(Repost) I need this answer ASAP!

Answer:

B.  0.50 meters/second^2

Explanation:

Given:

Arranging Formulas and Substituting Values, Part 1:

Arranging Formulas and Substituting Values, Part 2:

Answer:

B.  0.50 meters/second^2

Explanation:

Answer:

C

Explanation:

Centripital force points to the center.

Using Newton's second law we can know the direction of the force that creates the uniform circular motion, the correct answer is:

C) The force must go towards the center of the circle

Newton's second law establishes a linear relationship between force and mass of the body and its relationship is

           F = m a

The bold letters indicate vectors, where F is the force, m the mass that is a scalar and the acceleration of the body

By analyzing this expression we see that the direction of the net force and the acceleration are the same,

The uniform circular motion is characterized by having a speed, speed modulus, constant therefore in the movement the acceleration vector must be perpendicular to the speed so that the change is of direction only.

The acceleration must go towards the center of the circle and by Newton's second law the net force must also go towards the center of the circle.

Let's analyze the different strengths of the graph

a and d) Tangential force to the circle

    False. This force changes the modulus of the velocity so the movement stops being uniform circular

e) outward perpendicular force

   False. This force changes the direction of the velocity and maintains its modulus, but the antiparallel to the acceleration which contradicts Newton's second law

b) Force at an angle.

   False. This force can be decomposed into two vectors, one parallel and the other perpendicular to the circle, the parallel vector combines the speed modulus and the movement is elliptical.

c) Force towards the center of the circle.

    True. This force changes the direction of the velocity and maintains its modulus, in addition, the acceleration is in the direction of the change in velocity, which is why the particle describes the circle.

Using Newton's second law we can know the direction of the force that creates the uniform circular motion having the correct answer is:

c) The force must go towards the center of the circle

learn more about the centripetal force here:

https://brainly.com/question/14249440

Explanation:

Initial velocity is 25m/s i.e. u. Final velocity would be zero since the bus stopped. It is noted that the bus deccelartion of 4m/s, so the acceleration should be considered negative of 4m/s I.e. 4m/s. So using third law of motion i.e.

v^2 - u^2= 2as

(0)^2 - (25)^2= -2×4×s {Note here I used minus sign in acceleration}

-625 = -8×s

s=625 ÷ 8

s= 125 m

So bus would cover a distance of 125m before coming to rest.

Answer: True

Explanation:

Mass is the amount of matter in an object. Everything is made up of matter.

Answer: true

Explanation: Matter is all the “stuff” that exists in the universe. It has both mass and volume. Mass measures the amount of matter in a substance or an object.

Answer:

d

Explanation:

I did the test and got it right.

Based on the table, the statement that is true about the solubility of two substances in 100 milliliters is the solubility of hydrochloric acid increases as temperature increases. The correct option is d.

Solubility is a condition when the solute is fully mixed with the solvent and there is no difference between the molecules of solvent and the solutes.  The solubility of a substance is based on its molecules. If they are polar, then they can dissolve in numerous solvents.

The salt molecules are fully soluble in the water. The molecules which get dissolved are called the solute and the molecules that dissolve something within them, are called solvents.

Thus, the correct option is d, The solubility of hydrochloric acid increases as temperature increases.

To learn more about solubility, refer to the link:

https://brainly.com/question/8591226

#SPJ6

Answer:

The force needed to launch the projectile is 150000 N.

Explanation:  

We can find the force using the following equation:

[tex] F = ma [/tex]

Where:

m: is the mass = 15 kg

a: is the acceleration

First, we need to find the acceleration of the projectile:

[tex] v_{f}^{2} = v_{0}^{2} + 2ax [/tex]                          

Where:

[tex]v_{f}[/tex]: is the final speed

[tex]v_{0}[/tex]: is the initial speed = 0

x: is the distance = 2 m

The final speed is:

[tex]v_{f} = \frac{1 km}{5 s}*\frac{1000 m}{1 km} = 200 m/s[/tex]

Then, the acceleration is:

[tex]a = \frac{v_{f}^{2}}{2x} = \frac{(200 m/s)^{2}}{2*2 m} = 10000 m/s^{2}[/tex]

Finally, the force is:

[tex]F = ma = 15 kg*10000 m/s^{2} = 150000 N[/tex]

Therefore, the force needed to launch the projectile is 150000 N.

I hope it helps you!  

Answer:

C. Acceleration due to gravity

Explanation:

which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2.

Answer:

did you find the answer yet??

Explanation:

Answer:

anything inflated, a can, and a pencil.

Explanation:

these objects can flaot on water because theyre mass is not enough for the objects to sink.

Answer:

A damped oscillation means an oscillation that fades away with time while Forced oscillations occur when an oscillating system is driven by a periodic force that is external to the oscillating system.

Explanation:

Damping is the reduction in amplitude (energy loss from the system) due to overcomings of external forces like friction or air resistance and other resistive forces. ... When a body oscillates by being influenced by an external periodic force, it is called forced oscillation.

Welcome

Answer:

600 km

6 hours

Explanation:

El tiempo que viaja el automóvil de 6 a 10 de la mañana es [tex]10-6=4\ \text{horas}[/tex]

La velocidad del coche es 150 km/hr

La distancia está dada por

[tex]\text{Distancia}=\text{Velocidad}\times \text{Tiempo}[/tex]

[tex]150\times 4=600\ \text{km}[/tex]

A distancia recorrida a las 10 de la mañana es de 600 km.

Ahora el tiempo que se toma está dado por

[tex]\text{Tiempo}=\dfrac{\text{Distancia}}{\text{Velocidad}}[/tex]

[tex]\dfrac{900}{150}=6\ \text{horas}[/tex]

El tiempo que se tarda en recorrer 900 km es de 6 horas.

Answer:

The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength. ... The frequency is the same as that of the source and is the number of waves that pass a point per unit time.

Explanation:

HOPE THIS HELPS ;}

Answer:

C

Explanation:

Answer:

C

Region B, the corpus callosum, is composed of several lobes while region D, the cerebellum, only has one lobe.

Explanation:

Answer:

1 km = 1000 m

1 m = 100 cm

1 m = 1000 mm

1 cm = 10 mm

hope this helps u figure it out :)

Answer:

C

Explanation:

The sun's radiation strikes the ground, thus warming the rocks. As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air. This bubble of air rises into the atmosphere.

Answer:

A

Explanation:

It’s cold in the winter

hot in the summer

and in spring it’s warm

Answer:

False

Explanation:

Answer:

b i. The curve would be less steep than both of the graphs.

c. The temperature was the same at the start of the experiment so that the only variable changed in the experiment would be the thickness of the walls and the change in temperature can be measured from the same starting temperature, ensuring a fair experiment.

Explanation:

b i. Since you know that a thicker wall conducts heat from the inside room to the surroundings slower (based on my previous answer ;)), heat from the room would be conducted to the surroundings by the thicker wall slower and the temperature change will be less drastic and the graph would be less steep.

c. In an experiment, only one independent variable can be changed and we would normally record the dependent variable to get a conclusion for the experiment as the dependent variable is the variable that is affected by the independent variable. We should not change any other variable in the experiment, such as the starting temperature of the experiment.

For e.g. If you want to find out how the amount of water affects a plant's growth, the amount of water would be the independent variable and that would be the only thing you would change in that experiment. During the experiment, you would record the dependent variable, which is the height of the plant. The type of plants used and the type of soil..etc should be kept the same/constant so that it is a fair experiment, as a better type of soil may make the plant grow taller.

Responder:

A. Ff = 300 N N = 784,8 N

Explicación:

Dado

Masa del cuerpo = 80 kg

Fuerza de movimiento Fm = 300N

Dado que el cuerpo no está acelerando, la fuerza de fricción (Ff) es igual a la fuerza de movimiento que actúa sobre el cuerpo, ya que la fuerza de fricción es una fuerza de oposición, es decir, Fm = Ff

Dado que Fm = 300N, Ff = 300N

La reacción normal que actúa en el cuerpo es igual al peso.

N = W = mg

g es la aceleración debida a la gravedad

g = 9,8 m / s

N = mg

N = 80 (9,81)

N = 784,8N

Por tanto, la fuerza normal que actúa sobre el cuerpo es 784,8 N

Answer:

25038.72 mph (filler please ignore)

Answer:

Ignoring the effects of air resistance, the speed of gravity on Earth is 9.81 m/s 2.

Explanation:

Answer:

(a) The acceleration of the train and cars is approximately 0.304 m/s²

(b) The tension between the locomotive and the car connected to the locomotive is approximately 0.4166 N

Explanation:

The given parameter are;

The mass of the toy locomotive = 0.979 kg

The mass of one car = 0.952 kg

The mass of the other car = 0.419 kg

The total mass of the train locomotive and cars = 0.979 + 0.952 + 0.419 = 2.35 kg

The weight of the train locomotive and cars = 9.81 m/s² × 2.35 kg = 23.0535 N

The normal force of the train and cars = The weight of the train locomotive and cars = 23.0535 N

The coefficient of dynamic friction = The normal force × The coefficient of dynamic friction

The coefficient of dynamic friction = 23.0535 × 0.110 = 2.535885 N

The applied force = 3.25

The net force acting on the train locomotive and cars = 3.25 - 2.535885 0.714115 N

(a) Force = Mass × Acceleration

Acceleration = Force/Mass

∴ The acceleration of the train and cars = 0.714115 N/(2.35 kg) ≈ 0.304 m/s²

(b) The tension between the locomotive and the car connected to the locomotive = T₂ = ( (m₁ + m₂)/ (m₁ + m₂ + m₃)) × F

Therefore, T₂ =  ( (0.952 + 0.419)/ (0.952 + 0.419 + 0.979)) × 0.714115 ≈ 0.4166 N.

Answer:

Vf = Vi + a t       fundamental equation

-60 m/s= Vi - 9.8 m/s^2 * 6 sec      taking upward direction as positive

Vi =58.8 m/s - 60  m/s = -1.2 m/s   so the coin was initially thrown downward

As a check take the downward direction as positive

Vf = 1.2 m/s + 58.8 m/s = 60 m/s  

Answer

divide by 9.8 or 10

Explanation:

normal force equals to the weight, which is equal to mass* gravitational force

Answer: was it this problem?

Explanation:

Answer:

The distance between the 2 centers of the object.

Explanation:

If it's harder to win a super bowl for the rams than the gravity means the chiefs will win it.

Answer:

Explanation:

Centripetal force is expressed as;

F = mv²/r

m is the mass = 700/10 = 70kg

v = 8.8m/s

r = 25m

Required

Centripetal force

Substitute the given parameters into the formula;

F = 70*8.8²/25

F = 70 * 77.44/25

F = 5420.8/25

F = 216.832N

Hence the centripetal force of the runner is 216.832N

Answer: 1.42 N

Explanation:

Just took

Answer:

male= sperm cell

female= egg cell

together= embryo

Explanation:

Answer:

1. sperm

2. egg

3. zygote

Explanation I took this test and these are the correct answers because the third one above is not right.

Answer:

Answer: Creating more wind farms results in a reduction of fossil fuel use

Explanation:

Economical improvement is to make earth a superior spot for everybody, without wrecking the opportunities for the following ages. There are numerous Eco frameworks that should be in equilibrium for us to live here, the atmosphere framework is one of them. This framework guarantees that the atmosphere is right and the air transmits the perfect measure of sunlight based energy. With the destructive nurseries gases, (for example, Carbon dioxide) we stop up the air, this progressions the temperature of the earth that can influence our turn of events  

How we use energy is extraordinarily significant. Oil and coal are tests of energy that we may run out of, utilizing energy that restore themselves (wind ranches) is useful for the planet. Wind, water and sun are maintainable.

Hope this Helps (✿◡‿◡)

Answer:

Answer: D.Creating more wind farms results in a reduction of fossil fuel use

Explanation:

Answer:

D 10.2

Explanation:

255 ÷ 2.5= 10.2 or D

Answer:

D

Explanation:

Work = Mass * Gravity(9.8) * Height

height=work/(mass*9.8)

height=255/(2.5*9.8)=10.4m