In this image from the Rube Goldberg model, the marble has traveled down the ramp and hits the rubber ball. The kinetic energy of the marble causes the rubber ball
to compress and then expand. The kinetic energy of the marble is converted to what type of energy in the rubber ball?

O Thermal energy
O Gravitational potential energy
O Chanical energy
O Elastic potential energy

Answer:

look for the "W" in the North. Remember that, the "W" may be on its side or inverted to form an "M." If you can recognize the Big Dipper (Ursa Major), the two stars at the edge of the Dipper point toward the North Star (Polaris)

Explanation:

Acceleration is the rate of change of velocity, so if velocity is linear, the acceleration is the slope of its graph.

Here, the line passes through the points (0, 1) and (0.5, 3), so its slope is

(3 m/s - 1 m/s) / (0.5 s - 0 s) = (2 m/s) / (0.5 s) = 4 m/s²

Answer:

yes

Explanation:

The hypothesis is scientific because there is no solid evidence to draw out the theory. Therefore the idea of other intelligence on other planets is scientific until found unworthy or scientifically proven wrong enough. Hope this helps a little:)

A. The average speed you can use to pull the safe is 1.02 m/s

B. The time needed to pull the safe up is 17.65 s

First, we shall obtain the force. This is shown below:

F = mg

F = 60 × 9.8

F = 588 N

Finally, we shall obtain the average speed. Details below:

Power = force × average speed

600 = 588 × average speed

Divide both sides by 588

Average speed = 600 / 588

Average speed = 1.02 m/s

The time needed to pull the safe up can be obtained as follow:

Time = Total distance / average speed

Time = 18 / 1.02

Time = 17.65 s

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Complete question:

You know you can provide 600 W

of power to move large objects. You need to move a 60-kg

safe up to a storage loft, 18 m

above the floor.

Part A

With what average speed can you pull the safe straight up?

Part B

What is the time needed to pull the safe up?

The closest distance and angle to this question are 1540.35 kilometers and 38.4 ° S. (depending on how you rounded).

There is a common misconception that distance & displacement are simply two different terms for the same thing. But separation separates the concepts of distance and displacement. The total distance covered by an object is always larger than the movement between those two sites, even if it changes direction throughout the course of its voyage.

The smallest (straight line) length between a body's starting position and its final location—represented by an arrow pointing from starting spot to final position—is referred to as a brain's displacement when it moves through one position to another.

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First, we will write the formula we will be using: the Ideal gas law

Now, let's see what is given to us

Volume: 28 Cubic Inches

Pressure: 35 PSI

New Volume: 5 cubic inches

New Pressure?

No change in temperature

Since we know that only the volume is changing, we can simplify the ideal gas law into Boyle's law

So now, we can subsititute in the values we got.

(28)(35) = 5(P2)

P2 = 196 PSI

Answer:

To solve this problem, you'll need to break the initial velocity of the seed into its horizontal and vertical components, then use the equations of motion to find the time of flight and horizontal distance.

The initial velocity (v) of the seed is 2.65 m/s. The angle it's launched at (θ) is 30.0 degrees below the horizontal. The height (h) it's launched from is 0.460 m.

First, calculate the horizontal (v_x) and vertical (v_y) components of the velocity. Because the seed is launched downward, the vertical component will be negative:

v_x = v * cos(θ) = 2.65 m/s * cos(30.0) = 2.29 m/s

v_y = v * sin(θ) = -2.65 m/s * sin(30.0) = -1.325 m/s

Next, use the equation of motion to find the time it takes for the seed to hit the ground:

h = v_y * t + 0.5 * g * t^2

Where g is the acceleration due to gravity, which is approximately 9.8 m/s². Solving the equation for t gives:

t = (-v_y - sqrt((v_y)^2 - 4 * 0.5 * g * (-h))) / (2 * 0.5 * g)

Plugging in the values:

t = (1.325 + sqrt((-1.325)^2 - 4 * 0.5 * 9.8 * (-0.460))) / (2 * 0.5 * 9.8)

t = 0.182 seconds

Finally, use the horizontal velocity and time of flight to find the horizontal distance the seed covers:

x = v_x * t = 2.29 m/s * 0.182 s = 0.417 m

So, the seed lands after approximately 0.182 seconds and travels approximately 0.417 meters horizontally.

Answer: The answer is 50 lb! :)

The maximum output force of the bike wheel is 50lb

In order to calculate the maximum output force of the bike wheel, we will use the formula:

\(\frac{R}{r} =\frac{F}{f}\)

R and r are the radii on the axle and wheel respectively

F and f are the respective force applied

Given the following parameters

R = 2 feet

r = 0.5 ft

F = 200

Substitute the given parameters into the formula to have:

\(\frac{2}{0.5} =\frac{200}{f}\\2f = 200 * 0.5\\2f = 100\\f = 50lb\)

Hence the maximum output force of the bike wheel is 50lb

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Answer:

Velocity become 5 m/s south,

I didnt get from second line.....

Answer:

1

Explanation:

Answer:

Explanation:

We can use the inverse-square law of universal gravitation to determine the weight of the missile at an altitude of 6.4 x 10^6 m. The law states that the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Let M be the mass of the Earth and m be the mass of the missile. At the Earth's surface, the weight of the missile is:

F1 = mg

where g is the acceleration due to gravity on the Earth's surface, which we assume to be 9.81 m/s^2.

At an altitude of 6.4 x 10^6 m, the distance between the center of the Earth and the missile is:

r = R + h

where R is the radius of the Earth (6.4 x 10^6 m) and h is the altitude of the missile (6.4 x 10^6 m).

The weight of the missile at this altitude can be calculated using the inverse-square law of universal gravitation:

F2 = G * M * m / r^2

where G is the gravitational constant (6.6743 x 10^-11 N * m^2 / kg^2).

Substituting the given values, we get:

F2 = (6.6743 x 10^-11 N * m^2 / kg^2) * (5.97 x 10^24 kg) * (400 N) / (6.4 x 10^6 m + 6.4 x 10^6 m)^2

F2 = 39.61 N

Therefore, the weight of the missile at an altitude of 6.4 x 10^6 m is approximately 39.61 N.

The maximum angle at which an object will not slip on an incline can be calculated using the coefficient of friction (μ).

When an object is on an inclined plane, there are two main forces acting on it: the gravitational force pulling it downward (mg) and the normal force (N) exerted by the inclined plane perpendicular to its surface. Additionally, there is a frictional force (F) acting parallel to the surface of the incline.

To prevent slipping, the frictional force must be equal to or greater than the force component pulling the object down the incline. This force component is given by the equation F = mg sin(θ), where θ is the angle of inclination.

The maximum frictional force that can be exerted between two surfaces is given by the equation F = μN, where μ is the coefficient of friction.

For an object not to slip, the maximum frictional force (F) must be equal to or greater than the force component pulling the object down the incline (mg sin(θ)). Therefore, we have:

F ≥ mg sin(θ)

Substituting F = μN, we get:

μN ≥ mg sin(θ)

Since N = mg cos(θ) (the normal force is equal to the component of the gravitational force perpendicular to the incline):

μmg cos(θ) ≥ mg sin(θ)

μ cos(θ) ≥ sin(θ)

Now, divide both sides of the equation by cos(θ):

μ ≥ tan(θ)

Taking the inverse tangent (arctan) of both sides, we get:

θ ≤ arctan(μ)

Therefore, the maximum angle at which an object will not slip on an incline is given by θ = arctan(μ).

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The statement that is NOT true is "the spaces between the particles increased.

option D.

If we consider the solids and liquids, when the temperature increases the molecules gain energy and start moving in all directions. This expands the substance and the volume of the substance increases.

Similar, when the ball is heated, the volume of the ball increases due to thermal expansion.

As the temperature increases, the average kinetic energy of the particles within the ball also increases, causing them to move faster.

However, the spaces between the particles do not necessarily increase. In fact, the expansion of the ball occurs due to the particles themselves moving farther apart, but the intermolecular spacing within the ball remains relatively constant.

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Freezing keeps food safe by slowing the movement of molecules, causing microbes to enter a dormant stage. Freezing preserves food for extended periods because it prevents the growth of microorganisms that cause both food spoilage and foodborne illness.

What is freezing food?

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The position of point C from point A  is determined as 96.4 m east.

The distance travelled by cyclist from point B to point C is calculated by applying the following kinematic equation as shown below;

d = vt

where;

Substitute the given parameters and solve for the distance travelled by the cyclist from point B to point C.

d = 18 m/s  x  2.8 s

d = 50.4 m

The position of point C is calculated by adding the distance travelled by the cyclist from point B to point C;

position of point C = 50.4 m + 46 m = 96.4 m

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The buoyant force can be determined by subtracting the apparent weight of the object in water from its weight in air. In this case, the buoyant force would be 7N - 4N = 3N.

Based on the information provided, since the buoyant force (3N) is less than the weight of the object (7N), the object will not float.

Floating occurs when the buoyant force is greater than or equal to the weight of the object.

In this scenario, the object will experience a net downward force, indicating that it will sink rather than float in water.

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The impact will last for 3.3 milliseconds, the average force applied to the nail will be [m (v² - u²)]/2s, and the average force applied to the nail will be 883.2 N, respectively.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Force is defined as the product of mass and acceleration. Its unit is Newton.

Given data;

Average force,F = ?

Mass,m = 0.46 kg

Acceleration,a

Final velocity,v = 0 m/sec

Initial velocity,u = 6.5 m/sec

The duration of the impact, assuming the acceleration is constant is found with the help of Newton's third equation of motion as;

v²=u²+2as

0  = (6.5)² + 2 ×a × 1.1 × 10⁻²

- 42.25 = 2 × a × 1.1 × 10⁻²

a = - 1920 m/s²

a = (v-u)/t

-1920 = (0-6.5)/t

t = 3 × 10⁻³ sec

t = 3.3 milli second

From Newton's third equation of motion;

v² = u² +2as

a = (v² - u² ) /2s

The average force exerted on the nail, in terms of the mass, initial velocity, and distance traveled is;

F = ma

F = [m (v² - u² )] /2s

The average force, in newtons, exerted on the nail is;

F = [m (v² - u² )] /2s

F= ma

Substitute the given value;

F = 0.469 × 1920

F = 883.2 N

Hence the duration of the impact, the average force exerted on the nail and the average force, in newtons, exerted on the nail will be 3.3 milliseconds, F = [m (v² - u² )] /2s and 883.2 N respectively.

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Answer:

maybe line toward the finish

Explanation:that question is confusing

Velocity is the pace at which your displacement is shifting; it describes how quickly and in which direction you are travelling. And acceleration, which is measured in meters per second, is the rate at which your velocity is changing (or meters per second squared).

Net force and mass are the two primary factors that impact how quickly an item accelerates. For instance, mass has an inverse relationship with acceleration while net force has a direct relationship.

The acceleration is also influenced by other elements like friction, air or fluid resistance, and pressure.

According to the second law, the mass of the item and the net force acting on it both impact how quickly an object accelerates.

Therefore, an object's acceleration is directly proportional to the net force applied on it and inversely proportional to its mass.

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The true statement, given the data from the question is: Both blocks will float equally over water.

To know which statement is true, we shall obtain the density of each blocks. Details below

For block A:

Density = mass / volume

Density of block A = 10 / 25

Density of block A = 0.4 g/mL

For block B:

Density = mass / volume

Density of block B = 20 / 50

Density of block B = 0.4 g/mL

From the above calculation, we can see that the two blocks have the same density.

Thus, we can conclude that the true statement is both blocks will float equally over water.

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Answer:

compressions; rarefactions

Explanation:

Answer:

m=1800kg

1800000g×10N/kg

18000000N force is required to life the car

ANSWER

EXPLANATION

We want to find the linear speed of the bicycle in feet per second.

First, we have to find the circumference of the bicycle wheel (in feet).

The circumference of a circle is:

First, convert the diameter to feet:

Hence, the circumference of the wheel is:

This implies that each revolution is an equivalent linear distance of 6.28 ft i.e 6.28 feet per revolution.

To find the linear speed, we have to find the product of the circumference and the

rotational speed. That is:

That is its linear speed.

The correct answers are: 1) a. The collision is not elastic, and this can be determined without knowing the masses of the boxes. 2) b. M = 4m



1) In an elastic collision, both momentum and kinetic energy are conserved. In this case, we can see that the initial kinetic energy of the system is (1/2)mv₀² (since the box with mass M is initially at rest). After the collision, the kinetic energy of the system is (1/2)m(v₀/2)² + (1/2)M(v₀/2)². Comparing the two, we can see that the initial kinetic energy is greater than the final kinetic energy. Therefore, the collision is not elastic, and we don't need to know the masses of the boxes to determine this. The correct answer is a).

2) To find the relationship between the masses, we only need to consider momentum conservation. Initially, the total momentum is mv₀ (since the box with mass M is at rest). After the collision, the total momentum is m(v₀/2) - M(v₀/2) (since one box moves to the left and the other to the right). Setting the initial momentum equal to the final momentum:

mv₀ = m(v₀/2) - M(v₀/2)

Divide both sides by v₀/2 to isolate the masses:

2m = m - M

Now, solve for M:

M = m - 2m
M = -m

However, the masses should be positive, so we must consider the magnitudes of the velocities:

2m = m + M
M = 4m

So, the mass of the larger box M is four times the mass of the smaller box m. The correct answer is b).

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Part a:

\(Q_{1}\) = 56

\(Q_{2}\) = 60

\(Q_{3}\) = 63

     The quartiles are found by finding the medium of the data, and then the mediums of the two different data sets on either side of the medium. The \(Q_{2}\) is the overall medium, \(Q_{1}\) is the medium of the first half, and \(Q_{3}\) is the medium of the second half.

-> How is the medium found? When finding the medium we put the values in order least to greatest and pick the middle value.

[] See attached

Part b:

The range is 7.

The interquartile range is the range of numbers between \(Q_{1}\) and \(Q_{3}\). In other words, it is 50% of the data, directly in the middle.

This becomes 63 - 56 = 7

Part c:

79 is an outlier.

It is an outlier because it is 1.5 above or below (in this case, above) the interquartile range.

-> 63 + (7 + \(\frac{7}{2}\)) ≤ 79

-> 63 + 10.5 ≤ 79

-> 73.5 ≤ 79

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

At the greatest point of the pendulum's swing (the top of the arc), the kinetic energy is at its least since the velocity is momentarily zero.

Mechanical energy is the product of potential and kinetic energy. The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant.

There are two types of mechanical energy – motion (kinetic energy) and stored (potential energy)

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Answer:

Intterferance

Explanation:

I took the test

Answer:

Ohm's LawPower Revisited

An electron traveling through the wires and loads of the external circuit encounters resistance. Resistance is the hindrance to the flow of charge. For an electron, the journey from terminal to terminal is not a direct route. Rather, it is a zigzag path that results from countless collisions with fixed atoms within the conducting material. The electrons encounter resistance - a hindrance to their movement. While the electric potential difference established between the two terminals encourages the movement of charge, it is resistance that discourages it. The rate at which charge flows from terminal to terminal is the result of the combined effect of these two quantities.

Variables Affecting Electrical Resistance

The flow of charge through wires is often compared to the flow of water through pipes. The resistance to the flow of charge in an electric circuit is analogous to the frictional effects between water and the pipe surfaces as well as the resistance offered by obstacles that are present in its path. It is this resistance that hinders the water flow and reduces both its flow rate and its drift speed. Like the resistance to water flow, the total amount of resistance to charge flow within a wire of an electric circuit is affected by some clearly identifiable variables.

First, the total length of the wires will affect the amount of resistance. The longer the wire, the more resistance that there will be. There is a direct relationship between the amount of resistance encountered by charge and the length of wire it must traverse. After all, if resistance occurs as the result of collisions between charge carriers and the atoms of the wire, then there is likely to be more collisions in a longer wire. More collisions mean more resistance.

Second, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area. Water will flow through a wider pipe at a higher rate than it will flow through a narrow pipe. This can be attributed to the lower amount of resistance that is present in the wider pipe. In the same manner, the wider the wire, the less resistance that there will be to the flow of electric charge. When all other variables are the same, charge will flow at higher rates through wider wires with greater cross-sectional areas than through thinner wires.

A third variable that is known to affect the resistance to charge flow is the material that a wire is made of. Not all materials are created equal in terms of their conductive ability. Some materials are better conductors than others and offer less resistance to the flow of charge. Silver is one of the best conductors but is never used in wires of household circuits due to its cost. Copper and aluminum are among the least expensive materials with suitable conducting ability to permit their use in wires of household circuits. The conducting ability of a material is often indicated by its resistivity. The resistivity of a material is dependent upon the material's electronic structure and its temperature. For most (but not all) materials, resistivity increases with increasing temperature. The table below lists resistivity values for various materials at temperatures of 20 degrees Celsius.

Answer:

~4%

Explanation:

% = |(7.6 - 7.9)|/7.9

= 0.3/7.9 ≈ 0.04 = 4%