determine (a) how long it took king kong to fall straight down from the top of the empire state building (380 m tall), and (b) his speed just before landing.

Answer:

c...........................

Answer:

It's A

Explanation:

Because I know it is

The record in the last row should be 2LiCl + 3O2.

A chemical reaction equation has two parts;

The interaction between the atoms of the reactants lead to rearrangement hence products are formed.

For the reaction, the record in the last row should be 2LiCl + 3O2.

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Answer:

Golfer B hits his golf ball at a higher rate of speed and with more force. This means that golfer B's ball will travel for a longer period of time and a longer distance due to newtons first law, where it says an object in motion stays in motion, with the same speed and in the same direction.

Explanation:

The direction of the vector is approximately 330.06 degrees.

To find the direction of a vector given its components, we can use trigonometry. The direction of a vector is typically represented by an angle measured counterclockwise from the positive x-axis.

Let's denote the x-component as x = -309 m and the y-component as y = 187 m. To find the direction, we can calculate the tangent of the angle using the formula:

θ = arctan(y/x)

Substituting the given values, we have:

θ = arctan(187/-309)

Using a scientific calculator or trigonometric tables, we find that the arctan of this ratio is approximately -30.06 degrees.

Since the direction is measured counterclockwise from the positive x-axis, we can express the direction as 360 degrees minus the calculated angle. In this case, the direction is approximately 330.06 degrees.

Therefore, the direction of the vector is approximately 330.06 degrees.

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13.25 m/s = 47.88 km/h was roughly how fast the punt was moving at the time.

The rate at which distance and time change is what is meant by speed. It has the aspect of temporal and spatial distance. The combination of a fundamental units of distance and time is what is described as the System of units ( si of speed. As a result, the SI unit for speed is the meter per second.

In contrast to velocity, which describes the speed and direction of the an object's movement, speed is the rate of movement along a path. Instead, velocity is a vector while speed is a scalar quantity.

t = (2 * v0 * sin) g

where (9.81 m/s2) is the acceleration caused by gravity.

In order to find t, we must solve for it as follows: t = (2 * v0 * sin) / g 4.30 ≈ (2 * v0 * sin68) / 9.81 v0 = (4.30 * 9.81) / (3 ) * sin68)

0.194 = 13.25 m/s

We may multiply this by 3.6 to get the speed in km/h: 13.25 m/s * 3.6 ≈ 47.88 km/h

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The initial speed 13.25 m/s = 47.88 km/h was roughly how fast the punt was moving at the time.

Speed refers to the rate at which distance and time change. It has a temporal and spatial distance component. The System of units (s of speed) is the amalgamation of fundamental units of time and distance. Consequently, the meter per second is the SI unit for speed.

Speed is the rate of movement along a path, in contrast to velocity, which describes the speed and direction of an object's movement. Speed, on the other hand, is a scalar quantity while velocity is a vector.

                         t = (2 × v₀ × sin) g

where (9.81 m/s2) is the acceleration caused by gravity.

In order to find t, we must solve for it as follows:

t = (2 × v₀ × sin) / g 4.30 ≈ (2 × v₀ × sin 68) / 9.81 v₀

                           = (4.30 × 9.81) / (3 ) × sin 68)

                            0.194 = 13.25 m/s

We may multiply this by 3.6 to get the speed in km/h:

                           13.25 m/s × 3.6 ≈ 47.88 km/h

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Answer:

Ohms

Explanation:

Ω this is the symbol

Answer:

minimize some of the steel and the handrails would be a lot more safer for the children

Explanation:

I would like to minimize the heat transfer from the handrails because when it is decrease, the friction will increase.

Any or all of a number of events, referred to as processes, known as heat transfer, are capable of moving energy + entropy from one place to another. Typically, convection, nonlinear thermal, etc. conduction are used to describe specific methods. It involves the slow, energy- and entropy-transfer-involved process of conduction between adjacent molecules.

A hot fluid, such as air, must move during convective; this process is typically quite quick.

Radiation is indeed the term for the electromagnetic radiation that is used to describe how energy is transferred from its emission at a heated surface to its absorption on that other surface without a medium.

The reason behind minimizing the heat transfer from the handrails is because when the heat transfer is decreased, the friction in the rails will increase, and it will be easy to hold them for support.

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During sewer pipe installation using a laser, a laser beam is projected through the pipe until it hits a target beam(c).

The target beam acts as a reference point or marker that helps align the pipe correctly during installation. By hitting the target beam, the laser beam indicates the desired direction and position for the pipe, ensuring accurate installation.

The target beam is often placed at the other end of the pipe or at specific intervals along the pipe's path, allowing the construction crew to adjust the alignment and slope as necessary. This process helps ensure the proper installation of the sewer pipe, minimizing potential issues and ensuring efficient drainage.

So c is correct option.
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Answer:

changing the force to point right is the correct answer :)

The direction of the force acting on the field should be changed to point towards the right.

An electric field is referred to as the region where the influence of charge is felt. Thus, the force acts in the direction of the electric field when the field is uniform.

Having said that, it follows that the direction of the force acting on the field should be changed to point towards the right.

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The work done by the car is equal to the change in kinetic energy.

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Answer:A

Explanation:

Answer:

v₃ = 9.62[m/s]

Explanation:

To solve this type of problem we must use the principle of conservation of linear momentum, which tells us that the momentum is equal to the product of mass by velocity.

We must analyze the moment when the astronaut launches the toolkit, the before and after. In order to return to the ship, the astronaut must launch the toolkit in the opposite direction to the movement.

Let's take the leftward movement as negative, which is when the astronaut moves away from the ship, and rightward as positive, which is when he approaches the ship.

In this way, we can construct the following equation.

\(-(m_{1}+m_{2})*v_{1}=(m_{1}*v_{2})-(m_{2}*v_{3})\)

where:

m₁ = mass of the astronaut = 157 [kg]

m₂ = mass of the toolkit = 5 [kg]

v₁ = velocity combined of the astronaut and the toolkit before throwing the toolkit = 0.2 [m/s]

v₂ = velocity for returning back to the ship after throwing the toolkit [m/s]

v₃ = velocity at which the toolkit should be thrown [m/s]

Now replacing:

\(-(157+5)*0.2=(157*0.1)-(5*v_{3})\\(5*v_{3})= 15.7+32.4\\v_{3}=9.62[m/s]\)

The velocity with which the astronaut must throw the tool kit is 9.62 m/s.

The given parameters:

Apply the principle of conservation of linear momentum to determine the velocity of the tool kit;

\(m_1 u_1 + m_2u_2 = v(m_1 + m_2)\\\\-0.1(157) \ + 5u_2 = 0.2(157 + 5) \\\\-15.7 + 5u_2 = 32.4\\\\5u_2 = 32.4 + 15.7\\\\5u_2 = 48.1\\\\u_2 = \frac{48.1}{5} \\\\u_2 = 9.62 \ m/s\)

Thus, the velocity with which the astronaut must throw the tool kit is 9.62 m/s.

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Answer:

All of the above is the correct answer!!!

Explanation:

mark me brainliest

The pressure from each foot of the elephant is 98,100 Pa (Pascals). In order to calculate the pressure from each foot of the elephant, we can use the formula:
Pressure = Force / Area

So, we have formula:
Pressure = Force / Area
First, let's determine the force exerted by the elephant. Force is the product of mass and acceleration due to gravity (F = m * g). Given the elephant's mass of 3200 kg, and considering the acceleration due to gravity is approximately 9.81 m/s², we can calculate the force:
Force = 3200 kg * 9.81 m/s² = 31,392 N
Now, we know that each foot covers an area of 0.08 m². To find the pressure exerted by each foot, we'll divide the total force by the number of feet (4) and then divide by the area each foot covers:
Force per foot = Total force / Number of feet = 31,392 N / 4 = 7,848 N
Pressure = Force per foot / Area = 7,848 N / 0.08 m² = 98,100 Pa
So, the pressure from each foot of the elephant is 98,100 Pa (Pascals).

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a) The image distance is -31.18 cm (real and inverted).

b) The magnification is -1.28.

c) Sherlock Holmes observes a real and inverted image that is smaller in size.

a) To find the image distance, we can use the lens equation:

  1/f = 1/di + 1/do

  where f is the focal length, di is the image distance, and do is the object distance. Given that the focal length (f) is 24.5 cm and the object distance (do) is 10.5 cm, we can substitute these values into the equation:

  1/24.5 = 1/di + 1/10.5

  Solving for di, we find:

  di ≈ -31.18 cm

  The negative sign indicates that the image is formed on the opposite side of the lens, which corresponds to a real image.

b) The magnification (M) is given by the ratio of the image distance to the object distance:

  M = di/do

  Substituting the values, we have:

  M ≈ -31.18 cm / 10.5 cm ≈ -1.28

  The negative magnification indicates that the image is inverted.

c) Based on the negative magnification and the fact that the image is formed on the opposite side of the lens (real image), we can conclude that Sherlock Holmes observes a real and inverted image. Since the magnification is greater than 1, the image is smaller in size compared to the object.

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The area of the shaded region is 4621.5 cm2 - 1083.8 cm2 = 3537.7 cm.

Area is the space or size of a two-dimensional surface or shape. It is a measure of the size of a surface and is typically expressed in square units, such as square feet or square meters. Area is usually calculated by multiplying the length of a shape by its width. For example, the area of a rectangle with a length of 4 feet and a width of 3 feet is 12 square feet. Area can also be calculated for shapes with curved sides such as circles, triangles, and other polygons.

The shaded region is the area between the two circles. To calculate the area of the shaded region, we need to subtract the area of the inner circle from the area of the outer circle.

The area of the outer circle can be calculated using the formula A = πr2, where r is the radius of the circle. Since the two circles have the same center, the radius of the outer circle is twice the radius of the inner circle.

Therefore, the radius of the outer circle is 2 × (117.436/2π) = 38.212 cm.

The area of the outer circle is A = π × 38.212^2 = 4621.5 cm2.

The area of the inner circle can be calculated using the same formula: A = πr2. The radius of the inner circle is (117.436/2π) = 18.606 cm.

The area of the inner circle is A = π × 18.606^2 = 1083.8 cm2.

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Naw ur pretty accurate, heck collage is the only football worth watching most the time. Hook'um horns!

Answer:

The net force is 100 N to the right.

Explanation:

To solve this problem, we simply add together the forces.  Since we know that there is a greater force to the right, we will designate this as the positive direction and the left as the negative direction.

To find the net force, let's add together the two forces we are given using our new positive/negative designations:

+150 N right - 50 N left

Now, we just perform simple subtraction to get:

100 N right

Therefore, the answer is that the net force is 100 N to the right.

Hope this helps!

Answer:

mass is measured in kilograms and weight is measured in newtons

Explanation:

Answer:

Havent seen this one before but the explanation should help you out :)

Explanation:

There are only three atomic bonds.

Ionic bonding.

Covalent bonding.

Metallic bonding.

The resultant force due to the cumulative forces acting on the body is 6i+6j N.

Force is a vector quantity and the direction in which they act affects the total magnitude of force. A vector quantity has both magnitude and direction.

And to add a vector one needs to take account of the direction as well.

The force acting on the body can be written as follow:

1. 10N along x-axis ---- 10i

2. 6N along y-axis ---- 6j

3. 4N along negative x-axis ----- -4i

The resultant force is the sum of the above vector:

10i +6j + (-4i) = 6i+6j N

The magnitude of the total force is

\(\sqrt{6^2+6^2}\\ =\sqrt{36+36}\\ =\sqrt{72}=6\sqrt{2} N\)

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The complete question is:

Find the resultant of the following forces

(i) 10 N along the x-axis

(ii) 6 N along the y-axis

(iii) 4 N along the negative x-axis

Answer:

C is correct

Explanation:

The statement that best describes how the phase of the Moon changes from a full moon to a new moon is as follows:

Thus, the correct option for this question is C.

The different phases of the moon may significantly include the new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter, and waning crescent. This cycle of phase change of the moon repeats once a month.

The Earth completes its one rotation around the sun in 365.25 days. While the moon completes its one rotation around the Earth in 29.5 days.  The rotation of the moon around the earth leads to phase change of it. This is because when the moon rotates around the sun, it directly or indirectly causes its exposure to the sun where its phase changes.

In the diagram above, when there is a full moon, the earth is present between the sun and the moon. But when a new moon arises, the moon is present between the earth and the sun.

Therefore, the correct option for this question is C.

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Answer:

B

Explanation:

The Sun's increased luminosity will heat the Earth's surface so much that the water oceans and atmosphere will evaporate away. Massive main sequence stars will expand much further to become supergiants.

HOPE I HELPED.

maybe i can get brainlist if did.:)

Answer:

Since the baseball is dropped from rest (i.e., initial velocity of 0 m/s), we can use the kinematic equation that describes the relationship between distance, acceleration due to gravity, time, and final velocity:

distance = (1/2) * acceleration * time^2 + initial_velocity * time

Since the baseball starts from rest, the initial velocity is 0. We know the height of the building is 85 m, the acceleration due to gravity is 9.81 m/s^2, and we want to find the final velocity just before it hits the ground. We can use the kinematic equation to solve for time and then use time to find the final velocity:

distance = (1/2) * acceleration * time^2

85 = (1/2) * 9.81 * time^2

time^2 = 17.328

time = 4.166 s

Now we can use the kinematic equation to find the final velocity:

final_velocity = acceleration * time

final_velocity = 9.81 * 4.166

final_velocity = 40.9 m/s

Therefore, ignoring air resistance, the baseball will hit the ground with a velocity of approximately 40.9 m/s.

Answer:

Decreases

Explanation:

The friction is acting against the movement of the object, causing the object to slow down.

Answer:

The height reached is 20m, The time taken to reach 20m is 2 seconds

Explanation:

Observing the equations of motion we can see that the following equation will be most helpful for this question.

\(v^{2} = u^{2} + 2as\)

We are given initial velocity, u

We know that the stone will stop at its maximum height, so final velocity, v

Acceleration, a

And we are looking for the displacement (height reached), s

Substitute the values we are given into the equation

\(0^{2} = 20^{2} + 2(10)s\)

Rearrange for s

\(0^{2} -20^{2} =20s\)

\(-400=20s\)

\(\frac{-400}{20} =s\)

s = -20 (The negative is just showing direction, it can be ignored for now)

The height reached is 20m

Use a different equation to find the time taken

\(s = vt - \frac{1}{2} at^{2}\)

Substitute in the values we have

\(-20=(0)t - \frac{1}{2} (10)t^{2}\)

Rearrange for t

\(-20 =0 -5 t^{2}\)

\(\frac{-20}{-5} =t^{2}\)

\(4 = t^{2}\)

t = 2s

The time taken to reach 20m is 2 seconds

Answer:

45 m

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 0.5 kg

Initial height (h₁) = 30 m

Initial potential energy (PE₁) = 20 J

Final potential energy (PE₂) = 30 J

Final height (h₂) =?

From:

PE = mgh

PE / h = mg = constant

Thus,

PE₁ / h₁ = PE₂ / h₂

With the above formula, we can obtain the final height of the bird as follow:

Initial height (h₁) = 30 m

Initial potential energy (PE₁) = 20 J

Final potential energy (PE₂) = 30 J

Final height (h₂) =?

PE₁ / h₁ = PE₂ / h₂

20 / 30 = 30 / h₂

Cross multiply

20 × h₂ = 30 × 30

20 × h₂ = 900

Divide both side by 20

h₂ = 900 / 20

h₂ = 45 m

Therefore, the final height of the bird is 45 m.

Answer:

   Gravitational potential energy.

   Chemical energy.

   Nuclear energy.

   Elastic potential energy

   Electrical potential energy

    Hope this helps :)