an airplane flies horizontally at a speed of 351 km/h and drops a crate that falls to the horizontal ground below. neglect air resistance.part (a) if the altitude of the plane was 580 m, then how far, horizontally in meters, did the crate move as it fell to the ground?

Answer:

(a) t = 0.02111

(b) F = 337.5 N

Explanation:

We can apply work energy theorem to solve this problem,

\(0 - \dfrac{1}{2}mv^2 = F_{avg}.\Delta x\)

(change in kinetic energy = Force applied)

substituting the values given in the question,

\(- \dfrac{0.75}{2}3^2 = F_{avg}.0.01\)

solving we get,

\(F_{avg} = -337.5 \, N\)

We have the equation,

\(F_{avg} = ma_{avg}\)

substituting the value of m and F we get,

\(a_{avg} = -450 \, m/s^2\)

We can calculate the duration of impact using the kinematical equations,

\(v = u + at\)

\(0 = 9.5 - 450t\)

\(t = 0.02111\) s

The time a baseball that is thrown horizontally with a velocity of 15 m/s off a cliff that is 100 meters tall will be in the air is 4.54 seconds.

Velocity can be defined as the rate of change of the object's position with respect to a frame of reference and time.

If a baseball is thrown off a cliff that is 100 meters tall. The ball is thrown horizontally (forwards) with a velocity of 15 m/s. The baseball will be 4.54 seconds in the air.

From the equation, the given parameters are

height of cliff =  100 m

velocity = 15m/s

time = ?

g = acceleration due to gravity = 9.81 m/s²

we have that

S = u + 1/2gt²

100 = 5 + 1/2 * 9.8 * t²

100 - 5 = 4.9 * t²

95 /4.9 = t²

t = √20.65

t = 4.54 seconds.

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Answer:

b?

Explanation:

The distance travelled and the time it takes to travel that distance must be measured in order to determine an object's speed in motion.

Movement is the act or process of moving or changing one's location or position. ability to move with the force of a living body. gait is the term for the way a person walks. Motion can be divided into three categories depending on its type, as follows: linear movement Rotational Motion Motion in oscillations.

Things move in response to forces. They have the power to initiate motion, as well as to slow down, stop, or alter the path of an already moving item. We can say that forces produce changes in velocity because they alter an object's speed or direction. Keep in mind that acceleration is a modification of velocity.

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Let's first resolve the two forces into their components as shown in the diagram below: The larger force (617 N) makes an angle of 46° with the horizontal axis.

Therefore, the horizontal component will be given by:

H = 617 cos 46°H = 617 × 0.69H = 425.73 N

The vertical component will be given by:V = 617 sin 46°V = 617 × 0.73V = 450.66 NOn the other hand, the smaller force (411 N) makes an angle of (90° - 46°) = 44° with the horizontal axis. Therefore, the horizontal component will be given by:H = 411 cos 44°H = 411 × 0.72H

= 296.52 N

The vertical component will be given by:V = 411 sin 44°V = 411 × 0.67V = 274.47 N The resultant horizontal component, R will be given by:R = 425.73 + 296.52R = 722.25 N The resultant vertical component, R will be given by:R = 450.66 + 274.47R = 725.13 N The magnitude of the resultant, R will be given by:R² = (722.25)² + (725.13)²R = √(522198.06)R = 722.82 N The angle that R makes with the larger force (617 N) will be given by:θ = tan⁻¹(725.13/722.25)θ = 45.23° Therefore, the magnitude of the resultant is 722.82 N and it makes an angle of 45.23° with the larger force.

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f_3 = 3v / 2L, is the third lowest standing wave frequency of the tube.

A standing wave, also known as a stationary wave, is a type of wave that appears to be stationary in space and does not propagate like a typical wave. Standing waves are formed when two waves of equal frequency and opposite direction interfere with each other and create a pattern of points of maximum and minimum amplitude, called nodes and antinodes, that do not move with time. The frequency of a standing wave is the number of complete waves that pass a given point in a given unit of time, typically measured in hertz (Hz).

In acoustics, standing waves can occur in closed tubes or containers, such as organ pipes or wine glasses, when the waves reflect off the end of the container and interfere with each other to create the standing wave pattern. The frequency of a standing wave in a tube depends on the speed of sound in the medium filling the tube and the length of the tube.

The formula for the frequency of a standing wave in a tube closed at one end is given by:

f_n = nv / 2L

where n is the mode number (n = 1, 2, 3, ...), v is the speed of sound in the medium filling the tube, and L is the length of the tube.

Since the next higher standing wave frequency is 300 Hz more, we can write two equations for the frequency of the nth and (n+1)Th. modes:

f_n = nv / 2L

f_{n+1} = (n+1)v / 2L + 300 Hz

Dividing the two equations gives:

f_{n+1} / f_n = (n+1) / n + 300 / (nv/2L)

Rearranging and using the fact that f_{n+1} / f_n = (n+1) / n, we can solve for n:

n = (300L / v)

For the 3rd lowest standing wave frequency, n = 3, so we can substitute this back into the first equation to get:

f_3 = 3v / 2L

Note that the speed of sound and the length of the tube are not given, so we cannot calculate the exact frequency of the 3rd mode.

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Example of radiation-induced conditions that follow a linear non threshold dose-response relationship include are  Cancer,Hereditary effects,  Acute radiation syndrome,Radiation-induced cataracts,Radiation-induced skin damage, Radiation-induced infertility

Here are some examples of radiation-induced conditions that follow a linear non threshold dose-response relationship:

It's important to note that the linear non-threshold model is a simplification used for radiation protection purposes and assumes that the risk of radiation-induced conditions extends down to very low doses. However, there is ongoing scientific debate and research regarding the validity of this model, as some studies suggest the possibility of a threshold below which the risk may be negligible.

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Answer:

2.45s

Explanation:

is explanation needed too?

Copernicus's model of the universe differs from Ptolemy's because Copernicus believed the Sun is at the center of the universe and majority of the bodies in the universe revolves around the Sun.

The universe is defined as the open place that contains the planets, stars, galaxies, and all other forms of matter and energy.

There are different models of the universe including which contains the Copernicus's model and Ptolemy's model.

The Copernicus's model of the universe differs from Ptolemy's because Copernicus believed the Sun is at the center of the universe and majority of the bodies in the universe revolves around the Sun.

While the Ptolemy's model of the universe differs from the Copernicus's model because Ptolemy believed that the Earth is at the center of the universe and everything in the universe revolves around the Earth.

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The magnitude of the gravitational force of attraction between two spheres can be calculated using Newton's law of universal gravitation, which states:

F = G * (m₁ * m₂) / r²

Where:

F is the gravitational force of attraction between the spheres,

G is the gravitational constant (approximately 6.67430 × 10^(-11) N m²/kg²),

m₁ and m₂ are the masses of the spheres, and

r is the distance between the centers of the spheres.

Given that the two spheres have equal masses (m) and one sphere has twice the radius of the other, we can denote the radius of the smaller sphere as r and the radius of the larger sphere as 2r.

The distance between the centers of the spheres will be the sum of the radii:

r + 2r = 3r

Now, we can calculate the magnitude of the gravitational force of attraction between the spheres:

F = G * (m * m) / (3r)²

Simplifying further:

F = G * m² / (9r²)

Therefore, the magnitude of the gravitational force of attraction between the spheres is given by G * m² / (9r²).

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Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small using quantum mechanics to the entire universe using general relativity.

Answer:

please ask this question separately

Explanation:

The correct answer is a. Succinate dehydrogenase is an oxodoreductase because it catalyzes the oxidation of succinate to fumarate. Oxidoreductases are enzymes that catalyze oxidation-reduction reactions, where one molecule is oxidized (loses electrons) and another is reduced (gains electrons).

In the case of succinate dehydrogenase, succinate is oxidized (loses electrons) and FAD is reduced (gains electrons) to form FADH2. This reaction is important in cellular respiration as it is part of the electron transport chain and helps generate ATP.
a. Succinate dehydrogenase is an oxoreductase, because it catalyzes the oxidation of succinate to fumarate.

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The pressure drop over a certain length of horizontal pipe is assumed to be a function of the velocity is true because of the relationship between fluid flow and pressure, which is described by the Bernoulli's principle.

The pressure drop over a certain length of horizontal pipe is typically related to the flow rate through the pipe, which is in turn related to the velocity of the fluid. This relationship is described by the Darcy-Weisbach equation,

ΔP = f (L/D) (ρV^2/2)

Where ΔP is the pressure drop, L is the length of the pipe, D is the diameter of the pipe, ρ is the density of the fluid, V is the average velocity of the fluid, and f is the friction factor, which depends on the roughness of the pipe surface and the Reynolds number of the flow.

This equation shows that the pressure drop is proportional to the square of the velocity of the fluid, which means that as the velocity increases, the pressure drop will also increase. Therefore, the pressure drop over a certain length of horizontal pipe can be related to the velocity of the fluid flowing through it.

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Answer:

It completely melts and has a final temperature of 22.4°C

Explanation:

(I am very bad at explaining, I am not a teacher, I am a student but I had exact same question on my test so I wanted to help.)

Okay, well to find the Heat required to melt Ice, we have to use the equation:

Q=(m·cΔT)+(m·hf)

So we can just plug in the values into the equation and see which one adds up too 80,000. (there is probably a better way i just did it this way)

For this situation, we know that:

So we can just change the value of change and temperature and see which one equals 80,000.( I will bold the value of change in temperature.)

Q=(m·cΔT)+(m·hf)

So which one equals 80,000? Equation #3 with the temperature at 22.4 °C

So the answer would be It completely melts and has a final temperature of 22.4°C.

Hope this makes sense, again I am not a teacher I am so bad at explaining, but I did my best. ;)

Light rays bend towards the normal because they slow down when moving from a rarer medium to a denser medium.

The reason behind the refraction of rays of light towards normal is that because slow down when moving from a rarer medium to a denser medium.

If the light rays enter any substance with a higher refractive index (which includes air into glass) then it will slow down. The light always bends towards the ordinary line. If mild travel enters into a substance with a lower refractive index (which includes from water into the air) then it will speed up. Therefore the ray of light always refracted towards the normal.

When the light rays enter from the air into a denser medium like water or glass then the ray of light will refract towards the normal. When light travels from a denser medium into the air, it will refract away from the normal.

So we can conclude that light rays slow down when moving from a rarer medium to a denser medium.

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The value that is measured by the slope of a position-time graph is velocity. It is a vector quantity that measures the rate of change of an object's position.

It is calculated by taking the slope of a position-time graph which can be done by finding the change in position (displacement) divided by the change in time. Velocity is determined by the distance an object moves in a given period of time and its direction of motion. An object's velocity is constantly changing as it accelerates, decelerates, and changes direction.

The formula for velocity is velocity = displacement/time.

Velocity can be represented by a line on the graph that is parallel to the x-axis and has a slope that is equal to the velocity of the object.

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complete question: Please select the word from the list that best fits the definition: Value that is measured by the slope of a position-time graph.

a) Momentum

b) Velocity

c) Acceleration

d) Displacement

Answer:

Who Discovered Gadolinium Gadolinium was only discovered in 1880 by a Swiss chemist called Jean Charles Galissard de Marignac.

Explanation:

When analyzing samples of two minerals which contain small amounts of gadolinium, didymium and gadolinite, he discovered spectroscopic lines that were unrecognisable. Every single element has distinctive spectroscopic lines so he knew he had discovered a new element, and called it gadolinium after Finnish chemist Johan Gadolin.

Answer:

Paul-Émile Lecoq de Boisbaudran

Jean Charles Galissard de Marignac

Answer:

The ways to change the total energy are to either make the hill taller to increase it or make the hill lower to decrease the total energy.

Explanation:

The total mechanical energy of a system is the sum of the total kinetic energy and total potential energy.

Almost all the craters we see on the Moon circular, because the rocks and icebergs that hit the Moon are moving so fast, they explode on impact, making a circular hole. Option 4 is the correct answer.

The observed lunar deformation is much larger than scientists would expect, given the Moon's current orbit and rotation rate. Scientists believe that this extra deformation arises because the Moon “froze” its shape billions of years ago when it orbited closer to Earth and thus had much larger forces pulling on it.

Some nights, the Moon might look like a narrow crescent. Other nights, the Moon might look like a bright circle.

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It will move in a straight line at a steady speed.

Based on specific heat capacity calculated, c ≈ 14.243 J/(g°C), unknown substance has a value much higher than water, ethanol, copper or lead, which means it is likely a metal.

The quantity of heat absorbed per unit mass (kg) of material when its temperature increases 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C) is called specific heat capacity.

To identify the unknown substance, we can use the specific heat formula:

Q = m * c * ΔT

where:

Q is heat absorbed by the substance

m is mass of the substance

c is specific heat capacity

ΔT is change in temperature of the substance

c = Q / (m * ΔT)

c = 5364 J / (25 g * 15°C)

c ≈ 14.243 J/(g°C)

Specific heat capacities of a few common substances:

Water: 4.184 J/(g°C)

Ethanol: 2.44 J/(g°C)

Based on specific heat capacity calculated, unknown substance has a value much higher than water, ethanol, copper or lead, which means it is likely a metal.

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Answer:

many for a hour. I don't know how much I did this week

Explanation:

My goal was to do jogging every morning for around one hour for starters. I felt release of endorphins and I gained lots of positive energy. Organizations tell that it's good to do exercise for 60 minutes and take 1200 steps at least.

Hope this helps

The downward force of magnitude must be applied to the small piston for the lift to raise a load whose weight is Fg = 15.0 kN is 225N.

Given that,

The small piston of a hydraulic lift has a cross-sectional of 3.00 cm^2.

And its large piston has a cross-sectional area of 200 cm^2.

Based on the above information, the calculation is as follows:

Here we use the Pascal's principle,

........... (1)

Here

F denoted Force exerted on the larger piston,

f denoted force that applied to the smaller piston,

A denoted cross-sectional area of the larger piston,

And, a denoted cross-sectional area of the smaller piston.

Now

=  225 N

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In given question both cars have same friction but radius of curvature for car B is more that of radius of curvature of car A. So centrifugal force on B is less that acting on A , because Fcf= Mv² / r, ra is less  than rb . So correct choice is E.

The main cause of sliding is centrifugal force when car take turn, this centrifugal force is balanced by centripetal force provided by friction between road and tires.

When a car takes a turn, the tires experience a force known as the centrifugal force. This force is caused by the car's momentum as it moves around the turn. The centrifugal force is opposed by the centripetal force, which is provided by the friction between the road and the tires.

Both cars have the same amount of friction. However, the radius of curvature for car B is greater than the radius of curvature for car A. This means that the centrifugal force on car B is less than the centrifugal force on car A. The reason for this is that the centrifugal force is directly proportional to the car's mass and the square of its velocity. Since car B has a greater radius of curvature, it experiences less of a centrifugal force.

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Complete Question.

Multiple choice question.

A. The two cars are equally likely to slide off the road because their masses are equal.

B. The two cars are equally likely to slide off the road because their speeds are equal.

C. Car B because it is closer to the outer side of the turn.

D. Car B because the distance it travels around the turn is larger.

E. Car A because it moves through the turn with a smaller radius.

F. Car A because the distance it travels around the turn is smaller.

When a white dwarf star collects matter from a neighboring star, fusion reactions on the surface of the white dwarf cause an increase in temperature and pressure.

This increase in temperature and pressure triggers fusion reactions between the collected matter and the material on the surface of the white dwarf. This can lead to an explosive event known as a nova or, in more extreme cases, a type Ia supernova. This event results in a sudden increase in brightness and the release of a significant amount of energy.The fusion reactions release enormous amounts of energy, which is visible as a bright burst of light.

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Answer:

the heart

Explanation:

length time width is hearts for captain americas sheild sirs iro

Answer:

because if it's won't be wider so the building have a chance to be distracted in any distuction

that's why they are made wider..

Answer:

Explanation:

Let mass of cart be m₁ and m₂

m₁ + m₂ = 1.5 kg

At the time of release , their momentum will be conserved

m₁ v ₁ = m₂ v₂

m₁ v ₁ = (1.5 - m₁ ) x 2 v₁

m₁ = 3 - 2m₁

3m₁ = 3

m₁ = 1 kg

m₂ = .5 kg

Answer: c. The electric force increases

Explanation:

If the distance between two charged particles decreases, the electric force between them increases.

According to Coulomb's Law, the electric force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, the equation can be represented as:

F = k * (q1 * q2) / r^2

Where:

F represents the electric force between the particles.

k is the electrostatic constant.

q1 and q2 are the charges of the particles.

r is the distance between the particles.

As the distance (r) between the particles decreases, the denominator of the equation (r^2) becomes smaller, causing the overall electric force (F) to increase. Conversely, if the distance between the charged particles increases, the electric force between them decreases. This inverse relationship between the distance and electric force is a fundamental characteristic of the electrostatic interaction between charged objects.