A series RL circuit contains two resistors. The resistors are 60 Ω and 30 Ω. When calculating the circuit values, the total resistance used is _____.
60 Ω
80 Ω
30 Ω
90 Ω

Answer:

Choice 2: 6/17

Explanation:

4+7=11. 6+11= 17. so it's 6/17

2500 J

cause at that time pe (potential energy) becomes 0 .

And we all know energy can neither be created nor be destroyed it's just gets converted. :)

Answer:

The vertical component of the velocity can be found using the formula:

V₀y = V₀ * sin(θ)

where V₀ is the initial velocity, θ is the angle of projection, and V₀y is the vertical component of the velocity.

Substituting the given values, we have:

V₀y = 48 * sin(53°)

Using a calculator, we can evaluate sin(53°) to be approximately 0.799:

V₀y = 48 * 0.799

V₀y ≈ 38.352

Therefore, the vertical component of the velocity with which the ball was launched is approximately 38 meters/second, which corresponds to option B.

Answer:

B.) 38 meters/second

Explanation:

The resultant of the displacement is 336.5m

The process of splitting a vector into its components is called resolution of the vector. The vectors are splitted into vertical and horizontal component.

For the first displacement;

The vertical component = - 150 sin45 = -106.1 m

The horizontal component = - 150 cos 45° = -106.1 m

For the second displacement;

The vertical displacement = - 85sin90 = -85

The horizontal component = 0

For the third displacement;

The vertical displacement = 550 sin55 = 450.5

The horizontal displacement = 550 cos 55 = 315.5

Sum of vertical component = 450.5-85-106.1 = 263.4

sum of horizontal component = 315.5 -106.1 = 209.4

Using Pythagorean theorem

R = √ 263.4² + 209.4²

R = √113227.92

R = 336.5m

The resultant angle = tan^-1( 263.4/209.4)

= tan^-1(1.26)

= 51.56°

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Answer:

2600 N

Explanation:

F = ma

(x-600) = 250 * 8

x = 2000 + 600 = 2600 N

The main force exerted from the engine to maintain this forward acceleration is 2600 N.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. Force is a vector quantity with SI unit Newton (N).

Given that: mass of the car: m = 250 kg.

Forward acceleration of the car: a = 8m/s^2.

constant resistive force: f = 600N.

Let the main force exerted from the engine = F

Now, from Newton's 2nd law of motion:

ΣF = ma

(F - f) = ma

F = ma +f

= 250 kg × 8m/s^2 +  600N

= 2600 N.

Hence,  the force exerted from the engine to maintain this forward acceleration is 2600 N.

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Answer:

\(d =3.7*10^{-3} m\)

Explanation:

From the question we are told that:

Mass \(m=1.2kg\)

Spring constant \(\mu=22Nm^{-1}\)

Amplitude \(A=5cm=0.05m\)

Generally the equation for displacement d is mathematically given by

 \(d = Asin(\omega t)\)

Where

 \(\omega=angular\ velocity\)

 \(\omega=\sqrt{k/m}\)

 \(\omega=\sqrt{22/1.2}\)

 \(\omega=4.2817rads^{-1}\)

Therefore  

 \(d = 0.05*sin(4.2817*1)\)  

 \(d =3.7*10^{-3} m\)

The answer is that the time the diver was in the air is 1.13 seconds.

To determine the time the diver was in the air, we can use the kinematic equation:

Δy = viΔt + 1/2at²,

where Δy is the displacement, vi is the initial velocity, a is the acceleration due to gravity (g), and t is the time.The initial velocity, vi, is given as 5.5 m/s, and since the diver jumps upwards, the displacement, Δy, is equal to the height of the board, which is 3.0 m. The acceleration due to gravity, a, is -9.8 m/s² (negative because it acts downwards).Substituting the known values into the equation:3.0

m = (5.5 m/s)t + 1/2(-9.8 m/s²)t²

Simplifying, we get:

4.9t² + 5.5t - 3.0 = 0

We can solve for t using the quadratic formula:

t = (-5.5 ± √(5.5² - 4(4.9)(-3.0))) / (2(4.9))= (-5.5 ± 1.59) / 9.8= -0.47 s or 1.13 s

Since time cannot be negative, the time the diver was in the air is 1.13 seconds.

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Answer:

Sexual reproduction.

Explanation:

Reproduction can be defined as a biological process which typically involves living organisms producing an offspring.

Basically, there are two (2) methods of reproduction and these are;

I. Asexual reproduction: it involves the cloning of a living organism to produce an offspring because there is only a single parent.

II. Sexual reproduction: it involves the combination of the genome (gamete) of a male and female living organism during fertilization.

In this scenario, the botanist from the nursery plans to develop a large number of new spider plants that has larger flowers. Thus, the type of reproduction the botanist should use to develop the new spider plants is sexual reproduction because it would help the parent plant reproduce offsprings with different traits such as spider plants with large flowers. Also, the botanist should use sexual reproduction rather than asexual reproduction because asexual reproduction will only make the parent plant reproduce that have the same type of traits as themselves.

Answer:

i believe it would be C

Explanation:

Answer:

the awnser is A becuse the hair help.

In order to calculate the force between the charges, we can use the formula below:

Where F is the force (in Newtons), K is the Coulomb constant (K = 9 * 10^9), q1 and q2 are the charges (in Coulombs) and d is the distance between them (in meters).

So, for q1 = q2 = 10 C and d = 12 m, we have:

Therefore the force between the charges is 6.25 * 10^9 N.

Answer:

Explanation:

Velocity measuring by m/s ,speed measuring by m/s,acceleration measuring by m/s² and velocity is vector physical quantity and speed is scalar physical quantity

To better understand crash dynamics we have to look at "the laws of motion."

The laws of motion

The laws of motion were introduced by Sir Isaac Newton in 1687 in his book Philosophiæ Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy"), which defined the laws of motion, or three fundamental laws that govern the movement of bodies. The laws of motion, according to Newton, govern the motion of an object or a system of objects that interact.

It defines the concepts of force and mass, and the fundamental dynamics of motion.The following are the laws of motion:Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. The velocity of an object changes proportional to the force applied to it, and the acceleration of an object is proportional to both its force and its mass. For every action, there is an equal and opposite reaction.

Therefore, these laws are necessary to fully grasp crash dynamics because they explain how objects respond to outside forces that cause them to accelerate or decelerate.

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The statement that best describes the energy in this system is: The potential energy in the system is greatest at X.

When the ball is at the top of the hill at point X, it has the greatest potential energy in the system. Potential energy is the energy an object has due to its position or configuration in a system. In this case, the ball has the potential to roll down the slope and gain kinetic energy, which is the energy of motion.

As the ball rolls down the slope from point X to point Y, it loses potential energy due to its decreasing height above the ground. However, as it gains speed and motion, it gains kinetic energy. Therefore, the statement "total energy in the system decreases as the ball moves from X to Y" is not accurate.

At the bottom of the slope at point Y, the ball has the least potential energy and the most kinetic energy. Once the ball reaches the bottom of the slope, it will have converted all of its potential energy into kinetic energy.

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The amount of force required by the farmer to move the pig is 1176N. A force in physics is an effect that has the power to alter an object's motion.

A mass-containing object's velocity can be altered by a force (e.g. moving from a state of rest). Motion can be characterised as a shift in an object's location with regard to time. Motion is demonstrated by things like a book falling off a table, water running from a faucet, rattling windows, etc. There is motion even in the air we breathe! The universe is a moving thing. The universe in which we exist is constantly in force.

Fmax = 0.8*150*9.8 Fmax = 1176N is the maximum force needed to move the pig.

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The complete question is -

Problem 5.29 7 of 15> A stubborn 150 kg pig sits down and refuses to move. To drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 N. The coefficients of friction between the pig and the ground are p, = 0.80 and μ'= 0.50. Part A Calculate the force which farmer needs to apply to budge the pig. Express your answer to two significant figures and include the appropriate units. HA F Value Units Submit Request Answer Part B This question will be shown after you complete previous question(s).

The acceleration of the falling obeject of mass 2.55 kg is  -8.2 m/s². And the right option is d) -8.2 m/s².

This can be defined as the rate of change of velocity.

To calculate the acceleration of the object, we use the formula below.

Formula:

Where:

Note: Taking forces acting upward to be positve and downward force to be negatove,

From the question,

Given:

Substitute these values into equation 2

Hence, The acceleration of the object is -8.2 m/s².

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La erosión costera es la pérdida o desplazamiento de tierra, o la remoción a largo plazo de sedimentos y rocas a lo largo de la costa debido a la acción de olas, corrientes, mareas, agua impulsada por el viento, hielo transportado por el agua u otros impactos de marejadas ciclónicas.

Answer:

C. Overload circuit

Explanation:

Sana ka tulong mark me brainliest plsss thnks

Answer:

The motion of the object between 0 and 8 seconds, as represented by the graph above, can be broken down into four segments:

For the first 4 seconds, the object experiences an increased velocity. This means that the object is accelerating downwards due to the force of gravity. During this time, the velocity increases at a constant rate of 9.8 m/s^2.

Between 4 and 6 seconds, the object experiences a constant velocity. This means that the object continues to fall with a steady speed, without any further increase in its velocity.

Between 6 and 7 seconds, the object again experiences a constant velocity. This means that the object continues to fall with the same steady speed as before.

Finally, between 7 and 8 seconds, the object experiences a decreased velocity. This means that the object is decelerating, or slowing down, as it approaches the ground. This could be due to air resistance or other factors.

So, to summarize, the motion of the object between 0 and 8 seconds is characterized by an initial increase in velocity for 4 seconds, followed by two periods of constant velocity for 2 seconds and 1 second respectively, and finally a decrease in velocity for 1 second.

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\( \Large {\underline { \sf {Required \; Solution :}}}\)

We have ―

We have been asked to calculate the acceleration of the car.

\(\qquad \implies\boxed{\red{\sf{ F = ma }}}\\\)

\( \quad \twoheadrightarrow\sf { 450 = 1300a} \\ \)

\( \quad \twoheadrightarrow\sf {\cancel{ \dfrac{450}{1300}} = 1300a} \\ \)

\(\quad\twoheadrightarrow\boxed{\red{\sf{0.346 \; ms^{-2} = a }}}\\\)

Therefore, acceleration of the car is 0.346 m/s².

Answer:

Force= 1000 Newtons. Distance= 150 metres. Work= 150000 Joules. So, the work done by crane that lowers 1000 Newton's of a material a distance of 150 meters is 150000 Joules.

Taha xain malai ..........hhdd

This is the pressure at the top of the container due to the height of the water. The pressure at the bottom of the container due to the height of the water is 0 Pa since the datum was set at the bottom.

Pressure is a physical quantity used to measure the force applied by an object to another object or by an object to a surface. It can be expressed as the force per unit area and is typically measured in units such as pounds per square inch (psi) or pascals (Pa). Pressure can be applied to gases, liquids, and solids, and is generated by the weight of the atmosphere, the force of gravity, and by the movement of air or liquids. Pressure can also be created by mechanical devices such as pumps and compressors, as well as by chemical reactions.

ρ = density of water = 1000 kg/m3

g = acceleration due to gravity = 9.81 m/s2

h = height of the container = 7.7 in = 0.198 m

Using the equation ρgh = density x gravity x height, we can calculate the pressure at the top of the container to be:

ρgh = (1000 kg/m3)(9.81 m/s2)(0.198 m) = 1960.38 Pa

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It will decrease the capacitance. this effect will be produced on a capacitor if the separation between the plates is increased. Hence option D is correct.

The capacity of a capacitor to store electric charge is determined by its capacitance. It is inversely proportional to the gap or distance between the capacitor plates and directly proportional to the area of the capacitor plates.

The capacitance of a capacitor reduces when the distance between the plates is increased. Because of the weaker electric field and decreased capacity to store charge caused by the increased gap between the plates, this happens. The capacitor's capacitance therefore drops.

As stated in option D, a capacitor's capacitance will decrease as the distance between its plates increases.

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A car accelerates from rest at 4.5 m/s² for 3 seconds, the car's velocity after 3 seconds is 13. 5 m/s

The distance the car travel in the 3 seconds is 40. 5m/s

The first equation of motion is v = u + a t. It explains the relationship between velocity and time.

V = Final velocity

u = Initial velocity

a = acceleration

t  = time.

How to determine the velocity

When an object is brought to rest or moves from resting, U, initially velocity equals 0.

From the formula,

V = u + at

V = ?

u = 0, because the object was at rest.

a = 4. 5 m/ s²

t = 3 seconds

Velocity, V = 0 + 4. 5 × 3

Velocity , V = 0 + 13. 5

Velocity, V = 13.5 m/s²

How to determine the distance

Velocity = Distance ÷ time

Velocity, V = 13. 5 m/s²

time = 3 seconds

distance = ?

Distance = Velocity × time

Distance = 13. 5 × 3

Distance = 40. 5 m

Therefore, the car's velocity after 3 seconds is 13. 5 m/s² and the distance the car travels after 3 seconds is 40. 5m

The front of the truck is designed to crumple during a collision to absorb the impact energy, slow down the collision, and protect the well-being of the passengers. This design feature helps increase the collision time, reduce the forces acting on the passengers, and minimize the risk of severe injuries.

Danica observes a collision between two vehicles. She sees a large truck driving down the road. It strikes a small car parked at the side of the road. On colliding, the truck applies a force on the stationary car, and the stationary car applies an opposite force on the truck. The front of the truck is designed to crumple in order to absorb the impact energy and slow down the collision , which protects the well-being of the passengers.

During a collision, the principle of Newton's third law of motion comes into play. According to this law, for every action, there is an equal and opposite reaction. In the case of the collision between the truck and the car, the truck exerts a force on the car, pushing it forward, while simultaneously experiencing an equal and opposite force from the car.

The purpose of designing the front of the truck to crumple is to increase the collision time and absorb the kinetic energy. When the truck collides with the stationary car, the front of the truck deforms, crumples, and absorbs a significant amount of the impact energy. This process increases the time over which the collision occurs, reducing the forces acting on the passengers and minimizing the risk of severe injuries.

By allowing the truck to crumple, the kinetic energy of the collision is transformed into other forms, such as deformation energy and heat. This energy transformation helps protect the passengers by reducing the deceleration forces acting on them. It also helps prevent the transfer of excessive forces to the car's occupants and reduces the likelihood of severe injuries.

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Answer:

Answer:

The acceleration is 5 m/s² and the distance is 562.5  m.

Explanation:

Given that,

Initial velocity of the plane, u = 0 (at rest)

Final speed, v = 75 m/s

Time, t = 15 s

We need to find the acceleration of the plane and distance it travel before takeoff.

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{75-0}{15}\\\\a=5\ m/s^2\)

Let the distance is d.

\(v^2-u^2=2ad\\\\d=\dfrac{v^2-u^2}{2a}\\\\d=\dfrac{(75)^2-(0)^2}{2\times 5}\\\\d=562.5\ m\)

So, the acceleration is 5 m/s² and the distance is 562.5  m.

Answer:

insomnia

I think it is option C.

hope it helps