How is ultrasound used to detect the depth of the sea?

Answer:

-12.7

Explanation:

Answer: -38.2

Explanation: -50 1/2 + 10 = -40 1/2 + 2 = 38 1/2 + 0.3 = 38.2

Answer:

(Option B)The car travels 15km in 15 minutes.

Explanation:

Notice that the speed is written using units of km/h and the time is written using units of minutes.

Convert the time interval to hours. Remember that 1 hour equals 60 minutes:

15 min = 15 min × \(\frac{1h}{60~min}=0.25h\)

The distance d that a particle travels during a time t if it moves at an average speed v is given by the formula:

d = v · t

Replace v=60km/h and t=0.25h to find the distance traveled by car:

\(d=(60\frac{km}{h}) ~x~(0.25h)=15km\)

Therefore, the car travels 15km in 15 minutes.

Hope this helps!

If you have any queries please ask.

The velocity with which the rock initially kicked if the cliff is 5 m high and the rock lands 7m from the base of the cliff is 6.93 m / s

s = ut + 1 / 2 at²

s = Distance

u = Initial velocity

t = Time

a = Acceleration

In vertical motion,

s = 5 m

u = 0

a = 9.8 m / s²

5 = 0 + ( 1 / 2 * 9.8 * t² )

t² = 1.02

t = 1.01 s

In horizontal motion,

s = 7 m

a = 0 ( Since velocity is constant )

7 = 1.01 u + 0

u = 7 / 1.01

u = 6.93 m / s

Therefore, the velocity with which the rock initially kicked is 6.93 m / s

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Answer: If there is a higher friction, the opposition force is higher so that it can reduce our speed. So, a factor that affects friction is the roughness or smoothness of the surface of the object. In comparison of the table with the fabric, the fabric will have a more opposition force. As the surface of the fabric is usually rougher than the surface of a smooth table. As there is more friction on a fabric, we will feel more opposition force on our finger tip.

A change in pressure will cause a corresponding change in the size of the air bubble trapped inside the test tube.

The relationship between pressure and volume of a gas is described by Boyle's Law, which states that at a constant temperature, the pressure and volume of a gas are inversely proportional. Mathematically, this can be expressed as P1V1 = P2V2, where P1 and V1 are the initial pressure and volume of the gas, and P2 and V2 are the new pressure and volume of the gas, respectively.

Therefore, if the pressure inside the test tube increases, the volume of the air bubble trapped inside will decrease, and vice versa. For example, if the pressure inside the test tube doubles, the volume of the air bubble will be reduced to half of its initial volume.

A change in pressure will cause a corresponding change in the volume of air trapped inside the test tube, according to Boyle's Law. This relationship between pressure and volume is important in many areas of science and technology, such as in the design of engines, compressors, and pneumatic systems.

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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:

The answer to your question depends on the specific precipitation raster that you are working with. A precipitation raster can be either an integer or a floating-point raster, depending on how it was created and the type of data that it represents.

An integer raster contains whole numbers only and is often used to represent discrete data such as counts or classifications. On the other hand, a floating-point raster contains decimal numbers and is used to represent continuous data such as temperature or elevation.

To determine whether a precipitation raster is an integer or a floating-point raster, you can examine its properties. In most GIS software, you can view the data type of a raster by looking at its properties or metadata. If the data type is listed as "integer", then it is an integer raster. If it is listed as "float" or "double", then it is a floating-point raster.

In conclusion, whether a precipitation raster is an integer or a floating-point raster depends on its properties and the data it represents. Examining the properties of the raster will help you determine which data type it belongs to.

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The horizontal component of the velocity is 10.6 m/s and the vertical component of the velocity is 7.5 m/s.

The horizontal and vertical components of the velocity can be found using the following equations:

Vx = Vcos(θ)

Vy = Vsin(θ)

where V is the initial velocity, θ is the angle of projection, Vx is the horizontal component of the velocity, and Vy is the vertical component of the velocity.

Substituting the given values, we get:

Vx = 13 m/s × cos(35°) = 10.6 m/s

Vy = 13 m/s × sin(35°) = 7.5 m/s

The time of flight can be found using the following equation:

t = 2Vsin(θ) / g

where g is the acceleration due to gravity, which is approximately 9.8 m/s^2.

Substituting the given values, we get:

t = 2 × 13 m/s × sin(35°) / 9.8 m/s^2 ≈ 1.9 s

Therefore, the giant snowball is in the air for approximately 1.9 seconds.

The horizontal distance traveled can be found using the following equation:

d = Vx × t

Substituting the values we found earlier, we get:

d = 10.6 m/s × 1.9 s

d ≈ 20.1 m

Therefore, the giant snowball travels approximately 20.1 meters horizontally before hitting the ground.

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RS is a composition of rotation and reflection in the Euclidean plane E². The precise description of RS depends on the specific properties of the rotation R and reflection S.

In general, if R and S have the same axis or line of symmetry, the composition RS results in a translation. If R and S have intersecting lines of symmetry, RS yields a glide reflection. If R and S have perpendicular lines of symmetry, RS produces a rotation.

It is important to consider special cases, such as parallel lines of symmetry, coinciding axes, or perpendicular lines of reflection, as they may lead to different outcomes. The classification of isometries in E² involves understanding how rotations and reflections combine to create different transformations in the plane.

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The load across a battery consists of two resistors, with values of 15 Ω and 47 Ω, connected in series. 62 Ω is the equivalent resistance of the load.

A series circuit's overall resistance equals the sum of its individual resistances. The total of the individual voltage drops is equal to the voltage supplied to a series circuit. In a series circuit, the voltage drop across a resistor is exactly proportional to its size. When resistors are linked in series, they are connected one after the other.

To calculate the total overall resistance of a series of resistors connected in this manner, add the individual resistances together. This is accomplished by applying the following formula:

R = R₁ + R₂ + .... + Rₙ

In this problem, we have two resistors connected in series:

R₁ = 15 Ω

R₂ = 47 Ω

Now, the equivalent resistance of the circuit is

R = R₁ + R₂

  = 15 Ω + 47 Ω

  = 62 Ω

A series of n identical resistors of resistance R ohm have an effective resistance of X ohm when connected in series, whereas a parallel connection has an effective resistance of Y ohm. A parallel circuit's total current is the sum of the individual branch currents.

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Jennifer should carry out the following actions in the correct order to conduct the investigation:

Thus, it is significant to note that the precise order could change based on the circumstance and scope of the fire investigation.

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Answer:

true

Explanation:

PLS MAKE ME AS BRAINLIST

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{500}{65} = 7.692307... \\ \)

We have the final answer as

Hope this helps you

As the given statement is False. As a substance that heats up relatively quickly must has a high specific heat capacity.

A physical property of matter is specific heat capacity. The quantity of heat energy required to raise a substance's temperature per unit of mass is known as the specific heat capacity. It serves as an illustration of a large property. Since the scale of the system under study directly affects it. Therefore, it is the amount of heat absorbed by the substance per unit mass when its temperature is elevated. Specific Heat Capacity is measured in J/(kg K) or J/(kg °C) units.

As heating is quick when the substance have high specific heat capacity and the heating will be slow when the substance have less specific heat capacity.

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Which terms describe the purpose of antennas on devices that use radio waves?

Answer:

Explanation:

Hope it helps:)

#CarryOnLearning

Answer:

Transmit and receive (A)

Explanation:

On Edge

The acceleration of the ball spinning on a 0.880-m-long string with a constant speed of 3.75 m/s is approximately 16.1 m/s².When an object moves in a circular path with a constant speed, it experiences centripetal acceleration directed toward the center of the circle.

Acceleration is the rate at which an object's velocity changes over time. In this case, the ball is spinning on a string with a constant speed of 3.75 m/s and a length of 0.880 m. The acceleration can be determined using the formula for centripetal acceleration:

a = v² / r

where "a" is the acceleration, "v" is the velocity, and "r" is the radius or the length of the string. Plugging in the given values:

a = (3.75 m/s)² / 0.880 m

a = 14.06 m²/s² / 0.880 m

a ≈ 15.98 m²/s²

Rounding to three significant figures, the acceleration of the ball is approximately 16.1 m/s².

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Answer:

The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.

Note:

Please mark as Brainliest, or i'll go to your house and kidnapp your family, lol

(it's a joke btw)

Answer:The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.

Explanation:Formula of Net Force

FN is the force acting on a body. When the body is at rest, the net force formula is given by, FNet = Fa + Fg.

I think that's correct

The kinetic energy of a car with a mass of 1050kg and a velocity of 5m/s will be 13,125 joules or 13,125 kg⋅m2⋅s−2.

As we know, the formula to find the kinetic energy in a system is \(1/2 m v^{2}\) where m is the mass of the system and v is the given velocity at the moment. So , by putting the given data in the equation, we get :

⇒\(1/2mv^{2}\)

⇒1/2 x 1050 x 5 x 5

⇒525 x 25

⇒13,125

∴ The Kinetic energy of the car will be 13,125 Joules where joule is the SI unit of energy.

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Answer:

I guess A option is correct

160000 kgm/s is the impulse of the car. ​

J=mΔv

I= impulse

m= mass= 2000kg

Δv=  change in velocity= 80 km

J=mΔv

I= 2000kg×80 km/s

I=160000 kgm/s

The concept of impulse is used to describe how a net force affects an item (a kind of "moving force"). Impulse is denoted by the letter J.  The average net force acting on an item over time is calculated as an impulse. The force-time integral is J = Ft. The vector quantity of impulse is J = F dt (since force is a vector and time is a scalar).

Theorem of Impulse-Momentum According to the impulse-momentum theorem, an object's change in momentum equals the impulse that was delivered to it. J = ∆p The newton second is the SI unit for impulse. The kilogram meter per second is the SI unit for momentum. These momentum and impulse units are the same.

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Sure! Here are the steps for calculating the velocity and distance traveled by the car after 50 seconds :

Step 1: Calculate the velocity using the equation:

\(v = u + at\)

where:

- \(v\) is the final velocity

- \(u\) is the initial velocity (0 m/s, as the car starts from rest)

- \(a\) is the acceleration (3 m/s²)

- \(t\) is the time (50 seconds)

Substituting the values into the equation:

\(v = 0 + (3 \, \text{m/s²}) \times (50 \, \text{s})\)

Step 2: Calculate the distance traveled using the equation:

\(s = ut + \frac{1}{2}at^2\)

where:

- \(s\) is the distance traveled

- \(u\) is the initial velocity (0 m/s)

- \(a\) is the acceleration (3 m/s²)

- \(t\) is the time (50 seconds)

Substituting the values into the equation:

\(s = 0 \times (50 \, \text{s}) + \frac{1}{2} \times (3 \, \text{m/s²}) \times (50 \, \text{s})^2\)

Now, let's simplify these equations:

\(v = 3 \times 50\)

\(s = \frac{1}{2} \times 3 \times 50^2\)

Calculating the results:

\(v = 150\) m/s

\(s = 3750\) meters

Therefore, after 50 seconds, the car will have a velocity of 150 m/s and would have traveled a distance of 3750 meters.

A base substitution mutation occurs when adenine is replaced by thymine, leading to an amino acid replacement in the 6th position of the β hemoglobin chain of a point mutation, involves a single nucleotide being altered in the DNA sequence.

In the case of the β hemoglobin chain, this specific mutation can result in the development of a disease called sickle cell anemia. Sickle cell anemia is a genetic disorder that affects the shape and function of red blood cells. The amino acid replacement caused by the adenine-to-thymine substitution leads to the production of abnormal hemoglobin, called hemoglobin S (HbS), instead of the normal hemoglobin A (HbA), this change disrupts the oxygen-carrying capacity of red blood cells, causing them to become rigid, sticky, and crescent-shaped, which is the characteristic feature of sickle cell anemia.

These sickle-shaped cells can block blood vessels, leading to reduced blood flow and oxygen supply to various tissues and organs, this can result in episodes of pain, organ damage, and an increased risk of infections. Sickle cell anemia is inherited in an autosomal recessive manner, meaning that an individual must inherit two copies of the mutated gene (one from each parent) to develop the disease. A base substitution mutation occurs when adenine is replaced by thymine, leading to an amino acid replacement in the 6th position of the β hemoglobin chain of a point mutation, involves a single nucleotide being altered in the DNA sequence.

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Answer:

Hi... Your answer is impulse

Answer:

False because free-body diagram is a sketch of only the object in question and the forces acting upon it, to scale.

Answer:Main answer: The electric field inside the charged cylinder of radius R with uniform charge per unit length on its surface is zero. The electric field outside the cylinder is given by E = λ/(2πε₀r), where λ is the linear charge density, r is the distance from the center of the cylinder, and ε₀ is the electric constant.

Supporting explanation: According to Gauss's law, the electric field inside a closed surface is proportional to the enclosed charge. Since the cylinder has no charge inside it, the electric field inside the cylinder is zero. Outside the cylinder, the electric field is radial and directed away from the cylinder.  The electric field is proportional to the linear charge density on the cylinder and inversely proportional to the distance from the center of the cylinder. Therefore, the electric field outside the cylinder can be expressed as E = λ/(2πε₀r), where λ = 1 is the linear charge density.

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Acceleration in term of  f, rhob and vb. is a = F / (rhob * vb) by using different formula a = Force/ mass and m = rhob * vb

To express the acceleration a in terms of f, rhob, and vb, we can use the formula:

a = f / rhob - vb

Where f is the force applied, rhob is the density of the object, and vb is the velocity of the object. This formula allows us to calculate the acceleration based on the given parameters.
you express the acceleration (a) in terms of f, rhob, and vb. To do this, we'll use the formula for acceleration:

a = F / m

where a is acceleration, F is the net force acting on the object, and m is the mass of the object.

Given that rhob represents the density of the object and vb represents the volume, we can calculate the mass using the following formula:

m = rhob * vb

Now, we can substitute this expression for mass into the acceleration formula:

a = F / (rhob * vb)

This expression represents the acceleration (a) in terms of the net force (F), density (rhob), and volume (vb).

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Answer:

Hey!

Your answer would be option B. Light; heat...

Explanation:

In bioluminescent organisms, the energy is transformed int light energy and less then 20% of the total energy is put into Thermal Radiation!

HOPE THIS HELPS!!

According to given statement, the velocity of the second hockey puck after the collision is approximately -23 m/s.

To find the velocity of the second hockey puck after the collision, we can use the principle of conservation of momentum. According to this principle, the total momentum before the collision is equal to the total momentum after the collision.

Before the collision, the first hockey puck has a mass of 0.17 kg and is traveling to the right at 15 m/s. The second hockey puck has a mass of 0.11 kg, and we need to find its velocity after the collision.

The momentum of an object is calculated by multiplying its mass by its velocity. So, the momentum of the first hockey puck before the collision is:

Momentum of first hockey puck before collision = mass of first hockey puck x velocity of first hockey puck
Momentum of first hockey puck before collision = 0.17 kg x 15 m/s
Momentum of first hockey puck before collision = 2.55 kg·m/s

Since the first hockey puck comes to rest after the collision, its final momentum is zero:

Momentum of first hockey puck after collision = 0 kg·m/s

According to the principle of conservation of momentum, the total momentum before the collision (2.55 kg·m/s) is equal to the total momentum after the collision (0 kg·m/s). Therefore, we can set up an equation:

Total momentum before collision = Total momentum after collision

(0.17 kg x15 m/s) + (0.11 kg x velocity of second hockey puck) = 0 kg·m/s

Now we can solve for the velocity of the second hockey puck after the collision:

0.17 kg x 15 m/s + 0.11 kg x velocity of second hockey puck = 0 kg·m/s
2.55 kg·m/s + 0.11 kg x velocity of second hockey puck = 0 kg·m/s

To isolate the velocity of the second hockey puck, we can subtract 2.55 kg·m/s from both sides of the equation:

0.11 kg x velocity of second hockey puck = -2.55 kg·m/s

Then, divide both sides of the equation by 0.11 kg to solve for the velocity:

velocity of second hockey puck = -2.55 kg·m/s / 0.11 kg
velocity of second hockey puck ≈ -23.18 m/s

The velocity of the second hockey puck after the collision is approximately -23 m/s.

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When you hear the sound of the cannon fire, you are roughly 2058 metres away, assuming the sound travels in a straight line with no substantial obstructions or variations.

The speed of sound in air at 20 degrees Celsius is approximately 343 meters per second. Given that the time interval between seeing the flash and hearing the sound is 6.0 seconds, we can calculate the distance as follows:

Distance = Speed × Time

Distance = 343 m/s × 6.0 s

Distance = 2058 meters

Therefore, you are approximately 2058 meters away from the cannon when you hear the sound of its firing, assuming the sound travels in a straight line without any significant obstacles or deviations.

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The conversion from 210 Celsius to Fahrenheit is 410 degrees Fahrenheit. To convert Celsius to Fahrenheit, you can use the formula (Celsius x 9/5) + 32 = Fahrenheit.

The equation F = 9/5C + 32 relates temperature measured in degrees Celsius (C) to degrees Fahrenheit (F). The formula is used to convert temperatures from Celsius to Fahrenheit , and vice versa. To use the formula, you simply plug in the known temperature in Celsius (or Fahrenheit), and then solve for the unknown temperature in Fahrenheit (or Celsius).

To convert Celsius to Fahrenheit, you would use the formula F = 9/5C + 32, where C is the temperature in Celsius and F is the temperature in Fahrenheit. Thus, 210 Celsius to Fahrenheit is 410 degrees Fahrenheit.

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