Answer:
it is going down down down down the hill it goes so the roller coaster will then be down to a 0 m
help please! btw this is science
Answer:
I hope this helps if not I am sorry good luck
Explanation:
The food of the foxes is the voles and if the their population went down of course the foxes would too if the voles went extinct what would the foxes eat surley they would die since their food source is shortened .
Which of the following conducting wires has the least resistance?
A. Steel wire at room temperature
B. Copper wire at room temperature
C. Steel wire at higher temperature
D. Copper wire at higher temperature
Answer:
Choice B. If the dimensions of the wires among the choices are the same, the copper one at room temperature would have the least electrical resistance.
Explanation:
Under room temperature, the electrical conductivity of copper is much better than that of steel.
Assume that the dimensions of the four wires are the same. Under the same temperature, the electrical resistance of the copper wire would be lower than that of the steel wire. Thus, [tex]B < A[/tex].
The electrical resistance of metal conductors tend to increase as temperature increases.
Therefore, the resistance of a copper wire at room temperature would be higher than the resistance of the same wire at a higher temperature. Thus, [tex]B < D[/tex].
Likewise, the resistance of the same steel wire would be higher at higher temperature. Thus, [tex]A < C[/tex].
Overall, [tex]B < A < C[/tex] and [tex]B < D[/tex]. Therefore, the copper wire at room temperature would have the least electric resistance among all four choices.
When the net force that acts on a hockey puck is 10 N, the puck accelerates at a rate of 50 m/s2. Determine the mass of the puck. (a) 0.2 kg (c) 5 kg (e) 50 kg (b) 1.0 kg (d) 10 kg
The correct answer is option A) 0.2 kg
How to find net force?The net force is the sum of all forces acting on an object. The net force can be calculated using Newton's second law, which states that F = ma, where: F is the net force. m is the mass of the object.
Given:
Force = 10N
a = 50 m/s
By using net force formula:
F = ma
m = 10 / 50 = 0.2 kg
What is the net force on this object?
The net force on an object is the combined effect (the sum) of all the pushing and pulling forces actually acting on the object. If the forces pushing or pulling on an object are not balanced (a net force acts) then the object will accelerate in the direction of the net force.
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you must exert force of 4.5N on a 50kg book to slide it across a table. what is the speed?
Force exerted by an object equals mass times acceleration of that object: F = m * a .
The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. A newton-meter is the same thing as a joule, so the units for work are the same as those for energy – joules.
The force (F) required to move an object of mass (m) with an acceleration (a) is given by the formula F = m x a. So, force = mass multiplied by acceleration. As an example, if the mass of the object is given to be 3 pounds, you'll need to convert those pounds to kilograms.
One kilogram is equal to 9.81 Newtons. To convert Newtons to kilograms, divide by 9.81. For instance, 20 Newtons would be equivalent to 20/9.81 or 2.04 kilograms.
Hope it helpsHow much force is required to swing a 3 kg mass in a circle with a radius of 1.5 m at
a speed of 5 m/s?
F =ma.
The force is required to swing the mass in a circular path with the given radius and speed is 50 Newtons.
Given the data in the question;
Mass; [tex]m = 3kg[/tex]Radius; [tex]r = 1.5m[/tex]Speed; [tex]v = 5m/s[/tex]Force; [tex]F =\ ?[/tex]
From the Newton's second law of motion:
[tex]F = ma[/tex]
Where F is force applied, m is mass and a is acceleration
Now force a circular motion Centripetal Acceleration is expressed as:
[tex]a_c = \frac{v^2}{r}[/tex]
Hence, force is required to swing the mass in a circular path will be:
[tex]F = m * a_c\\\\F = m * \frac{v^2}{r}[/tex]
We substitute our given values into the equation;
[tex]F = 3kg * \frac{(5m/s)^2}{1.5m}\\\\F = 3kg * \frac{25m^2/s^2}{1.5m}\\\\F = 50 kgm/s^2\\\\F = 50N[/tex]
Therefore, force is required to swing the mass in a circular path with the given radius and speed is 50 Newtons.
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A man is whirling a 0.25 kg ball on a 1.5 m long string at 3 m/s. Find the centripetal acceleration of this ball.
O 13.5 m/s2
0 0.5 m/s2
m.
2 m/s2
6 m/s2
The centripetal acceleration of the ball been whirled in a circular path is 6m/s².
Hence, Option D) 6m/s² is the
Given the data in the question:
Mass of ball; [tex]m = 0.25kg[/tex]Length of string or radius; [tex]r = 1.5m[/tex]Speed; [tex]v = 3m/s[/tex]Centripetal acceleration is the acceleration of a particle moving in a circular path. It is expressed as:
[tex]a_c = \frac{v^2}{r}[/tex]
Where [tex]a_c[/tex] is the Centripetal acceleration, v is the speed of the motion and r is the length of the string or radius of the circular pattern.
We substitute our given values into the equation
[tex]a_c = \frac{(3m/s)^2}{1.5m}\\\\a_c = \frac{9m^2/s^2}{1.5m}\\\\a_c = 6m/s^2[/tex]
The centripetal acceleration of the ball been whirled in a circular path is 6m/s².
Hence, Option D) 6m/s² is the correct answer.
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If two objects crash into each other, what happens? Are both objects affected? How?
Explanation:
In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction
leah paid 42.90 for 5 gallons of gas what was the price per gallon of gas leah paid?
Answer:
the price per gallon of gas leah paid is 8.58
Explanation:
42.90/5=8.58
What is an effect of gravity?
A. An effect of gravity is to decrease the mass of people standing on the earth's surface.
B. An effect of gravity is to increase the mass of people standing on the earth's surface.
C. An effect of gravity is to attract people on the earth's surface towards the center of the earth.
D. An effect of gravity is to attract people on the earth's surface towards the earth's atmosphere.
Answer:
C. An effect of gravity is to attract people on the earth's surface towards the center of the earth.
Explanation:
The answer is not A. Gravity does not decrease the amount of matter you have.The answer is not B. Gravity does not increase mass either.The answer is not D. Gravity pulls you farther than just the earth's atmosphere.what feedback loops is in a drought
Answer:
it is positive feedback loop
Explanation:
It's a phenomenon scientists call a positive feedback loop: deforestation causes drought, which in turn, worsens deforestation, and so on, intensifying the effect. The study concluded that deforestation causes 4% of drought, while drought accounts for 0.13% of deforestation per millimeter of rain in the Amazon biome.
a section of hollow pipe and a solid cylinder have the same radius, mass, and length. they both rotate about their long central axes with the same angular speed. which object has the higher rotational kinetic energy?
Answer:
Teniendo dos tuberías, una hueca y otra sólida, con la misma masa, radio y longitud, ambas poseen la misma rapidez angular, entonces el cuerpo hueco tendrá mayor energía cinética rotacional que la tubería sólida, esto es debido a que el tubo hueco tiene mayor inercia rotacional.
La ecuación de energía rotacional viene dada como:
Er = (1/2)·I·ω
De esta manera tenemos que el tubo hueco tiene mayor inercia rotacional que el tubo sólido, por ende, mayor energía.
Explanation:
Paying off your debts will most likely
your credit score
Aruin)
OB. nat impact
O C. increase
D. decrease HELPPPP
Answer:
increase
Explanation:
Astronomers now think that there is a black hole with more than 4 million times the mass of our Sun at the center of our Galaxy? Roughly how large would the event horizon of such a supermassive black hole be? a. the size of our Moon b. about 4 light years across c. about 17 times the size of the Sun d. about the size of an atom (so much mass really compresses the event horizon) e. we can’t answer this question without knowing exactly what kind of stars were swallowed by the black hole
Given what we know about the astronomical units of space occupied by supermassive black holes, we can confirm that the event horizon in question is roughly 24million km across. Though no option given evaluates to this number, the closest is option c "about 17 times the size of the sun", which equates to the radius of the event horizon.
When comparing sizes, the universe can quickly make even the most massive object appear to be very small. The sun, which is large enough to make the earth look like a speck of dust in comparison, is roughly 700,000 km across. Though this is indeed a massive distance, it is only 1/35th the size of the event horizon in question.
The "Supermassive Black Hole" at the center of our galaxy is known as Saggitarius A. This black hole is said to be 4 million times the mass of our sun. Despite this, however, due to the highly compressed nature of black holes, it is only about 35 times larger than our sun. Option C comes close at 17 times larger but is only about half of what the event horizon for this black hole is.
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What is an electric circuit is and why/how an electric switch is able to stop and start
electric currents in an electric.
Answer:
A continuous and closed path of an electric current is called an electric circuit. An electric circuit consists of electric devices, a source of electricity and wires that are connected with the help of a switch.
Explanation:
All switches do the same thing: Connect wires to allow electric current to flow or disconnect wires to stop electric current from flowing. ... With the switch in the closed position, you've connected the wire (and completed the circuit), and current can flow.
You have to make it balanced.
2NCl3--- N2 + 3Cl2
hope it helps
+ 50 PLEASE HELP ME IM SO CONFUSED
Answer:
Place the nickel at 1" point on the ruler for each trial. Then, drop the quarter from 12" for each trial.
Here are the results-
Middle Trials (6")
T1: moved right about 0.5"
T2: moved left 1" and backwards 0.5" (-0.5")
T3: moved right 2" and backwards 0.5" (-0.5")
______________________________________
9" trials
T1: Right about 1"
T2: Right 0.5"
T3: around 0.8" foward
______________________________________
12" trials were all at 0" in change
______________________________________
The 12" trial requires more force for movement while the 9" trial gave the most positive changes forwards.
Explanation:
Information-
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What is the normal force of a 5 kg box on a horizontal table? Use gravity acceleration a = g = 10 m/s ^ 2
Answer:
normal force that 20 kg box exerts on 10 kg box. (a) The weight of the box depends on the value of g: FG = m2g = (20.0 kg)(9.80 m/s2) = 196 N.
katherine johnson’s skill in what field led to nasa’s first moon voyage?
what element has an atomic number of 99?
Answer:
Einsteinium has 99 atomic number
Answer:
Just a cheerful teen willing to help,
Just a cheerful teen willing to help,stay salty!
Explanation:
Explanation: Einsteinium (Es), synthetic chemical element of the actinoid series of the periodic table, atomic number 99. Not occurring in nature, einsteinium (as the isotope einsteinium-253) was first produced by intense neutron irradiation of uranium-238 during the detonation of nuclear weapons.
If acceleration of a body starting from the rest is 0.5m/s^2 how long will it take the body to travel 400m(if u are genius answer this)
Answer:
10s
Explanation:
Classic accelerated motion question. The formula giving us the distance traveled given intial speed and time taken is:
[tex]\Delta x = v_0\Delta t +\frac12 a (\Delta t)^2[/tex]
We know the acceleration, we know the initial speed (it was at rest, so it's zero), let's replace and solve:
[tex]400 = 0 \Delta t + \frac 12 (0.5) (\Delta t)^2 \rightarrow 100 = (\Delta t)^2\\\Delta t = 10s[/tex]
7. When the sky diver jumped from the plane, two pieces of paper with the same mass fell out of his pocket. The first piece of paper was folded in half once, and the second piece of paper was folded in half twice. Which piece of paper will reach the ground first? Give a reason for your answer.
The one folded twice because when it's more compressed its has more gravity. Subscribe to DreamfanBG for support.
what two factors determine how much kinetic energy an object has from its motion?
Answer: mass and speed.
Explanation: The two main factors that affect kinetic energy are mass and speed. Why? Because the motion of an object depends on how fast it's traveling.
How do i solve this?
Answer:
9 × [tex]10^{-3}[/tex]
suppose that a white dwarf is gaining mass through accretion in a binary system. what happens if the mass someday reaches the 1.4 solar mass limit?
Answer:
Hey there
When a white dwarf reaches 1.4 solar masses it implodes and becomes a neutron star. this mass limit is known as the "Chandrasekhar limit". It occurs when electron degeneracy pressure (the force that keeps the star from collapsing) is no longer strong enough to hold up aggainsed gravity.
3. Use the simulation to predict where you think the magnet’s magnetic field was
strongest. Explain your answer.
Magnetic field is stronger at the poles whereas weaker at the center.
The magnetic field on the bar magnet is strongest at the poles because the field lines are most concentrated at the poles while on the other hand, the magnetic field is weaker in the central part of magnet.
Magnetic field has equal amount of strength at both the poles so in my opinion as well as scientific point of view, magnet field is stronger at the poles and weaker at the center of magnet.
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If the mass of both objects are doubled while the
distance between them is halved, how is the
gravitational force of attraction between them
effected?
Answer:
The force becomes 16 times what it is now.
Explanation:
The formula for gravitational force is
F = G * m1 * m2 / r^2
When you do what you have described, you are setting a stage that not even the USS Enterprise (Star Trek) can get out of. The increase is huge.
If you double m1 and m2 and don't do anything to r, you've already increased the force by 4 times. (2m1 * 2m2 = 4 * m1 * m2)
But you are not finished. If you 1/2 the distance, you are again increasing the Force by 4 times. 1 / (2r) ^2 = 1/ 4* r^2
Because this is in the denominator, the 1/4 is going to flip to the numerator.
So the total increase is going to be 4 * (4 * m1 * m2) = 16 * m1 * m2.
Think about what that means. If you were out golfing, your drives would be roughly 1/16 times as far as they are now. Also you would be lugging around 16 times your weight around the golf course. My feeling is that you would never finish 5 holes at that rate.
a doctor observe areas of pink scaly skin on patient
Answer:
0-0 what is rhat supposed to mean. i dont think anyone can answer that lol
An aeroplane cruises at normal speed. Upon fl ying into turbulent (unstable) air, it suddenly drops downwards vertically. Passengers in the aeroplane who are not wearing seat belts will A hit the seats in front of them. B hit the ceiling of the aeroplane. C be pushed against the back of their seats. D be pushed down into their seats.
Answer:
Your answer would be D. be pushed down into their seats.
Explanation:
You can think of it this way:
If you're not wearing a seat belt on an airplane that drops suddenly, in this case, vertically, which often happens with turbulence- you're the one at rest. You'll stay at rest as the plane (literally) drops out from under you.
If you're strapped in, the seat belt serves as an outside force acting on you, taking you with the plane as it drops and saving you from hitting the ceiling.
Always remember Newton's first law of motion: A body at rest will remain at rest unless an outside force acts on it.
What is the chemical name of a greenhouse gas that contains carbon and oxygen?
Answer
: Carbon dioxide
Explanation:
the distance between the particles in steam is ______ the distance between the particles in liquid water,, a) greater than b) less than c) the same as
The distance between the particles in steam is greater than the distance between the particles in liquid water.
What is a steam?Steam is water in the gas phase.
The distance between the molecules of a steam (gaseous phase) are extremely large compared to liquid water (liquid phase).
Thus, the distance between the particles in steam is greater than the distance between the particles in liquid water.
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