9. An astronaut weighs 500 Newtons on Earth and 25
newtons on asteroid X. The acceleration due to
gravity on asteroid X is approximately
A) 1 m/s²
C) 0.2 m/s²
B) 2 m/s²
D) 0.5 m/s²

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Answer:

the advantage gained by the use of a mechanism in transmitting force specifically : the ratio of the force that performs the useful work of a machine to the force that is applied to the machine.

Explanation:

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.

Answer:

hey I am in class 6 why did you ask

Utilizing the momentum principle is a good strategy since there are no outside forces acting on  system, its total linear momentum is constant, and the total beginning and final momentum of the system are equal.

The amount that motion is referred to as momentum. Since an object possesses speed if it is moving and has mass, amount is measurable in this situation. An object doesn't have momentum if it isn't moving. Nevertheless, despite its significance in everyday life, many people remained unaware of it.

Momentum is a vectors quantity since it has both size and direction. Since inertia has a direction, it is used to forecast the direction and rate of motion of objects after a collision. Below is a one-dimensional description of the fundamental characteristics of momentum.

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Hi there!

Begin by converting 104.5 km/h to m/s.

\(\frac{104.5km}{hr} * \frac{hr}{3600 s}* \frac{1000m}{ km} = 29.028 m/s\)

Recall the definition of work:

\(\large\boxed{W = \Delta KE = Fdcos\theta}}\)

AND:

\(\large\boxed{W = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2}\)

The work done in this situation is due to the friction force:

\(F = \mu mg\\\\W = \mu mgd(cos180) \\W = -\mu mgd\)

Now, using the change in kinetic energy, we can solve:

\(-\mu mgd = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2\)

Cancel out the mass.

\(-\mu gd = \frac{1}{2}v_f^2 - \frac{1}{2}v_i^2\)

Rearrange for a working equation:

\(d = \frac{\frac{1}{2}v_f^2 - \frac{1}{2}v_i^2}{-\mu g}\)

Plug in the given values:

\(d = \frac{\frac{1}{2}(14.51)^2 - \frac{1}{2}(29.028)^2}{-(.120)(9.8)}\)

Solve:

\(d = \frac{\frac{1}{2}(14.51)^2 - \frac{1}{2}(29.028)^2}{-(.120)(9.8)} = \boxed{268.74 m}\)

The Acceleration of the system is 6.41 m/s².

Given,

α= 15°, m₁ = 7kg

β= 65°, m₂ = 11 kg

Let, a be the acceleration and T is the tensions at the end it's the cord.

Let, the mass m₂ be coming down along the inclined plane along the inclined surface towards downward m₂g sin β and the tension in the upward direction,

Resultant force, m₂a=m₂g sin β -T

11a=((11) ×g sin 65°) -T  ...(i)

Now, considering the motion of m₁ which moves downwards, the forces are m₁g sinα, and T both are acting downwards.

Resultant force m₁a = m₁g sin α+T

7a =7g sin 15°+T  ...(ii)

Solving both the equations by adding them,

18a=11gsin 65°+7g sin 15°-T+T

18a=11gsin 65°+7g sin 15°=115.45

a=115.45/18=6.41 m/s²

Hence, the Acceleration of the system is 6.41 m/s².

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Since Alejandro hopes to combine the findings from the collected studies and draw a general conclusion regarding the subject, he is using statistical tool of inference.

There are basically 2 types of statistical tools:

Descriptive tools are used to describe data. They include the use of tables, graphs, measures of dispersion, measures of central tendencies, etc.

Inferential tools are used to deduce conclusions from data. They include measures of significant differences, probability, correlation and regression, etc.

In this case, Alejandro would need to subject the data collected from the 35 studies to inferential statistical analysis tools in order to be able to make relevant conclusions.

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Answer:

263.15

. . . . . . . . . ..  ... . . . . . .. . . . . . . . ... .

Gravitational force is responsible for how magma flows and rocks stack up on top of one another.

Hence, it is the gravitational force that is responsible for how magma flows and rocks stack up on top of one another.

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The other string is approximately 439.857 Hz, or about 0.143 Hz lower in frequency than the first string.

The beat frequency is the difference between the frequencies of the two strings. We know that one string has a frequency of 440 Hz. Let's call the frequency of the other string "f".

We are told that the piano tuner hears one beat every 3.5 seconds. This means that the difference in frequency between the two strings is such that they complete one cycle of constructive and destructive interference every 3.5 seconds.

Therefore, we can use the following formula to find the frequency of the second string:

f = 1 / (2 x 3.5s)

f = 1 / 7s

f = 0.143 Hz

So the frequency of the second string is approximately 0.143 Hz.

To find how far off in frequency the second string is, we subtract its frequency from the frequency of the first string:

440 Hz - 0.143 Hz = 439.857 Hz

Therefore, the second string is approximately 439.857 Hz, or about 0.143 Hz lower in frequency than the first string.

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Answer:

the sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects. Often contrasted with life sciences. I don't know why but i like physics and all this stuff.

Explanation:

The diagram represents a chain reaction that is caused by nuclear fission

A chain reaction is simply a sequence of reactions in which a reactive product or a by-product causes additional reactions to take place.

Nuclear fission is a type of reaction in which the nucleus of an atom splits or divides into smaller nuclei.

From the diagram, it can seen that larger atoms where divided into smaller ones which resulted in additional reactions.

Hence, the reaction is a chain reaction cause by nuclear fission.

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Simplifying this equation:

\(KE = 0.5 * 0.015 kg * 608,400 m^2/s^2KE = 4,564.5 J\)

Therefore, the kinetic energy of the bullet as it leaves the barrel is 4,564.5 Joules.

The kinetic energy of the bullet can be found using the formula:

\(Kinetic Energy (KE) = 0.5 * mass * velocity^2\)
First, we need to convert the mass of the bullet from grams to kilograms. Since 1 kg = 1000 g, the mass of the bullet is 15.0 g / 1000 = 0.015 kg.

The velocity of the bullet is given as 780 m/s.

Now we can plug these values into the formula to find the kinetic energy:

\(KE = 0.5 * 0.015 kg * (780 m/s)^2\)

In summary, the kinetic energy of the bullet can be found using the formula KE = 0.5 * mass * velocity^2. By plugging in the values for mass (converted to kilograms) and velocity, we can calculate that the kinetic energy is 4,564.5 Joules.

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Therefore, the kinetic energy of the bullet as it leaves the barrel is 45.945 Joules.

The kinetic energy of an object can be calculated using the formula: KE = 1/2 mv^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.

In this problem, we are given the mass of the bullet, which is 15.0 g.

To find the kinetic energy of the bullet as it leaves the barrel, we need to calculate its velocity.

The problem states that the bullet is accelerated from rest to a speed of 780 m/s in a rifle barrel of length 72.0 cm.

Since we are only interested in the kinetic energy of the bullet as it leaves the barrel, we can ignore the length of the barrel and focus on the final velocity.

To find the final velocity, we can use the equation of motion: v^2 = u^2 + 2as, where v is the final velocity, u is the initial velocity (which is 0 m/s since the bullet starts from rest), a is the acceleration, and s is the distance traveled.

In this case, the bullet starts from rest, so the initial velocity is 0 m/s. The final velocity is given as 780 m/s, and the distance traveled is the length of the barrel, which is 72.0 cm or 0.72 m.

Using the equation of motion, we can rearrange it to solve for acceleration: a = (v^2 - u^2) / (2s). Plugging in the values, we get a = (780^2 - 0) / (2 * 0.72) = 338,750 m/s^2.

Now that we have the acceleration, we can calculate the kinetic energy of the bullet using the formula KE = 1/2 mv^2. Plugging in the values, we get KE = 1/2 * 0.015 kg * 780^2 m^2/s^2 = 45.945 J.

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Answer:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object

Answer:

It’s actually A) Inversely

Explanation:

Answer:

3.766 kg or 3.7 kg

Explanation:

F= M*A equation

The person who would have more kinetic energy between the man and the son, would be the man.

The man and the boy can have the same kinetic energy if the son was running faster than his father.

Since the man has a greater mass than his son and they are running at the same speed, the man will have more kinetic energy. This is because the kinetic energy is directly proportional to the mass when the velocity is constant.

For them to have the same kinetic, the son would have to run at a higher speed than the man, so that the product of 0.5 * mass * speed^2 is equal for both of them. In other words, the smaller mass of the son would need to be compensated for by a higher velocity (speed), resulting in equal kinetic energy.

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Answer:

On a distance time graph, the distance will always be the dependent variable on the y- axis. Time is the independent variable and will always be placed on the x-axis. The lines on the graphs can tell you many different things.

Explanation:

ANSWER:

the dependant variable is on the y axis and the independent variable is on the x axis.

The time taken for the rocket to apply the force is 25 seconds.

The time taken for the rocket to fire or apply the force to change the speed  of the probe is calculated as follows;

F = ma

where;

F = mv / t

where;

The time taken for the rocket to apply the force is calculated as;

t = mv / F

t = (722 x 1) / (29)

t = 24.9 s

t ≈ 25 seconds

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Answer:

what is magnetic domain

Answer:

La posición en la que se encuentra el móvil en el instante t = 30 s es 172 m.

Explanation:

El movimiento rectilíneo uniforme (MRU) es el movimiento que describe un cuerpo o partícula a través de una línea recta a velocidad constante.

La distancia recorrida,  x , por un móvil que tiene un MRU con un velocidad  v  durante el intervalo de tiempo  t  es:

x= x0 + v*t

donde x0 es la posición inicial.

En este caso:

Reemplazando:

x= 22 m + 5 m/s* 30 s

Resolviendo:

x= 22 m + 150 m

x= 172 m

La posición en la que se encuentra el móvil en el instante t = 30 s es 172 m.

Knowing the acceleration, distance and initial velocity of a body, its final velocity is 100 m/s.

The final velocity of a body with uniform acceleration can be calculated using the formula:
Vf² = Vi² + 2aΔx

Where Vf is the final velocity, Vi is the initial velocity, a is the acceleration, and Δx is the change in distance.

Plugging in the given values:
Vf² = (60m/s)² + 2(10m/s²)(320m)
Vf² = 3600m²/s² + 6400m²/s²
Vf² = 10000m²/s²
Vf = √(10000m²/s²)
Vf = 100m/s

Therefore, the final velocity of the body is 100m/s.

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The dog MUST be SEEN by a vet.

Not on the phone, not from your description. Not a web search, and not asking for advice online.

A qualified veterinarian has to have his hands on the animal, examine the dog, and make some suggestions. It might cost some money.

There's something missing here. A qualified real vet will never just say "I don't know, good bye!".

The turtle's position and direction appropriately after each instruction to ensure accurate drawing. You can also customize the colors, sizes, and shapes to enhance the visual appearance of the AND gate.

To draw an AND gate using turtle graphics, you can use the following set of instructions:

Set up the turtle:

a. Set the turtle's initial position.

b. Set the turtle's pen color and size.

Draw the first input line:

a. Move the turtle forward to the starting point of the line.

b. Draw a straight line segment to represent the first input.

Draw the second input line:

a. Move the turtle to the starting point of the second line.

b. Draw a straight line segment to represent the second input.

Draw the output line:

a. Move the turtle to the starting point of the output line.

b. Draw a straight line segment to represent the output.

Draw the logic gate shape:

a. Move the turtle to the starting point of the gate.

b. Draw a rectangle to represent the gate.

c. Add any necessary labels or symbols to indicate it as an AND gate.

Add connections between lines and gate:

a. Move the turtle to the intersection point of the first input line and the gate.

b. Draw a small line segment to connect the input line to the gate.

c. Repeat the above step for the second input line and the gate.

d. Draw a small line segment to connect the output line to the gate.

Repeat the above steps as necessary to draw multiple AND gates or any additional components.

Remember to adjust the turtle's position and direction appropriately after each instruction to ensure accurate drawing. You can also customize the colors, sizes, and shapes to enhance the visual appearance of the AND gate.

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Answer:

Gravity will cause a closed universe to collapse back on itself ending in the Big Crunch. scientific predictions about the future of the universe are based on the idea that the effect of gravity on matter determines the shape of the universe which then determines its future

Scientists know about the future of the universe and that stars will eventually burn out causing the universe to become cold and dark. Therefore, option C is correct.

All of the stars and galaxies will ultimately run out of energy as the universe expands, and the universe will cool down, resulting in the "Big Chill." It will take an indefinite amount of time for gravity to stop the universe's expansion if its density is equal to the critical density.

There won't be any other galaxies visible outside of our own. The universe will then actually become cold, dark, and empty once the stars have burned out.

Scientists know about the future of the universe and that stars will eventually burn out causing the universe to become cold and dark. Therefore, option C is correct.

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When the block and table are in an elevator moving upward at a constant speed, the magnitude of the normal force (Fn) is equal to the weight (mg) of the block.

This is because there is no net force acting in the vertical direction, so Fn balances out the weight of the block.

If the elevator is moving upward at an increasing speed, the magnitude of the normal force (Fn) will be greater than the weight (mg) of the block. The additional upward acceleration of the elevator requires an additional upward force to accelerate the block. The normal force must be greater than mg to provide this extra force and maintain equilibrium.

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The amount of work that must be done on the spring to stretch it to 20 cm is 1.6 J.

The amount of work done on the spring is calculated by applying the following formula as shown below.

W = ¹/₂kx²

where;

The amount of work that must be done on the spring to stretch it to 20 cm is calculated as follows;

W = ¹/₂ x ( 80 N/m ) x ( 0.2 m ) ²

W = 1.6 J

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The potter's tool used to create a piece of thrown pottery is the potter's wheel.

In pottery making, a variety of tools are used to shape and create pottery. One of the most important tools is the potter's wheel. The potter's wheel is a rotating platform that allows the potter to shape the clay into various forms. It consists of a circular disc that spins on a central axis. The potter places a lump of clay on the wheel and uses their hands to shape it as it spins.

The potter's wheel provides a stable and controlled surface for the potter to work on. It allows them to easily shape the clay and create symmetrical forms. By applying pressure and manipulating the clay with their hands, the potter can create bowls, vases, plates, and other pottery pieces.

Other tools used in pottery making include the potter's kiln, which is used to fire the pottery and harden it. The kiln reaches high temperatures, causing the clay to undergo chemical changes and become durable. Additionally, potters use various hand tools such as clay modeling tools, carving tools, and brushes to add details and texture to the pottery.

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