a grocery sack can withstand a maximum of 275 n before it rips. will a bag holding 22.0 kg of groceries that is lifted from the checkout counter at an acceleration of 5.0 m/s2 hold?

Therefore, the work done by the pushing force is 400 Joules.

The work done by a force can be calculated using the equation W = Fd cosθ, where W is the work done, F is the force applied, d is the distance covered, and θ is the angle between the force and the direction of motion.
In this case, the force on the crate is parallel to the slope, so the angle θ is 0 degrees. The force applied is the weight of the crate, which is given as 80 N. The distance covered is 5.0 m. Plugging these values into the equation, we get:
W = (80 N)(5.0 m) cos(0°)
Since cos(0°) = 1, the equation simplifies to:
W = (80 N)(5.0 m)(1)
W = 400 J
Therefore, the work done by the pushing force is 400 Joules.

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Explanation:

The density of silver is 10.5g/cm3

=2500.0g/10.5g/cm3

=238.09cm3

238.1cm3 to nearest tenth.

I hope my answer helps. Please mark as brainliest.

Voltage-gated sodium channels open upon reaching threshold potential. Therefore, option (B) is correct.

Sodium channels can be described as integral membrane proteins that form ion channels, conducting sodium ions through a cell's membrane. They belong to the cation channels and can be divided according to the trigger that opens the channel for ions, i.e. either a voltage change.

In excitable cells such as myocytes, neurons, and certain kinds of glia, sodium channels are responsible for the developing phase of action potentials. These channels have three different states called resting, active and inactive states. Even though the resting and inactive states will not allow the ions to flow through these channels the difference exists w.r.t. their structural conformation.

Sodium channels contain large alpha subunits that are related to proteins, such as beta subunits. An alpha subunit produces the core of the channel and is also functional on its own.

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Answer: false

Explanation:

the more active you are, the more calories you are burning. consuming less calories is not ideal, you need to eat more since you are burning more than normal.

Answer:False

Explanation:The more active you are, the more calories you burn. Calories are a form of energy and you need to regain that energy by eating more calories

Energy can neither be created nor destroyed during a chemical reaction but it can only be transformed from one form of energy to another form of energy.

Energy transformation refers to energy conversion from one form of energy to another form of energy.  such as in a hydroelectric dam that transforms the kinetic energy of water into electricity. The work of the energy transformations that take place in living organisms the leads to work.

While energy can be transformed, the total quantity of energy remains the same so  this is known as energy conservation.

So we can conclude that Energy transformation also known as energy conversion, is the procedure of changing energy.

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Answer:

The height of the cliff is approximately 127.31 meters

Explanation:

The given parameters are;

The upward speed of the ball = 30 m/s

The time after the ball is thrown before it lands = 9 s

We have;

The time to maximum height;

v = u - g·t

Where;

v = The velocity at maximum height = 0 m/s

u = Initial velocity = 30 m/s

g = The acceleration due to gravity = 9.81 m/s²

∴ 0 = 30 - 9.81 × t

t = 30/9.81 = 3.06 s

The maximum height can be obtained from;

v² = u² - 2·g·s

v = 0 m/s

u² = 2·g·s

30² = 2 × 9.81 × s

s = 30²/(2×9.81) = 45.87 m

The time from maximum height to landing = 9 - 3.06 = 5.942 s

The height to landing

s = u·t + 1/2·g·t².

Here, u = 0 m/s

s = 0×5.942 + 1/2×9.81×5.942² = 173.1766 m

s = 173.1766 m.

The height of the cliff = 173.1766 m. - 45.87 m. ≈ 127.31 m.

Governments assist in enhancing the infrastructure necessary for companies to flourish and helps business provide the goods and services that people need and want.

What is economics?

Economics is the study of how limited resources are used to create outputs, such as commodities and services, that are then distributed among individuals. Resources serve as the resources for creating outputs. Products and services are created by combining resources. The necessary raw ingredients are provided by land and natural resources. Raw materials are turned into finished products and services by labor.

Businesses perform better when they can effectively transport raw materials to factories and deliver finished goods to plants and markets. Governments assist in enhancing the infrastructure necessary for companies to flourish. Roads, bridges, rail lines, airports, seaports, energy transmission lines, and telecommunications networks are all included in this.

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11.The time at 75° East longitude would be 1 hour and 20 minutes behind. 12.The time at 135° degrees East longitude would be 4 hours ahead. and 13. the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM.

At 2:00 AM at 90° East longitude, the time at 75° East longitude would be 1 hour and 20 minutes behind. This is because for every 15 degrees of longitude, there is a time difference of approximately 1 hour. Since the two longitudes in question have a difference of 15 degrees, we can divide this by 15 to calculate the time difference.

If it is 8:00 PM at 15° East longitude, the time at 135° East longitude would be 4 hours ahead. Similarly, for every 15 degrees of longitude, there is an approximate time difference of 1 hour. Since the two longitudes in question have a difference of 120 degrees, we can divide this by 15 to calculate the time difference.

There is a 7-hour difference** between 105° West longitude and the Prime Meridian (0° longitude). The Prime Meridian, passing through Greenwich, England, serves as the reference point for determining time zones. As one moves westward from the Prime Meridian, each 15 degrees of longitude corresponds to a time difference of approximately 1 hour. Therefore, the time at 105° West longitude would be 7 hours behind the time at the Prime Meridian.

If it is 9:30 AM in New York (41° North latitude, 75° West longitude), the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM. The latitude does not affect the time difference between the two locations. However, since both locations have the same longitude (75° West), they would experience the same local time. The time difference between different latitudes is primarily significant for determining time zones rather than the actual time within a specific time zone.

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Diffraction is the change in a wave's direction as it travels around barriers. Diffraction is observed in both light and sound waves. This means that options 1 and 2 are wrong.

For any opening or slit, waves with longer wavelengths bend more than waves with shorter wavelengths. If the wavelength is smaller than the opening, it would be difficult for diffraction to occur. Thus, the correct option is

It occurs best when the slit width is less than the wavelength of a wave.

Answer:

600 m/s

Explanation:

10 m/s × 60 seconds

Answer:

600m

Explanation:

1 minute have 60 sec and the speed is 10m/s

distance = speed x time

60x10=600

The friction force applied to the block performs nonconservative work

on the system.

The formula of the friction force F = μN

where,

F = friction force

μ = coefficient of friction

N = normal force

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A 15 m diameter Ferris wheel would need to make approximately 1.75 revolutions per minute for the passengers to feel weightless at the topmost portion of the trip.

To determine the number of revolutions per minute a Ferris wheel with a 15 m diameter would need to make for passengers to feel weightless at the topmost portion of the trip, we can use the concept of centripetal acceleration and the condition for weightlessness.

At the topmost portion of the Ferris wheel, the passengers would experience a condition of weightlessness when the centripetal acceleration is equal to the acceleration due to gravity.

The centripetal acceleration (ac) is given by the formula:

ac = (v^2) / r

Where:

In this case, the radius of the Ferris wheel is half of the diameter, so r = 15 m / 2 = 7.5 m.

At the topmost portion of the Ferris wheel, the centripetal acceleration is equal to the acceleration due to gravity, which is approximately 9.8 m/s^2.

Therefore, we have:

(v^2) / r = 9.8 m/s^2

Rearranging the equation, we can solve for v^2:

v^2 = 9.8 m/s^2 * r

Substituting the value of r, we get:

v^2 = 9.8 m/s^2 * 7.5 m

Simplifying, we find:

v^2 = 73.5 m^2/s^2

To find the linear velocity (v), we take the square root:

v ≈ 8.57 m/s

Now, to convert this linear velocity to revolutions per minute, we need to calculate the number of revolutions made per minute.

The circumference of the Ferris wheel is given by:

C = 2πr

Substituting the value of r, we get:

C = 2π * 7.5 m

The distance covered in one revolution is equal to the circumference of the Ferris wheel.

The time taken for one revolution is 1 minute.

The linear velocity (v) is equal to the distance covered (C) divided by the time taken (1 minute).

Therefore, we have:

v = C / 1 minute

8.57 m/s = C / 1 minute

Simplifying, we find:

C ≈ 8.57 m

Since the distance covered in one revolution is approximately 8.57 m, the number of revolutions per minute is given by:

Revolutions per minute = Total distance traveled / Distance covered in one revolution

Revolutions per minute = 15 m / 8.57 m

Revolutions per minute ≈ 1.75 revolutions per minute

Therefore, a 15 m diameter Ferris wheel would need to make approximately 1.75 revolutions per minute for the passengers to feel weightless at the topmost portion of the trip.

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The correct answer to this question is option b) a counterclockwise and inward spiral. This means that as we look down at a low-pressure system from above, the surface winds move in a counterclockwise direction toward the center of the system.

These winds then converge and move in an inward spiral toward the center of the low-pressure system. This pattern of wind circulation around a low-pressure system is known as cyclonic circulation, and it is caused by the Coriolis effect.

The Coriolis effect is a phenomenon where the rotation of the earth causes moving objects, such as air molecules, to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

As air moves towards a low-pressure system, it is deflected to the right in the Northern Hemisphere, causing it to move in a counterclockwise direction around the system. At the same time, the inward movement towards the center is due to the fact that air is converging towards the low-pressure center.

Overall, understanding the surface wind circulation around a low-pressure system is important for predicting weather patterns and identifying potential storms. Hence, b is the correct option.

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627 joules of energy are required to heat up 1 kg of water by 15°C.

To calculate how much energy is required to heat up 1 kg of water by 15°C, we need to use the following formula:

Energy = mass x specific heat capacity x temperature change

where mass is the mass of the substance being heated, specific heat capacity is the amount of energy required to heat up 1 gram of the substance by 1°C, and temperature change is the change in temperature.

To calculate the energy required to heat up 1 kg of water by 15°C, we can plug in the values:

Mass = 1 kg

Specific heat capacity = 4.18 J/g°C

Temperature change = 15°C

Using the formula:

Energy = 1 kg x 4.18 J/g°C x 15°C = 627 J

Therefore, 627 joules of energy are required to heat up 1 kg of water by 15°C.

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Answer:

My believe the answer is

A.) or B.)

Explanation:

Here is why I think A is the answer.

If we use the process of elimination, it would look like this,

a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.

This makes sense because we all know in winter the weather is very cold and freezing.

b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.

I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.

c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.

This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.

d) Porque la temperatura del aire es igual a la temperatura del cuerpo.

This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.

If the mixture is thermally isolated from its surroundings, then it, loses thermal energy to the environment outside as it comes to a final temperature. The correct answer is d.

When the sample of lead is placed in the water, heat will flow from the lead to the water until they reach a common final temperature. Since the final temperature will be less than the initial temperature of the lead, heat must have flowed out of the lead into the surroundings, causing the lead to lose thermal energy to the environment outside the system.

Since the mixture is thermally isolated from its surroundings, no thermal energy is exchanged between the system (lead and water) and the environment during the process. However, heat can still flow within the system itself until thermal equilibrium is reached. Option d is correct.

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Take the direction of motion to be the positive direction. The crate slows to a rest from 30.0 m/s in a matter of 5.0 s, so it has acceleration a such that

0 = 30.0 m/s + a (5.0 s)   →   a = -6.0 m/s²

At the moment its speed is 0, the crate has a net force of s + f acting in negative direction, where s and f denote the magnitudes of the stopping force (s = 250 N) and the friction force, respectively. By Newton's second law, we have

(-s) + (-f) = (100 kg) (-6.0 m/s²)

250 N + f = 600 N

f = 350 N

The friction force is proportional to the normal force by a factor of µ, the coefficient of kinetic friction. There is no movement in the up- and downward directions, so Newton's second law says

(-w) + n = 0

where w is the weight of the crate and n is the magnitude of the normal force. So

n = w = (100 kg) (9.80 m/s²) = 980 N

Then

f = µ n

350 N = µ (980 N)

µ = (350 N) / (980 N) ≈ 0.357

Given

The electric flux is

Radius of the sphere,

To find

a. The flux through a gaussian sphere with radius of 29.0 cm.

b. The magnitude of the charge

Explanation

a. Since the gaussian sphere covers the same charge so the electric flux through both the sphere will be same.

Thus the required flux is

b.

The magnitude of the charge is

Conclusion

a. The flux is

b. The charge is

The eccentricity of Pluto's orbit is 0.25.

To find the eccentricity of Pluto's orbit, we can use the formula:

eccentricity (e) = (aphelion distance - perihelion distance) / (aphelion distance + perihelion distance)

Given the perihelion distance as 4.43×10^9 km and the aphelion distance as 7.37×10^9 km, we can substitute these values into the formula:

eccentricity (e) = (7.37×10^9 km - 4.43×10^9 km) / (7.37×10^9 km + 4.43×10^9 km)

Simplifying the expression:

eccentricity (e) = 2.94×10^9 km / 11.8×10^9 km

eccentricity (e) = 0.25

Therefore, the eccentricity of Pluto's orbit is 0.25.

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Answer:

A change of odor

Hope this helps! :)

Answer:

convection

Explanation:

Convection is a mode of heat transfer in which the molecules near the heat source get heated up, expand, become less dense, and rise upwards. The cooler molecules, on the other hand, sink to the bottom and are eventually heated up. Thus the transmission of heat by the movement of heated particles is called convection.

We have discovered meteorites with ALL of the following sources, EXCEPT one being a piece of the comet Halley, among the identified meteorites.

Our solar system is where all meteorites originate. Most of them are pieces of ancient asteroids that shattered into smaller pieces in the asteroid belt, which is situated between Mars and Jupiter.

Asteroids are remains of the solar system's creation, which occurred around 4.6 billion years ago. Early on, the formation of Jupiter stopped any planetary bodies from forming in the space between Mars and Jupiter, causing the small particles that were already present to smash and shatter into the asteroids we know today.

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The shape of a blackbody spectrum is a curve that represents the distribution of radiation emitted by a perfectly black object at a given temperature. The curve shows the intensity of radiation emitted at different wavelengths, or colors, of light.

The shape of a blackbody spectrum is characterized by three main features: the peak wavelength, the total radiated power, and the overall shape of the curve.The peak wavelength of a blackbody spectrum depends on the temperature of the object emitting the radiation. As the temperature increases, the peak of the curve shifts towards shorter wavelengths, or higher energies. This means that hotter objects emit more radiation at shorter wavelengths, and the color of the emitted light changes from red to orange to yellow to white to blue as the temperature increases.The total radiated power of a blackbody spectrum also depends on the temperature of the object. The total power increases with temperature, as hotter objects emit more radiation at all wavelengths.The overall shape of the curve of a blackbody spectrum is described by Planck's law. This law states that the shape of the curve depends only on the temperature of the object and the physical constants of nature, such as the speed of light and the Planck constant. The curve has a characteristic bell shape, with a peak at a certain wavelength and a gradual decrease in intensity at longer and shorter wavelengths.

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Answer:

sorry I don't understand

Explanation:

please translate it in english

Answer:

Its either B or A

Explanation:

The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

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The acceleration of a body can be calculated using the following equation:

s = ut + ½at²

Where;

400 = 0 × 20 + ½ × a × 20²

400 = 0 + 200a

a = 2m/s²

Force acting on the truck can be calculated by multiplying the mass of the truck by its acceleration as follows:

Force = 7000kg × 2m/s²

Force = 14,000N

Therefore;

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The apple will fall in 0.00014 seconds

The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics. Kinematics equations are a set of equations that can derive an unknown aspect of a body’s motion if the other aspects are provided.

u = 5 m/h = 0.00139 m/s

using kinematic equation

v = u + at

v = final velocity = 0

g = acceleration due to gravity

t = time = ?

using

v = u - g*t

0 = 0.00139  - 9.8 t

t = 0.00139 / 9.8  = 0.00014 seconds

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Answer:

Acceleration =13.63m/s^2

initial velocity = v = 45

final velocity = u = 0

acceleration = v-u/t