PHYSICS HW PLS HELP I DONT UNDERSTAND

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Answer:

  2250 m North

Explanation:

distance = velocity × time

  = (25 m/min North)(90 min) = 25×90 m North = 2250 m North

_____

We're not sure what the m/m units are supposed to be in the answer choices. The displacement is measured in meters. The time units cancel when you multiply velocity by time.

__

The question "how far" is somewhat ambiguous in this context. It might refer to the distance only (2250 m), or it might refer to the distance in a particular direction (2250 m North).

Answer:

Los aviones se encuentran a las 5 horas a una distancia de 4000 kilómetros desde Buenos Aires.

Explanation:

Asumimos que Buenos Aires y Madrid están en las posiciones [tex]x = 0\,km[/tex] y [tex]x = 10000\,km[/tex], respectivamente. También conocemos por el enunciado que ambos aviones experimentan un Movimiento Rectilíneo Uniforme. Las ecuaciones cinemáticas de cada avión son las siguientes:

Buenos Aires - Madrid

[tex]x_{A} = x_{A'}+v_{A}\cdot t[/tex] (1)

Madrid - Buenos Aires

[tex]x_{B} = x_{B'} + v_{B}\cdot t[/tex] (2)

Donde:

[tex]x_{A'}[/tex], [tex]x_{B'}[/tex] - Posiciones iniciales de los aviones, medidas en kilómetros.

[tex]x_{A}[/tex], [tex]x_{B}[/tex] - Posiciones finales de los aviones, medidas en kilómetros.

[tex]v_{A}[/tex], [tex]v_{B}[/tex] - Velocidades de los aviones, medidas en kilómetros por hora.

[tex]t[/tex] - Tiempo, medido en horas.

Si sabemos que [tex]x_{A'} = 0\,km[/tex], [tex]x_{B'} = 10000\,km[/tex], [tex]v_{A} = 800\,\frac{km}{h}[/tex], [tex]v_{B} = -1200\,\frac{km}{h}[/tex] y [tex]x_{A} = x_{B}[/tex], entonces obtenemos la siguiente fórmula:

[tex]0+800\cdot t = 10000-1200\cdot t[/tex] (3)

[tex]2000\cdot t = 10000[/tex]

[tex]t = 5\,h[/tex]

Ahora obtenemos la posición en la que se encuentran ambos aviones al sustituir los valores conocidos en (1):

[tex]x_{A} = 0+800\cdot (5)[/tex]

[tex]x_{A} = 4000\,km[/tex]

Los aviones se encuentran a las 5 horas a una distancia de 4000 kilómetros desde Buenos Aires.

ANSWER

A)

Explanation:

Due to normal force from ground

Answer:The ground pushing off your foot

Explanation:

Answer:

20.4m/s²

Explanation:

Given parameters:

Initial velocity  = 0m/s

Distance  = 53m

Time  = 5.2s

Unknown:

Acceleration  = ?

Solution:

This is a linear motion and we use the right motion equation;

        S = ut  + [tex]\frac{1}{2}[/tex]at²

S is the distance

u is the initial velocity

a is the acceleration

t is the time

 Insert the parameters and solve;

       53  = (0x 5.2) +  [tex]\frac{1}{2}[/tex] x a x 5.2

       53  = 2.6a

         a = [tex]\frac{53}{2.6}[/tex]  = 20.4m/s²

Answer:

When a branch of a tree is shaken, some of the fruits may fall down. Why? Solution : The fruits fall down due to inertia of rest.

Answer:

I HOPE IT WILL HELP YOU A LOT....

Answer:

there is an infinite number of images because it is reflected off of the mirrors. the images in the mirror will "move" if either mirror is shifted because the angle of reflection. the images are the same because its just a repeated reflection. i see the object on both sides, repeated as far as i can see in both mirrors.

Explanation:

The mass is 12,000

144,000 divided by 12 = 12,000

Momentum = mass × velocity

Answer:

D. Weight is an object's mass multiplied by the amount of

gravitational force acting on that object.

Explanation:

I got it right on the test

Weight is an object's mass multiplied by the amount of gravitational acceleration acting on that object. Hence, option (D) is correct.

The most fundamental characteristic of matter is its mass, which is one of the fundamental physical quantities. Mass is a term used to describe how much matter is there in a body. The kilograms is the SI unit of mass.

The amount of a body's weight indicates how much gravity is pulling on it. The weight formula is as follows: w = mg Since weight is a force, it has the same SI unit as a force, which is the Newton.

When we look at how weight is expressed, we can see that it depends on both mass and the acceleration caused by gravity. Hence, weight is an object's mass multiplied by the amount of gravitational acceleration acting on that object.

Learn more about weight here:

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Answer:3

Explanation:

Answer:

I believe  that the crab would have 14 arms if the octopus had 12 arms

Explanation:

Answer:

Increase

Explanation:

If the mass of the earth increase, with no change in radius, one's weight would also increase considerably.

The reason for this is that, the gravitational force of attraction between the two bodies will increase.

Answer:

True

Explanation:

because if your body image is negative your holistic health is will affect

Answer:

The Gravity gets stronger

Explanation:

Newtons laws of motion.

Answer:

5n

Explanation:

10n divided by 2n is 5n

Answer:

The ocean becomes cooler

Explanation:

La Niña is a phase of a natural climate pattern which occurs across the tropical Pacific Ocean and swings back and forth every 3 - 7 years on the average.

Now, during La Niña, the surface winds across the entire tropical Pacific Ocean are usually stronger than they are on the average, and in return most of the tropical Pacific Ocean will become cooler than they are on average.

Thus, looking at the given options, the correct one is;

The ocean becomes cooler

The way in which La Niña affects the climate of the Pacific Ocean is that: A. The ocean becomes cooler.

La Niña is a complex oceanic and atmospheric phenomenon that occur due to variations in ocean temperatures across the equatorial band of the Pacific Ocean, at a specific period of time in years. Also, it is a colder part of the El Niño-Southern oscillation climate pattern.

Basically, La Niña causes the surface winds blowing across the equatorial band of the Pacific Ocean to be stronger while reducing tropical cyclogenesis. Consequently, this causes the climate of the Pacific Ocean to become cooler.

Read more on La Niña here: https://brainly.com/question/8605307

Answer:

Fission, in biology, is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original. The object experiencing fission is usually a cell, but the term may also refer to how organisms, bodies, populations, or species split into discrete parts.

Metabolism is the set of life-sustaining chemical reactions in organisms. The three main purposes of metabolism are: the conversion of food to energy to run cellular processes; the conversion of food/fuel ...

Explanation:

Answer:

B

Explanation:

A cupboard is placed in front of a heater. Air can move through a gap under the cupboard will cool towards the heater.

A heater is a device for supplying heat, for example a radiator or a convector. These water heaters heat water only when it is needed. Turn on the heater and the interior of the car will soon warm up. A heater is a device for supplying heat, for example a radiator or a convector.

A cupboard is placed in front of a heater. Air can move through a gap under the cupboard. The temperature, and the direction of movement, of the air in the gap under the cupboard will cool towards the heater.

A cupboard is placed in front of a heater. Air can move through a gap under the cupboard will cool towards the heater.

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Answer:

3.6

Explanation:

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Answer:

the answer is protons b

Explanation:

brainliest if 1st one..

Answer: it  is proposes that in Earth's prebiotic history, simple organic matter was exposed to energy in the form of volcanoes and electrical storms

Explanation:

Answer:

heat?

Explanation:

Answer:

490J

Explanation:

Given parameters:

Mass of box  = 10kg

Height  = 5m

Unknown:

Work done  = ?

Solution:

Work done can be derived from the product of force and distance;

   Work done = force x distance

 Force here is applied by gravity and it is the weight

 The distance is the height

  Work done  = weight x height

 Work done  = mass x acceleration due to gravity x height

 Work done  = 10 x 9.8 x 5  = 490J

Answer:

Glucose

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Answer:

Explanation:

Power = Force * distance/time

Given

mass = 55kg

Force = 55 * 10 = 550N

Let the distance covered be 8m

time taken = 5secs

Required

Amount of Power used

Power = 550 * 8/5

Power = 110 * 8

Power = 880 Watts

2) The way he can reduce the amount of power expended is to reduce the amount of stairs or the distance covered in a specified period of time.

Answer:

First, remember that:

Acceleration = dV/dt

where V is velocity and t is time.

When you launch a projectile (θ between 0° and 90° means that you are not launching it into the ground) you are applying an initial velocity v0, that can be separated in components, where the vertical component will be:

v0*sin(v)

That initial vertical velocity is a constant, so it does not depend on time.

Then when we differentiate with respect to the time, that constant will vanish, and we will get:

rate of change of the vertical velocity = vertical acceleration.

And as you know, when we ignore the air resistance the only force acting on the vertical axis is the gravitational force, such that the vertical acceleration will be:

a(t) = -9.8m/s^2

Where the negative sign is because this force points down.

Then the rate of change of the vertical velocity will be exactly that, -9.8m/s^2.

And the vertical velocity equation, to see exactly how the vertical velocity depends on time, will be:

V(t) = (-9.8m/s^2)*t + v0*sin(θ)

Answer:

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Explanation:

The x - component of the initial velocity is given as:

Ux = Vi cos theta

Ux = 100cos 60

Ux = 50m/s

Answer: 1. A Unbalanced force and net force

Explanation:

The combination of all forces acting on a object is called a Net Force, and a Unbalanced force can cause an object to stop, start moving or change direction.