in this seismogram, the -waves are seen to be the first to arrive because they are the fastest, while -waves arrive second. the arrive last and are the most damaging. they get their name from the fact that their path follows the earth's surface rather than traveling through the earth interior. hint: blank and blank are single capital letters.

Dopamine is key for : pleasure.  Dopamine lets you feel pleasure, satisfaction and also motivation. When one feels good that they have achieved something, then it is because one has surge of dopamine in the brain.

Dopamine is key for pleasure, reinforcement, and motivation and is commonly known as the "reward molecule". It is responsible for the feelings of pleasure and satisfaction that we experience after completing  rewarding activity, like eating food or engaging in social interaction.

Dopamine is also involved in reinforcement, which is the process by which brains learn to associate specific actions or behaviors with rewards.

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The  concentration of the solution will be 0.25M and the concentration of the  

sodium Hydroxide is 2.5 M .

A branch of chemistry deals with the application of  the laws of definite proportions and of the conservation of mass and energy to chemical activity. The quantitative relationship between constituent in a chemical substance.  

We have given here,

Moles of sodium chloride  =  0.25moles

Let us assume the the volume of  the solution is 1 L.

Molarity = 0.25/

Molarity will be 0.25 M

The mass of sodium Hydroxide is 20g and the molar mass is 40g ,

and the Volume will be 0.2L

Molarity = 20/ 40×0.2

Molarity = 2.5 mol / L

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Answer:

(1.) (A.) wight

Explanation:

Answer:

mass

step by step Explanation:

1. A.

Answer:

The characteristics that determine how easily two substances change temperature are:

The volume and density of the substances and the amount of time they are in contact do not directly affect how easily they change temperature.

Explanation:

Answer:

A reducing agent accepts electrons

Answer:

May be egg shaped

Has no new stars being formed.

Has almost no gas or dust between stars.

Explanation:

Elliptical galaxy is the collection of many stars which are bounded together gravitationally, which is smooth and ellipsoidal and shape and the appearance is featureless.

Elliptical galaxy is ovoid or spherical masses of stars.

It is found in galaxy clusters and compact galaxies.

It has no gas or dust between stars which result in low rates of star formation.

It is formed When two spirals collide, they lose their familiar shape, morphing into the less-structured elliptical galaxies.

Elliptical galaxy is made of old stars and have no gas and dust.

An example is elliptical galaxy m60 which shines brightly and is egg shaped.

Answer:

false

Explanation:

I had the same answer for this question on my schoolwork

:) HOPE THIS HELPS

Answer:

It is false

Explanation:

I just took the test, sorry for no other explanation. Have a fabulous day!

Answer:

\(976562.5\ Joules\)

Explanation:

\(We\ are\ given:\\The\ mass\ of\ the\ missile=125\ kg\\The\ velocity\ of\ the\ missile=125\ m/s\\Hence,\\As\ we\ know\ that,\\Kinetic\ energy\ possessed\ by\ an\ object\ with\ mass\ m\ moving\\ with\ a\ velocity\ v:\\E_k=\frac{1}{2}mv^2\\Here,\\The\ Kinetic\ Energy\ possessed\ by\ the\ missile=\frac{1}{2}*125*(125)^2=976562.5\ Joules\)

The engine thermal efficiency is 50%

The engine does 200 joules of work per cycle

It exhausts 400 j

The thermal efficiency can be calculated as follows

= 200/400

= 0.5 × 100

= 50 %

Hence the engine thermal efficiency is 50%

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Answer: A. I,II and III

Explanation:

Let's describe the situation in a simplified way.

First remember, in ambient temperature, the candle is in solid form.

As you light the candle, the region of the candle near the flame suffers an increase in energy, caused by the heat of the flame. As you know, when we give enough heat to a solid, it will change of phase, from solid to liquid, and this is why the candle melts. Now, this change of phase is due to the heat of the flame, so when the liquid phase is away from the flame (because the flame went out, or because the liquid wax fell and now is far from the flame) the wax will cool down, and return to the solid phase.

Then we must have:

Presence of heat to go from solid to liquid.

Absence of heat to go from liquid to solid.

And we have a flame, then we must have presence of oxygen.

Then the correct option is:

A. I,II and III

Answer: well we all orbit the sun all the planets do so the

SuN

Explanation: two words common sense

1.Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)

2.The angular velocity (ω) of the body is given as 3 radians per second.

3.Without the position of point P given, it is not possible to write the position vector of P.

4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule.

5.Position vector of point A: (4, 1, 1)

Position vector of point B: (2, -1, 0)

The direction vector BA = (-2, -2, -1)

1.To determine the unit vector pointing in the direction BA, we subtract the coordinates of point B from the coordinates of point A and normalize the resulting vector.

The direction vector BA is given by:

BA = (4 - 2, 1 - (-1), 1 - 0) = (2, 2, 1)

To obtain the unit vector in the direction of BA, we divide the direction vector by its magnitude:

|BA| = √(2^2 + 2^2 + 1^2) = √(4 + 4 + 1) = √9 = 3

Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)

2.The angular velocity (ω) of the body is given as 3 radians per second.

3.Without the position of point P given, it is not possible to write the position vector of P. Please provide the position of point P to proceed with the calculation.

4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule. In a left-handed coordinate system, if you curl the fingers of your left hand in the direction of rotation, your thumb will point in the direction of the rotation axis. It is the opposite direction to a right-handed rotation.

5.The position vectors of points A and B are:

Position vector of point A: (4, 1, 1)

Position vector of point B: (2, -1, 0)

The direction vector BA can be obtained by subtracting the coordinates of point A from the coordinates of point B:

BA = (2 - 4, -1 - 1, 0 - 1) = (-2, -2, -1)

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At maximum height, velocity is zero and kinetic energy will be zero.

K.E(A) = 0

P.E(A) = mgh = 200 x 9.8 x 30 = 58,800 J

K.E(B) = P.E(A) - P.E(B)

K.E(B) = 58,800 J - (200 x 9.8 x 25)

K.E(B) = 58,800 J - 49,000 J

K.E(B) = 9,800 J

K.E = ¹/₂mv²

v² = 2K.E/m

v² = (2 x 9800)/(200)

v² = 98

v = √98

v = 9.9 m/s

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Independent variable - the food here is independent variable.

The dogs' diets, which include both dog food and their regular meals, are the dependent variable.

50 dogs in the experimental group are being treated with superior dog food to lower their obesity.

The other dogs who are not given the new food make up the control group. or who keep eating their regular diet.

Anything that is kept constant or constrained in a research study is referred to be a control variable. Despite not being relevant to the study's objectives, this variable is controlled since it could have an impact on the results.

Variables can be controlled variable either directly by maintaining their value throughout a research (for example, by maintaining a constant room temperature in an experiment) or indirectly by using techniques like randomization or statistical control (e.g., to account for participant characteristics like age in statistical tests).

During an experiment, a controlled variable is one that the researcher maintains constant (controls). It is sometimes referred to as a control or a constant variable. Although the control variable is neither the independent variable nor the dependent variable in an experiment, it is nonetheless significant since it has the potential to influence the outcomes. It is different from a control group.

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Answer:

the anwser is 480 N for the answer hope this helped

The acceleration of the person of 60 kg jumping with a velocity of 2 m/s in 0.25 seconds is 8 m/s². Then the force exerted on the feet is 480 N.

Force is an external agent acting on a body, to change its motion. Force is a vector quantity. Hence, it is characterized by a direction and magnitude. There are various kinds of forces such as gravitational force, magnetic force, frictional force etc.

According to Newton's second law of motion, force is the product of mass and acceleration of the body. The acceleration of a moving object is the rate of change in velocity.

given v = 2 m/s

time t = 0.25 s

then a = v/t = 2/0.25 = 8 m/s²

then, force F = m a

F = 60 kg × 8 m/s² = 480 N.

Therefore, the force exerted on his feet is 480 N.

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The charge on the 6 μF capacitor is 10.29 μC.

What is the charge of capacitor?

The charge of a capacitor is the amount of electric charge stored on its plates due to the potential difference (voltage) between them. The charge is directly proportional to the capacitance and the voltage across the capacitor, according to the formula Q = CV, where Q is the charge, C is the capacitance, and V is the voltage.

First, we can calculate the equivalent capacitance of the two capacitors connected in parallel:

\(C_{parallel}\)= C1 + C2 = 6 μF + 8 μF = 14 μF

Next, we can calculate the total equivalent capacitance of the circuit, which is the capacitance of the parallel combination in series with the 14 μF capacitor:

1/\(C_{total}\) = 1/ \(C_{parallel}\) + 1/C3

1/\(C_{total}\) = 1/14 μF + 1/14 μF

1/\(C_{total}\) = 1/7 μF

\(C_{total}\) = 7 μF

Using the formula Q = CV, we can calculate the charge on the 6 μF capacitor:

Q = C × V = 6 μF × 12 V / 7 μF = 10.29 μC

Therefore, the charge on the 6 μF capacitor is 10.29 μC.

What is capacitance?

Capacitance is the ability of a capacitor to store electric charge when a voltage is applied across its terminals. It is defined as the ratio of the electric charge stored in the capacitor to the voltage applied to it, and its unit is the farad (F). A capacitor with a high capacitance value can store more charge for a given voltage than a capacitor with a lower capacitance value.

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Since no work is done, the power exerted is zero. Therefore, the man exerts no power on the wall.

In physics, force is defined as any action that can change the motion of an object or cause an object to accelerate. Force is a vector quantity, meaning that it has both magnitude (size or strength) and direction. The unit of force in the International System of Units (SI) is the Newton (N), which is defined as the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared (1 N = 1 kg × 1 m/s^2). Force can be measured using a variety of instruments, such as spring scales, strain gauges, or force plates. Some common types of forces include gravitational force, electromagnetic force, frictional force, and normal force. The study of forces and their effects on the motion of objects is known as mechanics and is a fundamental concept in physics.

Here,

a. The man does not do any work on the wall because the wall does not move. Work is only done when there is a displacement in the direction of the force applied.

b. Since no work is done, no energy is used or transferred.

c. The power exerted by the man can be calculated using the formula:

Power = Work / Time

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Answer:

Explanation:

To find the current flowing in the circuit, we can use Ohm's Law and Kirchhoff's circuit laws.

Ohm's Law states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R):

I = V / R

In this case, the voltage (V) is the electromotive force (EMF) of the current source, which is 14 V. The total resistance (R) in the circuit is the sum of the internal resistance (r) and the resistances of the two resistors (R1 and R2):

R = r + R1 + R2

Given that the internal resistance (r) is 1Ω and each resistor (R1 and R2) has a resistance of 3Ω, we can substitute these values into the equation:

R = 1Ω + 3Ω + 3Ω = 7Ω

Now we can calculate the current (I):

I = V / R = 14 V / 7Ω = 2 A

Therefore, the current flowing in the circuit is 2 Amperes.

Explanation:

An object's weight depends on the pull of the gravitating object but the object's mass is independent of the gravity.

we can't give a specific direction for the final momentum.

What is momentum?

Momentum is a physical quantity that describes the motion of an object. It is defined as the product of an object's mass and its velocity. Mathematically, momentum is expressed as:

Momentum (p) = mass (m) x velocity (v)

p = m x v

To solve this problem, we need to apply the law of conservation of momentum, which states that the total momentum of a system remains constant if no external forces act on it.

The initial total momentum of the system is:

p_initial = p_white + p_gray = 25 kg m/s - 30 kg m/s = -5 kg m/s

Since there are no external forces acting on the system, the total momentum of the system after the collision must also be -5 kg m/s. Therefore, the final momentum of the system is:

p_final = -5 kg m/s

The direction of the final momentum can be found by looking at the directions of the initial momenta. Since the white clay has positive momentum and the gray clay has negative momentum, we can say that the white clay is moving to the right and the gray clay is moving to the left before the collision.

During the collision, the two clays will exert forces on each other, causing them to change direction and possibly even break apart. Without more information about the collision, we can't say for sure what the direction of the final momentum will be. It could be to the left or to the right, or some combination of the two. Therefore, we can't give a specific direction for the final momentum.

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A spring has an energy of 10.0 joules when stretched 0.200 metres from its equilibrium point.

The formula for calculating the force a spring produces is Fs=kx F s = k x where k is indeed an experimentally determined number known as the spring constant that indicates the force the spring exerts per metre of stretch or compression or x is indeed the distance the spring is compressed or stretched from its initial position.

|v| =(x2 + y2) is the formula to calculate the magnitude of the a vector (or two dimensions) v = (x, y). The Pythagorean theorem serves as the basis for this formula.

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A 25 kg block is pulled with an applied force of 200 N across a horizontal surface. The block experiences a frictional force of 75 N. The Net Force acting on the block is 125 N. The acceleration of the block is 5 m/s².

The term net force is defined as  the sum of all the forces acting on an object. Net force can speed up a mass. Some other force acts on a body either at rest or in motion. The net force is a term utilized in a system when there is a significant number of forces.

A. a Free Body Diagram for the block, including all forces acting on the block is attach in image below.

B.Net force acting on the block

F = 200 - 75

= 125 N

F = 125 N

C. Acceleration of the block

Ma = 125

a = 125/ 25

a = 5 m/s²

Thus, the Net Force acting on the block is 125 N. The acceleration of the block is 5 m/s².

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Answer:

The answer is "\(5.53 \ \frac{m}{s}\)"

Explanation:

apply the formula for calculating the average velocity to the relative air

\(V_{PG} =V_{PA}+V_{AG}\)

\(\Rightarrow V_{PA} = V_{PG} -V_{AG}\)

Given value:

\(V_{AG} = -2 \ \frac{m}{s}\)

\(V_{PG} =3.53\)

\(\Rightarrow V_{PA} = 3.53 - (-2) \\\\\Rightarrow V_{PA} = 3.53 +2 \\\\\Rightarrow V_{PA} = 5.53 \\\\\)

The final answer is "\(5.53 \ \frac{m}{s}\)" in the south-east direction.

Answer:It is a system that supports the body, helps with movement, protects internal organs, and serves as a site for

blood cell formation.

Explanation: reason it is a system of which supports the body weight and holds your organs in without such a system theyd fly around damaging them due to such the answer is exactly as said it supports the body weight the movement of your legs and holds you up and it creates blood cells from your bome maro

Answer: The answer is: It is a system that supports the body, helps with movement, protects internal organs, and serves as a site for

blood cell formation.

Explanation: I have my ways ;>

The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.

In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.

When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.

For example, if the answer is 12.345, we would round it to 12.3.

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Answer:

Let I and j be the unit vector along x and y axis respectively.

Electric field at origin is given by

E= kq1/r1^2 i + kq2/r2^2j

= 9*10^9*1.6*10^-19*/10^-6*(2i+ j)

= (2.88i + 1.44j)*10^-3 N/C

Force on charge= qE= 3*10^-19*1.6*(2.88i +1. 44 j) *10^-3

F= (1.382 i + 0.691 j) *10^-21

 Goodluck

Explanation:

Birds underwent significant diversification and adaptation during the Mesozoic epoch, allowing them to develop into effective and adaptable flyers.

The wings of S. crossirostris, also referred to as the "delicate-winged pterosaur," were constructed of a delicate flap of skin called the patagium. This delicate membrane was prone to breaking, unlike the stiff feathers of birds.

In terms of flight prowess and ecological success, S. crossirostris would not have been able to compete with birds due to the restrictions imposed by its delicate wing structure.

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