Which planet has the most gravity?A. EarthB. NeptuneC. MarsD. Jupiter

In this scenario, the cat sliding down the rubber rod and falling into metal pail "a" caused the transfer of charge to pail "a". This transfer of charge caused pail "a" to become charged and the metal pails "b" and "c" that were in contact with it, were also charged by induction.

When the shelf broke, the metal pails fell separated to the non-conducting floor, resulting in the charge being separated and no longer being able to move from one metal pail to another.

After the cat ran away, the charged metal pails likely remained charged, as there was no conductor available for the charge to flow through and neutralize.

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Answer:

c

Explanation:

The mass of the boat is 160 .37 kg.

Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.

Calculation:-

Force = mass × acceleration

mass = force/acceleration

        = 85 / 0.530

       = 160 .37 kg

Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.

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Answer:

A dot B = C     is the vector equation for this expression

A · B = A B cos θ

3 * 4 cos θ = 1       the value 1 is their dot product

cos θ = 1 / 12 = .083       θ = 85.2 deg

Answer:

In fact, God already knows how your story will end. The thing is, it’s really his story and he created you to be a unique and significant part of it. That’s why you can have faith that he is working to take care of you and to give you a good future. God repeatedly says in Scripture that he will one day reward us for our faith.

Good luck

Explanation:

Answer:

  15√2 N

Explanation:

The acceleration is given by ...

  a = F/m = 5t/5 = t . . . . meters/second^2

The velocity is the integral of acceleration:

  v = ∫a·dt = (1/2)t^2

This will be 9 m/s when ...

  9 = (1/2)t^2

  t = √18 . . . . seconds

And the force at that time is ...

  F = 5(√18) = 15√2 . . . . newtons

The angular size of a distant galaxy cannot be determined by an observation that only uses spectroscopy.

Astronomical spectroscopy can be used to examine the different wavelengths of light or radiation coming from matter found in space. Astronomical spectra can be observed to determine the chemical composition of stars and galaxies. Continuous spectrum can be examined by a researcher to determine the temperature of the star.

The angular size or angular diameter of a distant galaxy can be measured by Fourier technique. It is a technique that is based on the interference of light. Spectroscopy uses the dispersion of light to calculate a quantity.

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Answer:

\(3.52\times 10^{25}\ \text{J}\)

Explanation:

G = Gravitational constant = \(6.674\times 10^{-11}\ \text{Nm}^2/\text{kg}^2\)

M = Mass of Sun = \(1.989\times 10^{30}\ \text{kg}\)

m = Mass of Earth = \(5.972\times 10^{24}\ \text{kg}\)

\(r_i\) = Initial radius of orbit = \(1.5\times 10^{11}\ \text{m}\)

\(r_f\) = Final radius of orbit = \(((1.5\times 10^{11})+2\times 10^3)\ \text{m}\)

Energy required is given by

\(E=\dfrac{1}{2}\Delta U\\\Rightarrow E=\dfrac{GMm}{2}(\dfrac{1}{r_i}-\dfrac{1}{r_f})\\\Rightarrow E=\dfrac{6.674\times 10^{-11}\times 1.989\times 10^{30}\times 5.972\times 10^{24}}{2}(\dfrac{1}{1.5\times 10^{11}}-\dfrac{1}{(1.5\times 10^{11})+2\times 10^3})\\\Rightarrow E=3.52\times 10^{25}\ \text{J}\)

The energy required would be \(3.52\times 10^{25}\ \text{J}\).

A frame of reference that is inertial is not the elevator.

The elevator must be accelerating.

What is Acceleration?

It is a vector quantity, which means that it has both magnitude and direction. Acceleration is defined as the change in velocity divided by the time it takes for that change to occur. Mathematically, acceleration can be expressed as:

a = (v_f - v_i) / t

where "a" is acceleration, "v_f" is the final velocity, "v_i" is the initial velocity, and "t" is the time taken for the change in velocity.

According to the problem statement, the tension in the string is measured to be 10% less than the force due to gravity on the load. This means that the net force on the load is not zero, and it is accelerating in the direction of the net force, which is downwards.

Since the load is stationary with respect to the observer inside the elevator, the elevator must also be accelerating downwards with an acceleration equal to that of the load. This implies that the elevator is not an inertial frame of reference, as an inertial frame of reference is a frame in which an object at rest remains at rest, or an object in motion moves with a constant velocity in a straight line, in the absence of any external forces.

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Answer:

clockwise and counter clockwise

it depends wich way you start paddling

Answer:

The common velocity v after collision is 2.8m/s²

Explanation:

look at the attachment above ☝️

Answer:

The one with the faster velocity is the one with a velocity of -10m/s

The time will be the same for both horizontal and vertical component. The initial speed is 10.7 m/s

Speed is a distance travel per time taken. It is a scalar quantity and it is measured in m/s

Given that a person standing at the edge of a seaside cliff kicks a rock horizontally of the cliff from a height of 52 m and it lands a distance of 35 m from the base of the cliff.

The rock will move vertically downward with initial velocity = 0. The time taken will be constant. That is, same horizontally.

Let us first calculate the time by using the formula

h = ut + 1/2gt²

Where

Substitute all the necessary parameters into the formula

52 = 0 + 1/2 × 9.8 × t²

52 = 4.9t²

t² = 52/4.9

t² = 10.6

t = √10.6

t = 3.26 s

The speed at which the rock was initially kicked can be found by

R = Ut

35 = U × 3.26

U = 35/3.26

U = 10.7 m/s

Therefore, rock was initially kicked at a speed of 10.7 m/s

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Answer:

The speed of a wave is equal to the wavelength divided by the period. The wavelength is the distance between two consecutive nodes, and the period is the time it takes for one complete cycle of the wave.

In this case, the wavelength is 6 m and the period is 0.2 s. Therefore, the speed of the wave is 30 m/s.

The answer is 30 m/s.

Explanation:

The bus's displacement from Houston to Texas with average velocity = -16.170 km/h

Evaluation :

average velocity = ( initial velocity -- final velocity )

                                    ( v-u )

displacement = \(\frac{v-u}{t}\)

displacement =  \(\frac{0 - 76 }{4.7}\)

                            = - 16.170 km/h

Average velocity is determined  as the change in position or displacement (∆x) divided by the time period  (∆t) in which the displacement results . The average velocity could be positive or negative based upon the sign of the displacement. The SI unit of average velocity is defined as  meters per second (m/s or ms-1).

The displacement is commonly the difference in the position of the two marks and is independent of the path covered  when traveling between the two of the  marks. The distance covered , however, is the total length of the path chosen  between the two marks. Displacement defined  as a vector quantity that mean  to "how far out of  the place an object is"; it's the object  overall changes  in  the position.

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To find the mass in kilograms, you need to know the object's weight in newtons and the acceleration due to gravity. The formula for finding mass is mass = weight / acceleration due to gravity. So if you have an object with a weight of 100 N and the acceleration due to gravity is 9.8 m/s^2, the mass would be 10.204 kg.

The mass of the block is 0.025 kg or 25 g, when the spring has k = 28 N/m, and compresses 0.11 m before bringing the block to rest.

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Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{275}{20} = \frac{55}{4} \\ \)

We have the final answer as

Hope this helps you

The constant acceleration of the train is 50/9 m/s².

The two balls will collide at a height of approximately 10.204 meters above the ground.

Using the kinematic equations of motion, we have:

distance = initial velocity * time + 1/2 * acceleration * time^2

For the first phase of acceleration, the initial velocity is zero, the time is 5 minutes = 300 seconds, and the distance traveled is unknown. So we have:

d1 = 0 + 1/2 * a * (300)^2

For the second phase of constant speed, the initial velocity is v, the time is 5 minutes = 300 seconds, and the distance traveled is also unknown. So we have:

d2 = v * 300

For the third phase of deceleration, the initial velocity is v, the time is also 5 minutes = 300 seconds, and the distance traveled is again unknown. So we have:

d3 = v * 300 + 1/2 * (-a) * (300)^2

The total distance traveled is the sum of these three distances:

distance = d1 + d2 + d3 = 1/2 * a * (300)^2 + v * 600 - 1/2 * a * (300)^2 = v * 600

Since the total distance traveled is given as 10 km = 10000 m, we have:

v * 600 = 10000

Solving for v, we get:

v = 10000/600 = 50/3 m/s

Now we can use the second equation above to find a:

d2 = v * 300 = (50/3) * 300 = 5000 m

Therefore, the constant acceleration of the train is:

a = 2 * (5000 - 1/2 * a * (300)^2) / (300)^2 = 50/9 m/s^2

The constant acceleration of the train is 50/9 m/s^2.

Problem 2: The height of the first ball dropped is given as 10m. Let's assume the height of the collision point is h meters above the ground.

Using the kinematic equation for free fall, we have:

h = 10 + 1/2 * g * t^2

where g is the acceleration due to gravity, which is approximately 9.81 m/s^2, and t is the time it takes for the second ball to reach the collision point after being thrown upwards.

The initial upward velocity of the second ball is 10 m/s, and we know that at the collision point, its velocity will be zero, since it will have reached its maximum height and will be momentarily at rest before falling back down.

Using the kinematic equation for motion with constant acceleration, we have:

0 = 10 + (-g) * t

Solving for t, we get:

t = 10/g = 10/9.81 seconds

Substituting this value of t into the first equation, we get:

h = 10 + 1/2 * 9.81 * (10/9.81)^2

Simplifying, we get:

h = 10.204 m

The two balls will collide at a height of approximately 10.204 meters above the ground.

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Answer:

1) Position time graph

2) Acceleration time graph

3) Velocity time graph

Answer:

s = 3.26 m

Explanation:

Given that,

Water leaves at a speed of 8 m/s

We need to find the maximum height that steelhead can jump. Let it can jump to a height of h.

At maximum height, final speed is equal to 0. We can use third equation of motion to find the maximum height.

\(v^2-u^2=2as\)

a = -g

\(-u^2=-2gs\\\\s=\dfrac{u^2}{2g}\\\\s=\dfrac{(8)^2}{2\times 9.8}\\\\=3.26\ m\)

Hence, the maximum height is 3.26 m.

The tension in the wire is caused by the elastic collision between the balls and the magnitude of this tension is determined as 18.81 N.

The speed of the balls after the collision is determined by applying the principle of conservation of linear momentum as shown below.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

9.2(0) + 2.8(3.5) = 9.2v₁ + 2.8(v₂)

9.8 = 9.2v₁ + 2.8v₂   -----(1)

u₁ + v₁ = u₂ + v₂

0 + v₁ = 3.5 + v₂

v₂ = v₁ - 3.5  ---(2)

Substitute (2) into (1)

9.8 = 9.2v₁ + 2.8(v₁ - 3.5)

9.8 = 9.2v₁ + 2.8v₁ - 9.8

19.6 = 12v₁

v₁ = 19.6/12

v₁ = 1.63 m/s

v = √T/μ

v² = T/μ

T = v²μ

where;

μ is mass per unit length of the wire = 9.2/1.3 = 7.08 kg/m

T = (1.63²) x 7.08

T = 18.81 N

Thus, the tension in the wire just after collision is 18.81 N.

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One natural source of radioactivity is radon gas, which is produced from the decay of uranium in rocks and soil.

It emits alpha particles, which are stopped by a sheet of paper but can be dangerous if inhaled. Radon is most common in areas with high concentrations of uranium and can accumulate in poorly ventilated buildings, particularly in basements. Long-term exposure to radon is a significant cause of lung cancer, particularly among smokers.

To protect themselves, people can test their homes for radon levels and install mitigation systems if necessary. However, radon is also used in some medical treatments and as a tracer in scientific research. Sources for this report include the United States Environmental Protection Agency, the World Health Organization, and the National Cancer Institute.

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Answer:

u=10m/s

a=-10m/s²

v=0m/s

s=v²-u²/2a

s=0-100/-10

s=-100/-10

s=10m

t=v-u/a

t=0-10/-10

t=-10/-10

t=1second

Answer/Explanation: When a metal loses electrons, and a nonmetal gains those electrons ions are formed.

Answer:

Any metal element can form a positive ion because they lose electrons to become stabilized.

Answer:  Energy can be transferred between objects or systems through various mechanisms such as conduction, convection, radiation, and mechanical work.

In conduction, heat energy is transferred between objects or systems that are in contact with each other through direct molecular collisions. For example, if you heat a metal rod at one end, the heat energy is transferred through the rod to the other end.

In convection, heat energy is transferred between objects or systems through the movement of fluids, such as air or water. For example, when you boil water on a stove, the heat is transferred from the stove to the water through conduction. As the water heats up, it rises to the top of the pot and cooler water flows in to take its place. This process of rising and falling creates a convection current that transfers the heat energy throughout the water.

In radiation, energy is transferred through electromagnetic waves, such as light or infrared radiation. For example, the heat energy from the sun is transferred to the Earth through radiation.

Mechanical work can also transfer energy between objects or systems. For example, when you lift an object off the ground, you are doing work against the force of gravity. The energy you use to do this work is transferred to the object in the form of potential energy.

An example of energy transfer is the use of solar panels to generate electricity. When sunlight hits the solar panels, the energy is transferred through radiation, which creates an electrical current that can be used to power appliances and devices. In this case, the energy is transferred from the sun to the solar panels to the electrical devices.

Explanation: would apreciate a thanks and a brainliest :D

Answer:

The quantity and quality of sleep both impact memory.

Explanation:

Answer:

If there are more molecules present, or there's a bigger surface area on which the reaction happens, there will be more successful collisions and the reaction will go faster. Also, if the temperature is higher, more molecules will have enough energy to react, and the reaction will be faster.