Hello:) how to do 3?:)

Answer:

Explanation:

Acceleration = (final velocity - initial velocity)  / time

Acceleration of W = ( 91 - 60 ) / 5.38 = 5.76 m /s²

Acceleration of X  = ( 68 - 39  ) / 5.38 = 5.39  m /s²

Acceleration of Y = ( 70 - 42 ) / 5.38 = 5.20 m /s²

Acceleration of W = ( 94 - 65 ) / 5.38 = 5.39  m /s²

So Train Y is the smallest acceleration.

Answer:

Inertia of an object depends on the mass of the object.

Explanation:

Inertia is the property that is possessed by a matter( anything that has weight and occupies space) that enables it to be at rest or in a state of continuous uniform motion.

The inertial of a body is the resistance that is present in the body, that forces acting on the body have to overcome for the body to move or continue moving.

The inertia of a body depends on the mass of such a body, which is directly proportional. The mass of an object is the measure of inertia,  the bigger the mass of an object the bigger the inertia.

Therefore the Inertia of an object is largely dependent on the mass of such an object.

Answer:

conduction

Explanation:

Answer:

[tex] \sf B = conduction[/tex]

Answer:

A

Explanation:

Answer:its a

Explanation:

Answer:

13108.3N

Explanation:

Given parameters:

Acceleration = 0.785m/s²

Net force  = 1050N

Unknown:

Normal force acting on car  = ?

Solution:

The normal force on this car is the weight of the car;

   Normal force  = mg

where m is the mass of the car

           g is the acceleration due to gravity = 9.8m/s²

Now solve for the mass;

             Net force  = mass x acceleration

                1050  = mass x 0.785

                 mass  = [tex]\frac{1050}{0.785}[/tex]   = 1337.6kg

So,

     Normal force  = 1337.6kg x 9.8m/s² = 13108.3N

13108 works as well for acellus

Complete Question

The complete question is shown on the first uploaded image

Answer:

The derivative is  [tex]v(r)' =  \sqrt{\frac{D}{r} }[/tex]

The correct option is option 1

Explanation:

From  the question we are told that

   The equation of the speed of the wave of invasion is  [tex]v(r)  = 2 \sqrt{Dr}[/tex]

=>  [tex]v(r)  = 2 (Dr)^{\frac{1}{2} }[/tex]

=>  [tex]v(r)  = 2 * D^{\frac{1}{2} } r^{\frac{1}{2} }[/tex]

    Here r is the reproductive rate and the D is the parameter qualifying dispersal

Generally the derivative of this speed is mathematically represented as

         [tex]v(r)' = \frac{2}{2}  *  D^{\frac{1}{2} } *  r^{-\frac{1}{2} }[/tex]

=>     [tex]v(r)' =  \sqrt{\frac{D}{r} }[/tex]  

This derivative of the speed represents the rate of change of the invasive speed with respect to the the reproductive rate of an individual

Explanation:

here u go..................................

The volume of the gasoline needed for the gang to successfully make it to the new destination is 340.02 liters.

"Your question is not complete, it seems to be missing to following information";

the new destination of the gang is 2695 miles

The given parameters;

1 gallon = 3.785 liters

The rate of gasoline consumption in miles per liter is calculated as;

[tex]v = \frac{30 \ miles}{gallon } \times \frac{1 \ gallon}{3.785 \ liters} = 7.926 \ miles/liter[/tex]

The volume of the gasoline needed for the gang to successfully make it to the new destination is calculated as;

[tex]volume \ of \ gasoline = \frac{2695 \ miles}{7.926 \ miles/liter} = 340.02 \ liters[/tex]

Thus, the volume of the gasoline needed for the gang to successfully make it to the new destination is 340.02 liters.

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If the desk doesn't move, then it's not accelerating.

If it's not accelerating, then the net force on it is zero.

If the net force on it is zero, then any forces on it are balanced.

If there are only two forces on it and they're balanced, then they have equal strengths, and they point in opposite directions.

So the friction on the desk must be equal to your 245N .

Answer:

C.

Explanation:

The only reason a space station would spin on it's axis would be to provide an artificial gravity.

Answer:

oi

Explanation:

Answer: It’s 98,000

Explanation: Just did it on apex

Answer:

Final velocity, V = 10.6 m/s

Explanation:

Given the following data;

Initial velocity, U = 3.05m/s

Acceleration, a = 2.82m/s²

Displacement, S = 18.4m

To find the final velocity of the object, we would use the third equation of motion;

[tex] V^{2} = U^{2} + 2aS [/tex]

Where;

Substituting the values into the equation, we have;

[tex] V^{2} = 3.05^{2} + 2*2.82*18.4[/tex]

[tex] V^{2} = 9.3025 + 103.776[/tex]

[tex] V^{2} = 113.0785[/tex]

Taking the square root, we have;

V = 10.6 m/s

Therefore, the final velocity of the object is 10.6m/s.

Answer:

C.) Velocity

Explanation:

I took the test! (im in k12)   :)

Answer:the answer is 1.5

Explanation: I know bc I just had that question on a test.

Answer:

situational irony

Explanation:

Based on the scenario being described, this seems to be an example of situational irony. That is because the irony in this scenario is that Tim's most popular and world-renown cooking creations are made of meat but Tim is a vegan and does not consume meat, which all revolves around the situation that Tim is in. Since he can't enjoy the meals with his fans because he does not eat the ingredients in his own creation. Therefore, being specific to the situation that Tim has created.

Your answer would be option 3/C

Heat is due to the motion of molecules.

Answer:

The tractor applies 1,748.418 N to the plow.

Explanation:

Net Force

According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:

Fn=m.a

If the acceleration is zero, then the net force is also zero. That means all forces acting on the mass are balanced.

The tractor drags the m=313 Kg plow at a constant speed, thus the acceleration is zero and so is the net force.

The horizontal forces acting on the plow are:

Since both forces are balanced, then:

Ft=Fr

The friction force is calculated as:

[tex]Fr=\mu \cdot N[/tex]

Where [tex]\mu[/tex] is the coefficient of friction between the plow and the ground and N is the normal force. In the situation described, the normal force is equal to the weight of the plow:

[tex]N=W=m.g=313*9.8=3,067.4[/tex]

The normal force is N=3,067.4 N

The friction force is now calculated:

[tex]Fr=0.579 \cdot 3,067.4\ N[/tex]

[tex]Fr=1,748.418\ N[/tex]

Thus, the tractor applies 1,748.418 N to the plow.

The force of gravity depends on the mass of objects and the distance between them. This is true statement.

Physics defines force as the push or pull that modifies the velocity of a massed object.

The ability to change a body's resting or moving condition is referred to as an external force. There is a magnitude and a direction to it.

You may determine the Force using a spring balance. The SI's measure of force is the Newton.

The force of gravity between two objects is directly proportional to the mass of the object and inversely proportional to the square of the distance between them.

Hence, the force of gravity depends on the mass of objects and the distance between them. This is true statement.

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Answer:

30 J

Explanation:

height = 3 m

mass = 1kg

acceleration due to gravity = 10m/s²

Potential Energy = mass× gravity × height

= 1kg ×10m/s²× 3m

= 30 J

Answer:

22 km

Explanation:

11km + 11km= 22km

The speed and direction in which an object is moving is called the object's velocity.

Answer:

According to Newton's third law of motion, the reaction force is equal to the action force.

Explanation:

Newton's third law of motion states that for every action there is an equal and opposite reaction. This means that if one object exerts a force on a second object, the second object exerts an equal force in the opposite direction. When Plate X pushes on Plate Y with the action force (Fx), Plate Y must push back with an equal force (Fy).

Therefore, the best explanation is that according to Newton's third law of motion, the reaction force is equal to the action force.

For every action, there has equal and opposite reaction - this statement best describes the action and reaction forces on the plates.

As a result of this interaction, there are two forces: one from plate X and one from plate Y. The third law of motion of Newton deals with these two forces, which are referred to as action and reaction forces. Newton's third law is officially expressed as follows: There is an equal and opposite reaction to every action.

The implication of the statement is that there are always two forces acting on the two interacting objects. The force acting on the first object is equal in size to the force acting on the second. The force acting on the first object is acting in the opposite direction to the force acting on the second object. Force pairs—equal and opposing action-reaction force pairs—always exist in pairs.

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Answer:

-The movement of air in a hot-air balloon makes it rise into the sky.

-A house has high heating bills because the heat ends up in the attic.

please mark as brainliest

Explanation:

I got the question right

Answer:

It’s B

Explanation:

Answer:

Both potential energy because it still has a distance to move before it hits the ground and kinetic energy because its moving.

Explanation:

The energy transformation taking place when the person eats food is chemical energy to kinetic energy. The energy gain from food make us active by giving sufficient kinetic energy.

One form of energy can be transformed to the form naturally or mechanically. For instance, we are using electrical devices all such as light, bulb, fan, motors etc.

In light bulb, the electrical energy is converting to light energy and in fan, electrical energy is converting to the mechanical energy. We need energy to activate ourselves and when we starts to move we gain some kinetic energy.

When we eat food, the chemical energy stored in food is transferring to us and converts it to kinetic energy which helps us to be active. Hence, option B is correct.

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Answer:

I think food into chemical energy

Explanation:

this possibly could be wrong but I think it's right

Answer:

15.71 m/s

Explanation:

We are given;

Time; t = 0.2 s

Radius; r = 0.5 m

The circumference will give us the distance covered.

Formula for circumference is 2πr

Thus; Distance = 2πr = 2 × π × 0.5 = π

Linear speed = distance/time = π/0.2 = 15.71 m/s