Answer:
First blank:
reflected
Second blank:
absorbed
third blank:
Transparent
fourth blank:
transmitted
fifth blank:
light
sixth blank:
optic
seventh blank:
path
eighth blank:
frequency
Explanation:
Why did astronomers suspect an eighth planet beyond uranus? how did they determine where to look for it? construct the correct explanation.
drag the terms on the left to the appropriate blanks on the right to complete the sentences.
brightness - mass - orbit - position - kepler's third law - value - law of gravity
observation of uranus showed small but significant discrepancy between its predicted ______ and its actual ________ , which could mean that another object perturbed its motion.
in the mid-1800s, astronomers used the ________ to predict where a planet would have to be.
Astronomers suspected an eighth planet beyond Uranus because of the irregularities in the motion of Uranus suggested that gravity from another planet was affecting it.
Who is an astronaut?It should be noted that an astronaut simply means an individual who is trained to travel in spacecrafts.
In this case, astronomers suspected an eighth planet beyond Uranus because of the irregularities in the motion of Uranus suggested that gravity from another planet was affecting it.
In mid-1800s, astronomers used the orbits of most asteroids to predict where a planet would have to be.
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URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
The boy that would hear a rock fall off of a clip a kilometer away is a boy who is lying down with his ear to the ground. Thus, the correct option for this question is D.
What is the mechanism of rock fall?Rockfall processes can be described as the detachment and downslope movement of individual rocks as well as intact rock masses that fragment during their fall into blocks with variable dimensions. Rock masses that fall down the slope are mostly characterized as rock avalanches.
According to the context of this question, if a boy is lying down on the ground with his ear touching the ground seems to experience a sense of vibration when a rock is fallen a kilometer away. This is because the ear is more sensitive to the vibrations that are caused by the falling off of rocks.
Therefore, the boy that would hear a rock fall off of a clip a kilometer away is a boy who is lying down with his ear to the ground. Thus, the correct option for this question is D.
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90. An uranium nucleus (at rest) undergoes fission and splits into two fragments, one heavy and the other light. Which fragment is moving faster after the fission?
Answer:
Explanation:
No external force is acting on uranium nucleus so we can apply law of conservation of momentum . If M and m be the mass of bigger and smaller fragments respectively and V and v be their velocity after fission , Total momentum after fission = total momentum before fission
MV - mv = 0 , since the nucleus was at rest , its momentum before fission is zero . negative sign of mv is taken because smaller fragment will move in opposite direction to that of bigger fragment .
MV = mv
M / m = v / V
M > m
Hence,
v > V
So velocity of smaller fragment will be higher .
Seventh grade QQ.4 Commas with coordinate adjectives 5L5
Insert one comma to separate the coordinate adjectives.
Typical golf caddie responsibilities include carrying clubs, cleaning balls,
calculating distances and scores, and even replacing the divots-pieces of
grass and dirt that have been cut loose by the swift forceful strikes of golf
clubs.
Answer:
Typical golf caddie responsibilities include carrying clubs, cleaning balls,
calculating distances and scores, and even replacing the divots - pieces of
grass and dirt that have been cut loose by the swift, forceful strikes of golf
clubs.
Energy is...
a. motion
b. stored power as heat
c. power
d. the ability to do work or cause change?
Answer:
c
Explanation:
Answer:
it's d
Explanation:
because if you had energy you could do anything but without energy you won't be able to so anything
hope this helps
A 83 kg man is resting on the roof top of his house. If he has a potential energy of
56930 J, what is the height of roof top.
100 m
50m
70m
95m
Answer:
It would be 70m
Explanation:
I hope this helps!
a 873-kg (1930-lb) dragster, starting from rest completes a 403.1-m (0.2519-mile) run in 4.935 s. if the car had a constant acceleration, what would be its acceleration and final velocity? m/s2
The acceleration of the dragster is 33.1 m/s².
The final velocity of the dragster is 163.4 m/s.
What is the acceleration of the dragster?
The acceleration of the dragster is calculated by applying the following kinematic equation.
s = ut + ¹/₂at²
where;
u is the initial velocity of the dragstera is the accelerations is the distance traveledt is the time of motions = 0 + ¹/₂at²
a = ( 2s ) / t²
a = (2 x 403.1) / (4.935²)
a = 33.1 ms/²
The final velocity of the dragster is calculated as follows;
v² = u² + 2as
v² = 0 + 2(33.1)(403.1)
v² = 26,685.22
v = √ (26,685.22)
v = 163.4 m/s
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Which statement is true?
A) As the electric current through a wire increases, the magnetic field around the wire
becomes stronger.
B) As the electric current through a wire increases, the magnetic field around the wire becomes weaker.
C) As the electric current through a wire increases, the magnetic field around the wire is unaffected.
D) As the electric current through a wire decreases, the magnetic field around the wire becomes stronger.
As the electric current through a wire increases, the magnetic field around the wire becomes stronger. (A)
(That's the reason why, if you want to use your junk-yard electromagnet to lift junk cars, you have to run a huge current through it.)
What do we call objects that form like a star (from a contracting gas cloud), but do not have enough mass to ignite hydrogen fusion in their centers
A brown dwarf is a starlike body that do do not have enough mass to ignite hydrogen fusion in their centers.
What is a brown dwarf?Brown dwarf refer to a body of substellar that is not huge or big enough to undergo nuclear fusion of o hydrogen into helium in their cores. This formed when there is contraction of gases in the intercellar spaces. The have a mass between 13 to 80 times that of Jupiter.
Therefore, brown dwarf is a starlike body that do don't not have enough mass to ignite hydrogen fusion in their centers.
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A worker leaves home at 9:00 AM, travels 40 km to the office, and then returns home at 5:00 PM. What is the magnitude of the worker's displacement during this 8-hour span of time?
Answer:
The answer is 0km
Explanation:
The absence of any mechanical linkage between the throttle pedal and the throttle body requires the use of a _______ motor.
A. Throttle
B. AC
C. DC
D. Stepper
The absence of any mechanical linkage between the throttle pedal and the throttle body requires the use of a . Stepper motor. Option D.
In modern vehicles, the throttle system is commonly controlled electronically using a stepper motor. A stepper motor is a type of electric motor that moves in discrete steps or increments, as directed by an electronic control unit (ECU) based on inputs from sensors, including the throttle pedal position sensor.
With the use of a stepper motor, there is no direct mechanical connection between the throttle pedal and the throttle body. Instead, the ECU interprets the position of the throttle pedal and commands the stepper motor to move the throttle plate accordingly, regulating the airflow into the engine.
The stepper motor provides precise control over the throttle position, allowing for smooth and accurate adjustments based on driving conditions and engine demands. The ECU can precisely control the throttle opening angle and adjust it in real-time, optimizing fuel efficiency, emissions, and overall engine performance.
Stepper motors are particularly suitable for this application as they can hold their position without power, provide precise control over angular displacement, and offer good torque characteristics.
They are commonly used in drive-by-wire throttle systems, where electronic signals replace mechanical linkages, providing improved responsiveness and integration with other vehicle control systems.
In summary, the absence of a mechanical linkage between the throttle pedal and the throttle body necessitates the use of a stepper motor for electronic throttle control, allowing for accurate and efficient regulation of the engine's air intake. So Option D is correct .
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If you exert a force f on an object which has a much greater mass than you do, the force which the object exerts on you will?
If you exert force on an inanimate item, you will also be able to calculate the force that the object will apply to you, which will be opposing and equal to your own.
What would happen if you applied a force that was smaller than the object's mass?In order to accelerate a heavier (more massive) item in motion, more force must be exerted. When two objects are subjected to the same force, the smaller mass item will change speeds more quickly.
An item can alter its size or shape, begin moving, stop moving, accelerate, or decelerate as a result of a force acting on it. When two things contact, they exert pressures on one another that are identical in size but directed in the opposite direction
The action-reaction law is another name for this rule.
When just one body decides the strength and direction of the force, the force that body exerts is referred to as the "action," and the force that the other body exerts in a similar but opposite direction is referred to as the "reaction."
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How does the euglena differ from the paramecium? Question 20 options: Euglena are photosynthetic. Paramecia use flagella to move. Paramecia have an "eye spot" to detect light. Euglena have both a macronucleus and a micronucleus
Answer: Euglena are photosynthetic
Explanation: USA test prep
What factors determine the distance at which two atoms form a bond ?
Answer:
The length of the bond is determined by the number of bonded electrons (the bond order). The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length. Generally, the length of the bond between two atoms is approximately the sum of the covalent radii of the two atoms.
Explanation:
What is the acceleration of a car making a turn in a circle with a 100m radius traveling at
17m/s?
Answer:
2.89 m/s²
Explanation:
From the question given above, the following data were obtained:
Radius (r) = 100 m
Velocity (v) = 17 m/s
Acceleration (a) =.?
The acceleration of a circular motion is defined by:
a = v²/r
Where:
a is the acceleration.
v is the velocity.
r is the radius.
With the above formula, we can obtain the acceleration of the car as follow:
Radius (r) = 100 m
Velocity (v) = 17 m/s
Acceleration (a) =.?
a = v²/r
a = 17²/ 100
a = 289/100
a = 2.89 m/s²
Therefore, the acceleration of the car is 2.89 m/s²
Students want to make a scale model of the Earth and Moon system that shows correctly-scaled sizes and distances. Here are some guidelines they have to follow.
It has to be shown in the classroom, and the classroom is 51 square meters in area.
It has to be easily moved around since orbital motion and rotations will be shown.
It cannot cause damage if it is dropped.
All the students in the class should be able to see it from their desks.
Four different students came up with different designs. The designs and characteristics are shown in the table below.
Which design best satisfies the criteria and constraints of this Earth-Moon model?
A.
design 1
B.
design 3
C.
design 2
D.
design 4
Answer:
Design #3 seems to best fit the requirements (2 sq m).
The others are too bulky.
How do you find average velocity during free fall?
What new process was added to our theory of planet formation to explain these surprising extrasolar planets? condensation evaporation disk formation migration
The correct option is D, The process that was added to our theory of planet formation to explain the surprising extrasolar planets is migration.
A planet is a celestial body that orbits around a star, is spherical in shape due to its own gravity, and has cleared its orbit of other debris. The eight planets in our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Planets are formed from the same gas and dust that surrounds a young star, called a protoplanetary disk. Over time, this material comes together due to gravitational attraction and forms into larger and larger bodies, eventually creating planets. Planets can have various features such as atmospheres, moons, and rings. They also have different characteristics such as size, composition, and temperature, which can affect their ability to support life.
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"Angel Falls in southeastern Venezuela is the highest uninterrupted waterfall in the world, dropping 979 m (3212 ft). Ignoring air resistance, it would take 14 s for the water to fall from the lip of the falls to the river below. If the water lands 50 m from the base of the verti-cal cliff, what was its horizontal speed at the top"
Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is \(v = 3.57 \ m/s \)
Explanation:
From the question we are told that
The depth is \(d = 979 \ m\)
The time taken for water to fall to below the river is \(t = 14 \ s\)
The horizontal distance from the base of the vertical cliff is \(h = 50 \ m\)
Generally the horizontal speed at the top is mathematically represented as
\(v = \frac{h}{t}\)
=> \(v = \frac{ 50}{ 14 }\)
=> \(v = 3.57 \ m/s \)
igure-8 coil, which is believed to stimulate about a 2- to 3-cm2 area of the brain at a depth of about 2 cm from the coil surface.
The figure-8 coil stimulates approximately a 2- to 3-cm2 area of the brain at a depth of around 2 cm from the coil surface.
What is the area of brain stimulation covered by the figure-8 coil and at what depth?The figure-8 coil, a commonly used type of transcranial magnetic stimulation (TMS) coil, is designed to stimulate a specific area of the brain. It is believed to effectively stimulate an area of approximately 2 to 3 square centimeters on the brain's surface. The stimulation depth achieved by the figure-8 coil is about 2 centimeters beneath the coil's surface.
During a TMS session, an electrical current is passed through the figure-8 coil, generating a magnetic field. When the coil is placed on the scalp, the magnetic field penetrates the skull and induces electrical currents in the underlying brain tissue. The specific shape and configuration of the figure-8 coil help focus the magnetic field, leading to a more targeted stimulation of the desired brain area.
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compare and contrast motion position and distance
Explanation:
Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
Warm air is _____ dense than cold air, and warm air holds _____ moisture than cold air.
Answer:
Warm air is less dense than cold air, and warm air holds more moisture than cold air.
Explanation:
HOPE THIS HELPS AND HAVE A NICE DAY <3
The kinetic energy of an object increases as its A height B. speed increases C. volume D. potential energy
Answer:
As its speed increases.......
The kinetic energy of an object increases as its speed increases. So, option B.
What is meant by kinetic energy ?The type of energy that an object possesses as a result of its motion is called kinetic energy.
The kinetic energy of an object is described as the amount of effort required to accelerate a body of a specific mass from rest to its specified velocity.
The body keeps its kinetic energy after gaining it during acceleration, barring changes in speed.
When slowing down from its current pace to a condition of rest, the body expends the same amount of energy.
A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.
The kinetic energy of the object,
KE = 1/mv²
where m is the mass and v is the speed of the object.
Since, the mass is a constant, the increase in speed can increase the kinetic energy of the object.
Hence,
The kinetic energy of an object increases as its speed increases.
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How does the temp of water change when it is heated on a stove top and it begins to boil.
Answer:
The temperature will no longer rise with the heat because the energy. When the water is boiled on the steam, the temperature rises when heat is given
Explanation:
The lens that is within the eyepiece of the light microscope is called the.
The lens that is within the eyepiece of the light microscope is called the ocular lens.
The ocular lens helps to magnify the image that is produced by the objective lens and allows the user to view the specimen in greater detail. Essentially, the ocular lens functions similarly to a magnifying glass or a pair of reading glasses, providing additional magnification to enhance the user's ability to observe the specimen under study.
The lens within the eyepiece of the light microscope is called the ocular lens. The ocular lens, together with the objective lens, helps to magnify the sample under examination and produce a clear, magnified image for the user.
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A hole is now drilled through the side of the pipe and air is blown again into the pipe through the same opening. The fundamental frequency of the sound wave generated in the pipe is now.
The fundamental frequency of the sound wave generated in the pipe is now higher than before.
Open organ pipes are pipes that are open at both ends and allow sound to pass through them. A closed organ pipe is a pipe organ that is open at one end and closed at the other allowing sound to pass through. The speed of sound changes by about 6 meters per second per degree. Sound is transmitted through the air by compression waves that rely on small-scale molecules to transfer energy to each other.
The higher the temperature the higher the energy of air molecules so the faster they vibrate. Frequency and energy decrease with increasing wavelength. From these equations, we can see that the wavelength decreases as the frequency increases. The lower the frequency, the longer the wavelength. There are two basic types of waves mechanical waves and electromagnetic waves.
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A spherical balloon has a radius of 7,15 m and is filled with helium. How large a cargo can it lift l, assuming that the skin and structure of the balloon have a mass of 930 kg
Answer:
The lifting force of a balloon is equal to the weight of the air it displaces, minus the weight of the balloon itself and any cargo it is carrying. We can calculate the lifting force using the following formula:
Lifting force = (4/3) x π x r^3 x ρair x g - m_balloon - m_cargo
where:
- r is the radius of the balloon (in meters)
- ρair is the density of air (in kg/m^3), which we'll assume is 1.2 kg/m^3 at sea level and standard temperature
- g is the acceleration due to gravity (in m/s^2), which we'll assume is 9.81 m/s^2
- m_balloon is the mass of the balloon (in kg)
- m_cargo is the mass of the cargo (in kg)
- π is pi (approximately 3.14)
Substituting in the values given in the problem, we get:
Lifting force = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - m_cargo
Simplifying and solving for m_cargo, we get:
m_cargo = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - Lifting force
Plugging in the lifting force we want the balloon to have, which we'll call L, we get:
m_cargo = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - L
Assuming we want the balloon to lift 5000 kg of cargo, we can solve for L:
L = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - 5000 kg
L = 281,581 N
Therefore, to lift 5000 kg of cargo, the balloon needs to have a lifting force of approximately 281,581 N.
If two resistors each of 40 ohms are connected in series what will be its equivalent resistance. If the same resistors are connected in parallel combination what will be the equivalent resistance? ANSWER CORRECTLY, IWILL MARK IT BRAINLIEST.
Explanation:
In case the resistors are in series
R =R1 + R2
R = 40 ohm + 40 ohm
R = 80 ohm
In case the resistors are in parallel
R = 1/R1 + 1/R2
R = 1/40 + 1/40
R = 2/40 ohm
R = 1/20 ohm or R = 0.05 ohm
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Answer:
dtwtwerEtbWt
Explanation:
bwtrbtWbTW4TBW4tbW4T4t
The swimmer swims in a straight line in the pool. Her motion is shown on the following graph of position 2
VS. time t.
*(m)
2
10
12
Select the correct anwer from each drop-down menu. When a looe brick i reting on a wall, it ha
[ Select ]
(. )kinetic (. )potential (. )both kinetic and potential energy. When the brick i puhed off the wall and i falling down, the amount of
[ Select ]
(. )kinetic (. )potential (. )both kinetic and potential energy i decreaing while the amount of
[ Select ]
(. )kinetic (. )potential (. )both kinetic and potential energy i increaing
When a loose brick is resting on a wall, it has potential energy. When the brick is pushed off the wall and is falling down, the amount of potential energy is decreasing while the amount of kinetic energy is increasing.
Kinetic energy is motion––of waves, electrons, atoms, molecules, substances, and objects. Potential energy is stored energy and the energy of position––gravitational energy. There are several forms of potential energy.
Conservation of energy is not saving energy. The law of conservation of energy says that energy is neither created nor destroyed. When we use energy, it doesn’t disappear. We change it from one form of energy into another.
A car engine burns gasoline, converting the chemical energy in gasoline into mechanical energy. Solar cells change radiant energy into electrical energy. Energy changes form, but the total amount of energy in the universe stays the same.
Energy efficiency is the amount of useful energy you get from a system. A perfect, energy-efficient machine would change all the energy put in it into useful work—an impossible dream. Converting one form of energy into another form always involves a loss of usable energy.
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