A 20 N force pulls to the right and friction pulls 5 N. If the mass is 5 kg, find the acceleration.

Answer:

V1 = S / t1 = speed up stalled escalator = 10/94 = .106 m/s

V2 = S / t2 = speed of escalator = 10 / 60 = .167 m/s

V = V1 + V2     combined speed

T = S / V = 1 / t1 + 1 / t2 = t1 * t2 / (t1 + t2)

T = 60 * 94 / (60 + 94) = 36.6 sec

Check: combined speed = .106 + .167 = .273 m/s

T = 10 / .273 = 36.6

Answer:

P=mgh

P=mghm=55

P=mghm=55g=9.8 or ~10

P=mghm=55g=9.8 or ~10h=27

Explanation:

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Answer:

Hooke’s law can be applied to all materials which come back to original shape upon withdrawal of the load. It is applicable to all materials which follow the linearity of stress and strain in the elastic limit. Any object made of steel or aluminum or any other metals that follows the stress-strain linearity in the elastic zone uses Hooke’s law.

Explanation:

Answer:

No.

Materials which obeys Hook's law are called elastic material.

Elastic material are material which return to their original shape and size after force deforming them is removed.

The relationship between object distance, image distance, and focal length of a spherical mirror is given by

1/f=1/v+1/u

Where

f= focal length of a spherical mirror (distance between the pole and the principal focus of the mirror)

u= object distance (distance between pole and object)

v= image distance (the distance between pole and image)

Answer:

A

sound waves are longitudinal waves with the oscillation parallel to the direction in which energy is transferred

A longitudinal wave with the oscillation parallel to the direction in which energy is transferred is the correct. Therefore option A is correct option.

Electromagnetic wave are the wave that contains both electric wave and magnetic wave. These two waves are perpendicular to each other. There are two kinds of this wave, one is longitudinal wave and transverse wave.

When movement of particles of wave move parallel to the direction of wave propagation. To go in parallel direction, there is two way one is in the direction of propagation or anti to the direction of propagation. Transverse is the wave in which wave particle travel perpendicular to the direction of propagation.

The wave that is present in the sound wave is the longitudinal wave.  A longitudinal wave with the oscillation parallel to the direction in which energy is transferred. Therefore option A is correct option

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Answer:

Line C

Explanation:

Hi there!

Speed is equal to Distance divided by Time:

speed = distance / time

Notice how distance is the dependent value on the graph, lying on the y-axis, and time is the independent value on the graph, lying on the x-axis.

The slope of a line is equal to Rise divided by Run:

slope = rise / run

"Rise" means the number of units the line travels up in the y-direction and "run" means the number of units the line travels to the right in the x-direction.

This makes the "rise" of the line equivalent to the distance, and the "run" of the line equivalent to time.

Therefore, speed = slope.

To find the line that shows the object moving at its fastest speed, we must find the line with the greatest slope (or the steepest going up).

That would be line C.

I hope this helps!

Answer:

Container 1

Explanation:

The reason why there will be less pressure in container 1 is that it's colder than container 2. You must have learned right, that a colder thing has its molecules less moving, and they don't expand, instead they actually decrease in volume? In the same way, it's applied to gas also. So that's why, because container 1 has 15C temperature, which is half less than container 2's 30C, that's why, container 1 has less pressure than Container 2.

So hence, container 1 has less pressure than container 2 because of its a lower temperature, which doesn't make the molecules expand, and move around that much.

THANKS!

Answer:

The magnitude or strength of an electric field in the space surrounding a source charge is related directly to the quantity of charge on the source charge and inversely to the distance from the source charge. The direction of the electric field is always directed in the direction that a positive test charge would be pushed or pulled if placed in the space surrounding the source charge.

Explanation:

I really hope this helps you!

The rank for the strength of electric field can be given as D>B>E>C>A. The amplitude or intensity of such an electric field inside the region around a source charge is proportional to the amount of charge.

Electric field lines are a paper representation of electric field lines. These are drawings that employ lines and arrows to illustrate electric fields surrounding charged objects, making them highly useful in understanding field intensity and direction.

The amplitude or intensity of such an electric field inside the region around a source charge is proportional to the amount of charge just on source charge as well as inversely proportional to the distance first from source charge. The rank for the strength of electric field can be given as  D>B>E>C>A.

Therefore, the rank for the strength of electric field can be given as  D>B>E>C>A.

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Newton's 2nd law

[tex]\tt \sum F=m.a[/tex]

input the value:

[tex]\tt m=\dfrac{\Sum F}{a}=\dfrac{140~N}{15~m/s^2}=9.3~kg[/tex]

The mass of the ball, that  person throws, is 9.33 kg.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

A spring balance can be used to calculate the Force. Newton is the SI unit of force.

Force applied on the ball = 140 N.

Acceleration of the ball = 15 m/s².

According to Newton's 2nd law of motion:

Force = mass × acceleration

Mass = force ÷ acceleration

= 140 N ÷ 15 m/s²

= 9.33 kg.

Hence, the mass of the ball is 9.33 kg.

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Answer:

9.8 N downward

Explanation:

The weight force is defined as w = mg, where m is the mass of the object and g = 9.8 m/s^2. Plugging in values shows that the force exerted on the ball is 9.8 N, downwards toward the ground.

Answer:

True

Explanation:

Answer:

The answer is T (True)

Explanation:

Answer: 66 kg m/s

Explanation:

The equation for Momentum is

p=mv

where P is momentum

m is mass

and v is velocity (speed)

Since we have both mass and velocity all we have to do is multiply the mass and velocity to get momentum

12kg * 5.5 m/s = 66 kg m/s

Answer:

The plane would need to travel at least [tex]8,\!580\; {\rm ft}[/tex] ([tex]8.58 \times 10^{3}\; {\rm ft}[/tex].)

The [tex]10,\!000\; {\rm ft}[/tex] runway should be sufficient.

Explanation:

Convert unit of the the take-off velocity of this plane to [tex]\rm ft\cdot s^{-1}[/tex]:

[tex]\begin{aligned}v &= 180\; {\rm mph} \\ &= 180\; {\rm mi \cdot hrs^{-1}} \times \frac{1\; {\rm hrs}}{3600\; {\rm s}} \times \frac{5280\; {\rm ft}}{1\; {\rm mi}} \\ &= 264\; {\rm ft \cdot s^{-1}}\end{aligned}[/tex].

Initial velocity of the plane: [tex]u = 0\; {\rm ft \cdot s^{-1}}[/tex].

Take-off velocity of the plane [tex]v =264\; {\rm ft\cdot s^{-1}}[/tex].

Let [tex]x[/tex] denote the distance that the plane travelled along the runway. Since acceleration is constant but unknown, make use of the SUVAT equation [tex]x = ((u + v) / 2) \, t[/tex].

Notice that this equation does not require the value of acceleration. Rather, this equation make use of the fact that the distance travelled (under constant acceleration) is equal to duration [tex]t[/tex] times average velocity [tex](u + v) / 2[/tex].

The distance that the plane need to cover would be:

[tex]\begin{aligned}x &= \left(\frac{u + v}{2}\right)\, t \\ &= \frac{0\; {\rm ft \cdot s^{-1}} + 264\; {\rm ft \cdot s^{-1}}}{2} \times 65.0\; {\rm s} \\ &= 8.58\times 10^{3}\; {\rm ft}\end{aligned}[/tex].

Answer:

A

Explanation:

The universe was created from a cosmic explosion.

Acceleration is mathematically defined as; ΔV/t.

Acceleration is defined as the ratio of the change in velocity to time. It is defined as the extent to which the velocity changes within a given time interval.

The question is incomplete so we can not arrive at the final answer. However, acceleration is mathematically defined as; ΔV/t.

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Answer:

Mercurio

Masa

3,285 × 10^23 kg

Mercurio está a una distancia promedio de 48 millones de millas (77 millones de kilómetros) de la Tierra.

Venus

Masa

4.867 × 10^24kg

En su punto más cercano a la Tierra, Venus está a unos 61 millones de kilómetros (38 millones de millas) de distancia.

tierra

Masa

5.972 × 10^24kg

Marte

Masa

6,39 × 10^23 kg

La distancia mínima de la Tierra a Marte es de unos 54,6 millones de kilómetros (33,9 millones de millas).

Júpiter

Masa

1.898 × 10^27kg

Debido a que ambos planetas viajan en una trayectoria elíptica alrededor del sol, la distancia de Júpiter a la Tierra cambia constantemente. Cuando los dos planetas están en su punto más cercano, la distancia a Júpiter es de solo 365 millones de millas (588 millones de kilómetros).

Saturno

Masa

5.683 × 10^26kg

Su distancia más cercana a la Tierra es de aproximadamente 1.200 millones de kilómetros (746 millones de millas)

Urano

Masa

8.681 × 10^25kg

la distancia entre la Tierra y Urano cambia diariamente. Lo más cerca que están los dos es 1.600 millones de millas (2.600 millones de kilómetros).

Neptuno

Masa

1.024 × 10^26kg

Cuando Neptuno y la Tierra se alinean en el mismo lado del sol, en su punto más cercano, están a solo 2,700 millones de millas (4,300 millones de kilómetros)

masa de Plutón =

1.30900 × 10^22 kilogramos

Plutón se encuentra a 4670 millones de millas (7500 millones de kilómetros) de la Tierra. En su punto más cercano, los dos están a solo 2660 millones de millas (4280 millones de km) de distancia.

Answer:

The first part of the question is asking about BUOYANT FORCE or UPTHRUST.

Upthrust =TRUE WEIGHT-APPARENT WEIGHT

TRUE WEIGHT=mg

TRUE weight=50kg×10m/s²

=500N

upthrust=500N-380N

FB=120N

volume of the rock=mass/density.

since the granite is completely submerged, the volume of the displaced liquid will be equal to the volume of the body.

upthrust=Vdg

120N=V×1000kg/m³×10m/s²

120N=V×10000kg/m²s²

120/10000=V

v=0.012m³

please mark brainliest, hope it helped

Answer:

1/3 kg

Explanation:

[tex]a = \frac{f}{m} = \frac{1}{3 }kg[/tex]

The distance from the Sun where ice and gases become prevalent on a planet's surface relative to liquid water is defined as the frost line.

A frost line also known as frost depth or freezing depth, is the depth to which the groundwater in soil is expected to freeze.

It is the distance from the Sun where ice and gases become prevalent on a planet's surface relative to liquid water.

Thus, the distance from the Sun where ice and gases become prevalent on a planet's surface relative to liquid water is defined as the frost line.

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Answer:

(B) electromagnetic radiation

Explanation:

Answer: B electromagnetic radiation

Explanation: hope this helps ik im a bit late though

Answer:

V1 A1 = V2 A2

V1 = 10m/s

A1 = 8m

10x8 =80

V2 =?

A2 = 4m

80 = V2 x 4

÷4

20 = V2

V2 =20m/s

Explanation:

If one halfs, the other doubles & vice versa. (Like inverse proportion or the reciprocal). That's why when you half 8m, the velocity doubles, on the other side. Then, balances out.

Hope this helps!

Answer:

11km

Explanation:

5 + 4 + 2 = 11 (The whale traveled for 11km even if it changes direction)

Answer:

When you push it hard enough, then force for the Bush is created than the fictional force. So that means that is net force Equus. If Bush minus the fiction force is very Dan zero, so that means that is mass times acceleration. So that's why it starts moving in the direction off the bush Boxee.

Explanation:

Let there be light! At the flick of a switch, a light bulb can light or illuminate an entire room, but what else is happening? One the basic laws of physics, the conservation of energy, tells us that energy is neither created nor destroyed: rather, it can only be transformed from one form to another. In the case of the light bulb, electrical energy is being transformed into light and thermal (heat) energy. Different wattages and types of bulbs give off varying amounts of light and heat. In this light bulb science project, we'll be working with incandescent and compact fluorescent lamp bulbs (CFL’s).

Answer:

where is the problem u need help with

Explanation:

(: pls mark brainliest

Answer: math is an area of knowledge that includes the study of such topics. as numbers and formulas related structures, algebra and geometry also calculus and analysis

Explanation: