Object B has a mass of 10 kg and is moving at a velocity of 2.2 m/s. So object B’s momentum is ___ kg •m/s

The tension in the string is 48000 N.

The tension along the string is a constant and is equal to the strength of the forces exerted by the string's ends if there are no bends in the string, as there can be with vibrations or pulleys. These are the identical forces that the objects to which the string's ends are attached are applying to the ends of the string, according to Newton's third law.

V = v/2l is the fundamental frequency (n = 1). Higher frequencies are multiples of the fundamental frequency and are referred to as harmonics or overtones. The fundamental is commonly referred to as the first harmonic, followed by the second harmonic or first overtone at n = 2 and so on.

Length of the string = 0.25m

Mass of the string = 0.03 kg

Frequency = 400 Hz

L = \(\frac{1}{2} \lamda\) λ

λ = 2L

Here,

\(v = f \lambda\\\\v = f (2L)\)

Then,

\(v = \sqrt[]{} \frac{T}{\mu}\)

\(v^2 = \frac{T}{\mu}\)

\(T = v^2\mu\)

\(T = (f2L)^2\frac{m}{L\\}\\ \\T = f^24Lm\\\\T = (400)^2*4*0.25*0.30\\\\ T = 48000 N\)

Therefore, the tension in the string is 48000 N.

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The stopping potential is \(0.508 \ V\).

According to the question:

\(work\ function(\phi) = 2.8\ eV\)

\(frequency(f) = 8.0\times 10^{14}\ Hz\)

and we also know that \(planck's\ constant(h) = 4.1357 \times 10^{-15}\ eV-s\)

To find,

\(stopping\ potential(V_o)\)

According to photoelectric effect:

\(K_{max} = hf - \phi\)

\(K_{max} =\) maximum kinetic energy of electrons ejected in the photoelectric effect.

Using this equation and the given values we get:\(K_{max} = 4.1357\times 10^{-15}\times 8.0\times 10^{14} - 2.8\ eV\)
\(K_{max} = 3.308 - 2.8 = 0.508\ eV\)

The maximum kinetic energy of the electrons in terms of \(eV\)(electron-volts) is equal to the stopping potential for those electrons.

Therefore, the stopping potential \(V_o = 0.508\ eV\).

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Skaters can modify their mass distribution while keeping their center of mass at a constant distance from the axis of rotation during a spin maneuver, without changing their angular velocity.

If the pair of figure skaters want to make a change that results in no change to their angular velocity, they could change the distribution of their masses while maintaining their center of mass at the same distance from the axis of rotation. For example, they could stretch their arms outward, move their legs closer together, or tilt their bodies slightly, all while keeping their center of mass at the same distance from the axis of rotation through the left foot of the skater on the left. By doing so, the moment of inertia of the system would change, but the angular velocity would remain the same.

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The net force acting on the book is 7N right.

The net force is defined as the total of all forces exerted on an object. Net force is essential since it aids in describing the motion of an item and can be used to calculate acceleration. The first law of motion of Isaac Newton states that an object in motion will remain in motion and an object at rest will remain at rest unless acted upon by a net force that is imbalanced. This indicates that knowing the net force acting on an object will aid in predicting its velocity.

In this case, we are given that:

Force F1 = 10 N pulling to the right

Force F2 = 3 N pulling to the left

Let's assume the right is positive and the left is negative.

To calculate the net force, we can use this following formula:

Fnet = F1 + F2

Fnet = 10 + (-3)

Fnet = 7

As the result, the net force would be 7 N.

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Newton's third law states that if an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.

Let:

A = Hammer

B = Nail

so:

Therefore:

The hammer exerts a force on the nail; the nail exerts a force on the hammer.

Answer:

Work Definition in Chemistry

Work Definition . Work is the energy required to move an object against a force. ...

Mechanical Work . Mechanical work is the type of work most commonly dealt with in physicsand chemistry. ...

PV Work . Another common type of work is pressure-volume work. ...

Sign Convention for Work . Work performed by the system on the surroundings has a negativesign. ...

Explanation:

The velocity of the cart after 10 baseballs have been thrown at it is 5.075 m/s.

To solve this problem, apply the principle of conservation of momentum.

The initial momentum of the cart is zero since it is at rest, and the final momentum is determined by the momentum of the baseballs caught by the sail.

Since the cart catches the baseballs, the momentum of each baseball is transferred to the cart.

Given:

Mass of the cart, m_cart = 10 kg

Mass of each baseball, m_baseball = 145 grams = 0.145 kg

Velocity of each baseball, v_baseball = 35 m/s

Number of baseballs caught, n = 10

The total momentum of the system after the baseballs are caught is the sum of the momenta of the individual baseballs:

Total momentum = (mass of first baseball × velocity of first baseball) + (mass of second baseball × velocity of second baseball) + ...

Total momentum = (m_baseball × v_baseball) + (m_baseball × v_baseball) + ... (for n baseballs)

Substituting the given values:

Total momentum = (0.145 kg × 35 m/s) + (0.145 kg × 35 m/s) + ... (for 10 baseballs)

Total momentum = 10 × (0.145 kg × 35 m/s)

Now, calculate the velocity of the cart using the total momentum and the mass of the cart:

Total momentum = m_cart × v_cart

v_cart = Total momentum / m_cart

v_cart = (10 × 0.145 kg × 35 m/s) / 10 kg

v_cart = 5.075 m/s

Therefore, the velocity of the cart after 10 baseballs have been thrown at it is 5.075 m/s.

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The painter can walk up to 0.69 m from the right bar before the plank starts to fall.  It is important to note that this assumes that painter and bucket remain stationary.

The weight of the bucket creates a clockwise torque around  left bar, while the weight of painter creates a counterclockwise torque around the right bar. For plank to remain in equilibrium, these torques must balance each other out.

We can use the principle of moments to calculate the distance d from the right bar that the painter can walk before the plank starts to fall. The formula for the principle of moments is:

Torque around left bar = Torque around right bar

\(51 kg * 9.8 m/s^2 * (29 m - d) = 75 kg * 9.8 m/s^2 * d\)

Solving for d gives:

d = 0.69 m

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1. After being rubbed against rabbit hair, a piece of glass can acquire an electric charge.

2. Benjamin Franklin found that electric forces were caused by the transfer of electric charge between objects.

3. The mathematical relation between charge and force was elaborated by Charles-Augustin de Coulomb.

4. Electricity can be found in various sources, including power plants, batteries, lightning, and natural phenomena.

5. Charges on a charged insulator tend to stay in place and do not move freely like in conductors.

6. An ion is an atom or molecule that has gained or lost electrons, resulting in a positive or negative charge.

7. Electrical conductivity is a common property of all metals, allowing them to easily transmit electric current.

8. Metals are good conductors because they have a high number of free electrons that can move easily through the material.

9. Electric charges in thunderstorms are created through the separation of positive and negative charges within clouds.

10. Around 1880, enormous generators of charge were replaced by more efficient and compact electrical generators.

1. When glass is rubbed against rabbit hair, the rubbing action transfers electrons between the two materials. This can result in the glass acquiring an electric charge, either positive or negative, depending on the direction of electron transfer.

2. Benjamin Franklin conducted experiments with electricity and proposed that electric forces were caused by the transfer of electric charge. His famous experiment with a kite and a key during a thunderstorm led him to understand that lightning was a form of electrical discharge.

3. Charles-Augustin de Coulomb, a French physicist, elaborated the mathematical relation between charge and force. He formulated Coulomb's law, which describes the force between charged particles and is analogous to Newton's law of universal gravitation.

4. Electricity can be generated and found in various sources. Power plants produce electricity through the conversion of energy from sources such as coal, natural gas, or nuclear reactions. Batteries store and release electrical energy. Lightning is a natural occurrence that produces electricity through the discharge of atmospheric charges.

5. When a material is charged, the charges tend to stay on the surface or within the material itself. In the case of an insulator, which does not conduct electricity well, the charges remain localized and do not flow freely.

6. An ion is an atom or molecule that has gained or lost electrons, resulting in an imbalance of positive or negative charge. This imbalance makes ions either positively charged (cation) or negatively charged (anion).

7. Electrical conductivity is a fundamental property of metals. Metals have a large number of free electrons that are loosely bound to the atomic structure. These free electrons can move easily through the material, allowing for the efficient flow of electric current.

8. Metals are good conductors due to their atomic structure and the presence of free electrons. The metallic bond holds the atoms together in a lattice, while the delocalized electrons are not strongly associated with any particular atom. This allows the free electrons to move easily through the material, facilitating the flow of electric current.

9. Thunderstorms involve the separation of positive and negative charges within clouds. The upward movement of ice particles and the downward movement of raindrops cause a separation of charges, with positive charges accumulating at the top and negative charges at the bottom. This separation creates an electric field and, ultimately, leads to the discharge of lightning.

10. Around 1880, enormous generators of charge, such as friction machines and static electricity generators, were replaced by more efficient and compact electrical generators. These generators, based on electromagnetic principles, allowed for the generation of electric current through the rotation of coils within a magnetic field.

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Answer:

D. How much each data point differs, on average, from the mean value of the set

Explanation:

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

The velocity of the jet is calculated to be 900 miles/hr when the relation between velocities of both propeller and the jet is given.

The distance travelled by a propeller plane and a jet = 3000 miles

Velocity of the plane Vp = 1/3 Velocity of the jet Vj

Vp = 1/3 Vj

Vj = 3 Vp ----(1)

Time taken by the propeller plane to complete the trip = 10 hours

Velocity of the propeller plane = Distance of the propeller plane/Time

⇒ 3000/10 = 300 miles/hr

The velocity of the jet = 3 times the velocity of the propeller plane

⇒ 3 × 300 miles/hr = 900 miles/hr

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Answer:

D. The rock cycle takes too long to be able to observe it in entirety.

Explanation: is answer

The downtown is 5 miles far away, if the car travels at 10 miles / hour for 0.5 hours.

v = d / t

v = Velocity

d = Distance

t = Time

v = 10 mi / hr

t = 0.5 hr

d = v * t

d = 10 * 0.5

d = 5 mi

Velocity of the car is the rate of change of position of the car. In simple words it can be said as velocity is used to calculate the distance covered in a given amount of time.

Therefore, the downtown is 5 miles far.

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The gravitational force exerted by one peach on the other can be calculated using the formula F = G(m1m2)/r²,

where F is the force, G is the gravitational constant (6.67 x 10^-11 Nm²/kg²), m1 and m2 are the masses of the two peaches, and r is the distance between their centers of mass.

(a) When the separation between the peaches is 0.25 m, the force exerted by one peach on the other is:

F = (6.67 x 10⁻¹¹ N×m²/kg²) × (0.16 kg × 0.16 kg) / (0.25 m)² = 1.07 x 10⁻⁹N

(b) When the separation between the peaches is 0.50 m, the force exerted by one peach on the other is:

F = (6.67 x 10^-11 N×m²/kg²) ×(0.16 kg × 0.16 kg) / (0.50 m)²= 2.67 x 10⁻¹⁰ N

Therefore, the gravitational force exerted by one peach on the other decreases as the distance between them increases. This is because the force of gravity is an inverse square law, meaning that the force decreases proportionally to the square of the distance between the objects.

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Answer:

B

Explanation:

F = ma

500N = 200 × a

200a. = 500N

a. =. 500N/200

a. =. 2.5m/s²

PLEASE GIVE BRAINLIEST.

Answer:

B

Explanation:

F = ma

500N = 200 × a

200a. = 500N

a. =. 500N/200

a. =. 2.5m/s²

Hope this helps

Answer:

40

Explanation:

Answer:

np 500000 eeeeeeeeeeee

Explanation:

346 763 999 eeeeeeeeeeeee

The Second Law of Thermodynamics tells us that the amount of available energy in the universe is constantly decreasing.

The Second Law of Thermodynamics is based on the idea of entropy, which is a measure of the amount of disorder or randomness in a system. It states that in any natural process, the total amount of entropy in a system and its surroundings always increases. This means that energy can never be completely converted into work, and that some energy will always be lost as heat. This also means that the amount of available energy in the universe is constantly decreasing, and that eventually all of the energy in the universe will be evenly distributed, resulting in a state of maximum entropy. The Second Law of Thermodynamics has important implications for the study of heat and energy, and for our understanding of the universe as a whole. The rule of nature which tells us that the amount of available energy in the universe is constantly decreasing is the Second Law of Thermodynamics.

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The potential energy of the hiker at the first hut is mathematically given as

v = 548800J

Generally, the equation for potential energy is mathematically given as

v = mgh

where,

m = 80kg, g = 9.8, h = 700

therefore

v = 80 x 9.8 x 700

In conclusion, the potential energy of the hiker at the first hut

v = 548800J

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Work done by the gravity is -1662.28 Joules.

Given that:

m = 90 kg      M = 0.1

Q= 52°          S =  30m

a) work done by friction

w = fs

w = mkns

W = - Mk mg cos∅

W = - 0.1X 90 X 10 X cos 52° x30

w =  2700 X 0.61566

Wf = -1662.286 Joules

b) work done by Tention

W = -TS

W = mg sin∅ x s

W = -90x10xsin 52° x 30

W = -2700 X 0.788

W = -21276.3 Joules

c) work done by gravity

w = mg sing∅xs

wg = 21276.3Joules

d) Total work done

W= -1662-28 - 21276·3 +21276-3 -

W= -1662.28 Joules

Forces have no effect in the vertical direction. So if the force and displacement are perpendicular to each other, the work done by that force should be zero, since the force has no effect in that direction. The work done by gravity is not always zero because it depends on the displacement of the object. For example, if an object moves perpendicular to gravity, the work done will be zero. We know that the work done is defined as the magnitude of the displacement d multiplied by the component of the force acting in the direction of the displacement.

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The problem is that at the end, you owe $480, so what you have is -$480 (instead of the $480 that is written on the riddle). And when your friend gives back the $30, you will owe $450, meaning that you have

-$450.

Let's follow what you say with the proper equations.

Both your parents gave you $250, so now you have:

$250 + $250 = $500

Then you bought a phone for $450, so now you have:

$500 - $450 = $50

Then you gave $30 to your friend, so now you have:

$50 - $30 = $20

Then you gave $10 to each one of your parents, so now you have:

$20 - $10 - $10 = $0.

Now, each one of your parents wants the $240 ($250 - $10) back.

So you OWE $480 (you do not have $480, you owe it, here is the problem with the riddle reasoning).

It will be represented with a negative number:

-$480

When your friend gives you the $30 back, you add it to the above value (meaning that you give it to your parents):

-$480 + $30 = -$450

Now you owe $450 to your parents, which is the cost of the cellphone that you bought.

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The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.

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The actual velocity of the geostrophic wind is 1.06 m/s, and it is blowing from the west-northwest (opposite to the direction of the pressure gradient).

To determine the geostrophic wind, we need to use the geostrophic wind equation:

f(v x k) = -(1/ρ)∂p/∂x * i + (1/ρ)∂p/∂y * j

where f is the Coriolis parameter, v is the geostrophic wind, k is the vertical unit vector, ρ is the air density, and i and j are the horizontal unit vectors in the x and y directions, respectively.

At 31°N, the Coriolis parameter is approximately 1.02 × 10^(-4) s^(-1) and the air density is approximately 1.2 kg/m^3.

Assuming that the pressure gradient decreases by 1.5 kPa/100 km toward the northeast, we have:

∂p/∂x = -1.5 Pa/m

∂p/∂y = 0

Substituting these values into the geostrophic wind equation, we get:

f(v x k) = 1.25 × 10^(-6) * (-v) * i

where v is the magnitude of the geostrophic wind and i is the horizontal unit vector in the x direction.

Since the geostrophic wind is perpendicular to the pressure gradient, it blows parallel to the isobars, from high pressure to low pressure. In this case, the pressure gradient decreases toward the northeast, so thegeostrophic wind blows toward the east-southeast.

To find the magnitude of the geostrophic wind, we can take the cross product of both sides of the equation with k:

v = -f/(ρ) * (i x k)

Since i x k = j, we have:

v = -1.06 m/s * j

Therefore, the components of the geostrophic wind are:

ug = 0 m/s (since the pressure gradient does not vary in the y direction)

vg = -1.06 m/s

The geostrophic wind's real speed is 1.06 m/s, and it is coming from the west-northwest (opposite to the direction of the pressure gradient).

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The given statement " Linux mostly uses atomic integers to manage race conditions within the kernel" is true because Atomic operations are commonly used in Linux to manage race conditions within the kernel.

Atomic operations are guaranteed to be indivisible, which means they cannot be interrupted by other threads or processes. This prevents race situations, which occur when two or more threads or processes access the same shared resource at the same moment and create unexpected behaviour.

Atomic integers are a form of atomic operation that is extensively used in Linux to manage shared resources like counters and flags. When many threads or processes access an atomic integer, the atomic operation assures that the integer's value is changed in a way that prevents race situations.

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Answer:

7 Seconds

Explanation:

P=W/t

t=W/P

t=875,000/125,000

t=7 seconds

F=ma

Newton's second law states that force is proportional to what is required for an object of constant mass to change its velocity. This is equal to that object's mass multiplied by its acceleration. We use Newtons, kilograms, and meters per second squared as our default units, although any appropriate units for mass (grams, ounces, etc.) or velocity (miles per hour per second, millimeters per second2, etc.) could certainly be used as well - the calculation is the same regardless.

The statements which are correct about calculating LaToya's mechanical advantage are—The input force is 50 N, the output force is 450 N and the mechanical advantage is 10.Therefore, the correct option is A, D and E.

Mechanical advantage is the ratio of output force to input force. In this case, LaToya is using a force of 50 N to pull a cart that weighs 500 N. The output force is the weight of the cart minus the force LaToya exerts on it:

Output force = 500 N- 50 N = 450 N

To see why statement F is incorrect, note that the formula for mechanical advantage is:

Mechanical advantage = output force / input force

Substituting the values we found earlier, we get:

Mechanical advantage = 450 N / 50 N = 9

So the mechanical advantage is actually 9, not 100.

Therefore, the correct option is A, D and E.

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Power frequency interference in ECG recording can be caused by a variety of external sources. It can be generated by electrical motors, transformers, spark gaps, electrical wiring, and fluorescent lights typically found in clinical settings.  

The limitations of a sphygmomanometer is inaccuracy and use error.

Power frequency interference is also created by electric utilities, such as electrical lines, generating stations, and telecommunication systems. Even defibrillators and pacemakers can generate power frequency interference, if not properly shielded. The sphygmomanometer is primarily used to measure a patient’s blood pressure, which is an indication of the force of the circulating blood against the walls of the arteries.

This device utilizes an inflatable cuff and a manometer, or pressure gauge, to measure the patient’s systolic and diastolic blood pressures. The accuracy of the sphygmomanometer readings is dependent on the skill and experience of the user, as incorrect cuff size and improper inflation and deflation techniques will produce inaccurate results.

In addition to this, sudden changes in a person’s blood pressure or movement can also cause inaccurate readings. Lastly, sphygmomanometers cannot detect changes in blood viscosity, and will not provide readings for arterial-venous evaluations.

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Answer: F = 131.7N

Explanation:

You are given the following parameters.

Mass M = 30 kg

Coefficient of static friction μ = 0.5

Ø = 30 degrees

When the person is trying to drag the box with force F, the static frictional force Fs will be acting in the opposite direction.

From the figure attached, resolve all forces into horizontal component and vertical component.

Horizontal component:

Fs - F cosØ = 0

Fs = F cosØ

F cosØ = μN ...... (1)

Vertical component:

N + F SinØ - mg = 0

N = Mg - F SinØ ..... (2)

Substitutes m, g and Ø into the equation 2

N = (30 × 9.8) - F × sin30

N = 294 - 0.5F

Substitute N and coefficient of friction into the equation (1)

F cos30 = 0.5 (294 - 0.5F)

Open the bracket

0.8660F = 147 - 0.25F

Collect the like terms

1.116025F = 147

F = 147/1.116025

F = 131.7 N

Therefore, the minimum force the person needs to have to move the box along the floor is 131.7 N

Elasticity is of significant importance in the everyday lives of businesses and consumers as it helps them understand and respond to changes in prices and demand for goods or services. By considering elasticity, businesses can make informed decisions regarding pricing strategies, production levels, and resource allocation. Consumers, on the other hand, can assess the impact of price changes on their purchasing decisions and adjust their consumption patterns accordingly.

Elasticity, specifically price elasticity of demand, measures the responsiveness of consumer demand to changes in price. It indicates the percentage change in quantity demanded resulting from a one percent change in price. Understanding price elasticity allows businesses to determine how sensitive consumers are to changes in price and adjust their pricing strategies accordingly.

For example, let's consider the market for gasoline. Gasoline is a highly price-sensitive good, meaning that changes in its price have a significant impact on consumer demand. If the price of gasoline increases, consumers may reduce their consumption and seek alternatives such as carpooling or using public transportation. In this scenario, businesses need to consider the price elasticity of gasoline to predict and respond to changes in consumer behavior. They might lower prices to stimulate demand or introduce more fuel-efficient options to cater to price-conscious consumers.

In conclusion, elasticity matters because it provides valuable insights into the dynamics of supply and demand, enabling businesses and consumers to make informed decisions in response to price changes. By understanding elasticity, businesses can adapt their strategies to maintain competitiveness, while consumers can optimize their purchasing choices based on price sensitivity.

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