A moving body must undergo a change of

Friction is the force that acts on the opposite side of direction of force, thus it manages to decelerate an object, so it acts upward along the plane

At 900 rpm, a fan spins. angular speed of the any point on a fan blade and tangential speed of a blade's tip if there is a 20 cm gap between the centre and the tip. 9.4 rads and 18.8 m/s.

Correct option is, C.

A amount or angle rotated (and angular displacement) by a rotating body in a given length of time is known as the angular velocity of the body. The symbol for it is omega (). The formula for angular velocity is rad/s = dtd. Radian per second serves as its SI unit.

The product of a moment of inertia (I) as well as the angular velocity () of the an object in rotation is the angular momentum. A vector quantity is angular momentum. Kg. m2 is the SI unit for angular momentum.

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we get the distance traveled by the proton as,distance traveled = vt = vp(t)distance traveled = (vp(2d/vp)) = (2d(vp/√(2qVp/m)))Thus, by the time the electron strikes the positive plate, the proton would have traveled 1.13 cm.

Given that the plate separation of a charged capacitor is 0.8 m. A proton and an electron are released from rest at the midpoint between the plates.The acceleration experienced by each particle is given as, a = F/mwhere m is the mass of the particle and F is the force experienced by the particle. The force experienced by each particle is given as F = qEwhere q is the charge of the particle and E is the electric field experienced by the particle.The electric field between the plates of the capacitor is given by

E = V/d, where V is the potential difference across the plates and d is the distance between the plates.The potential difference across the plates is given as V = Ed = (Vf - Vi)

where Vf is the final potential of the positive plate, Vi is the initial potential of the negative plate.Substituting the value of electric field,

we get V = Ed = (Vf - Vi)By the law of conservation of energy, the kinetic energy gained by the electron is equal to the potential energy lost by the capacitor.

Kinetic energy gained by electron = 1/2 mv² = qVqV = 1/2 mv²The potential energy lost by the capacitor = 1/2 CV² = qVqV = 1/2 CV²qV = 1/2 mv² ⇒ v = √(2qV/m)

By the time the electron strikes the positive plate, the time taken = t = (2d/v)where d is the plate separationSubstituting the values, we get the time taken as,t = (2d/v) = (2 × 0.8)/ √(2qV/m)

Similarly, the time taken by the proton is given by,t = (2d/vp)where vp is the velocity of the protonvp = √(2qVp/m)The distance traveled by the proton by the time the electron strikes the positive plate is given by,

distance traveled = vt = vp(t)

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Answer:

Momentum = 2qEx/v

Explanation:

From the work - energy theorem, we know that;

Kinetic energy = work done

Now, formula for both are;

Kinetic energy = ½mv²

Work done = qEx

Where;

m is mass

v is velocity

q is charge

E is Electric field

x is distance covered.

Thus;

½mv² = qEx - - - - (eq 1)

Now, momentum formula is;

p = mv

Let's rewrite the left hand side of equation 1 to reflect p = mv. Thus;

½v(mv) = qEx

½vp = qEx

p = 2qEx/v

The centripetal acceleration at the top of the test tube in the centrifuge is approximately 2,743 m/s².

Centripetal acceleration refers to the acceleration experienced by an object moving in a circular path, directed towards the center of the circle. To calculate the centripetal acceleration at the top of the test tube in the centrifuge, we can use the formula:

Centripetal acceleration = (Linear speed)^2 / Radius

Given that the linear speed is 77.5 m/s and the top of the test tube is 4.26 cm (or 0.0426 m) from the axis of rotation, we can substitute these values into the formula:

Centripetal acceleration = (77.5 m/s)^2 / 0.0426 m

Simplifying the calculation, we get:

Centripetal acceleration ≈ 2,743 m/s²

This means that at the top of the test tube, the centripetal acceleration is approximately 2,743 m/s², indicating the rate at which the velocity of the test tube is changing as it moves in a circular path.

It's important to note that centripetal acceleration depends on the linear speed and the distance from the axis of rotation. Increasing the linear speed or decreasing the distance from the axis will result in a higher centripetal acceleration.

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Answer:

First, I would want to find what started the fire and why that's what caused it.

Second, I would take pictures of the area where the fire started if found.

Third, I would interview the witnesses.

Fourth, I would document the scene and write down everything that I see and what the people seen/heard happen.

Fifth, They need to do a full scene investigation.

Sixth, They need to do a follow up investigation.  

Who do you think bombed Bill’s house, and why? (one to two sentences) I think Bill bombed his own house because he did not want to be caught. He most likely bombed his house with all his belongings so that he couldn't be traced.

What other types of explosion or fire evidence might you look for within the blast radius? (two to three sentences) Within the blast radius I would search for chemical residue. I would try to find Bill as soon as possible to match the chemical residue on his clothes if there is any.

Does this incident change your theory on Dr. Fisher’s murder? Explain. (three to five sentences) As sad as it is I believe that Dr. Fisher was murdered by his own patient Bill since they had a very hostile relationship. The incident of Bill’s house bombing doesn’t change my theory on Dr. Fisher’s murder, in fact, it further consolidates my theory of Bill being the murderer since Bill wanted to get rid of the evidence so that’s why he bombed his own house.

Explanation:

Randall is correct in stating that the force on the string has a magnitude equal to the product of the charges, q, divided by the square of the length of the string, L.

This is described by Coulomb's Law, which relates the force between two charged objects to the product of their charges and the inverse square of the distance between them. On the other hand, Tilden's statement about the tension in the string being equal to the product of the charges is incorrect.

Tension in the string is not directly related to the charges but is instead a result of the forces exerted by the charged spheres on the string itself.

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When conducting a hypothesis test there are two possible decisions  that you can make: reject the null hypothesis or fail to reject the null hypothesis.

A statistical hypothesis test is a method of statistical inference used to decide whether the data at hand sufficiently support a particular hypothesis. Hypothesis testing allows us to make probabilistic statements about population parameters.

When conducting a hypothesis test there are two possible decisions: reject the null hypothesis or fail to reject the null hypothesis. You should remember though, hypothesis testing uses data from a sample to make an inference about a population. When conducting a hypothesis test we do not know the population parameters. In most cases, we don't know if our inference is correct or incorrect.

When we reject the null hypothesis there are two possibilities. There could really be a difference in the population, in which case we made a correct decision. Or, it is possible that there is not a difference in the population (i.e.,  is true) but our sample was different from the hypothesized value due to random sampling variation. In that case we made an error. This is known as a Type I error.

When we fail to reject the null hypothesis there are also two possibilities. If the null hypothesis is really true, and there is not a difference in the population, then we made the correct decision. If there is a difference in the population, and we failed to reject it, then we made a Type II error.

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Sound waves are produced when something is caused to vibrate.

This can be defined as the pattern of disturbance caused by the movement of energy traveling through a medium.

Sound is produced when a substance vibrates leading to movement in surrounding air molecules.

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The correct option is A, the stick's angular momentum is measured at a magnitude of  \(0.0394\:kg . m^2/s\).

In this case I is given as;

\(I = 1/12\:(m*L^2)\\I = 1/12\:( 0.135 * 1^2)\\I = 0.01125\:kg\:m^2\\\)

Following that, the angular momentum may be computed as

\(M = 0.01125\:kg\:m^2*3.50\:rads/s\\M = 0.039375\:kg\:m^2/s\\M = 0.0394\:kg\:m^2/s\)

The rotating motion of an object around an axis is described by the fundamental idea of angular momentum in physics. It is a vector quantity that is affected by the mass, velocity, and separation from the axis of rotation of the object. The ratio of an object's moment of inertia to its angular velocity determines how much angular momentum it has.

An object's angular momentum measures how much it rotates and how challenging it is to halt that revolution. The angular momentum of an object increases with its moment of inertia and angular velocity. Since angular momentum is conserved in isolated systems, a system's overall angular momentum stays constant until it is affected by an outside torque.

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Complete Question:-

A uniform 135-g meter stick rotates about an axis perpendicular to the stick passing through its center with an angular speed of 3.50 rad/s. What is the magnitude of the angular momentum of the stick?

A) 0.0394 kg · m^2/s

B) 0.473 kg · m^2/s

C) 0.0739 kg · m^2/s

D) 0.158 kg · m^2/s

E) 0.0236 kg · m^2/s

i. The gravitational force between the earth and sun can be obtained as follow:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.987×10²⁴ × 1.989×10³⁰) / (1.5×10¹¹)²

F = 3.53×10²² N

Thus, the gravitational force between the earth and sun is 3.53×10²² N

ii. The gravitational force between the earth and moon can be obtained as follow:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.987×10²⁴ × 7.347×10²²) / (3.844×10⁸)²

F = 1.99×10²⁰ N

Thus, the gravitational force between the earth and moon is 1.99×10²⁰ N

Comparison = G₁ / G₂

G₁ / G₂ = 3.53×10²² / 1.99×10²⁰

G₁ / G₂ = 177

Cross multiply

G₁ = G₂ × 177

Thus, we can say that the gravitational force between the earth and sun is 177 times bigger than the gravitational force between the earth and moon

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Answer:

it is certainly a as clearly a has the greater mass

In the given situation, the ships are sighted due west from a height of 50 meters above sea level on a cliff. The angles of depression are 61°  and 28° . The two ships are approximately 56.38 meters apart.

Let AB and CD be the two ships, and let E be the point on the cliff where they are sighted. Then, we have:

From E, draw lines perpendicular to AB and CD, meeting them at points F and G, respectively.

Also, let the distance between the two ships be x meters.

Using the trigonometric ratios for the right-angled triangles EFB and EGC, we can write:

tan 28° = BF/EB and tan 61° = CG/EG

Multiplying the two equations, we get:

tan 28° × tan 61° = BF/EB × CG/EG

Substituting the values, we get:

(0.531) x = BF/EB × CG/EG

Thus, the distance between the two ships is given by:

x = 50/(BF/EB × CG/EG)

Therefore, we need to find the values of BF/EB and CG/EG.

Using the trigonometric ratios, we can write:

BF/EB = tan 61° and CG/EG = tan 28°

Substituting the values, we get:

BF/EB = 1.969 and CG/EG = 0.531

Therefore, the distance between the two ships is:

x = 50/(BF/EB × CG/EG)

x = 50/(1.969 × 0.531)

x = 56.38 meters (approximately)

Thus, the two ships are approximately 56.38 meters apart.

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Explanation:

using Ohm's law which is defined as V=IR

where V is the voltage, I is the current and R the resistance

Answer: Convection

Explantion: Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection

Answer: 4.9 m/s

Explanation:

To make the bell ring silently, the length of the clapper rod, denoted as l, should be adjusted to match the period of oscillation for the bell. The answer will provide an explanation of how to determine the appropriate length.

The period of oscillation for a simple pendulum, such as the bell, is given by T = 2π√(l/g), where T represents the period, l is the length of the pendulum, and g is the acceleration due to gravity.

To make the bell ring silently, the period of oscillation for the clapper should match the period of the bell. Therefore, we need to adjust the length of the clapper rod to achieve this.

By setting the periods equal to each other, we have T_clapper = T_bell, which implies 2π√(l_clapper/g) = 2π√(l_bell/g).

Simplifying the equation, we get √(l_clapper) = √(l_bell).

To make the bell ring silently, the length of the clapper rod, l_clapper, should be equal to the square of the length of the bell, l_bell. Therefore, to achieve a silent ringing of the bell, the length of the clapper rod should be adjusted to match the square of the length of the bell.

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Answer:

B. solar energy → electric energy → light and heat energy

Explanation:

The solar energy received from the solar rays is transformed into electrical energy, through a photovoltaic process that is part of the solar panel and other elements. Then the electric energy generates currents that pass through the electrical circuit and this transformation generates light in electric bulbs. Since energy conversion processes are never 100% efficient for the electric energy in the bulb is transformed into heat, for that reason the electric bulb emits part of its energy in the form of light and heat.

Answer:

The Sun derives all its energy from a fusion cycle. In that process, tiny hydrogen molecules combine into a continuous proton-proton chain to create larger helium nuclei. The above figure illustrates the fusion of hydrogen into helium.

Explanation:

Hope this helps.

Answer:

nuclear fusion

Explanation:

In this process, small hydrogen molecules fuse together to form bigger helium nuclei in a continuous proton-proton chain.

Answer:

a)  3.0  10⁴ m / s, b) 3.7 10¹ m, c) 0.750 kg, d) 4 10¹² m²,  e)  75 m, f) 60 m²

g) 5.207 10³ m², e) 4.847 10⁷ s

Explanation:

The international system (SI) of measurements has as fundamental units the meter for length, the second for time and kilogram for mass.

Let's reduce the different magnitudes to the SI system

a) 30 km / h (1000m / 1 km) (1 h / 3600 s) = 3.0 10⁴ m / s

b) 37 Dm (10 m / 1 Dm) = 3.7 10¹ m

c) 750 g (1 kg / 10,000 g) = 0.750 kg

d) 4 10⁶ km² (1000 m / 1km) ² = 4 10¹² m²

e) 7500 cm (1 m / 100 cm) = 75 m

f) 600000 cm² (1m / 10² cm) ² = 60 m²

g) 520700000 mm³ (1 m / 10³ mm) ³ = 5.20700000 109/10 ^ 6

  = 5.207 10³ m²

e) 3.4 years (l65 days / 1 yr) (24 h / 1 day) (3600 s / 1h) = 4.847 10⁷ s

The acceleration of the sled down the frictionless hill is found to be hill is 4.9 m/s².

In order to find the acceleration of the sled going down the hill can be found using this formula,

a = gsin(A), where, g is the gravity, A is the angle that the sled make with horizontal and a is the acceleration.

Plugging in the values, we get,

a = 9.8sin(28.0)

a = 4.9 m/s²

Since the hill is frictionless, there is no force opposing the motion of the sled from the rest, so the acceleration is solely due to gravity. So, the acceleration of the sled is 4.9 m/s²..

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A mass of 2 kg has a surface velocity of 4 m/s. V = √(F/D) The speed maximum formula uses the mass or drag coefficient. If object the ground after 9.9 seconds, its velocity becomes (1.01 s)*(9.8 m/s2), or 9.9 m/s.

Speed is not directly impacted by mass. It establishes how quickly any object can increase its speed (accelerate) in response to a specific force. Lighter objects change their speed by the a given quantity with a given force in a shorter amount of time.

The momentum calculator uses the equation p=mv, which stands for momentum (p) equal masses (m) equal velocity (v). The calculator can calculate the third value from any two numbers. If you enter data and the appropriate recognised measurement units for each, this calculator will convert between those units.

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Answer: how do do it

Explanation:

ur welcome

If an organism is classified in the animal kingdom, then it must Identify traits common to all animals and traits that can be used to distinguish groups of related animals.

The animal kingdom is the taxonomic kingdom that includes all animals, living or extinct. All animals on earth can be found in the taxonomic classification of the animal kingdom. Animals are classified into various subcategories to further define them, named as division, class, order, family, genus and species. Each classification is physically, anatomically or behaviorally in some way Similarities narrow as one moves down through divisions, classes, etc. until a unique species is defined.

We need to identify traits that are common to all animals and traits that can be used to distinguish between related animal groups. Animal classification systems group animals based on anatomy, morphology, evolutionary history, developmental traits, and genetic makeup.

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The complete question is as follows:

Complete the given sentence.

If an organism is classified in the animal kingdom, then it MUST_______.