An astronaut initially stationary fires a thruster pistol that expels 48 g of gas at 785 m/s. The combined mass of the astronaut and pistol is 65 kg. How fast and in what direction is the astronaut moving after firing the pistol?
Hint: Astronaut is in space.

The time taken for the stick that the bird dropped to reach the ground is 3.96 seconds.

The time taken for the stick that the bird dropped to reach the ground is determined the using formula below:

h = ut + ¹/₂ * g * t²

where the given parameters are given below:

h = 77.0 meters

u = 0

t = ?

g = 9.81 m/s²

Solving for the time required:

77.0 = 0 * t + ¹/₂ * 9.81 * t²

t² = 77.0 * 2 / 9.81

t² = √15.7

t = 3.96 seconds

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The pump delivers 8.36 J of kinetic energy to the water every second.

To calculate the kinetic energy delivered by the pump to the water every second, we first need to determine the power output of the solar panel. Power is defined as the rate at which energy is transferred, so we can calculate it by multiplying the voltage and current:

Power = Voltage x Current

Power = 10 V x 0.25 A

Power = 2.5 W

Next, we need to take into account the efficiency of the pump, which is 30%. This means that only 30% of the power input to the pump is converted into the kinetic energy of the water. Kinetic energy is defined as 1/2 x mass x \(velocity^2\). Assuming the mass of the water being pumped is constant, we can calculate the velocity of the water by dividing the power output of the solar panel by the power required to operate the pump at its 30% efficiency:

Power required = Power output / Pump efficiency

Power required = 2.5 W / 0.3

Power required = 8.33 W

Now we can use the power required to calculate the velocity of the water:

Power required = 1/2 x mass x \(velocity^2\)

8.33 W = 1/2 x mass x \(velocity^2\)

Rearranging the equation, we get:

velocity = sqrt(8.33 W / (1/2 x mass))

Assuming the mass of the water being pumped is 1 kg, the velocity of the water is:

velocity = sqrt(8.33 W / (1/2 x 1 kg))

velocity = 4.08 m/s

Finally, we can calculate the kinetic energy delivered by the pump to the water every second:

Kinetic energy = 1/2 x mass x \(velocity^2\)

Kinetic energy = 1/2 x 1 kg x \((4.08)^2\)

Kinetic energy = 8.36 J

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The electric field in part (a) of the figure most rapidly approaches zero. This is because the electric field is inversely proportional to the square of the distance between the charges.

Electricity is a form of energy that exists in nature and is the flow of electrical power or charge. It is a fundamental part of the universe, and is one of the basic building blocks of modern science and technology. Electricity is used to power a wide range of electronic devices, including computers, phones, televisions, and appliances. It is also used to light homes and businesses, to power transportation systems, and to provide heating and cooling to homes and businesses.

the distance between the positive and negative charge increases exponentially, whereas in part (b), the distance is constant. Therefore, the electric field in part (a) decreases much more rapidly than in part (b).

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Answer:

apply more energy to the object with more mass

Explanation:

Answer:

soil

Explanation:

CORRECT

Answer:

soil

Explanation:

Hope this will help

Answer:

negatively

Explanation:

Given:

• Length of beam = 7 m

• Mass of beam = 50 kg

• Mass of person = 60 kg

• Distance of the person from the left = 3.6 m

Let's find the tensions, T1 and T2.

First make a free body sketch:

Here, the net torque = 0.

To find the tension, T1, we have:

Where:

l = 7 m

mp = 60 kg

g is acceleration due to gravity = 9.8 m/s²

l1 = 3.6 m

mb = 50 kg

Thus, we have:

Therefore, the tension T1 = 530.6 N.

To find the tension T2, we have:

Thererfore the tension T2 = 547.5 N

• ANSWER:

T1 = 530.6 N

T2 = 547.4 N

The speed of the  Toyota Corolla would have  been 143.9 mph.

The acceleration of the F-15 can be calculated as follows:

Acceleration = Velocity Change / Time = (Take-off Speed) / Time

where;

Take-off Speed = √(2dg /t²)

Take-off Speed = √(2 x  (270 ft)  x 32.2 ft/s² / (2 s)²)

T  = √(17496) = 131.6 ft/s

Acceleration = Velocity Change / Time

= (131.6 ft/s) / (2 s) = 65.8 ft/s²

We can use the same acceleration to launch the Toyota Corolla, and calculate its final velocity:

Final Velocity = Initial Velocity + Acceleration x Time

where;

Final Velocity = 0 + (65.8 ft/s²) * (2 s) = 131.6 ft/s

Finally, we can convert the velocity from feet per second to miles per hour:

Velocity (mph) = Velocity (ft/s) x (1 hour/3600 s) x (5280 ft/mile)

= 131.6 ft/s x  (1 hour/3600 s)  x (5280 ft/mile)

= 143.9 mph

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Answer: Protons are positively charged particles

Explanation:

Answer:

v = 2.5 mi/h

Explanation:

The velocity of an object is defined as the time rate of change of its position. In other words the velocity of an object is just a ration of displacement covered by the object to the time taken by the object, to cover that distance. So, in this case we will use the same formula or equation to calculate the velocity of the man. The formula is as follows:

v = s/t

where,

v = velocity of the man = ?

s = distance of the trail = 5 miles

t = time required to complete the trail = 2 h

Therefore,

v = 5 miles/ 2 h

v = 2.5 mi/h

Because of Kinetic Theory Postulate, the gas molecule's collision will affect.

Gases can be compressed because most of the volume of gas is an empty space according to Kinetic Molecular theory. If we compress a gas without changing its temperature, the average K.E of the gas particles remains the same. There is no change in the speed of the gas molecules with which the particles move in a container, but the container is smaller. So particles travel from one side of the container to the other in a very small period of time. So it means that they strike the walls mostly. Any increase in the frequency of collisions with the walls must increase the pressure of the gas. from Boyle's law, the pressure of gas becomes more significant as the volume of the gas becomes smaller have opposite relation.

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The vertical velocity of the projectile increases but reaches zero at the maximum height and begins to decrease.

When we talk of the projectile, we are talking about the object that is moving along a parabolic path. Hence the object that is undergoing the projectile motion is going to have a curved path. Take an instance, when you kick a soccer ball, you have to notice that the ball would tend to curve as it moves up in the air and then begins to descend. That is a typical example of a projectile motion.

Now, we have to note that at the maximum height, the vertical velocity of the object would be zero. When I throw an object up, the vertical velocity of the object would continue to increase until the object reaches the maximum height where the vertical velocity is zero and then the vertical velocity of the object begins to decrease as shown in the image.

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Gamma: 4

Infrared: 1

X-Ray: 3

Visible Light: 2

Infrared has the longest wavelength between the four options, meaning that it has the lowest frequency. Since the longer the frequency, the lower the frequency. While the shorter the wavelength, the higher the frequency.

The portions of the electromagnetic spectrum are called from greatest to lowest energy: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves. Microwaves (such as those used in microwave ovens) are a subset of the electromagnetic spectrum's radio wave segment.

Next would be visible light since it has the second longest wavelength out of the given options. Then it would be X-Ray. And finally Gamma since it has the shortest wavelength.

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Answer:

A flip is also called a reflection

Answer:

B

Explanation:

just took the test

Answer:

b

Explanation:

Answer:

open system

Explanation:

The open system type of system is the ocean option (C) open system is correct.

It is defined as the energy that continuously comes from the sun. As we know, the sun is the greatest source of energy. The sun's radiation reaches the earth and can be utilized as heat energy.

The question is incomplete.

The complete question is:

Solar radiation is absorbed by the ocean. The absorbed energy evaporates water from the ocean. As water vapor (mass) enters the atmosphere it carries with it the heat used to evaporate the water and raises the air's humidity. What type of system is the ocean?

As we know,

An open system is one that responds to the movement of information, energy, and/or material between both the and its surroundings.

Thus, the open system type of system is the ocean if the water vapor (mass) enters the atmosphere it carries with it the heat used to evaporate the water and raises the air's humidity.

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F=m*a

T = 142N

Work = Force x distance

distance = 6.1 M

Force = 142 x cos 37 = 113.4 N

W= 113.4N x 6.1M = 691.78 J

Answer:

Explanation:

The weight of a body is defined as the force with which it is attracted towards the centre of a planet. A spring balance measures it. It's unit is Newton ( N ) in the SI system and dyne in the CGS system.

Hope I helped!

Best regards!

Weight is force.

The CGS unit of force is the dyne.

The SI unit of force is the Newton.

An atom with great electronegativity is able to attract electrons towards itself in a chemical bond. This means that it is able to form strong covalent bonds with other atoms, and can also participate in ionic bonding by attracting electrons away from other atoms.

Additionally, an atom with high electronegativity is able to exert a greater degree of control over the distribution of charge within a molecule, making it an important factor in determining the overall reactivity and behavior of the molecule.

Electronegativity is a measure of an atom's ability to attract electrons towards itself when it is part of a chemical bond. In other words, it is a measure of an atom's ability to pull electrons away from other atoms in a molecule. Electronegativity is an important concept in chemistry, as it helps predict how atoms will behave in chemical reactions.

Electronegativity is typically measured on a scale called the Pauling scale, named after the American chemist Linus Pauling. The scale ranges from 0.7 (for the least electronegative element, francium) to 4.0 (for the most electronegative element, fluorine). Elements towards the right side of the periodic table, such as the halogens and oxygen, are generally more electronegative than elements towards the left side, such as the alkali metals.

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Answer: The ability to do work.

Explanation: Scientists define energy as the ability to do work. There is potential energy (where an object at rest has the capacity to have motion) and kinetic energy (where an object is in motion).

A white dwarf explodes as a supernova due to the accumulation of mass that pushes it close to the 1.4 times the Sun's mass limit, also known as the Chandrasekhar limit.

When mass is dumped onto the white dwarf, the core's pressure increases, leading to the degenerate pressure of electrons. This process prevents further gravitational collapse. However, when the mass approaches the limit, the core becomes unstable and can no longer support the electron degenerate pressure.

As a result, the white dwarf collapses under its own gravity, leading to a supernova explosion. It is important to note that the buildup of iron in the core is not a primary factor in white dwarf supernovae, as this occurs in massive stars, not white dwarfs.

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The Redfield ratio is the ratio of various chemical elements present in the average phytoplankton biomass. This defines the stoichiometry of photosynthesis and remineralization reactions.

The Redfield ratio is 106:16:1 across the ocean. Many models predict that a warmer ocean will hold less carbon because phytoplankton will become smaller as the ocean warms and bring less carbon to the seafloor as they die. Carbon nitrogen and phosphorus are the most important of these nutrients and CNP.

A ratio between 100:5:1 and 100:10:1 should be maintained to ensure maximum microbial activity in aerobic wastewater treatment. Many trace elements or micronutrients are also required. This is because a specific form of nitrogen found in the air nitrogen gas cannot be assimilated by most living organisms or require nitrogen in solid form.

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The potential energy of the spring-mass system when the spring is only stretched by our distance of a/2 is 2.5 Joules.

The potential energy of a spring for a particular mass spring system is given by,

U = 1/2kx²

x is the extension in the spring,

K is the spring constant.

If the spring is stretched by a distance of a then the potential energy of the mass spring system,

10 = 1/2ka²

If the spring mass-system is only stretched by a distance of a/2, then let us say that potential energy of the system is U',

U' = 1/2k(a/2)²

U' = 1/2ka²/4

Putting, 1/2ka² = 10,

U' = 10/4

U' = 2.5 Joules.

So, the potential energy of the system is now 2.5 joules.

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Answer:

i. + 22.5 m ii. 4.0 m

Explanation:

i. Image distance

Using the lens formula

1/u + 1/v = 1/f where f = focal length = + 18.0 m, u = object distance = distance of shark away from lens = + 90.0 m and v = image distance from lens = unknown

So, we find v

1/v = 1/f - 1/u

= 1/+18 - 1/+90

= (5 - 1)/90

= 4/90

v = 90/4

= + 22.5 m

So the image is real and formed 22.5 m away on the other side of the lens.

ii Length of Shark

Using the magnification formula, m = image height/object height = image distance/object distance. image height = 1.0 m where object height = length of shark.

m = image distance/object distance

= v/u

= +22.5/+90

= 0.25

0.25 = image height/object height

So,

object height = image height/0.25

= 1.0 m/0.25

= 4.0 m

So, the length of the shark is 4.0 m

Answer:

Emphasis on public safety can surely reduce the risk for various groups of population

1. Proper education and training must be provided to make them aware of the risks and how they can manage those risks.

2. Proper rules and regulation must be made and strictly followed for example traffic rules so as to avoid accidents.

3. Disaster management teams should to formed to ensure minimal loss of humans and resources during any natural calamity.

4.Eradication of poverty and illiteracy should be priority so as to ensure people focus on more important issues in life rather than involve themselves in trivial things.

Explanation:

Answer:

a

Explanation:

The conversion of 17 degrees The conversion of 17 degrees Celsius to Fahrenheit is 62.6 degrees Fahrenheit.

The equation F = 9/5C + 32 relates temperature measured in degrees Celsius (C) to degrees Fahrenheit (F). The formula is used to convert temperatures from Celsius to Fahrenheit , and vice versa. To use the formula, you simply plug in the known temperature in Celsius (or Fahrenheit), and then solve for the unknown temperature in Fahrenheit (or Celsius).

To convert Celsius to Fahrenheit, you would use the formula F = 9/5C + 32, where C is the temperature in Celsius and F is the temperature in Fahrenheit. Thus, for 17 degrees Celsius, the formula would be F = 9/5(17) + 32 = 62.6 F.

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A sprinter weighing 47 kg must apply 705 N of horizontal force to the starting blocks in order to achieve this acceleration.

acceleration describes the speed and direction changes in velocity over time.When something moves faster or slower down in a straight line, it is said to be accelerating.

Positive acceleration is a property of objects that are accelerating and travelling in the right direction.In the first illustration, positive acceleration was demonstrated by the moving car.The vehicle is accelerating as it moves forward and is travelling in a favorable direction.

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