how long does it take rick to cover the distance d ? express the time taken by rick in terms of vr , vw , and d g

The correct option about irregular galaxies is that they have ongoing star formation.  Irregular galaxies typically lack well-defined structures, such as disks or spiral arms, and often exhibit ongoing star formation, leading to a mix of young and old stars.

Irregular galaxies are characterized by their asymmetrical, chaotic shape and lack of a clear structure or spiral arms. They typically have young, hot stars that are actively forming, which is why they have ongoing star formation. They may also have older stars, but they are not the predominant type in irregular galaxies. Irregular galaxies can have a range of colors, including reddish hues, but this is not a defining characteristic. They also do not usually have a disk component or well-defined spiral arms.

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Answer:

a)   y = y₀ - 4.9, v = -9.8 m / s, b)  y =y₀ - 19.6,  v = - 19 m / s

c)  y =y₀ - 44.1, v = - 29.4 m / s

Explanation:

To solve this exercise let us use the kinematic relations

          y =y₀ + v₀ t - ½ g t²

          v = v₀ - g t

They indicate that the body is released therefore the initial velocity is zero v₀ = 0

          y = y₀ - ½ g t²

          v = - gt

a) the position and velocity for t = 1s

         y = y₀ - ½ 9.8 12

         y = y₀ - 4.9

         v = - 9.8 1

         v = -9.8 m / s

the negative sign indicates that the velocity is directed downwards

b) t = 2 s

         y =y₀ - ½ 9.8 2 2

         y =y₀ - 19.6

         v = - 9.8 2

         v = - 19 m / s

c) t = 3 s

        y = y₀ - ½ 9.8 3 2

        y =y₀ - 44.1

        v = - 9.8 3

        v = - 29.4 m / s

Answer:

a molecule is an electrically neutral group of two or

more atoms held together by chemical bonds

Explanation:

Answer:

It can be two or more of the same elements combined together.

It can be one element by itself.

Explanation:

Answer:

The Equivalence Principle of Gravity

Explanation:

The fact that objects fall to earth at the same speed is called the Equivalence Principle of Gravity.

According to the Equivalence Principle of Gravity, all things fall at the same rate when there is little to no air resistance. The value of the acceleration caused by gravity is demonstrated by the force of gravity equation to be a constant that is independent of the mass of the item.

According to Einstein's equivalence principle, it is unnecessary to distinguish between gravitational and inertial forces because they are comparable in nature.

Therefore, the Equivalence Principle of Gravity states that all objects descend to Earth at the same rate.

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Answer:

Your answer here is C

Explanation:

Good Luck

Inertia is the tendency of an object to continue in the state of motion or rest  unless a force acts on it. The state of inertia of a person can be studied and    the force which can change the state can be suggested.

Force is an external agent acts on a body to change it from the state of rest or motion. There are various kinds of forces such as magnetic force, nuclear force etc.

According to Newton's first law of motion, an object will stay at its state of motion or rest until and unless a force acting upon it. This tendency of an object to stay in on the same state is called inertia and this law is called law of inertia.

Inertia can be interpreted in a person because of the tendency to stay in a state. However the force which can be applied to change this situation can be find out appropriately.

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Answer:

no im in a rehab program so we eat the sam shi every day

Explanation:

brainlest?

Explanation:

During lockdown, I ate LOADS OF JUNK FOOD. TRUST ME!!

I gained 14 kg of weight and became 68 kg

just due to junk food.I am 13 btw and at that time I was 5 feet 4 so definitely fat. all those pizzas and burgers and all.then I realised that I have gained weight. I have to REDUCE MY WEIGHT. I am quite determined on what I say. it took me 3 months or so and I finally got back to my original weight. How? just by going for a stroll everyday, eating healthy and constantly working out. eating less is not the solution,eating less calories is the solution.Also, by eating healthy food,I grew taller. I am 5 feet 6 now. So yes, definitely it helps put alot and keep eating healthy food and you will definitely be healthy.

Thank You.

The box accelerates at 1. 0 m/s² to the right because the net force is 17N to the right . This statement clearly depicts the relation between force and acceleration. Hence option A is correct.

Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec².It is a vector quantity. It requires both magnitudes as well as direction to define.

According to Newton's second law of motion, the net force acting on the body is equal to the product of mass and acceleration of the body.

The direction of acceleration is in the direction of net force acted.

Hence option A is correct.

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Answer:

Im not really sure lemme ask my friend he knows about this subject and when he gives me answer ill edit this

Explanation:

Answer:

i dont even know

Explanation:

I just dont know

Answer:dam hold up

Explanation:

Hardness, color , and luster.

But since you can pick one, I would say hardness

The kinetic energy of the drone flying at a height of 100m is 8437.5J.

Kinetic energy refers to the energy possessed by an object because of its motion, equal (nonrelativistically) to one half the mass of the body times the square of its speed.

Kinetic energy of a body can be calculated using the following formula:

K.E = ½mv²

Where;

According to this question, a 75kg drone is flying at 15 m/s at a height of 100m. The kinetic energy can be calculated as follows;

K.E = ½ × 75 × 15²

K.E = 8437.5J

Therefore, 8437.5J is the kinetic energy of the drone.

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The solid object that created the comet's nebulous tail is likely the nucleus of the comet, which is typically made of ice, dust, and rocky material.

Comet is a web application development technique that enables web applications to send and receive data from a server asynchronously without the need for a browser page refresh. It creates an interactive user experience by enabling a continuous connection between the client and server so that data can be exchanged in both directions. This type of communication is also known as a bi-directional, full-duplex connection. Comet is an umbrella term for several techniques for achieving this kind of communication.

The nucleus of a comet can range in size from a few hundred meters to tens of kilometers, though their average size is typically around 5 kilometers. As the comet approaches the Sun, its frozen material turns to gas, which is pushed away from the Sun by the solar wind and forms the nebulous tail that stretches millions of kilometers across the sky.

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Answer:the 2 hours

Explanation: Its just simple math

Answer:

2

Explanation:

hope this helps

Answer:

The GPE, stored is 640 Joules

Explanation:

The given parameters are;

The given mass of the astronaut, m = 80 kg

The height of the top of the lunar lander to which the astronaut climbs, h = 5 m

The gravity strength on the moon, g = 1.6 N/kg

The Gravitational Potential Energy, GPE, stored is given according to the following equation;

GPE stored = m·g·h

Therefore, by substituting the known values, we have;

GPE Stored = 80 kg × 1.6 N/kg × 5 m = 640 Joules

The GPE, stored = 640 Joules.

a) The initial horizontal velocity is V = 10m/s  and the inital vertical velocity is ZERO as the angle is set at 0°, so no vertical component

b) The time of flight can be calculated using the height given

Equation of motion,  h = 0 +\(\frac{gt^2}{2}\)

h=\(\frac{9.8\cdot1.63\cdot1.63}{2}\)

h= 13.01 m

The time of flight can be calculated using the height given

t =\(\sqrt{(2\cdot13\div9.8}\) = 1.6288220358559 sec ≅ 1.63 sec

So  now :

the horizontal Range is

R = Vt = 10 × 1.6288220358559

=16.288220358559 ≅16.29 m

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When separated by 4 meters, the 20,000-kilogram truck and the 3,200-kg automobile are attracted to one other with a force of attraction of roughly 0.0000016748 N. The right response in this case is option A.

Newton's rule of universal gravitation, which says that the force between two things is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers, may be used to compute the force of attraction between two objects. The equation can be written mathematically as:

F = G * (m1 * m2) / r^2

Where:

F is the gravitational constant, while G is the force of attraction.

The two objects' masses are m1 and m2, and their separation from one another's centers is r.

In this instance, the truck weighs 20,000 kg, whereas the automobile weighs 3,200 kg. They are 4 meters apart from one another.

With these values entered into the formula, we obtain:

F = (6.674 × 10^-11 N(m/kg)^2) * (20,000 kg * 3,200 kg) / (4 m)^2

F = 1.6748 × 10^-6 N

Therefore, at a distance of 4 meters, the force of attraction between the 3,200-kilogram automobile and the 20,000-kg truck is roughly 0.0000016748 N.

Option A is therefore the one that comes the closest to this value, at 0.0003 N.

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Answer: C water

Explanation: The explanati is not hard cause the main elements of earth is fire ice water earth

Answer:

A. Gold (Au)

Explanation:

If there is a change in temperature i.e. 12 K, then the Specific heat is 4186J/Kg * K.

The specific heat, denoted by c, is the amount of heat energy required to raise the temperature of one unit of mass (usually one kilogram) of a substance by one degree Celsius or Kelvin. It can be calculated using the following formula:

c = Q / (m * ΔT)

where Q is the amount of heat energy transferred, m is the mass of the substance, and ΔT is the change in temperature.

In this case, we are given that ΔT = 12K, m = 420kg, and c = 4186J/kg*K. Substituting these values into the formula, we get:

c = Q / (m * ΔT)

c = Q / (420kg * 12K)

c = Q / 5040kg*K

We can now solve for Q by multiplying both sides of the equation by 5040kg*K:

c * 5040kg*K = Q

Q = c * 5040kg*K

Q = 4186J/kgK * 5040kgK

Q = 21,076,640 J

Therefore, the specific heat is approximately 4186 J/kg*K.

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Answer:

A) the liquid particals move slower

Explanation:

vapor has a higher temp and have more energy than liquid so it's not c or d. and liquid has a lower boiling point than vapor

A body's intrinsic ability to fend off the consequences of an external load is known as stress.

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Answer:

Parallel combination

Explanation:

When the two resistances are connected in parallel then the equivalent resistance is

\(\frac{1}{R}=\frac{1}{R'}+\frac{1}{R''}\)

To get the minimum resistance of a circuit, the circuit components should be connected in parallel combination.

In the parallel combination, the voltage across each resistor is same and the current is divided in every resistance according to the resistances.

Answer:

spring force = -K × x , where X is elongation or compression in the spring. ( -) sigh shows that the spring force is opposite to the applied force to cause extension.

Potential energy = work done by spring force = integration of Force.

integrate the force (-K × x) over distance 0 to x .

U = 1/2 K × X^2 ( for elongation)

U = -1/2 × K × X^2 ( for compression)

1/second Equals 1.99 x 10-7 radians. Earth rotates at a rate of 1.99 x 10-7 per second.

If the angles were not approximately 1 one of, then the radius times the angle's measurement in radians, or the width of a arc s = r, would be the ratio of the distance by the point located on the circle. The result of substituting into the linear speed formula is v = r t or v = r t.

A pseudovector used in physics to express how quickly the angular location or orientation of an item changes over time is called an angular velocity or rotational velocity.

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The approximately time that takes to stop the stunt driver once she hit the cushion is: 0.4 s

To solve this exercise, the formulas and procedures to be applied are:

Where:

Information about the problem:

Applying the force formula and isolating the acceleration, we get:

F = m * a

a = F/m

a = -2500 N /50kg

a = -2500 kg * m/s² / 50 kg

a = -50 m/s²

Applying the time formula we get:

t = (vf – vi) / a

t = (0 m/s – 20 m/s) / 50 m/s²

t = (– 20 m/s) / -50 m/s²

t = 0.4 s

It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.

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Answer:

D. circumpolar

Explanation:

A circumpolar star is a star, as viewed from a given latitude on Earth, that never sets below the horizon due to its apparent proximity to one of the celestial poles.

-Wikipedia

A precise estimation of the water temperature at Multnomah Falls using only the sheer drop height would not be possible without considering the factors mentioned above.

The steady flow energy equation, also known as Bernoulli's equation, relates the pressure, velocity, and elevation of a fluid along a streamline. However, it does not directly provide a means to estimate the water temperature.

To estimate the water temperature at Multnomah Falls, additional information and considerations are required, such as:

Ambient Temperature: The air temperature in the surrounding environment can provide an indication of the potential range of water temperature.

Source of Water: Determining the source of the water, such as a river, groundwater, or snowmelt, can help infer the temperature characteristics.

Seasonal Variation: Considering the season and the associated temperature trends can provide insight into the potential water temperature range.

Geological and Climatic Factors: Understanding the geological characteristics of the area and the prevailing climate can help in assessing temperature patterns.

Data from Local Sources: Consulting local weather reports, hydrological surveys, or other relevant sources that provide water temperature data in the vicinity of Multnomah Falls can give a more accurate estimate.

It's important to note that water temperature can vary significantly in different locations, depths, and seasons, and it is influenced by various factors such as sunlight exposure, ambient temperature, and thermal properties of the environment.

Hence, a precise estimation of the water temperature at Multnomah Falls using only the sheer drop height would not be possible without considering the factors mentioned above.

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The momentum of object B is 11 kg x m/s.

To find the momentum of object B, we can use the principle of conservation of momentum. This principle states that the total momentum of a system before a collision is equal to the total momentum of the system after the collision.

Therefore, we can calculate the momentum of object B as follows:
Total momentum before collision = Total momentum after collision

The total momentum before collision is the sum of the momentum of object A and the momentum of object B:
Total momentum before collision = 3 kg x m/s + momentum of object B
The total momentum after collision is given as 14 kg x m/s.

So we can set up an equation:
3 kg x m/s + momentum of object B = 14 kg x m/s
Simplifying this equation, we get:
momentum of object B = 14 kg x m/s - 3 kg x m/s
momentum of object B = 11 kg x m/s

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The theory of destructive interference underlies the operation of noise-cancelling headphones.

The process of using passive and active noise control techniques to reduce undesired background and ambient noises is known as noise cancellation.

Active noise cancelling (ANC) adopts a different strategy from passive noise cancellation by "neutralising" incoming sound waves from your surroundings. Passive noise cancellation reduces ambient noise by erecting a "physical shield" to mask sound.

Small microphones built into ANC headphones send out sound waves that interfere with incoming sound waves from the environment, cancelling each other out. It's comparable to adding +3 and -3, where the result is zero (silence).

Both inside and outside the headphones' walls are picked up by the microphones.

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The largest value of stiffness k that makes the transmissibility ratio less than 0.75 is 24.15 N/m.

To find the largest value of stiffness k that makes the transmissibility ratio less than 0.75, we first need to determine the transmissibility ratio.

The transmissibility ratio is given by:

TR = Y/Ymax

where Y is the amplitude of the base motion and Ymax is the amplitude of the response.

We can rewrite the equation of motion as:

x'' + 2ζωn x' + ωn^2 x = Yf(t)

where ζ = c/(2mωn) is the damping ratio, ωn = √(k/m) is the natural frequency, and f(t) = (cY/ωn^2) cos(ωbt) + (kY/ωn^2) sin(ωbt) is the forcing function.

The amplitude of the response can be found by solving for the steady-state solution, which is given by:

x(t) = (Y/ωn^2) [(k - mωb^2) sin(ωbt) + cωb cos(ωbt)] / [(k - mωb^2)^2 + c^2ωb^2]

The maximum amplitude of the response occurs when the denominator is minimized, which gives:

Ymax = (Y/ωn^2) / √(1 - (ωb/ωn)^2)^2 + (2ζωb/ωn)^2)

The transmissibility ratio can now be written as:

TR = Y / [(Y/ωn^2) / √(1 - (ωb/ωn)^2)^2 + (2ζωb/ωn)^2)]

TR can be expressed as a function of k:

TR(k) = Y / [(Y/ωn^2) / √(1 - (ωb/ωn)^2)^2 + (2ζωb/ωn)^2 + k/ωn^2]

We can now use the given value of Y and ωb, along with m and c, to determine ωn and ζ:

ωn = √(k/m) = √(k/100)

ζ = c/(2mωn) = 50/(2*100*√(k/100))

We can now substitute these values into the expression for TR(k) to get:

TR(k) = 0.03 / [0.03 / √(1 - 9/4k) + 75/√k + k/300]

To find the largest value of k that makes TR(k) less than 0.75, we can set TR(k) equal to 0.75 and solve for k:

0.75 = 0.03 / [0.03 / √(1 - 9/4k) + 75/√k + k/300]

Multiplying both sides by the denominator and rearranging, we get:

k^2 - 78.98k + 1677.78 = 0

Using the quadratic formula, we get:

k = 69.53 or k = 24.15

Since we want the largest value of k that makes TR(k) less than 0.75, we choose k = 24.15.

Therefore, the largest value of stiffness k that makes the transmissibility ratio less than 0.75 is 24.15 N/m.

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