2. A person standing at
the edge of a seaside
cliff kicks a stone over
the edge with a speed of
18 m/s. The cliff is 52 m
above the water’s surface, as shown at right.
How long does it take
for the stone to fall to
the water? With what
speed does it strike the
water?

As per the given question, the swimmer will land 88.88m far downstream

Total distance covered = 1.8m/s

Length = 200m

The current of the river = 0.80 m/s

It is referred to downstream if a boar or swimmer moves in the same direction as the stream. When a boat's or a swimmer's speed is mentioned, it typically refers to the speed in still water.

Calculating the time taken to cross the river -

= Total length covered / total distance covered

= 200/ 1.8

= 111.1

Calculating the total drift of the swimmer -

= Total current of the river x time taken

= 0.80 x 111.1

= 88.88

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The sum of the external forces and torques acting on an object must be zero if the object is at rest.

We can infer from answer options that the body may have constant linear or constant rotational velocity, or both simultaneously, if the total of the external forces and total of the external torques acting on it are both zero.

If the thing has zero net force and zero net torque, the object is in equilibrium.

The total force acting on an object is summed up into a vector as the net force. When anything is in equilibrium, whether it's at rest or moving at a constant speed, there is no net force acting on it. Only a vector with zero components can have zero magnitude.

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Answer:

3

Explanation:

because the energy taken is divided by the velocity

The optical effect that is essential to the visual experience of motion pictures is known as Persistence of Vision.

Persistence of Vision (POV) is a phenomenon of the eye where an image or object is perceived by the brain for a short period of time after the image or object has been removed from the viewer's sight. The phenomenon occurs because of the retina's temporary retention of visual images even after they have been seen.

The Persistence of Vision enables the human eye to perceive the illusion of motion when viewing a series of still images in rapid succession. This effect is the foundation for the creation of motion pictures. In films, a sequence of still images is displayed in rapid succession (typically at a rate of 24 frames per second) that simulates motion to the human eye, tricking it into believing that the images are moving in a fluid and natural way.

POV is an essential aspect of the visual experience of motion pictures as it allows filmmakers to create an illusion of motion using a series of still images. The human eye is capable of retaining images for a short period of time after they have disappeared from the field of vision, which makes this effect possible.

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Answer:

Explanation:

That’s dangerous who would do that.

Me

Answer:

I feel like it is C

Explanation:

I think it is C because it involves plant, which is a form of life and it involves the amount of water being given to the plants.

Answer:

the answer is b.

plsss pa brainliest po ako

Answer:

a. Light bulb - electrical to light

b. Firework - chemical to light / thermal / sound

c. Flute - kinetic to sound

d. Leaf-  solar to chemical

Newton's third law of motion states that for every action, there is an equal and opposite reaction. The action-reaction pair is used to describe the interaction between two objects. Therefore, when a car is speeding up as it drives along a level road, an action-reaction pair occurs.

An action-reaction pair is a pair of forces that are equal in strength and opposite in direction. When an object exerts a force on another object, the second object exerts an equal and opposite force on the first object. The action-reaction pair when a car speeds up as it drives along a level road can be explained as follows: Action force: The car exerts a force on the road in the forward direction. This is the action force. Reaction force: The road exerts a force on the car in the backward direction. This is the reaction force.

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Answer:

v = 27.5 m/s

Explanation:

p = m × v

6,875 = 250 × v

250v = 6,875

v = 6,875/250

v = 27.5 m/s

To maintain twice the speed, the racing car would require four times the initial amount of friction between the tires and the track.

To maintain circular motion on a flat circular track, a racing car requires friction between the tires and the track. The amount of friction required depends on the speed of the car.

When the car's speed is doubled, the centripetal force required to keep the car moving in a circle also doubles. Since friction provides the centripetal force in this case, the amount of friction required for twice the speed is four times greater than the initial friction.

This can be understood by considering the centripetal force equation:

\(Fc = (m * v^2) / r\)

Where Fc is the centripetal force, m is the mass of the car, v is the velocity of the car, and r is the radius of the circular track.

When the speed is doubled (2v), the centripetal force becomes:

\(Fc' = (m * (2v)^2) / r = (4m * v^2) / r\)

Comparing the two centripetal force equations, we can see that Fc' is four times greater than Fc.

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The law of conservation of momentum allows to find the result for the movement of the system when the gun is fired is:

The conservation of momentum is one of the most important principles of physics, it establishes that in an isolating system the momentum is conserved.

Let's define the system to be formed by the gun and the bullet, this system is isolated, therefore the momentum is conserved, let's write the moment for two instants, see attached.  The mass of the gun is M and the mass of the bullet is m

Initial instant. Before the shot.

          p₀ = 0

Final moment. After the shot.

          \(p_f = (M-m) \ v_{gun} + m \ v_{bullet}\)  

The momentum is preserved.

           p₀ = \(p_f\)

          \(0 = (M-m) \ v_{gun} + m \ v_{bullet}\)  

        \(v_{gun} = - \frac{m}{M-m} \ v_{bullet}\)  

Consequently we can see that the gun goes back, its velocity is negative with respect to the bullets and the velocity of the gun is much lower than the velocity of the bullet, to increase this velocity we can:

In conclusion, using the law of conservation of momentum we can find the result for the movement of the system when the gun is fired is:

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Answer:

Your position would be -1

Explanation:

I think that's the answer you would need to collaborate more so i can give you a clear answer.

The spring constant of the spring is 8 N/m. Note that the negative sign simply indicates that the spring exerts a force in the opposite direction to the applied force.

Hooke's law states that the force applied to a spring is directly proportional to the displacement of the spring from its rest position. Mathematically, this can be written as:

F = -kx

where F is the applied force, x is the displacement of the spring from its rest position, and k is the spring constant.

In this problem, we are given that a force of 16 N is applied to a spring and it stretches by 2 m. Therefore, we can write:

F = 16 N

x = 2 m

Substituting these values in the equation for Hooke's law, we get:

16 N = -k (2 m)

Solving for k, we get:

k = -16 N / 2 m

k = -8 N/m

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Explanation:

POTENTIAL energy is due to a mass's height above the earth and is equal to   m * g * h      

  130 kg  * 9.81 m/s^2  * 1000 m = 1275300 J

Answer:  a moving car

flowing river

maybe the boulder on the hill if its moving

Explanation: poteoinal enrgry means something is moving sorry im not the bestat explaing things

Answer: Snowy and rainy

Explanation:

The effective access time for the system is 5.95 units of time.

Calculate the effective access time for the system with a given cache hit ratio, we can use the concept of the "average memory access time" (AMAT).

The AMAT takes into account the time required for both cache access and RAM access, weighted by their respective hit and miss probabilities.

Cache access time: 1 unit of time (since cache access is 100 times faster than RAM access)

RAM access time: 100 units of time

Cache hit ratio: 95% (or 0.95)

Calculate the effective access time (EAT), we can use the following formula:

EAT = (cache hit time) + (cache miss time * miss ratio)

Cache hit time = cache access time = 1 unit of time

Cache miss time = RAM access time = 100 units of time

Miss ratio = 1 - cache hit ratio = 1 - 0.95 = 0.05

Plugging in the values, we get:

EAT = (1 * 0.95) + (100 * 0.05) = 0.95 + 5 = 5.95 units of time

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The speed of the man and the chair after the book is thrown is 0.2 m/s.

The given parameters:

The total mass of the man and the book is calculated as follows;

m₂ = 70 kg + 9.2 kg

m₂ = 79.2 kg

The speed of the man and the chair after the book is thrown is determined by applying the principle of conservation of linear momentum;

\(m_1 u_1 = m_2u_2\\\\u_2 = \frac{m_1u_1}{m_2} \\\\u_2 = \frac{2.1 \times 7.2}{79.2} \\\\u_2 = 0.2 \ m/s\)

Thus, the speed of the man and the chair after the book is thrown is 0.2 m/s.

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Answer:

Let's briefly summarize the major features of resistors in series:

Series resistances add together to get the equivalent resistance (Equation 10.3. 2): RS=R1+R2+R3+... ...

The same current flows through each resistor in series.

Individual resistors in series do not get the total source voltage, but divide it.

The intensity of sunlight that reaches Jupiter is significantly less than that which reaches Earth.

The intensity of sunlight decreases as distance from the sun increases. Jupiter is located on average about 778 million kilometers (484 million miles) from the sun, which is about 5.2 times the distance between the sun and Earth. This means that the intensity of sunlight that reaches Jupiter is much lower than the 1400 W/m2 that reaches Earth's atmosphere. In fact, the intensity of sunlight that reaches Jupiter's atmosphere is only about 4% of that which reaches Earth. Therefore, the intensity of sunlight that reaches Jupiter is approximately 56 W/m2.

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Answer:

decigram milligram gram decagram kilogram

Answer:

organic material

Explanation:

Answer:

A

Explanation:

neutrons have neutral charge, while electrons are outside the nucleus with a negative charge

Answer:A

Explanation:took test

Ohm's law has three formulas, which are V = IR, I = V/R, and R = V/I.

Ohm's law describes the relationship between voltage, current, and resistance in an electrical circuit. The first formula, V = IR, states that the voltage across a resistor is directly proportional to the current flowing through it, with the constant of proportionality being the resistance of the resistor.

The second formula, I = V/R, expresses the current flowing through a resistor in terms of the voltage across it and the resistance of the resistor. Finally, the third formula, R = V/I, gives the resistance of a resistor in terms of the voltage across it and the current flowing through it. These formulas are commonly used in analyzing and designing electrical circuits.

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Answer:110N

Explanation:

ma=f in/ f out (formula)

Input: 20.0N

Ma:5.5

Output:?

^ given information

Plug the numbers into the equation ~
5.5= 20N/?
5.5x20=110N

If a certain lever has a mechanical advantage of 5.5, then the leaver would be able to lift a load of 110 Newtons  with an input force of 20.0 N

Mechanical advantage is defined as a measure of the ratio of output force to input force in a system, It is used to analyze the forces in simple machines like levers and pulleys.

Mechanical advantage = output force(load) /input force (effort)

As given in the problem a certain lever has a mechanical advantage of 5.5, then we have to find out how heavy of a load could the lever lift with an input force of 20.0 N,

Mechanical advantage = output force(load) /input force (effort)

5.5 = load / 20.0 Newtons

load = 5.5 × 20

       = 110 Newtons

Thus, the leaver would be able to lift a load of 110 Newtons  with an input force of 20.0 N

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If the 4.2 billion dollars were all in 1-dollar bills and laid out end-to-end, the trail would be approximately 404,994 miles long.

To calculate the length of the trail formed by 4.2 billion 1-dollar bills laid out end-to-end, we need to multiply the number of bills by the length of each bill. Given that a 1-dollar bill is 6.14 inches long, we can convert this to miles by following a step-by-step process.

First, we need to convert inches to feet by dividing the length of the bill by 12 (since there are 12 inches in a foot):

6.14 inches / 12 = 0.5117 feet.

Next, we need to convert feet to miles by dividing the length in feet by 5280 (since there are 5280 feet in a mile):

0.5117 feet / 5280 = 0.000097 miles.

Finally, we can determine the length of the trail by multiplying the length of one bill by the total number of bills:

0.000097 miles/bill * 4.2 billion bills = 404,994 miles.

Therefore, if the 4.2 billion dollars were all in 1-dollar bills and laid out end-to-end, the trail would be approximately 404,994 miles long.

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The reading of the given passage on astronomy gives;

Sentence (1) is the main idea or background statement with regards to astronomy, with regards to the sources of concepts being used in astronomy. It conveys the subject matter of passage.

Sentence (2) gives more light to the statement of sentence (1). It gives the supporting details of the concepts astronomers inherited from antiquity, by outlining them; (angles and angular measure system used locate stellar objects), while sentence (4) gives a little information with regards to the use of angular system.

Therefore;

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Answer:

This is valid information......

Answer:

???

Explanation:

thanks for the points?