What was the first food eaten in space by an american astronaut?.

Answer:

take up space

Explanation:

Matter is any substance that has mass and occupies space.

There are about 4 states of matter which are:

Solids are have a definite shape and a fixed volume.

Liquids are not compressible and they flow

Gases are compressible and have no definite volume

Plasma are free charged particles found in the ionosphere.

The mass of any matter can be quantified and they predominantly takes up space.

Therefore, matter have two physical properties which are mass and that they take up space.

Here is your Answer:

Answer:

gogo

Explanation:

Answer i know they both exhibit the doppler effect, so i believe it is this one.

Explanation:

The total magnitude of the binary star system is approximately 4.89.

To calculate the total magnitude of the binary star system, we need to consider the individual magnitudes of the two stars and combine them. The formula for combining magnitudes is:

m_total = -2.5 * log10(10^(-0.4 * m1) + 10^(-0.4 * m2))

Let's plug in the given values:

m1 = 2

m2 = 3

m_total = -2.5 * log10(10^(-0.4 * 2) + 10^(-0.4 * 3))

Using a calculator, we can evaluate this expression:

m_total ≈ -2.5 * log10(0.01 + 0.001) ≈ -2.5 * log10(0.011) ≈ -2.5 * (-1.958) ≈ 4.89

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Answer:

Vf = 126,85 m/s

Explanation:

En este caso, vamos a asumir que la velocidad inicial de la moneda cuando se deja caer es cero, puesto que no nos lo indican. Al ser la velocidad inicial cero, lo unico que influye en la velocidad de la moneda es la gravedad y la altura, por ende, la siguiente formula nos ayudará a calcularla:

Vf² = Vo² - 2gh   (1)

Pero como la velocidad inicial es cero, y si también asumimos que la dirección de bajada será nuestro eje positivo, entonces:

Vf² = 2gh   (2)

Ahora solo nos queda, reemplazar los valores de altura que es 821 m, y la aceleración de gravedad que es 9.8 m/s² y resolvemos la velocidad:

Vf² = 2 * 9,8 * 821

Vf = √16091,6

Esta debería ser la velocidad con que llega al suelo.

Exitos

La magnitud de la velocidad con la que choca con el suelo es aproximadamente 126.898 metros por segundo.

Si despreciamos los efectos de la viscosidad del aire y la aceleración de Coriolis, entonces el movimiento de la moneda se describe por el movimiento de caída libre, es decir, un movimiento uniforme acelerado debido a la gravedad terrestre. La velocidad final de la moneda es determinada por la siguiente ecuación cinemática:

\(v = \sqrt{v_{o}^{2}+2\cdot a\cdot h}\) (1)

Donde:

Si sabemos que \(v_{o} = 0\,\frac{m}{s}\), \(a = 9.807\,\frac{m}{s^{2}}\) y \(h = 821\,m\), entonces la velocidad final de la moneda es:

\(v = \sqrt{\left(0\,\frac{m}{s} \right)^{2}+2\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (821\,m)}\)

\(v\approx 126.898\,\frac{m}{s}\)

La magnitud de la velocidad con la que choca con el suelo es aproximadamente 126.898 metros por segundo.

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The maximum acceleration of the Italian train is 0.16 m/s².

The maximum acceleration of the car can be determined by applying Newton's second law of motion.

Newton's second law of motion states that, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F = ma

where;

The maximum acceleration of the Italian train is calculated as follows;

a = F/m

where;

a = (100,000) / (640,000)

a = 0.16 m/s²

Thus, the maximum acceleration of the Italian train depends on the maximum force applied  on the force and the maximum speed of the train, since the mass of the train will be constant.

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As the length of the string attached to the pendulum increases, its frequency decreases. Hence, the frequency of shorter string will be higher. The frequency of the string is 0.13 Hz and the length of pendulum is 16 m.

Frequency of an oscillation is the number of wave cycles per unit time. It is the inverse of time period. As the length of the pendulum increases, the frequency of oscillation decreases. Therefore, the shorter pendulum will have greater frequency.

Given time period of pendulum = 8 s.

then length of pendulum L = T²/4π² g.

l = 8²/4×π² × 9.8 m/s² = 16 m.

Frequency of the oscillation is the inverse of its time period. Hence, the frequency of the pendulum for a time period of 8 Hz is :

1/8 = 0.13 Hz.

Therefore, option a is correct.

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Answer:

mass, weight

Explanation:

mass is constant, and weight is dependant on your location

Answer:

I think d

Explanation:

because distance j

has to be the last one that's the only one with distance

Answer:

B

Explanation:

I can't explain right now, mabe later.

The resultant of the forces is 29 N. Option D

The resultant force is the force that acts in a given direction. Now we have two forces as enumerated in the question.

Thus;

Resultant = √(10)^2 + (20)^2 - [2 * 10 * 20 * cos (60 - 30))

Resultant = 29 N

Thus, the resultant of the forces is 29 N.

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Missing parts;

Two forces of magnitude 10N and 20N act on a body in directions making angles 30° and 60° respectively with x-axis what is the resultant force

A.17N

B. 19N

C. 23N

D. 29N

E. 37N​

Answer:

so basically what you gotta do is, and then you can do that but you shouldn't do this

The average speed of the motorcycle is equal to 64 m/s.

The average speed of a moving object can be described as the total distance traveled by it in a definite time interval. The average speed is a scalar quantity because it carries only the magnitude and no direction.

The average speed can be determined from the ratio of the total distance to the time taken to cover that distance.

The average speed formula can be written as follows:

Average speed =  Total distance / total time taken

Given, the distance covered by the motorcycle  = 1600 m

The total time taken by motorcycle = 25 sec

The average speed of the train = 1600/25 = 64 m/s

Therefore, the average speed of the given motorcycle is 64 m/s.

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Answer:

झझकोर देने की कोशिश की है और यह बात उस समय की है जब कुंवर जी के लिए एक ही है कि वह इस बात को भी नहीं

Therefore, to find the first quiet spot, you need to move 0.17 meters away from the wall.

To find the first quiet spot, the distance from the wall needs to be calculated, assuming a sound speed of 340 m/s. The speed of sound in air is about 340 meters per second at standard temperature and pressure, making it an important factor in determining the distance from the wall.

The formula for calculating distance is as follows:

Distance = (n + 0.5) λn

Where, n = 1, 2, 3,…and λn = wavelength of the sound

The first quiet spot is where destructive interference occurs. It is also where the sound waves reflected from the wall are out of phase with the sound waves that are directly from the source. The distance to the first quiet spot from the wall is equal to one-half the wavelength of the sound.

Thus, it can be calculated as follows:

λn = v/f

Where v = speed of sound and f = frequency of the sound.

A quiet spot can be found by calculating the wavelength of the sound and then dividing it by 2.

So, we get;

λ = v/f

= 340 m/s / 1 kHz

= 0.34 m

One-half the wavelength is: (1/2)λ = 0.17 m

The first quiet spot is 0.17 meters from the wall.

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Answer:

should be chemical bond

Explanation:

mass = 30kg

frictional force = coefficient of friction * (mass * g)

g = 9.8 m/s^2

So:

60N = x * 294 N

x = 60 N / 294 N = 0,2

The hippo's center of gravity is located 3.2 meters from its tail.

To determine the distance of the hippo's center of gravity from its tail, we need to consider the weight distribution between its front and rear feet. Given that the hippo carries 80% of its weight on its front foot, we can assume that 80% of the hippo's total weight acts at the front. Let's denote the distance from the tail to the center of gravity as "x."

Since the rear foot is located at the tail, the remaining 20% of the weight acts at the rear foot. Using the principle of moments, we can set up the equation: (80% of the weight) * (distance from front foot to center of gravity) = (20% of the weight) * (distance from rear foot to center of gravity). Plugging in the given values, we have (0.8) * (4.0 - x) = (0.2) * x. Solving this equation, we find x = 3.2 meters. Therefore, the hippo's center of gravity is located 3.2 meters from its tail.

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Answer:

If they are looking at a large enoug h angle of incidence against a relatively calm surface, all the light will be internally reflected, allowing the  swimmers to see each other.

Explanation:

The minimum  speed that the second swimmer must have in order to catch up with the first swimmer by the end of the  pool is; 4.04 m/s

We are given the following facts;

Formula for time taken is;

time = distance/speed

Time taken by swimmer 1 for one leg;

t₁ = 50/3.9

t₁ = 12.82 s

Since swimmer 1 has a head start of 0.45 s, then time that swimmer 2 must use in order to catch up is;

t₂ = 12.82 -0.45

t₂ = 12.37 s

Thus, speed of swimmer 2;

v = 50/12.37

v = 4.04 m/s

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(a) The moment of inertia of the system about the axis can be calculated using the formula for the moment of inertia of a point mass rotating about an axis.

(b) The angular momentum of the system about the axis can be determined by multiplying the moment of inertia by the angular speed.

(c) If the masses are pulled into a smaller radius, the moment of inertia will change, resulting in a new angular momentum for the system.

(d) The new angular speed of each mass can be calculated using the principle of conservation of angular momentum.

(e) The change in energy of the masses can be determined by comparing the initial and final kinetic energies of the system.

(a) To calculate the moment of inertia of the system about the axis, we consider the two point masses rotating at a given radius. The moment of inertia for each point mass is given by the formula I = m * r², where m is the mass and r is the radius.

Since there are two masses, we can calculate the total moment of inertia by summing the individual moments of inertia.

(b) The angular momentum of the system is determined by multiplying the moment of inertia by the angular speed. Using the formula L = I * ω, where L is the angular momentum, I is the moment of inertia, and ω is the angular speed, we can find the angular momentum of the system.

(c) If the masses are pulled into a smaller radius, the moment of inertia will change. We can calculate the new moment of inertia using the same formula as in (a) but with the new radius. With the new moment of inertia, we can determine the new angular momentum of the system.

(d) To find the new angular speed of each mass, we apply the principle of conservation of angular momentum. The initial angular momentum of the system is equal to the final angular momentum. By rearranging the equation L = I * ω and solving for ω, we can calculate the new angular speed.

(e) The change in energy of the masses can be determined by comparing the initial and final kinetic energies of the system. The initial kinetic energy is given by (1/2) * I * ω², where I is the initial moment of inertia and ω is the initial angular speed.

Similarly, the final kinetic energy can be calculated using the new moment of inertia and angular speed. The difference between the initial and final kinetic energies represents the change in energy of the masses.

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MTTF or Mean Time to Failure can be calculated using the given data. The term MTTF is often used to describe the expected lifetime of electronic devices and other items.

Here is how to calculate MTTF when given data:(c) Life testing was made on six non-replaceable) electrical lamps and the following results were obtained.

Calculate MTTF.The following data has been given:Number of lamps, n = 6Total time, T = 10000 hoursFailures, f = 2MTTF formula is given as:MTTF = T / n * fWhere, T = total time during which the test was conducted.n = the number of items tested.f = the number of items failed.Using the given data, we can calculate the value of MTTF as follows:MTTF = T / n * f = 10000 / 6 * 2= 1666.67 hoursTherefore, the MTTF of the six non-replaceable electrical lamps is 1666.67 hours.

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The downward momentum initially given is carried by the exhaust gases expelled from the rocket engines.

According to the law of conservation of momentum, the total momentum of a system remains constant if no external forces act on it. In the case of a rocket launching from a launch pad, the upward momentum of the rocket is balanced by an equal and opposite downward momentum given to something else in the system.

Typically, in rocket launches, the downward momentum is given to the exhaust gases expelled from the rocket engines. As the rocket engines expel gases at high speeds in the downward direction, the gases carry a significant amount of momentum in that direction. This downward momentum of the exhaust gases is equal in magnitude but opposite in direction to the upward momentum of the rocket.

So, in the scenario described, the downward momentum initially given is carried by the exhaust gases expelled from the rocket engines.

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Energy and matter are both conserved within natural processes. It follows that while energy and matter can adopt different forms, they cannot be produced or extinguished. Different types of matter and energy can combine, and energy and matter frequently cycle within a system.

Explain energy.

Energy is the ability to perform tasks. It could appear in numerous different forms, such as potential, kinetic, thermal, electrical, chemical, nuclear, etc. Additionally, there is heat and work, which is energy being transferred from one entity to another.

The most important source of chemical energy for sustaining life is found in food. The three states of matter—liquid, solid, and gas—are essential because matter and energy move in concert along food networks.

An ice cube composed of water, for instance, changes into liquid water when you add energy, and when you add even more energy, it turns into steam. The type of matter and the quantity of matter are the same as in the original cube, but the level of energy may be higher or lower.

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Answer:

The weight and the mass of an object are related because the weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. w=mg

a. The shift of the LM curve to the left occurs due to a decrease in the money supply or an increase in the demand for money.

b. Two reasons for a steep IS curve are High Investment Demand and Inflexibility in Investment.

The LM curve shows the various combinations of interest rates and income that bring about the equality of the supply and demand for money.

Below are three reasons for the leftward shift of the LM curve:

1. Decrease in Money Supply: The leftward shift of the LM curve can occur if the money supply decreases. This causes the interest rates to rise because the demand for money is greater than the supply.

2. Increase in Money Demand: An increase in the demand for money can lead to a leftward shift of the LM curve. This happens when people want to hold more money than is available in the economy, and the interest rate rises as a result.

3. Increase in Prices: An increase in prices causes a leftward shift of the LM curve. This is because, at higher prices, people need more money to conduct their transactions, and an increase in the money supply is required to keep the interest rate constant.

Now, moving on to the steep IS curve:

1. High Investment Demand: A steep IS curve may occur if there is high investment demand. This happens when businesses are optimistic about the future and invest more, causing the demand for credit to increase and the interest rates to rise.

2. Inflexibility in Investment: A steep IS curve can also be caused by inflexibility in investment. This occurs when businesses are unwilling to change their level of investment due to economic conditions, and any changes in the interest rates have a significant effect on investment and output levels.

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This is a uniform rectilinear motion (MRU) exercise.

To start solving this exercise, we obtain the following data:

To calculate the distance, multiply the speed by the time.

We apply the following formula: d = v * t

We clear our data in the formula:

\(\bf{d=3.8\dfrac{m}{\not{s}}*15 \not{s} }\)

\(\bf{d=57 \ m}\)

The baseball in 15 seconds will roll a distance of 57 meters.