What is the problem with using your boat's engine to drive it onto a trailer?
Driving your boat with its engine onto a trailer can cause uncontrollable movement, potential damage, erosion of the launch area, and dangerous propeller strikes.
Explanation:There are several problems related to using your boat's engine to drive it onto a trailer. Firstly, the propellers of the boat create a turbulent water flow that will provide thrust in an uncontrolled manner, likely leading to imprecise movement and potential damage to either the boat or the trailer. Moreover, the propeller wash can cause erosion and possibly damage the launching area. Secondly, using the engine to drive onto the trailer may lead to prop strike, where the boat's propeller might come into contact with the ramp, causing significant damage to the motor.
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Which formula can be used to find the tangential speed of an orbiting object?
Answer:
The answer on ED is A
Explanation:
At 600.0 K the rate constant is 6.1× 10–8 s–1. What is the value of the rate constant at 800.0 K?
The cold protective response may be activated when a person's face is submerged in water that is less than ________ degrees fahrenheit.
If your vehicle bounces a lot after a bump or is hard to control on turns, you may have a problem with __________ system.
Which moon of uranus has the greatest variety of landforms of any body yet examined?
Miranda is the right answer
A dog has a mass of 12 kg. What is its weight? Round your answer to the nearest whole number. The dog weighs ___ N.
Why does helium exhibit more visible emission lines than hydrogen?
The helium atom exhibit more visible emission lines than hydrogen atom as hydrogen has one electron per atom, while helium atom has two electrons per atom.
What are emission lines?
Emission lines are generally used to determine the atoms and the molecules.
A emission line is formed when a electron falls behind the low-level state of energy by freeing a photon.
Difference between the helium visible emission lines and hydrogen visible emission lines-
Main difference between the helium visible emission lines and hydrogen visible emission lines, that the helium visible emission exhibit more lines.These emission lines are the formations of wavelength of electromagnetic radiation, emitted by the helium and hydrogen atom.This is because hydrogen has one electron per atom, while helium atom has two electrons per atom.Hence, the helium atom exhibit more visible emission lines than hydrogen atom as hydrogen has one electron per atom, while helium atom has two electrons per atom.
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Helium exhibits more visible emission lines than hydrogen due to its complex electron energy level structure. As helium has two electrons and more possible transitions, it results in more visible lines in its emission spectrum compared to hydrogen.
Explanation:Helium exhibits more visible emission lines than hydrogen due to the complexity of its electron energy level structure. When energy is absorbed by an atom, electrons get excited and move to higher orbitals. When these electrons transition back to lower energy levels, they emit energy in the form of light at specific frequencies, which are visible as emission lines in an emission spectrum.
For Hydrogen, in its ground state, no electrons are in the higher-energy levels required to produce either emission or absorption lines in the visible part of the Balmer series, therefore, the spectral features of hydrogen in the visible range are limited primarily to the Balmer line that only excited hydrogen atoms produce.
Helium, on the other hand, has two electrons in different energy levels. As such, there are more possible transitions and hence more lines visible in its emission spectrum.
This concept is fundamental to our understanding of interstellar mediums and the chemical composition of celestial bodies. Recognizing the unique spectral features in visible light allows us to decode the mysteries of the universe.
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If the distance between two asteroids is doubled, the gravitational force they exert on each other will.
The gravitational force the asteroids exert on each other will be one fourth of their initial force.
What is gravitational force?Any two bodies will be attracted to one another by the force of gravity, also known as gravity. There is an attraction between every thing in the cosmos, but most of the time it is too faint to be noticed due to the extreme distance between the objects. Furthermore, although the influence of gravity is weaker as objects are moved away, its range is infinite.
We know that, gravitational force acting between two bodies,
F=[tex]\frac{ G m_1 m_2}{r^2}[/tex]
Where, G = universal gravitational constant
m₁ and m₂ are masses of the two bodies and r is distance between them.
Let, the masses of the two asteroids are M₁ and M₂ and initial distance between them is R.
Hence, gravitational force they exert on each other, F₁ =[tex]\frac{ G M_1 M_2}{R^2}[/tex]
Now, when the distance between two asteroids is doubled, that is 2R, the gravitational force they exert on each other will, F₂ = [tex]\frac{ G M_1 M_2}{(2R)^2}[/tex] = [tex]\frac{1}{4}[/tex] [tex]\frac{ G M_1 M_2}{R^2}[/tex] = [tex]\frac{1}{4}[/tex] F₁
Hence, the final gravitational force is one-fourth of the initial one.
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(02.01)triangle xyz slides 2 units left and 1 unit down on the coordinate plane. if the original measure of angle x was 40 degrees, what is the measure of angle x'?
Let us say that triangle XYZ has sides of XY, YZ, and ZX.
Each of the corners X, Y, and Z are located at their own (x, y) points.
If all of the triangle are transformed through translation by a movement of 2 units left and 1 unit down on the coordinate plane then we generate a triangle X’Y’Z’.
Then each of the corners X’, Y’ and Z’ are now located at (x – 2, y – 1) coordinates.
Since all of the corners were moved then we can also say that:
XY is congruent to X’Y’
YZ is congruent to Y’Z’
ZX is congruent to Z’X’
Since all sides are congruent, therefore all angles are also congruent.
Therefore the measure of angle x’ is equal to the measure of angle x.
Answer:
40 degrees
You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 5.00 s after it was thrown. what is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? ignore air resistance.
The inner planets—mercury, venus, earth, and mars—are believed to have been formed by _____. answers
Answer: These planets are formed by rocks.
Explanation:
There are 2 types of planets in Our Solar System:
1. Inner planets: There are 4 planets which are considered as inner planets, these are Mercury, Venus, Earth and Mars. These planets are small and have rocky surface. Their time of revolution around the Sun is less than the outer ones. These planets have maximum number of moon till 2.
2. Outer planets: There are 4 planets which are considered as outer planets, these are Jupiter, Saturn, Uranus and Neptune. These planets are large and gaseous planets. Their time of revolution around the Sun is more than the inner ones. These planets have many moon.
Hence, the inner planets are believed to be formed of rocks.
Which is the best example of Newton's Second Law of Motion?
A student has on roller skates and he decides to push against the railing. He immediately begins to roll backwards.
A small, lightweight ball and a large, heavy ball are dropped off of a roof. They both strike the ground at the same time.
A baseball player hits a baseball that is pitched to him. The ball immediately soars back in the direction of the pitcher.
You are riding in a car that makes a quick right turn. You immediately slide across the back seat.
The baseball player hitting a baseball is the best example of Newton's Second Law of Motion, as the force exerted on the ball causes it to move in the opposite direction with the same magnitude.
Explanation:The best example of Newton's Second Law of Motion is the baseball player hitting a baseball that is pitched to him. When the player hits the ball, the force exerted on the ball causes it to move in the opposite direction with the same magnitude. This is known as the law of action and reaction, which is a part of Newton's Second Law of Motion.
Another example of Newton's Second Law is a student on roller skates pushing against a railing and immediately rolling backwards. The force exerted by the student on the railing causes an equal but opposite force on the student, resulting in the backward motion.
Lastly, the example of a car making a quick right turn and the passenger sliding across the back seat can be considered an example of Newton's Second Law. The passenger tends to continue moving in a straight line due to inertia but is pushed to the side due to the force of the car turning.
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Slow pain originating from an internal organ is often perceived as coming from an area of the body totally unrelated to the source. this is known as
Explain how the bonds between water molecules affect its properties
A landscaper is making a retaining wall to shore up the side of a hill. to ensure against collapse, the wall should make an angle 75° with the ground. how far from the base of the hill is the base of a 15-foot slanted wall?
Final answer:
To determine how far the base of a 15-foot slanted retaining wall is from the base of a hill, we can use the cosine of the angle (75°) the wall makes with the ground. The calculation shows the base of the wall is approximately 3.88 feet from the hill's base.
Explanation:
To find out how far the base of a 15-foot slanted wall, which is supposed to shore up the side of a hill at a 75° angle with the ground, is from the base of the hill, we can use trigonometry. Specifically, we can use the cosine function which is defined in a right-angled triangle as the adjacent side (base) over the hypotenuse (the slanted wall). The angle given is 75° and the length of the slanted wall (hypotenuse) is 15 feet.
Thus, the formula to calculate the distance from the base of the hill (base of the wall) is:
Cos(75°) = Base / 15 feet
Rearranging the formula to solve for the base gives:
Base = 15 feet × Cos(75°)
Using a calculator, Cos(75°) is approximately 0.2588. Therefore:
Base ≈ 15 feet × 0.2588 ≈ 3.882 feet
This means the base of the wall is approximately 3.88 feet from the base of the hill.
what factors determine the magnitude of the electric force between two particles ?
a. charge and distance
b. mass and distance
c. charge and density
d. mass and charge
Answer: Charge and distance
Explanation:
A 1400 kg car is approaching the hill shown in (Figure 1) at 11 m/s when it suddenly runs out of gas. Neglect any friction.
The car, running out of gas and hence momentum, will convert its initial kinetic energy into gravitational potential energy as it moves uphill. In the absence of friction, it will ascend approximately 6.27 meters up the hill before it stops.
Explanation:The subject of the question is related to physics, particularly to the principle of conservation of energy. When the car runs out of gas, its initial kinetic energy is converted into potential energy as it goes uphill. The initial kinetic energy of the car is given by 1/2*m*v^2 kg (where m is the mass and v is the velocity of the car) which equals 1/2*1400*11^2 = 85,800 Joules.
The car will continue to move up the hill until all this kinetic energy is converted into gravitational potential energy, given by m*g*h = 1400*9.8*h, where g is the acceleration due to gravity and h is the height the car reaches up the hill. Setting these two equations equal allows us to determine how high the car will go: 85,800 = 1400*9.8*h, which gives h = 85,800/(1400*9.8) = 6.27 meters. Therefore, in the absence of friction, the car will move approximately 6.27 meters up the hill before coming to a stop.
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The car can climb a hill approximately 6.17 meters in height before coming to a complete stop due to its kinetic energy. This is calculated using the principles of energy conservation and the formulas for kinetic and potential energy.
Explanation:This physicist question is about the concept of conservation of energy. The 1400 kg car runs out of gas, but it maintains its kinetic energy. This kinetic energy will then be converted into potential energy as the car climbs the hill. The calculation of how high the car will climb can be done using the formula for kinetic energy, which is 0.5*m*v2, and the formula for gravitational potential energy, m*g*h.
First, we determine the initial kinetic energy of the car, which comes out to be 0.5*1400 kg*(11 m/s)2 = 85,250 Joules. This will be equal to the potential energy at the peak of the hill; thus, we have the equation 1400 kg*9.8 m/s2*h = 85,250 Joules, so solving for height, we find h = 85,250/ (1400*9.8) = approximately 6.17 meters. So, the car should be able to climb a hill of approximately 6.17 meters before it comes to a stop.
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Steve and Carl are driving from Scranton to Bridgeport, a distance of 180 miles. If their speed averages 60 miles an hour, how long will it take them to get there? A. 3.5 hours B. 2.5 hours C. 4 hours D. 3 hours
Calculate number of photons from energy and wavelength
A bird flew16 km west in 5 hours, then flew 20 km east in 6 hours. what was the birdâs velocity?
To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time.
speed = distance/time
Discuss how electromagnets have been created that are strong enough to pick up cars in a wrecking yard and are able to be switched off, dropped the cars onto a scrap pile to be crushed.
An inductor is just a coil of wire with magnetic properties. It is a device that stores electromotive force or energy in the form of magnetic field. A current yields a magnetic field around it through a conductor. The pattern of flux for this magnetic field would be the number of concentric circle perpendicular to the detection of current. The capacity of the inductor is affected by the number of coils which would give more inductance, the material that is used for the coil, the cross sectional area of the coil and the length of the coil. For instance you have an 8 meters diameter coil with seven loops of wire. You place the coil on an area where there is a parked car. The inductance of the coil will be much larger compared to the coil without a parked car nearby because of the presence of the steel from the car. It changes the magnetic field of the coil because it acts as a core of the inductor.
Strontium-85 has a half-life of 65 days. how long will it take for the radiation level of strontium-85 to drop to one-fourth of its original level?
Answer:
130 days
Explanation:
Strontium-85 has a half-life of 65 days. how long will it take for the radiation level of strontium-85 to drop to one-fourth of its original level?
Strontium-85 is a radioactive element. so it takes 65days for one strontium of a particular mass to decrease to half of its initial size
Half life is the time taken for a radioactive element to decrease to half of its initial size. it decays by half every 65 days.
from 1 to 1/2 = 65 days
from 1/2 to 1/4 =65 days
from 1/4 to 1/8 = 65 days
from 1/8 to 1/16 = 65 days
total time taken to decay from original amount to 1/4 is two half lives =
65+65=130 days
The time it will take for the radiation level of Strontium-85 to drop to one-fourth of its original level is 130 days.
To calculate the time it will take for Strontium-85 to drop to one-fourth of its original value, we use the formula below.
Formula:
R = [tex]2^{a/n}[/tex](R')................ Equation 1Where:
R = Original amount of Strontium-85R' = Amount of Strontium-85 left after decaya = Total timen = half-life.From the question,
Given:
n = 65 daysAssuming,
R = y R' = y/4Substitute the given values and the assumed values into equation 1
y = y/4([tex]2^{a/65}[/tex])Solve for a
y(4/y) = [tex]2^{a/65}[/tex]4 = [tex]2^{a/65}[/tex]2² = [tex]2^{a/65}[/tex]Equating the base,
2 = a/65a = 65×2a = 130 days.Hence, The time it will take for the radiation level of Strontium-85 to drop to one-fourth of its original level is 130 days.
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How to separate sand and finely ground polystyrene foam?
whats an example of flexible thinking?
"The White Shark" allows riders to start from rest on a tube and then slide down a 44 meter slide. It takes the rider 6.2 seconds to reach the bottom. What is the average acceleration of the ride?
A. 2.3 m/s^2 B. 3.4 m/s^2 C. 4.2 m/s^2 D. 5.0 m/s^2
I did (44 - 0)/6.2 but that's not any of the answers??
Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.
Answer: Mercury is used for making thermometers, barometers, diffusion pumps, and other laboratory instruments. It can also be used to make mercury-vapor lamps, advertising signs, and mercury switches as well as pesticides, dental preparations, batteries, and catalysts.
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By what factor must the sound intensity be increased to increase the sound intensity level by 12.5 db ?
The net force on a car is zero in both the horizontal and vertical directions. Which two situations could be true about the motion of the car?
Answer:
The car is parked.
The car is moving at a fixed speed and direction.
Explanation:
The car is either at rest, or traveling at a constant velocity.
Hope this helps. Good luck!
Scientists think that the __________, made of liquid iron and nickel, moves to produce Earth’s magnetic field. a. crust b. mantle c. outer core d. inner core Please select the best answer from the choices provided
outer core is your answer
Answer:
c. outer core
Explanation:
The inner core of the Earth is solid and contains iron. The outer core is in molten state and contains iron and nickel in liquid state. As the Earth spins, the domains of this magnetic material aligned in single direction generating huge magnetic field. Thus, earth acts like an enormous bar magnet.
Correct option is c. outer core.