what is power?

a- the magnitude of a force needed to move an object

b- how much work can be done in a given time

c- the distance over time that an object moves

d- the energy needed to create work

Answer:

B

Explanation:

on edge

The illustration with a vector pointed right going through an opening in a boundary and turning into a transverse wave on the other side demonstrates the phenomenon of absorption, so, option B is correct.

Absorption, in wave motion, is the process by which a wave's energy is transferred to matter when the wave travels through it. The energy of an electromagnetic, acoustic, or other wave is related to the square of its amplitude, which is the maximum displacement or movement of a point on the wave.

The amplitude of a wave continuously diminishes as it travels through a substance. The medium is described as being transparent to a specific type of radiation if just a tiny portion of the energy is absorbed, whereas it is described as opaque if all the energy is lost.

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Answer:

0

Explanation:

all of the movement and opposite movement are the same

Answer:

Wetlands reduce flooding and erosion by filtering water.

Explanation:

Answer:

Wetlands reduce flooding and erosion by filtering water.

Explanation:

Answer:

The induced current in the loop is 1.2 A

Explanation:

Given;

length of the wire, L = 24 cm = 0.24 m

resistance of the wire, R = 0.14 Ω.

magnetic field strength, B = 0.55 T

time, t = 15 ms = 15 x 10⁻³ s

Circumference of a circle is given as;

L = 2πr

0.24 = 2πr

r = 0.24 / 2π

r = 0.0382 m

Area of a loop is given as;

A = πr²

A = π (0.0382)²

A = 0.004585 m²

Induced emf is given as;

\(emf = -\frac{\delta \phi}{dt}\)

Ф = ΔB x A

Ф = ( 0 - 0.55 T) x 0.004585 m²

Ф = -0.002522 T.m²

\(emf = - (\frac{-0.002522}{15*10^{-3}} )\\\\emf = 0.168 \ V\)

According to ohm's law;

V = IR

Where;

I is current

The induced current in the loop is calculated as;

I = V / R

I = 0.168 / 0.14

I = 1.2 A

Therefore, the induced current in the loop is 1.2 A

The equation is;

213/83 Bi ----> 209/81Tl + 4/2 He

In this decay process, the unstable Bi-213 nucleus emits an alpha particle, which consists of two protons and two neutrons (also known as a helium-4 nucleus).

As a result of this emission, the daughter nucleus Tl-209 is formed with a decrease of four in the atomic number and a decrease of eight in the mass number. The alpha particle, He-4, has an atomic number of 2 and a mass number of 4, and is emitted with high kinetic energy.

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Answer:

2.22m/s to the left

Explanation:

Given parameters:

Initial position = +125m

Final position  = -75m

Motion time  = 90s

Unknown:

Velocity of the steel ball  = ?

Solution:

The velocity of the steel ball is given as the displacement divided by the time;

   Velocity  = \(\frac{displacement}{time}\)

The net displacement of the ball  = 125- (-75) = 200m to the left

Input the parameters and solve for the velocity;

     Velocity  = \(\frac{200}{90}\)   = 2.22m/s to the left

Answer:

-7/19

Explanation:

Answer: \(0.00024\ m/s^2\)

Explanation:

Given

Radius of flywheel is \(r=0.4\ mm\)

Angular acceleration \(\alpha=0.6\ rad/s^2\)

For no change in radius, tangential acceleration is  given as

\(\Rightarrow a_t=a\lpha \times r\)

Insert the values

\(\Rightarrow a_t=0.6\times 0.4\times 10^{-3}\ m/s^2\\\Rightarrow a_t=2.4\times 10^{-4}\ m/s^2\ \text{or}\ 0.00024\ m/s^2\)

Answer:

i try B

Explanation:

Answer:

A high EQ (emotional intelligence)

In today's transitioning workplace, having a high EQ is the most important trait of a good boss. Bosses must be able to discern between their own personal beliefs and the thoughts and beliefs of others, and other generations (boomers, Gen X, xennials, millennials and now Gen Z).

Explanation:

hope it helps you

The momentum of the monkey of mass 5 kg is 25 kgm/s.

Momentum is the product of mass and velocity.

To calculate the momentum of the monkey, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the momentum of the monkey is 25 kgm/s.

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Complete question: A 5kg monkey is running with a velocity of 5 m/s to the right. Find the momentum of the monkey

To match the science terms with their definitions, I'll provide you with a list of terms and their corresponding definitions. Please note that since you didn't provide the specific terms you need, I will provide some common science terms as examples:

1. Atom: The smallest unit of a chemical element that retains the properties of that element.

2. Molecule: A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

3. Photosynthesis: The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll pigments, converting light energy into chemical energy.

4. Gravity: The force that attracts two bodies toward each other, proportional to their masses and the distance between them.

5. Evaporation: The process by which a liquid changes into a vapor, usually as it is heated or its pressure is reduced.

6. Ecosystem: A biological community of interacting organisms and their physical environment, including both living (biotic) and nonliving (abiotic) components.

7. DNA: Deoxyribonucleic acid, the hereditary material in humans and almost all other organisms that carries genetic information in cells.

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Answer:

no

Explanation:

This downward force and acceleration results in a downward displacement from the position that the object would be if there were no gravity. The force of gravity does not affect the horizontal component of motion; a projectile maintains a constant horizontal velocity since there are no horizontal forces acting upon it.

The advantage that the runner nearest the gun in the 100-meter dash might have is known as  the "reaction time advantage."

A reaction time advantage is known to allow runners in a race  to be agile and efficient when it comes to responding to stimuli in situations like driving, playing sports, or even having a conversation.

It is believed that the runner closest to the gun has a shorter distance for the sound wave to travel which might result in a slightly quicker reaction time in comparison to the other runners.

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The evaluation of the capacitor (in series) network is as follows;

Part A

Q = 3.2 μC

Part B

Q₁ = 3.2 μC

Part C

Q₂ = 3.2 μC

Part D

U = 76.8 μJ

Part E

U₁ = 34 2/15 μJ

Part F

U₂ = 53 1/3 μJ

Part G

V₁ = 21 1/3 V

Part H

V₂ = 26 2/3 V

A capacitor consists of pairs of conductors separated by insulators. Capacitors are used to store electric charge.

The specified parameters are;

The voltage across ab = 48 V

The capacitance of the first capacitor, C₁ = 150 nF

Capacitance of the second capacitor, C₂ = 120 nF

Part A

The total charge in a capacitor network can be found as follows;

\(C_{eq} = \left(\dfrac{1}{150} + \dfrac{1}{120} \right)^{-1} nF = \left(\dfrac{3}{200} \right)^{-1}nF\)

\(C_{eq} =\left(\dfrac{3}{200} \right)^{-1}nF=66\frac{2}{3} \, nF\)

\(Q_{eq} = C_{eq}\times V_{ab}\)

Therefore;

\(Q_{eq}\) = 66 2/3 nF × 48 V = 3,200 × 10⁻⁹ C = 3.2 μC

Part B

The charge in the 150 nF capacitor is obtained from the formula for the charge in a capacitor; Q = C × V as follows;

Q = C₁V₁ = C₂V₂

The charge in the capacitors, C₁ and C₂ are the same as the total charge of 3.2 μC

The charge, Q₁ on the 150 nF capacitor, C₁ is therefore, 3.2 nC

Part C

The capacitors, C₁ and C₂ are in series, therefore, the charge in each capacitor is equivalent to the charge in the circuit, which is 3.2 μC.

Therefore, the charge, Q₂, in the 120 nF capacitor, C₂ is 3.2 μC

Q₂ = 3.2 μF

Part D

The total energy stored in the network can be obtained using the formula;

U = (1/2)·C·V²

Where;

U = The energy in the capacitor

C = The equivalent capacitance of the network = 66 2/3 nF

V = The voltage

Therefore;

\(U = \dfrac{1}{2} \times C_{eq}\times V^2\)

\(U = \dfrac{1}{2} \times 66\frac{2}{3} \times 10^{-9}\times 48^2 = 76.8\)

Part E

The energy stored in the 150 nF capacitor is found as follows;

\(Q_{eq}\) = Q₁ = C₁ × V₁

V₁ = \(Q_{eq}\) ÷ C₁

Therefore;

V₁ = 3.2 μC ÷ 150 nF = \(21\frac{1}{3}\) V

U₁ = 0.5×C₁×V₁²

Part F

The energy stored in the 120 nF capacitor, U₂, can be found as follows;

V₂ = 3.2 μC ÷ 120 nF = \(26\frac{2}{3}\) V

U₂ = 0.5 × 150 nF × \(\left(26\frac{2}{3} \, V\right)^2\) = \(53\frac{1}{3}\, \mathrm{ \mu J}\)

Part G;

The potential difference across the 150 nF, obtained in Part E, is 21 1/3 V

Part H

The potential difference across the 120 nF, obtained in part F, is 26 2/3 V

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The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.

The p-waves travel with a constant velocity of 7 km/s

The time can be calculated by using the formula

t = d / v

where

T1 =  10:05 a.m

d is the distance they take to travel from the epicenter

v is the speed of the p-waves

On average, the speed of p-waves is

v = 7 km/s

d = 5600 km (given)

Substituting the values in the formula;

t = d / v

t = 5600 ÷ 7

t = 800 seconds

Converting into minutes,

t = 800 ÷ 60

t = 13.3

≈ 13 mins

T1 -  13 mins = T2

10:05 - 13 mins = 9.52 am

It means the earthquake occurred prior 13 minutes, that is at 9.52 am.

Therefore, the earthquake occurred at 9.52 am.

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1. Total momentum of an isolated system before collision is always equal to total momentum after collision is called conservation of momentum.

2. Newton's third law explains how momentum is conserved in all interaction between objects.

3. Force is an unopposed interaction between two or more bodies that apply the shift in the objects state of motion. The action and reaction are two interacting forces that we called as Newton's third law of motion. There are two forces acting on two interacting objects in any interaction.

4. Momentum is a vector quantity and has the same direction as velocity. It is the product of mass (a scalar quantity) and velocity (a vector quantity).

5. To find total momentum of the system , add their individual momentums together. Calculate momentum for each object by using formula P=mv, where P is momentum, m is mass, v is velocity.

6. If the objects are travelling in opposite direction, then the overall momentum will be zero. They have same mass and velocity, when their momentum vectors add up to exactly zero when added together.

7. Closed system in which the exchange of only energy with its surroundings takes place. An isolated system in which no exchange of matter or energy takes place.

8. The internal forces are considered when we examine interaction between two objects in a closed and isolated system because these forces cause momentum of the system to be transferred between one object to another.

9. Before the push-off, the total initial momentum is zero. The total momentum after the push-off should also be zero.

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Any wave in which the motion of the medium's particles is parallel to the wave's direction is referred to as a longitudinal wave.

Imagine that a slinky is stretched out horizontally across the classroom, and that the left end of the slinky receives a pulse from the left and right vibrations of the first coil. From left to right, energy will start to move through the slinky. The individual coils of the medium will be shifted left and right as the energy moves from left to right. The medium's particles in this instance travel in a direction parallel to the pulse's. A longitudinal wave is this kind of wave. Particle motion is consistently parallel to wave motion in longitudinal waves.

A well-known example of a longitudinal wave is a sound wave moving through air.

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Answer:

velocity ratio

mechanical advantage

Relative density

When a mass (m) that orbits the earth in a circular path of radius 7480 km (about 1100 km) above the surface of the earth), the period of revolution of the given satellite is approximately 8207 seconds or 2.28 hours.

The period of revolution of a satellite with mass (m) that orbits the earth in a circular path of radius 7480 km (about 1100 km) above the surface of the earth) can be determined by using Kepler's third law which relates the period of revolution of a satellite to the average radius of its orbit.

Kepler's third law states that the square of the period of revolution of a satellite is proportional to the cube of the average radius of its orbit.

Mathematically, the law can be expressed as: T² = (4π² / GM) × R³Where T is the period of revolution, G is the gravitational constant, M is the mass of the earth, and R is the average radius of the orbit of the satellite.

To find the period of revolution of the given satellite, we can substitute the given values in the equation: R = 7480 km + 6370 km = 13850 kmM = 5.97 × 10²⁴ kgG = 6.67 × 10⁻¹¹ Nm²/kg²T² = (4π² / GM) × R³T² = (4π² / (6.67 × 10⁻¹¹ × 5.97 × 10²⁴)) × (13850 × 10³)³T² = 6.7182 × 10¹⁴ seconds²

Taking the square root of both sides, we get:T = 8.2079 × 10³ seconds

Therefore, the period of revolution of the given satellite is approximately 8207 seconds or 2.28 hours.

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Answer:

66

Explanation:

Information technology has greatly impacted the economy, leading to increased productivity, efficiency, and innovation across industries.

The widespread adoption of information technology in the business world has led to a significant transformation in the way companies operate. Through the use of computers, software, and other digital tools, businesses are now able to streamline their operations, automate processes, and access vast amounts of data that can inform decision-making.

This has resulted in increased productivity, efficiency, and cost savings for companies. Additionally, information technology has facilitated the rise of new industries, such as e-commerce and digital marketing, while also enabling existing industries to adapt and innovate in response to changing market conditions.

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--The complete question is, How has information technology impacted the economy?--

Answer:

V₂ = 0.4432

Explanation:

The normalize procedure is widely used in science, in this case we are going to normalize to the voltage value that exists 4 cm away

           Vₙ= V_{measured} / V₀

where the voltage at the desired distance is V₀ = 185 mV = 0.185 V

the normalized voltage are

forr x = 4 cm

            V₁ = 185/185

            V₁ = 1

for x = 6.2 cm

             V₂ = 82/185

             V₂ = 0.4432

Answer:

Temperature

Explanation:

Answer:

Gravity

Explanation:

Gravity has nothing to do with weather. Temperature means hot or cold, water is rain and thunder, and wind is if it's in the winter or something like that

The pressure after the temperature has risen to 40.0 °C, assuming that there are no appreciable leaks or changes in volume is 4.35×10⁵ Pa

From the question given above, the following data were obtained:

The pressure the temperature has risen to 40 °C can be obtained as follow:

P₁V₁ / T₁ = P₂V₂ / T₂

Volume = contant

P₁ / T₁ = P₂ / T₂

4.00×10⁵ / 288 = P₂ / 313

Cross multiply

P₂ × 288 = 4.00×10⁵ × 313

Divide both sides by 288

P₂ = (4.00×10⁵ × 313) / 288

P₂ = 4.35×10⁵ Pa

Thus, the pressure at 40 °C is 4.35×10⁵ Pa

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Time taken by the ball to reach the ground is 1.8s.

When an object is released from rest in free air considering no friction, the motion is depend only on the acceleration due to gravity, g.

A ball is thrown directly downward with an initial speed of 7.30 m/s, from a height of 29.0 m

Using the second equation of motion,

s = ut + 1/2 at²

Plug the values, we get

29 = 7.3t + 1/2 x9.81t²

4.905t² + 7.3t -29 =0

t =1.79871 or −3.28699

As time can't be negative, time taken to strike the ground is  approximately 1.8 s.

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Answer:

where u put it last time or retrace ur steps to where u last put it

Answer:

The coefficient of static friction between the puppy and the floor is 0.7273.

Explanation:

The horizontal force applied to move the puppy from a steady state has to be greater than the force of static friction, after it is moving the force needs to be equal to be greater than the force of dynamic friction in order to maintain its movement. The force of static friction is given by:

\(F_s = \mu_s*N\)

Where \(F_s\) is the static friction force, \(\mu_s\) is the coefficient of static friction and \(N\) is the normal force. Since there's no angle on the flor the normal force is equal to the weight of the puppy, therefore, \(N = 110\text{ N}\), to make the puppy moving we need to use a force of 80 N, therefore, \(F_s = 80 \text{ N}\), so we can solve for the coefficient as shown below:

\(80 = \mu_s*110\\\mu_s = \frac{80}{110} = 0.7273\\\)

The coefficient of static friction between the puppy and the floor is 0.7273.

Answer:100

Explanation: