how many kj of energy can be released by a doughnut containing 125 cal? a. 29,900 kj c. 29.9 kj b. 523,000 kj d. 523 kj

The forces necessary for calculating the total force are Fp and Fg. The correct option is d.

The force of attraction felt by a person at the center of a planet or Earth is called as the gravity.

The gravitational force, Fg is the attractive force exerted by the Earth on the object that is equal to the mass of the object times the gravitational acceleration.

Emmett is lifting a box vertically. There are only vertical forces acting on the box.

The vertical force must counteract the weight of the object, is the upward force applied on the object.

Thus, the forces necessary for calculating the total force is Fp - Fg.

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\( = \sf \frac{1}{2} m {v}^{2} \)

\( \sf = \frac{2.4J}{9.6J} \\ \sf= \frac{24}{96} = \frac{1}{4} \\ \sf = 1 : 4\)

Answer:

The kinetic energies of the bullets are 2.4 J and 9.6 J.

The bullet having greater velocity has more kinetic energy.

The ratio of their kinetic energies is 1 : 4.

Hope you could get an idea from here

Doubt clarification - use comment section.

The kinetic energy of the two bullets are 2.4 J and 9.6 J respectively.

The ratio of the kinetic energy of the bullets is 1:4.

The kinetic energy of an object is the energy possessed by the object due to its motion.

The kinetic energy of the two bullets is calculated as follows;

\(K.E_1 = \frac{1}{2} \times 0.003 \times 40^2 = 2.4 \ J\\\\K.E_2 = \frac{1}{2} \times 0.003 \times 80^2 = 9.6 \ J\)

Ratio of the kinetic energy of the bullets is calculated as follows;

\(K.E_1 : K.E_2 = 2.4: 9.6 \ = \ 1: 4\)

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Answer:

The nodes and anti nodes would reverse roles.

Explanation:

I believe it has to do with the path differences. If waves are in phase, then the path differences are such that the waves reach the screen with crests superimposing crests and troughs superimposing troughs. This happens when the periods of each wave are equal or the paths themselves differ by a whole number multiple of the wavelength (λ, 2λ, 3λ, ...).

Now make these waves out of phase. Then half of the waves will travel half a wavelength farther than the rest. So the path difference will be 0.5λ, 1.5λ, 2.5λ, ....

Answer: Budding is one of the methods of asexual reproduction in organisms.

Explanation:

The asexual reproduction is the process in which new organisms are produced from the parent organism without the formation of gametes. The budding is one of the methods of asexual reproduction in which from a mature organism a bud develops as an outgrowth. The bud obtains the nutrition from the parent organism and increase in size. On maturity the bud dissociate or detach from the parent organism and lives as separate individual organism. Budding can be seen in the case of Hydra, and Yeast.

Answer:

could and largejsjisj and we look like they can get to

Answer:

I would be 5 centimeters I think

There's a high-voltage pipe full of Neon.

That people try hard not to peon.

Some refrigerant guys

Say it would be wise

To replace all the Neon with Freon.

Answer:

The statements that describe the relationship between history and geography are:

Geography is the setting of the history's story.

Geography plays a role in historic events.

History affects geography, and geography influences history.

The second, third, and the fifth statements are the correct answers.

Longitudinal waves are those waves which move in the same direction as of the particle of the medium. That means, The Particles of the medium move forward and backward just like the Wave move forward so they propagate in the same direction.

The Sound wave is the example of the longitudinal wave as it propagates in  the same direction as the particle do.

Transverse wave are those waves which propagate in the perpendicular direction as of the particle of the medium. That means, The particle moves up and down but the wave propagate in forward direction. So they dont move in similar direction but perpendicular.

Water wave is the perfect example of the transverse wave as you can see that water particles form crest(Up the midline) and trough(down the midline) i.e. upward and downward movement but the water actually moves forward in direction.

The rare disorder that includes the inability to feel pain is called Congenital analgesia. That is option B.

Congenital analgesia is defined as ,the name implies, a genetic disorder that rarely occurs which makes one not to be able to feel pain.

It is an autosomal recessive disorder in which there is genetic changes in the PMRD12 gene.

Therefore, the rare disorder that includes the inability to feel pain is called Congenital analgesia.

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The experiment that measured the charge of the electron, allowing the determination of the electron's mass, was conducted by Robert A. Millikan.

Robert A. Millikan performed the famous oil drop experiment in 1909, which allowed for the direct measurement of the charge of an electron. In his experiment, Millikan observed tiny oil droplets suspended in a chamber and subjected them to an electric field. By carefully controlling the electric field and measuring the droplets' motion, he was able to determine the charge of each droplet. Millikan's experiment provided a precise value for the charge of the electron, which allowed the determination of the electron's mass when combined with earlier results on the charge-to-mass ratio of the electron. The charge-to-mass ratio had been previously determined by J.J. Thomson through his experiments with cathode rays. By combining Millikan's charge measurement with Thomson's ratio, scientists were able to calculate the mass of the electron, which played a crucial role in advancing our understanding of the atomic structure and the nature of electricity.

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Answer:

2.5N

Explanation:

since force is inversely proportional to square of the distance apart. that means the ratio of distance apart. so u have 12800×12800÷(6400××6400)=4/1

so the weight will be reduced to 1/4 of 10N

Answer:

2.9 Hrs

Explanation:

Time = Distance/velocity

6265  / 2150 ≈ 2.9 hrs

SWOT Analysis Strengths- Paley’s Products has a low overhead cost with the company operating at a high level of efficiency, resulting in competitive pricing.- They have a team of experienced employees who have worked in the industry for several years.- They have a variety of products in the portfolio that can satisfy customers from different sectors.- They are reputable and have a loyal customer base.Weaknesses- They have been slow to adopt new technology, and this may be a disadvantage to the company.- Limited marketing and sales promotion are affecting their sales revenue.-

They depend on a few key customers for the bulk of their sales revenue, leaving them vulnerable to market changes.Opportunities- Expansion of the product line to include unique products.- The establishment of strategic partnerships with other businesses in the industry.- Exploration of new markets, such as international markets.- Improvement of marketing techniques to increase brand awareness.Threats- Changes in consumer preferences towards environmentally friendly products.- Increase in competition from other businesses in the industry.- Fluctuating market prices for raw materials that may lead to price increases.

Strategic Actions to be taken by Paley Products1. Development of an E-commerce platform to allow online transactions with customers. The E-commerce platform will enable Paley to reach a wider customer base, expand its reach, and increase sales revenue.2. Investment in the research and development of new environmentally friendly products. Paley will remain competitive and cater to the needs of consumers who prefer green products.3. Establishment of strategic partnerships with other businesses in the industry to leverage the strength of other companies in the industry and to develop new products or increase market share.4. Improvement of marketing techniques to increase brand awareness and improve visibility. A marketing strategy that incorporates social media and other digital channels can help promote the brand to potential customers.5. Expansion into international markets. This will enable Paley to diversify its customer base and generate more revenue. Paley can start by targeting nearby countries, then expand globally as they gain more experience and financial stability.

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The meterstick must be moving at approximately: 0.816 times the speed of light, or approximately 2.45 x 10^8 m/s, for its length to be measured as 0.357 m due to the effects of length contraction.

According to Einstein's theory of special relativity, the length of an object appears to contract in the direction of its motion as its velocity approaches the speed of light.

The equation for this length contraction is given as L=L0√(1−v^2/c^2), where L is the contracted length, L0 is the original length, v is the velocity of the object, and c is the speed of light.

To determine the velocity required for a meterstick to be measured as having a length of 0.357 m, we can rearrange the length contraction equation to solve for
v: v=c√(1−(L/L0)^2).

Substituting the given values, we get
v=c√(1−(0.357/1)^2)=0.816c, where c is the speed of light.

However, it is important to note that this is an extremely high velocity and cannot be achieved by any macroscopic object in the universe. The theory of relativity is only applicable at speeds close to the speed of light and is not noticeable at everyday velocities.

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The vertical component of the velocity after the given interval of time will be:

B: -9.8 m/s

D: -19.6 m/s

F: -29.4 m/s

H: -39.2 m/s

A projectile can be described as any object upon which the only force is gravity. The projectile travels with a parabolic trajectory because of the influence of gravity. No horizontal forces are acting upon projectiles so there is no horizontal acceleration.

The horizontal velocity of a projectile is constant and the vertical acceleration is caused by gravity. The vertical component of the velocity of a projectile changes by 9.8 m/s each second while the horizontal motion of a projectile is independent of its vertical motion.

Given, the initial horizontal velocity, vₓ = 18 m/s

The initial vertical velocity, Vy = 0 m/s

The time interval = 1 sec

The vertical component of the velocity is calculated as;

\(V_y = V_{0y} -gt\)

\(V_y = 0- (9.8) (1)\\V_y = -9.8 m/s\)

The vertical component when t = 2 sec and horizontal velocity, Vx = 18 m/s

\(V_y = 0- (9.8) (2)\\V_y = -19.6 m/s\)

The vertical component of velocity when t = 3sec:

\(V_y = 0- (9.8) (3)\\V_y = -29.4 m/s\)

The vertical component of velocity when t = 4sec:

\(V_y = 0- (9.8) (4)\\V_y = -39.2 m/s\)

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Given :

Steve walks from his house 5 km South then turns east and walks 2 km. Then he walks 9 km North to his older sister's house. She gives him a ride to his friend Fred's house 2 km West.

To Find :

The total distance covered by Steve .

Solution :

We know , distance is the actual measurement space between two points .

Now , total distance travelled by Steve is the sum of all distance travelled .

\(T=5+2+9+2\\\\T=18\ km\)

So , total distance covered by Steve is 18 km .

Hence , this is the required solution .

The distance Steve traveled is mathematically given as

T=18Km

Question Parameters:

Steve walks from his house 5 km South then turns east and walks 2 km.

Then he walks 9 km North to his older sister's house.

Generally, the total distance has Steve traveled is mathematically given as

T=5+2+9+2

T=18Km

In conclusion, because the distance is the measure of space b/w two points the total distance traveled is

T=18Km

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Answer: A.

Explanation:

Solar eclipse happens when Sun casts a shadow directly on Earth and the Moon. Option A is correct.

A solar eclipse occurs when the Sun throws a shadow directly on Earth and the Moon.

When the Sun throws a shadow directly on the Earth and the Moon, it is called a solar eclipse.

Hence,option A is correct.

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Answer:

Argon is the third most abundant gas in our atmosphere, making up about one percent in terms of moles of gas.

Explanation:

Roughly, our atmosphere is 78% nitrogen, 21% oxygen, 1% argon, and trace amounts of many other gases plus variable amounts of water vapor.

The acceleration of the ball as it slides down the incline is (5/2)g sin θ. Correct answer is d.

The potential energy of the ball at the top of the incline is converted to kinetic energy at the bottom of the incline. Therefore, we can equate the potential energy at the top to the kinetic energy at the bottom:

mgh = (1/2)mv²

where m is the mass of the ball, g is the acceleration due to gravity, h is the height of the incline, and v is the velocity of the ball at the bottom of the incline.

We can rewrite the equation as:

v² = 2gh

The moment of inertia of the ball is (2/5)MR², where M is the mass of the ball and R is the radius of the ball. The torque acting on the ball as it rolls down the incline is due to the force of gravity acting on the center of mass of the ball. The moment of inertia and torque allow us to determine the angular acceleration of the ball.

τ = Iα

where τ is the torque, I is the moment of inertia, and α is the angular acceleration. The torque acting on the ball is given by:

τ = mgh sin θ

where θ is the angle of the incline.

Substituting the moment of inertia and torque into the equation for angular acceleration:

mgh sin θ = (2/5)MR² α

α = (5/2)g sin θ / R

The linear acceleration of the ball down the incline is equal to the product of the angular acceleration and the radius of the ball:

a = αR = (5/2)g sin θ

Therefore, the answer is (d).

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--The complete question is, A ball with (2/5)MR^2 is released from rest at the top of an incline of height, h at an angle θ. There is no friction between the ball and the surface of the incline. What is the acceleration of the ball as it slides down the incline?

a. g/2

b. g sinθ

c. 2g cos θ

d. (5/2)g sin θ

e. 0--

Answer:

1. Not a noun phrase

2. Noun phrase

3. Noun prase

4. Not a noun phrase

Explanation:

Answer: The initial velocity of the projectile is 3.1 km/s        

Explanation:

There is a problem with the question because we do not know in which direction the projectile travels 70 km.

I will assume that the projectile travels 70 km horizontally, as is the usual case.

I will also assume that 25 seconds after the projectile is fired, it hits the ground.

Suppose that the initial velocity of the projectile is V0, and this velocity V0 can be thought as the hypotenuse of a triangle rectangle, then the x-component and the y-component of the velocity will be the catheti of this triangle rectangle, then we can write:

Vy = V0*sin(25°)

Vx = V0*cos(25°).

Now, the vertical problem does not affect the horizontal one, so we can see only the horizontal case.

Here we don't have any force, then there is no acceleration, then the velocity is constant and it is equal to:

v(t) = V0*cos(25°)

For the horizontal position we can integrate over time to get:

p(t) = V0*cos(25°)*t + p0

where p0 is the initial position, and we can assume that it is equal to zero.

Then:

p(t) = V0*cos(25°)*t

Now we know that in t = 25s, the position is 70km

(because the projectile travelled 70km in 25 seconds) then:

p(25s) = 70km = V0*cos(25°)*25s

Now we can solve this for V0.

V0 = 70km/(cos(25°)*25s) = 3.1 km/s          

The initial velocity of the projectile is 3.1 km/s              

The thing you can get from this is that we can analyze the vertical problem and the horizontal problem separately (for example, here we only solved the horizontal case and we ignored the vertical one).

Primates rely primarily on vision to negotiate their environment.

As highly adaptable mammals, primates possess a keen sense of sight which enables them to successfully interact with their surroundings. This exceptional visual acuity is mainly due to their well-developed eyes, which allow for excellent color discrimination, depth perception, and the ability to see in low-light conditions.

Primates possess forward-facing eyes, a feature that contributes to the enhancement of their depth perception. This is crucial for tree-dwelling species that must accurately judge distances when jumping between branches or reaching for food. Additionally, the majority of primates have trichromatic vision, meaning they can see and differentiate a wide range of colors. This ability helps them identify ripe fruits and detect potential predators or threats.

Furthermore, primates have a larger brain size in comparison to other mammals, which aids in the processing of visual information. The visual cortex, the part of the brain responsible for processing visual data, is particularly well-developed in primates, enabling them to efficiently interpret and respond to their environment.

In summary, primates rely primarily on vision to navigate and adapt to their surroundings. Their advanced visual capabilities, such as enhanced depth perception, color discrimination, and low-light vision, coupled with a well-developed visual cortex, allow them to successfully interact with their environment and thrive in a variety of habitats.

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When the net force of opposite forces is zero, the forces are said to be balanced. A force is a physical phenomenon that refers to the push or pull on an object that can change its motion.

A force can accelerate or decelerate an object, and its unit of measurement is the Newton (N).If an object is being pushed or pulled in opposite directions with the same amount of force, the forces are balanced, and the object will remain still. If an object is being pushed or pulled in opposite directions with different amounts of force, the forces are unbalanced, and the object will move in the direction of the larger force.

When the forces acting on an object are equal in size but opposite in direction, they cancel each other out, and the net force is zero. The object will remain stationary since there is no force pushing or pulling it in any particular direction. Forces that have a net force of zero are known as balanced forces.

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Answer: Hello there

Explanation:

The colored part of the eye which helps regulate the amount of light entering the eye. When there is bright light, the iris closes the pupil to let in less light. And when there is low light, the iris opens up the pupil to let in more light. Focuses light rays onto the retina.

The surface area of the plates is 5.14 × \(10^{-10}\)  square meters.

The energy density (u) of a capacitor is given by:

u = (1/2) * ε * E^2

where ε is the permittivity of free space and E is the electric field between the plates of the capacitor.

The electric field is related to the voltage (V) across the capacitor and the distance (d) between the plates by:

E = V / d

The capacitance (C) of a parallel-plate capacitor is given by:

C = ε * A / d

where A is the surface area of each plate.

Using these equations, we can solve for the surface area of the plates:

First, we calculate the electric field:

E = V / d = (4.00 nC) / (ε * A / d) = (4.00 nC * d) / (ε * A)

Next, we can use the energy density equation to solve for ε:

u = (1/2) * ε * E^2

ε = 2 * u / E^2 = 2 * (3.62 × 10^-4 J/m^3) / [(4.00 nC * d / A)^2]

We can substitute this expression for ε into the capacitance equation:

C = ε * A / d = [2 * (3.62 × 10^-4 J/m^3) / [(4.00 nC * d / A)^2]] * A / d

Simplifying this expression, we get:

C = 2 * (3.62 × 10^-4 J/m^3) * A / [(4.00 nC)^2 * d^3]

Finally, we can solve for the surface area of the plates:

A = (C * (4.00 nC)^2 * d^3) / [2 * (3.62 × 10^-4 J/m^3)]

Substituting the given values, we get:

A = [(8.85 × 10^-12 F/m) * (4.00 × 10^-9 C)^2 * d^3] / [2 * (3.62 × 10^-4 J/m^3)]

A = 5.14 × \(10^{-10} m^2\)

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Answer:

Aluminium

Explanation:

If we calculate the heat transfer for all the substances, we have

Mc(∆T)

Where M is mass

C is heat capacity

∆T is temperature change.

For iron

Mc(∆T) = 500 ×0.440×100= 22000J

For copper

Mc(∆T) = 500 ×0.385×100= 19250J

For aluminium

Mc(∆T) = 500 ×0.897×100= 44850J

Aluminium has the highest heat capacity and would take longest for this heat capacity to be dissipated under similar condition.

Answer:

Acceleration is the rate of change of velocity.  If an object is changing its velocity, its speed, or changing its direction, then it is said to be accelerating.

Explanation:

when you change directions or speed up you are accelerating (or decelerating)  and when you change directions or speed its called velocity.