name the instrument used to control current in an electric circuit.
Guys please help me​

A car accelerates uniformly in a straight line from rest at the rate of 2.2 m/s². The speed of the car after it has traveled 52 m is around 15.1 m/s.

To determine the speed of the car after it has traveled a distance of 52 m, we can use the equation of motion:

v² = u² + 2as,

where v is the final velocity, u is the initial velocity (which is zero since the car starts from rest), a is the acceleration, and s is the distance traveled.

Given:

Acceleration (a) = 2.2 m/s²

Initial velocity (u) = 0 m/s

Distance traveled (s) = 52 m

Plugging in these values into the equation:

v² = 0² + 2 * 2.2 * 52,

v² = 0 + 228.8,

v² = 228.8.

Taking the square root of both sides:

v ≈ √(228.8)

v ≈ 15.1 m/s.

Therefore, the speed of the car after it has traveled 52 m is approximately 15.1 m/s.

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Answer:

28.7m

Explanation:

Given parameters;

Work done  = 430J

Force applied  = 15N

Unknown:

Distance moved  = ?

Solution:

Work done is the force applied to move a body through a certain distance.

     Work done  = Force x distance

So;

         430  = 15 x distance

      Distance  = 28.7m

Answer:

The first one is Earths Tilt on its axis

Answer:

When a car brakes, it experiences a forward deceleration force, which is generated by the braking system. This force acts in the opposite direction to the car's motion and causes the car to slow down. As a result of this force, the horizontal forces acting on the car change.

When the brake is applied, the friction between the brake pads and the rotors generates a braking force that acts on the wheels. This force causes the wheels to slow down and, as a result, the car's forward motion is slowed down as well.

At the same time, the car's weight shifts forward, causing a decrease in the vertical force acting on the rear wheels and an increase in the vertical force acting on the front wheels. This increase in the front wheel's vertical force creates more friction between the tires and the road, which in turn generates a larger horizontal force that acts to slow down the car.

Additionally, as the car slows down, the aerodynamic drag acting on the car decreases, resulting in a smaller horizontal force acting on the car. However, the net effect of all these changes is a decrease in the car's forward motion and a corresponding decrease in the horizontal forces acting on the car.

The vertical height between the two climbers is approximately 5.15 meters.

To find the vertical height between the two climbers, we can analyze the vertical motion of the first aid kit.

Given:

Initial velocity of the kit (v₀) = 9.35 m/s

Launch angle (θ) = 56.4°

Vertical speed at the catching instant (vᵥ) = 0 m/s

We can break down the initial velocity into its vertical and horizontal components:

Vertical component: v₀ₓ = v₀ * sin(θ)

Horizontal component: v₀ᵧ = v₀ * cos(θ)

Since the vertical speed at the catching instant is zero, we can use the vertical component of the initial velocity and the acceleration due to gravity to calculate the vertical height.

The equation for vertical motion without considering air resistance is:

Δy = v₀ₓ * t + (1/2) * (-g) * t²

Where Δy is the vertical displacement, t is the time, and g is the acceleration due to gravity (approximately 9.8 m/s²).

At the instant of catching, the vertical displacement is equal to the vertical height between the climbers. Since the vertical speed is zero, the time taken for the kit to reach that point can be determined by dividing the vertical component of the initial velocity by the acceleration due to gravity:

t = v₀ₓ / g

Substituting the known values into the equation:

t = (v₀ * sin(θ)) / g

Now we can substitute the calculated time into the equation for vertical displacement to find the vertical height:

Δy = v₀ₓ * t + (1/2) * (-g) * t²

Substituting the known values into the equation:

Δy = (v₀ * sin(θ)) * [(v₀ * sin(θ)) / g] + (1/2) * (-g) * [(v₀ * sin(θ)) / g]²

Simplifying the expression:

Δy = [(v₀² * sin²(θ)) / g] - [(v₀² * sin²(θ)) / (2g)]

Calculating the numerical value using the given values:

Δy = [(9.35 m/s)² * sin²(56.4°)] / (2 * 9.8 m/s²)

Simplifying the expression and calculating the value:

Δy ≈ 5.15 m

Therefore, the vertical height between the two climbers is approximately 5.15 meters.

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As stronger winds cause waves to grow larger, the amount of energy lost to friction increases as the wind moves over the ocean

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, might be advantageous, they also provide a significant amount of resistance to motion.

Friction is defined as the resistance that results when surfaces rub together or the tension or disquiet that is caused when two persons of different opinions or ideas come together. When Republicans and Democrats meet to talk politics, it can cause conflict.

The imperfections on the two surfaces in contact are what produce friction. Even the smoothest surfaces include tiny abnormalities, and when two surfaces interact with one another, these irregularities cause friction. The friction increases as the imperfections get bigger.

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To add or subtract two vectors, just add or subtract the corresponding components. This is:

(7, 5) + (13, -5) = (7+13 , 5-5) = (20, 0)

Answer:

Deposition

Explanation:

The deposition phenomenon happens when sediment created by weathering and moved by erosion settles in a different location due to gravity

Deposition occurs when sediment, a combination of soil and rock produced by weathering, is eroded and transported to a new area.

Deposition is the act of depositing silt that has been transported by the wind, water, sea, or ice.

Earthen materials are worn away during erosion, a geological process in which they are moved by wind or water.

The removal of soil, rock, or dissolved material from one area on the Earth's crust and subsequent transport to another region for deposition are known as erosional processes. Erosion differs from weathering, which is a static process.

Given data ,

Let the sediment be deposited in an another location due to gravity

Now , As sediment, a mixture of soil and rock created by weathering, is eroded and moved to a new region, deposition takes place.

During three interrelated processes, lithification converts loose sediment grains that are produced by weathering and transported by erosion into clastic sedimentary rock. Deposition occurs when gravity and friction work against the forces that move sediment, enabling it to build up.

Hence , when sediment created by weathering and moved by erosion settles in a different location due to gravity , deposition takes place

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Answer:  D. 37.6 m/s

Explanation: its D

The specific heat capacity of the crown is 0.108 J/(g·°C).

The specific heat capacity of a substance is defined as the amount of heat energy required to raise the temperature of 1 gram of the substance by 1 degree Celsius.

We can use the formula for heat energy to calculate the specific heat capacity of the crown:

Q = m * c * ΔT

Where

In this case, the mass of the crown is 700 grams, the change in temperature is 90°C - 20°C = 70°C, and the heat energy generated is 5275.368 J.

Substituting these values into the formula, we get:

5275.368 J = 700 g * c * 70°C

Solving for c, we get:

c = 5275.368 J / (700 g * 70°C)

c = 0.108 J/(g·°C)

Therefore, the specific heat capacity of the crown is 0.108 J/(g·°C).

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According to the given statement Mrs. Brown's electricity bill for the current month is $5000.00.

To calculate Mrs. Brown's electricity bill for the current month, we need to determine the total number of kilowatt-hours (kWh) she has consumed and apply the corresponding rates.

1. Calculate the electricity usage:

  Current meter reading - Previous meter reading
  20,300 kWh - 17,800 kWh = 2,500 kWh

2. Determine the cost for the first 2000 kWh:

  $1.00/kWh * 2000 kWh = $2000.00

3. Determine the cost for the remaining kWh:

  500 kWh * $3.50/kWh = $1750.00

4. Add the fuel adjustment charge:

  $0.50/kWh * 2500 kWh = $1250.00

5. Calculate the total bill:

  $2000.00 + $1750.00 + $1250.00 = $5000.00


To calculate the electricity bill, we first find the difference between the current and previous meter readings.

In this case, Mrs. Brown used 2,500 kWh.

For the first 2000 kWh, the cost is $1.00 per kWh, resulting in a charge of $2000.00.

For the remaining 500 kWh, the cost is $3.50 per kWh, totaling $1750.00.

Additionally, a fuel adjustment charge of $0.50 per kWh is added to the bill. This amounts to $1250.00.

Finally, we add up all the charges to get the total bill, which is $5000.00.

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Answer:

concave lens is called a diverging lens as it diverges the light as it thicker at the edges and has a small depression in its centre and if it will be thicker in the middle than at the edges it will converge the light so as concave lens have a small depression in its centre so it refracts or diverges the light.

A force is changing the motion of the bus.

Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that form unless acted upon by an external force.

The applied force on the bus in the form of brakes acts as the external force on the bus.

According to Newton's first law of motion, the external force (brakes) will change the motion of the bus.

Thus, we can conclude that a force is changing the motion of the bus.

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Answer:

Fgrav. = GM1×M2/R2

Explanation:

Gravitational force is mostly related

to planetary bodies by Newton's law of gravitation which states that the gravitional force is proportional to the product of the mass of the object and inversely proportional to the square of the distance between them.

Hence in this case the Gravitational force,

Fgrav. = GM1×M2/R2

M1 and M2 are the mass of the two students and R is their distance apart

G is a constant known as gravitational constant.6.67408 × 10-11 m3/kgs2

Answer:

X: Absorbs energy from the core.

Y: Releases energy to the photosphere.

Explanation:

Convection is a mode of heat transfer through fluids (liquids or gas), and it requires material medium for its propagation.

The energy absorbed from the core of the Sun, is transferred through X (convection zone) by convectional process, and it flows to Y (radiative zone). Since the regions X and Y have different functions, the heat propagates from X causing photons to traverse through Y where it get released into the photosphere or the Sun's surface.

Therefore;

X: Absorbs energy from the core.

Y: Releases energy to the photosphere.

Answer:

X: Takes longer for photons to move through

Y: Releases energy to the photosphere

Explanation:

We have that for the Question "Name the two types of vaporization and explain the difference between them. Give one example of each. ​" it can be said that the types of vaporization are

Here privatization of liquid will only happen at the surface of the liquid exclusion then other sections of the liquid

This is is a phenomenon that occurs throughout the liquid

From the question we are told

Name the two types of vaporization and explain the difference between them. Give one example of each. ​

Generally

There are two types of vaporization , and they are

Here privatization of liquid will only happen at the surface of the liquid exclusion then other sections of the liquid

This is is a phenomenon that occurs throughout the liquid

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(1) The angular velocity at position 1 of a uniform rod rotating freely around an axis can be determined.

(2) The velocity of the center of mass at position 2.

(1) To determine the angular velocity at position 1, we need to consider the conservation of angular momentum. Since the rod is rotating freely, there are no external torques acting on it.

The initial angular momentum is zero, and at position 1, the angular momentum is given by L = Iω, where I is the moment of inertia of the rod and ω is the angular velocity. By substituting the values of mass and length of the rod into the formula for moment of inertia, we can solve for ω.

(2) To calculate the velocity of the center of mass at position 2, relative to position 1 and at an angle theta, we can use the concept of angular velocity and linear velocity. The linear velocity of the center of mass is given by v = ωr, where ω is the angular velocity and r is the distance between the center of mass and the axis of rotation. By considering the given angle theta and the length of the rod, we can determine the distance r.

Substituting the value of ω calculated in part (1) into the formula, we can find the velocity of the center of mass at position 2, relative to position 1 and at angle theta.

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(a) The initial temperature is 373.95 K.

(b) The final temperature is 546.15 K.

(c) The total internal energy change of the fluid during this process is 515.4 kJ.

(d) The process can be represented as an isochoric heating process on the P-v diagram and as an isobaric expansion process on the T-v diagram.

(a) To find the initial temperature, we can use the saturated steam tables. At a pressure of 200 kPa, the corresponding saturation temperature is 373.95 K.

(b) Since the volume doubles, the process is an isochoric (constant volume) heating process. Using the ideal gas law, we can determine the final temperature. The initial and final volumes are related by the equation V_final = 2V_initial. Since the mass remains constant, the specific volume (v) is inversely proportional to the density (ρ). Therefore, ρ_final = ρ_initial/2. Using the ideal gas law, we can calculate the final temperature to be 546.15 K.

(c) The total internal energy change can be calculated using the equation ΔU = mC_vΔT, where m is the mass of the fluid and C_v is the specific heat at constant volume. Given the mass as 0.5 kg, the specific heat of water at constant volume, and the temperature change, we can find that the total internal energy change is 515.4 kJ.

(d) On the P-v diagram, the process is represented as a vertical line at 200 kPa, indicating constant pressure. On the T-v diagram, the process is shown as an upward-sloping line, indicating an isobaric expansion process. The initial state is represented as a point on the left, and the final state is represented as a point on the right. The path between the initial and final states is a straight line connecting these two points.

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Answer:

s = 92.36 m

Explanation:

The distance covered by an object moving with uniform speed is given by the following formula:

s = vt

where,

s = distance covered by car during the time when driver was distracted in texting = ?

v = uniform speed of car = (95 km/h)(1 h/3600 s)(1000 m/1 km) = 26.39 m/s

t = time taken by the driver for texting = 3.5 s

Therefore, using these values in equation, we get:

s = (26.39 m/s)(3.5 s)

s = 92.36 m

Answer:

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Answer: The car slows down by 10 meters per second every second.

Explanation:

AnswerThe speed of a car is decreased uniformly from 30. meters per second to 10. meters per second in 4.0 seconds. What was the car's acceleration ?

We have the following data:

V (final velocity) = 10 m/s

Vo (initial velocity) = 30 m/s

ΔV  (speed interval)  = V - Vo → ΔV  = 10 - 30 → ΔV  = - 20 m/s

ΔT (time interval) = 4.0 seconds

a (average acceleration) = ? (in m/s²)

Explanation:

When designing a water rocket made from recycled or readily available materials, the main component is typically a two-liter plastic bottle. The conceptual design options for the water rocket include variations in fins, nose cones, and deployment mechanisms.

The options for the design of a water rocket include variations in fins, nose cones, and deployment mechanisms. Fins are essential for providing stability during flight. Different fin shapes and sizes can affect the rocket's stability and control.

Larger fins generally provide better stability but may increase drag, while smaller fins can reduce stability but improve aerodynamic performance. The choice of fin design depends on the desired trade-off between stability and aerodynamics.

The nose cone design is another important consideration. A pointed nose cone reduces drag and improves aerodynamics, allowing the rocket to reach higher altitudes.

However, a pointed nose cone can be challenging to construct using readily available materials. An alternative option is a rounded nose cone, which is easier to construct but may result in slightly higher drag.

The deployment mechanism refers to the method of releasing a parachute or recovery system to slow down the rocket's descent and ensure a safe landing. The options include a simple nose cone ejection system or a more complex deployment mechanism triggered by pressure, altitude, or time. The choice of deployment mechanism depends on factors such as reliability, simplicity, and the availability of materials for construction.

In the chosen design route, the emphasis is on simplicity, stability, and ease of construction. The rocket design incorporates moderately sized fins for stability and control, a rounded nose cone for ease of construction, and a simple nose cone ejection system for parachute deployment.

This design strikes a balance between stability and aerodynamic performance while utilizing readily available or recycled materials.

To complete a failure mode and effects analysis (FMEA), five aspects of the design should be considered. These aspects can include potential failure points such as fin detachment, parachute failure to deploy, structural integrity of the bottle, leakage of water, and ejection mechanism malfunction.

By identifying these potential failure modes, appropriate design improvements and safety measures can be implemented to mitigate risks.

The height a water rocket can reach is influenced by various physics principles. Factors that affect the flight of the rocket include thrust generated by water expulsion, drag caused by air resistance, weight of the rocket, and the angle of launch.

To optimize the height, the physics data required would include the mass of the rocket, the volume and pressure of the water, the drag coefficient, and the launch angle.

Experimental data can be obtained through launch tests where the rocket's flight parameters are measured using appropriate instruments such as altimeters, accelerometers, and cameras.

By analyzing and correlating the data, the computational model can be refined to predict and optimize the rocket's maximum height.

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Answer:

Explanation:

Some of the factors affecting intensity are: The energetic intensity of the source (the initial volume). The distance from the source (the volume at any point along the path). Any modifying elements in the light path (air, clouds, filters, reflectors, etc.) The factors affecting the intensity of light are diffraction.

Light has three properties: Wavelength, speed, and amplitude. The wavelength determines the type of light (color, etc.). Speed is determined by whether light passes through a vacuum or some material. The more photons emitted per unit time, the greater the intensity of the light. Directly, it is the power that determines the brightness of a bulb. That is why light bulbs have a power rating, i.e. a 60W bulb is enough to light a typical bedroom. But power is determined by the current and voltage which, in turn, is determined by the current.

The farthest away a target could be hit by a shell is approximately 1000 yards (rounded to the nearest whole number).

To solve the problem, we need to find the total distance that the shell can travel before it bursts.

The distance that the shell can travel is:

distance = rate × time

We are given that the shell can travel 500 yards in 1.5 seconds, so its speed is:

rate = distance ÷ time = 500 yards ÷ 1.5 seconds = 333.33 yards/second

Now we need to take into account the time it takes for the fuse to go off. Since it takes 3 seconds for the fuse to go off, the shell will have traveled:

distance = rate × time = 333.33 yards/second × (1.5 seconds + 3 seconds) = 999.99 yards

Therefore, the farthest away a target could be hit by a shell is approximately 1000 yards (rounded to the nearest whole number).

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Answer:

La velocidad del carguero será 42,889 \(\frac{km}{h}\), y en unidades del SI es 11,88 \(\frac{m}{s}\)

Explanation:

La velocidad es una magnitud física que expresa la relación entre el espacio recorrido por un objeto y el tiempo empleado para ello.

La velocidad es calculada como el cociente del espacio recorrido por un objeto entre el tiempo que este tarda en cubrir la trayectoria.

Su unidad en el Sistema Internacional de Unidades es el metro por segundo (m/s).

En este caso, el espacio recorrido es 0,772 km y el tiempo empleado para cubrir esa distancia es 65 segundos. Siendo 1 km=1.000 m y 1 h= 3.600 s. Entonces 0,772 km= 772 m y 65 s= 0.018 h. Por lo que la velocidad será:

\(Velocidad=\frac{0,772 km}{0,018 h}\)

Velocidad=42,889 \(\frac{km}{h}\)

En unidades de SI:

\(Velocidad=\frac{772 m}{65 s}\)

Velocidad= 11,88 \(\frac{m}{s}\)

La velocidad del carguero será 42,889 \(\frac{km}{h}\), y en unidades del SI es 11,88 \(\frac{m}{s}\)

To calculate the number of logs needed to keep the three children afloat in fresh water, we need to first determine the weight of the raft itself.


The weight of the raft can be calculated using the formula:

Weight of raft = weight of children + weight of logs

We are given that each child weighs 356 N, so the total weight of the children is:

3 children x 356 N/child = 1068 N

To find the weight of the logs, we need to know the density of the wood. Assuming that the logs are made of pine, which has a density of approximately 480 kg/m^3, we can calculate the weight of each log as follows:

Volume of each log = πr^2h = π(0.15 m)^2(1.80 m) ≈ 0.12 m^3

Mass of each log = density x volume = 480 kg/m^3 x 0.12 m^3 ≈ 58 kg

Weight of each log = mass x gravity = 58 kg x 9.81 m/s^2 ≈ 569 N

Now we can determine the weight of the logs by multiplying the weight of each log by the number of logs needed:

Weight of logs = weight of each log x number of logs

We can rearrange the formula for weight of the raft to solve for the number of logs:

Number of logs = (weight of raft - weight of children) / weight of each log

Plugging in the values we have calculated, we get:

Number of logs = (1068 N + weight of logs) / 569 N

Number of logs = (1068 N + number of logs x 569 N) / 569 N

Solving for number of logs, we get:

Number of logs = 1068 N / (569 N/ log - 1) ≈ 4 logs

Therefore, four logs will be needed to keep the three children afloat in fresh water.

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Answer:

its D

Explanation:

didnt see what u said lol they deleted it again :(

The time in which the car reaches it maximum Haight is ≈1.8 seconds.

We know that when the car leaves the ramp , it will move in upward direction and forward direction .

velocity of moving forward=  v cos(a).......(initial velocity of moving front)

velocity of moving  upward = v sin(a).......(initial velocity of moving up)

v is the  initial velocity of car(30m/s), a is the angle of ramp(37°).

velocity of moving up for car at Max. hight = 0m/s

We know that,

final velocity=initial velocity - gt (g is acceleration due to gravity, t is time)

when something moves upward .

so,

0=v sin(a)-9.8t

t≈1.8 seconds

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