Which of the following is the smallest object? O A Neutron Star OA Red Drawf OA White Dwarf O A G-type Main-Sequence Star O The Earth

The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

Combination to prepare tertiary alcohol:

A Grignard reagent interacts first with an ester to produce a ketone, which then undergoes further reactions to produce tertiary alcohol.

Process to form tertiary alcohol:

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The current in each branch of the circuit is 9.5 A and 0 A.

Point B, according to Kirchoff's junction law equation is

i = i₁ + i₂                                                            ......equation 1

Now, according to Kirchoff's Loop law,

Loop 2 is anticlockwise, calculates the current i₂ equation is

21.4 - 50i₂ - 6 - i - 100i₂ = 0

150i₂ + i = 15.4                                                            ......equation 2

Loop 1 is clockwise, calculates the current i₁ equation is

20.5 - 30i₁ - 6 - i - 40i₁ - i₁ = 0

80i₁ + i = 14.5                                                            ........equation 3

substitute equation 1 in equation 3 for the value of i,

81i - 80i₂ = 14.5                                                  .....equation 3

Upon, subtracting equation 3 from equation 2, we get i₂ = 9.5 A

substituting the value of i₂ in equation 3, we get i = 9.5A

Hence on substituting value for i₁, in equation 1 , we get i₁ = 0 A

Hence, the current in each branch of the circuit is 9.5A, 9.5A, 0A

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At the lowest point of her swing, she can withstand a maximum speed of 10.78 m/s.

Given that,

Mass of the carpenter = 61.7 kg

Length of the rope = 11.5 m

Capable force = 1229 N

Centripetal force acting on the body,

F = mv²/r = (61.7× v²)/11.5 = 5.37 v²

Gravitational force acting on her is

F = m × g = 61.7 × 9.81 = 605.28 N

By summing up gravitational and centripetal forces to get the total available force,

5.37 v² + 605.28 = 1229

5.37 v² = 623.72

v² = 116.15

v = 10.78 m/s

Hence, the maximum speed at the low point of her swing is 10.78 m/s.

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Neurotransmitters carry chemical signals (“messages”) from one neuron (nerve cell) to the next target cell.

A neuron sending a signal (i.e., a presynaptic neuron) releases a chemical called a neurotransmitter, which binds to a receptor on the surface of the receiving (i.e., postsynaptic) neuron. Neurotransmitters are released from presynaptic terminals, which may branch to communicate with several postsynaptic neurons.

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Answer:

+3 in Atom, +9 in Nucleus

Explanation:

Charge of atom:

Neutrons are neutral in charge therefore ignore those for this portion,

there are 9 protons (+) and 6 electrons (-).

9 - 6 = +3 charge in atom

Charge of nucleus:

Neutrons are neutral as said before, there are 9 protons (+) and 6 neutrons (0).

9 + 0 = +9 charge in atom

The vertical acceleration of the ball at its highest altitude is 0 m/s.

It is possible for an item to have both zero acceleration and non-zero velocity because acceleration is the change in velocity. Since there is no change in velocity while an object is moving at a constant speed, it experiences no acceleration.

The bullet reaches its highest point when its vertical velocity is zero. The vertical portion of the velocity vector will now point downward. The projectile's horizontal range, which is determined by the object's beginning velocity, is referred to as the projectile's range.

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To solve this problem, we can apply the principle of conservation of angular momentum.Since the final angular velocity is zero, the bar will not rotate after the collision. Therefore, the other ball will not rise after the collision, and it will remain at the same height.

The angular momentum (L) of an object can be calculated as the product of its moment of inertia (I) and angular velocity (ω):

L = I × ω

For the system consisting of the bar and the two balls, the initial angular momentum is zero, and after the collision, the angular momentum is given by:

L = I × ω

The moment of inertia (I) of the system is the sum of the moment of inertia of the bar and the moment of inertia of the two balls.

The moment of inertia of the bar (I\(_{bar}\)) about its center can be calculated as:

I\(_{bar}\) =  × m\(_{bar}\) × L²

where m\(_{bar}\) = 8.0 kg is the mass of the bar and L = 4.0 m is the length of the bar.

The moment of inertia of each ball (I\(_{ball}\)) about the pivot point can be calculated as:

I\(_{ball}\) = m\(_{ball}\) × R²

where m\(_{ball}\)= 5.0 kg is the mass of each ball, and R is the distance from the pivot point to the ball.

Since the balls are attached to the ends of the bar, the distance from the pivot point to each ball is half the length of the bar:

R = \(\frac{L}{2}\)= \(\frac{4}{2}\) = 2.0 m

Now, let's calculate the total moment of inertia :

I\(_{bar}\)= (1/12) × 8.0 kg × (4.0 m)²

= 8/3 kg·m²

I\(_{ball}\)= 5.0 kg × (2.0 m)²

= 20 kg·m²

I\(_{ball}\)= I\(_{bar}\) + 2 × I\(_{ball}\)

= 8/3 kg·m² + 2 * 20 kg·m²

= 8/3 kg·m² + 40 kg·m²

= 8/3 kg·m² + 120/3 kg·m²

= 128/3 kg·m²

After the collision, the system will rotate about the pivot point with an angular velocity (ω). The angular velocity can be calculated from the conservation of angular momentum equation:

L\(_{initial}\) = L\(_{final}\)

0 = I\(_{initial}\) × ω\(_{initial}\) + I\(_{ball}\) × ω\(_{final}\)

Since the initial angular velocity is zero, we can solve for the final angular velocity:

I\(_{ball}\) *ω\(_{final}\)= 0

Now, let's calculate the final angular velocity (ω\(_{final}\)):

ω\(_{final}\)= 0 / (I\(_{total}\) + I\(_{ball}\))

= 0 / (128/3 kg·m² + 20 kg·m²)

= 0 / (128/3 kg·m² + 60/3 kg·m²)

= 0 / (188/3 kg·m²)

= 0

Since the final angular velocity is zero, the bar will not rotate after the collision.

Therefore, the other ball will not rise after the collision, and it will remain at the same height.

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Explanation:

sorry but Oz is the option or anything else can clarify

Engineers have developed solar energy technology that reduces the need for other sources of energy that can pollute the atmosphere. So, option C.

Solar energy is defined as the solar radiation that has the potential to ignite chemical processes, produce heat, or generate electricity.

Here,

In order to protect wildlife, and ecosystems, it is imperative that greenhouse gas emissions are reduced and climate change is mitigated. Solar energy plays a significant part in this as a renewable source of energy.

Additionally, solar energy can reduce water use in energy production and enhance air quality.

An extremely crucial factor considering the scarcity of water is that solar energy does not produce waste or contaminate water. Wind energy is essential for preserving hydrological resources because it consumes among the least amounts of water compared to fossil fuels and nuclear power facilities.

Hence,

Engineers have developed solar energy technology that reduces the need for other sources of energy that can pollute the atmosphere. So, option C.

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The average source current is 149.94 mA.

A square wave inverter has a direct current (DC) source of 125 V, an output frequency of 60 Hz, and an RL series load with R = 20 Ω and L = 25 mH. We are to determine the expression for the load current, RMS load current, and average source current.Expression for load current in the given circuit:The expression for the load current is given as,il = (Vm/R)sin(ωt)where Vm is the maximum voltage across the load, R is the resistance, ω is the angular frequency, and t is the time.For the given circuit, Vm = 125 V, R = 20 Ω, and ω = 2πf = 377 rad/sil = (125/20)sin(377t) = 6.25sin(377t)RMS load current in the given circuit:The RMS value of the load current is given as,IRMS = (Vm/√2R) = (125/√2×20) = 55.902 ATherefore, the RMS load current is 55.902 A.Average source current in the given circuit:For the given circuit, the average source current is given as,iav = (1/T) ∫i(t)dtwhere T is the time period of the square wave. For the given circuit, the time period T = 1/f = 1/60 = 0.0167 sAs the load current is a square wave, we need to integrate it over a time period of 0 to T/2 and then multiply the result by 2 to obtain the total average value.iav = (2/T) ∫0T/2il dt= (2/0.0167) ∫06.25sin(377t) dt= 149.94 mA.

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The voltage in the secondary coil for a step up transformer is 1.58 x 10³ Volts.

The potential difference between two ends of a metallic conductor is called the voltage.

The primary coil has Np = 250 turns and the secondary coil has Ns = 475 turns. If the input effective voltage is 83.0 V,

Turn ratio = Ns/Np = Vs/Vp

Substituting the values, we get the value of Vs

Vs =(475/250) x 83V

Vs = 1.58 x 10³ Volts

Thus, the voltage in the secondary coil is 1.58 x 10³ Volts

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The object in the image is called an electromagnet

The strength of the magnetic field can be increased by increasing the number of turns.

An electromagnet is a type of magnet that is created by the flow of electric current through a coil of wire. Unlike a permanent magnet, which produces a magnetic field at all times, an electromagnet's magnetic field is created and maintained by the flow of current.

The strength of the magnetic field produced by an electromagnet depends on several factors, including the number of turns in the coil, the current flowing through the wire, and the material of the core (if one is used).

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The formula V = π r² h or V = π R² H is used to measure the volume of a cylinder.

The volume of a cylinder is the density of the cylinder which indicates the amount of material that can be held in it or how much amount of any material can be immersed in it. To find a cylinder's volume, the formula to be used is v = π r² h (V = π R² H). In this formula, V is the volume of the cylinder; π r² represents the area of the base of the cylinder, with radius 'r'; h is the height of the cylinder.

Therefore, the given V = π r² h or V = π R² H is the formula to calculate a cylinder's volume.

"

Correct question is as follows:

What formula is this V = Πr²h or V = π R² H?

"

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The magnification of the object placed 6.4 cm in front of a concave mirror with a focal length of 9.9 cm is -0.62. To solve for the magnification, we can use the formula M = -di/do where M is the magnification, di is the image distance, and do is the object distance.

First, we need to find the image distance by using the mirror equation, which is 1/f = 1/do + 1/di where f is the focal length of the mirror. Rearranging the equation, we get di = 1/(1/f - 1/do). Plugging in the values, we get di = -4.14 cm. Next, we can use the magnification formula to solve for M. M = -di/do = -(-4.14 cm)/(6.4 cm) = -0.62. The negative sign indicates that the image is inverted compared to the object. Therefore, the magnification of the object placed 6.4 cm in front of a concave mirror with a focal length of 9.9 cm is -0.62.

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The electric fields is always directed from higher potential to the lower potential.

The electric fields always aiming from the region of higher potential to the region of lower potential. So the force of electrostatic and the direction of the travel of electrons will be always from lower potential to the region of higher potential.

An electric field is defined as the physical field which covers the electrically charged particles and also they can apply force on all other charged particles.

So we can conclude that the electric fields is always directed from higher potential to the lower potential.

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The speed of a water wave can be determined by multiplying the frequency by the wavelength.

Therefore, the speed of a water wave with a frequency of 2 Hz and a wavelength of 1.0 m is 2 m/s. This is because frequency is the number of complete waves that pass a given point in one second, and wavelength is the distance between two consecutive crests or troughs of a wave.

By multiplying these two values, we can calculate the speed of the wave. In this case, the wave travels at a speed of 2 meters per second. It is important to note that the speed of a wave depends on the properties of the medium through which it travels. Water waves, for example, travel at different speeds depending on factors such as the depth of the water, the temperature, and the salinity of the water.

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We have:

vi = initial speed = 4 m/s

vf = final speed = 25 m/s

t= time = 5 s

a = acceleration = ?

Apply:

Replace with the values given:

Answer: 4.2 m/s^2

The Acceleration of the car is 4.2 m/s.

We will use the formula of acceleration.

a = vu - vi / t

Given:

vi = initial speed = 4 m/s

vu = final speed = 25 m/s

t= time = 5 s

a = acceleration = ?

Now, we will put the given values in the formula,

a = vu - vi / t

a = 25 - 4 / 5

a = 21 / 5

a = 4.2 m/s

Therefore, the Acceleration of the car is 4.2 m/s.

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Answer:

5.6*10^23. if 10^n is greater, that means its the larger value. hope dis helps

Explanation:

Answer:

K.E is 90.625 J

Explanation:

Data:

Mass = m = 43.5kg

Distance = d = 1.3km = 1300 m

Time = t = 10.4 min = 624 sec

Accelaration = a or g = 9.8

Formula for kinrtic energy

K.E = 1/2mv²

Find velocity

V = d/t = 1300/624 = 2.0833333333333 m/s

Put values in formula

K.E = 1/2 (43.5)(2.084)² = 90.624999999995

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Answer:

Because the ball is dropped, we are going to assume its initial velocity is 0. With that said, acceleration is essentially the change in the velocity versus the change in time, hence the unit m/s^2, which can be thought of as “meters per second per second.” The only force acting on the ball is gravity.

That being said, you can simply divide the change in velocity by the change in time, giving you an answer of 9.8 m/s^2, which is the value of g. Even if they did not give you a time, the answer would still always be the value of g (that is if the question pertains to earth), as acceleration due to gravity is a constant.

Explanation:

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This is a what do you think question.

The ball that is thrown straight up into the air with a velocity of 63. 7 m/s after 3s will have a velocity of: 34.3 m/s

The formula for the vertical launch upward and the procedure we will use is:

vf = v₀ - g * t

Where:

Information about the problem:

Applying the final velocity formula we get:

vf = v₀ - g * t

vf = 63. 7 m/s - 9.8 m/s² * 3 s

vf = 63. 7 m/s - 29.4 m/s

vf = 34.3 m/s

In physics vertical launch upwards is the motion described by an object that has been launched vertically upwards in which the height and the effect of the earth's gravitational force on the launched object are taken into account.

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Hi there!

We can use the following:

U (Gravitational Potential Energy) = mgh

m = mass of object (kg)

g = acceleration due to gravity OR gravitational field strength

h = height, or displacement (m)

ΔU = Uf - Ui, so:

Uf = 3 × 1.5 × 10 = 45 J

Ui = 3 × 0 × 10 = 0

ΔU = Uf - Ui = 45 - 0 = 45 J

The deceleration for a car traveling at 55 km/h can be interpolated to be 7.06 m/s².

A) To find whether the car will stop in time or not, we have to use the below formula:Where,

t = time taken to stop

v = initial velocity

u = final velocity

a = deceleration distance = vt + 0.5at²

We can use the above formula and find the distance covered by the car before stopping.

If the distance covered by the car is less than 40 m, then the car will stop in time and the child will be saved. If the distance is greater than or equal to 40 m, then the car will not be able to stop in time and the child will be hit.

For a car traveling at 55 km/h, the speed is 15.28 m/s. The deceleration values for different cars can be found from the table below:Speed (m/s) Braking Distance Toyota Corolla
(m) Nissan 200SX
(m) Mercedes C36
(m) Ferrari550 Maranello
(m) Lexus LS400
(m)60 14.9 17.2 20.1 24.8 16.070 20.3 23.4 27.4 33.8 21.880 26.5 30.6 35.8 44.1 28.490 33.6 38.7 45.3 55.8 36.0100 41.5 47.8 55.9 68.9 44.4110 50.2 57.8 67.7 83.4 53.8120 59.7 68.8 80.5 99.2 64.0

Therefore, Interpolation shows that the deceleration for an automobile moving at 55 km/h is 7.06 m/s2. .

Using the formula for deceleration with initial velocity of 15.28 m/s, we get the distance covered by the car before stopping to be:distance = (15.28)² / 2 * 7.06 = 19.68 m

As the distance covered by the car is less than 40 m, the car will stop in time.

B) The limitations of this model are:This model assumes that the car is traveling on a flat surface and the road conditions are good.

The model does not take into account the reaction time of the driver and assumes that the driver reacts immediately to the child running onto the road.

The model does not take into account the age of the vehicle, the weight of the vehicle, the condition of the brakes and tires, and other factors that may affect the braking distance of the car.

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Answer:

A. Pu -239

Explanation:

An isotope is an element with the same atomic number but different mass number. most isotope are unstable, having short half life.

Curium-242 is an isotope produced when Plutonium 239 is bombarded by an alpha particle. This reaction between Plutonium 239 and alpha particle gives curium-242, neutron and a high amount of energy as the products.

Curium oxidizes easily, and it is a dangerous metal which can cause cancer initiation when absorbed by biological materials e.g bones or tissue.

Answer: So that it can function.

Explanation:

The net force on the rope will be equal to 1.6 N.

The net force can be defined as the vector sum of forces acting on a body. The net force can be described as a single force providing same the effect as the original forces on the body's motion.

The net force acting on an object becomes the resultant force. The net force has the same effect on the motion as all actual forces taken together by the object.

Given, the applied force by Mrs. Cadillac's class = 50.4 N

The applied force by Mrs. Barr's class = 48.8 N

The net force = 50.4 N + (-48.8N) = 1.6 N

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Answer:

Defined below

Explanation:

Climate change is simply the long term change in the average weather patterns that are associated with the local, regional and global climates of the earth. Climate change is usually driven by human activities like burning of fossils; natural processes like cyclic ocean patterns; external factors like volcanic eruptions.

Answer:

Earth revolving once around the Sun

Explanation:

The Earth is one of the planets that make up the Solar system. The earth undergoes two phenomena called "ROTATION" and "REVOLUTION". Rotation refers to the moving around of an object along its own axis while revolution refers to the moving of an object around another object.

The Earth rotates (along its axis) to produce the day and night (24 hours). However, the revolution of the Earth around the largest planetary body, which is the SUN, takes approximately 365 days to complete. Hence, the Earth's revolution around the sun produces the year (365 days).