium remains in same position. So, the rubber duck (representing individual water particles in a wave) moves ups and down at same position in comparison to the propagation of a series of waves moving toward the right.
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consider the four scenarios involving visible light. in scenario a, visible light has a wavelength of 690.4 nm. determine its frequency, energy per photon, and color.
In scenario a, if visible light has a wavelength of 690.4 nm, its frequency is 434.53 THz, its energy per photon is 28.79 YJ and its color is red.
v = ν λ
v = Wave speed
λ = Wavelength
ν = Frequency
λ = 690.4 nm
Since the wave considered here is visible light,
v = c = 3 * 10⁸ m / s
ν = v / λ
ν = 3 * 10⁸ / 690.4 * 10⁻⁹ m
ν = 434.53 * 10¹² Hz
ν = 434.53 THz
E = h ν
E = Energy
h = Planck's constant
ν = Frequency
h = 6.626 * 10⁻³⁴ J s
E = 6.626 * 10⁻³⁴ * 434.53 * 10¹²
E = 2879.19 * 10²² J
E = 28.79 * 10²⁴ J
E = 28.79 YJ
Therefore, if visible light has a wavelength of 690.4 nm, its frequency is 434.53 THz, its energy per photon is 28.79 YJ and its color is red.
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how far from the lens must the film in a camera be, if the lens has a 35.0 mm focal length and is being used to photograph a flower 75.0 cm away?
The focal length of the lens is known to be 35 mm, and it is implied that the formed image must be on the opposite side of the object; as a result, the image is real and the distance d is positive.
However, the lens's focal length's sign, or whether it is converging or diverging, is unknown.However, since it is known that the image is real and that the distance d is greater than the focal length f, the convex lens—which has the ability to produce both real and virtual images—is used in this situation. However, it will only produce a real image if the object is farther away from the focal point . We have f=35.0 mm=3.50 cm because d_o > fd > f indicates that the used lens is convex and would have a positive sign.To know more about focal length of the lens -
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Match the terms to the def
Answer:
1.) Cation
2.) Ion
3.) Anion
Explanation:
_____ braking is when you squeeze the brake pedal until just before the wheels lock, then ease off the pedal, then squeeze again, repeating until you've reduced your speed enough.
Threshold braking is when you squeeze the brake pedal until just before the wheels lock then ease off the pedal then squeeze again repeating until you've reduced your speed enough.
Push to lower the nose of the car, push more if needed, and loosen towards the end of the stop. The point is that the transition is slowly pushed down and slowly released upwards. To stop faster, we all do the same thing just a little bit faster.
Limit braking or limit braking is the most commonly used driving technique in motorsports but it is also practiced in road vehicles to use the brakes to slow the vehicle to the maximum possible extent. Progressive braking is a method of using variable braking force to slow the car down at the onset of light braking increase braking force to slow the car and then stop braking lightly.
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Answer: The answer options are A Traditional B ABS C Power D Threshold. The correct answer is Threshold braking
Suppose we see evidence of helium gas in the atmosphere of an exoplanet. What must be true about this planet?.
Suppose we see evidence of helium gas in the atmosphere of an exoplanet, the true statements is A."it has more surface gravity than Earth, or is much colder"
What is an exoplanet?An exoplanet, also known as an extrasolar planet, is a planet that exists outside of the Solar System. The first possible evidence of an exoplanet was discovered in 1917, but it was not recognized. The first detection confirmation occurred in 1992. A different planet, first discovered in 1988, was confirmed in 2003.
Similarly to how we continue to explore the unknowns of the world in search of resources to meet our needs, research into new materials and species will all benefit the most common problems we face, such as energy resources, medical needs, and cures for incurable diseases.
Before we knew about exoplanets, we spent all of our research time learning about our own solar system and how the planets formed. Exoplanet observations allow us to determine whether or not we actually understand those processes, even in our own solar system.
It is important to know that once helium is released into the atmosphere, it typically rises till it escapes into the space. In this situation, it illustrates that exoplanet will have more surface gravity.
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A child is on a playground they start to slide down a large slide. At what point is the child in dynamic equilibrium with the slide?(1 point) responses when the child pushes themselves down the slides. When the child pushes themselves down the slides. As the child is in motion as they are sliding down. As the child is in motion as they are sliding down. When the slide ends and the child has stopped moving. When the slide ends and the child has stopped moving. The child will not reach dynamic equilibrium.
When two surfaces glide past one another, a force known as friction is created.Friction forces that oppose the motion of moving objects cause them to expend energy and slow down.
What is the role of sliding friction in the movement?An object rolls on a surface, creating rolling friction. When two surfaces rub against one another, sliding friction occurs. The deformation of surfaces causes rolling friction. Because tiny surfaces connect, sliding friction occurs.
Therefore, When the child pushes themselves down the slides. As the child is in motion as they are sliding down.
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Answer:When the child pushes themselves down the slides.
Explanation: i think im not sure
