give 10 situation in which you push or pull to change the state of motion of abject​

Answer:

The one on the left

Explanation:

Answer:

The one on the left

Explanation:

Answer:

(C) 700 N

Explanation:

The given parameters are;

The mass of the mountain climber, m = 100 kg

The angle formed by the rope with the horizontal, θ = 45°

The gravitational field strength, g = 10 N/kg

The weight of the man, W = m × g

∴ W = 100 kg × 10 N/kg = 1,000 N

At equilibrium, we have;

The downward force, the weight of the man, W = The upward force, the vertical component of the tension on the two halves of the rope

We have;

W = T × sin(θ) + T × sin(θ)

∴ 1,000 N = 2 × T × sin(45°)

Therefore, we have;

T = 1,000 N/(2 × sin(45°)) = 707.106781 Newtons

Therefore, the tension in the rope is closest to (approximately) 700 N.

Answer:

Explanation:

ADVANTAGES OF TISSUE CULTURE

There are several advantages to using the tissue culture process. We already mentioned its effectiveness in helping developing countries to increase food production, but what are some other advantages that may be relevant to you?

The new plantlets can be grown in a short amount of time.

Only a small amount of initial plant tissue is required.

The new plantlets and plants are more likely to be free of viruses and diseases.

The process is not dependant on the seasons and can be done throughout the year.

You need only a relatively small space to perform the process (ten times the plants in one-tenth of the space).

On a larger scale, the tissue culture process helps to supply the consumer market with new subspecies and variety.

People looking to cultivate challenging plants such as specific breeds of orchid find more success with the tissue culture process than traditional soil.

DISADVANTAGES OF TISSUE CULTURE

Tissue Culture can require more labor and cost more money.

There is a chance that the propagated plants will be less resilient to diseases due to the type of environment they are grown in.

It is imperative that, before being cultured, the material is screened; failure to pick up any abnormalities could lead to the new plants being infected.

While the success rate is high if the correct procedures are followed, success with the tissue culture is not a guarantee. There is still a chance that the process triggers a secondary metabolic chemical reaction, and the new explants or cells' growth gets stunted, or even die off.

Answer:

2 m/s

Explanation:

Applying,

The law of conservation of momentum

Total momentum before collision = Total momentum after collision

mu+m'u' = V(m+m')............... Equation 1

Where m = mass of the first freight car, m' = mass of the second freight car, u = initial velocity of the first freight car, u' = initial velocity of the second freight car, V = final combined velocity/ speed.

make V the subject of the equation

V = (mu+m'u')/(m+m')........... Equation 2

From the question,

Given: m = 1234 kg, m' = 2468 kg, u = 6 m/s, u' = 0 m/s (at rest)

Substitute these values into equation 2

V = [(1234×6)+(2468×0)]/(1234+2468)

V = 7404/3702

V = 2 m/s

Answer:

Workdone = 15 Nm

Explanation:

Given the following data;

Length of ramp (distance) = 3 m

Force = 5 N

To find the work done on the piano;

Mathematically, work done is given by the formula;

Workdone = force * distance

Substituting into the formula, we have;

Workdone = 5 * 3

Workdone = 15 Nm

II. The name of the simple machine for "ramp” is an inclined plane.

Typically, an inclined plane has a flat supporting surface that is set at an angle with an end higher than the other and it can be used to lift or lower an object.

Answer:

velocidad = -117.6 m/s

Al cabo de 12 segundos, la distancia que el objeto habra caido es 705.6 m

Explanation:

Sabemos que un objeto que está en el aire es atraído por la fuerza gravitatoria. Si ignoramos fuerzas como la fricción del aire, entonces la aceleración del objeto será solamente la aceleración gravitatoria, que sabemos que es 9.8m/s^2

Entonces la aceleración del objeto es:

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

Donde el signo menos se debe a que esta aceleración es hacia abajo.

Para obtener la velocidad, integramos sobre el tiempo:

V(t) = ( -9.8m/s^2)*t + V0

Donde V0 es la velocidad inicial, como el objeto se deja caer, la velocidad inicial es cero, entonces tenemos:

V(t) = ( -9.8m/s^2)*t  

Para la posición integramos nuevamente:

P(t) = (1/2)*( -9.8m/s^2)*t^2 + P0

donde P0 es la posición inicial, en este caso podemos definir la posición inicial como cero, solo por comodidad, entonces la posición se escribe como:

P(t) =  (1/2)*( -9.8m/s^2)*t^2

Ahora queremos saber:

La velocidad del objeto al cabo de 12 segundos. Acá simplemente reemplazamos t por 12s en la ecuación de la velocidad, así obtenemos:

V(12s) =  ( -9.8m/s^2)*12s = -117.6 m/s

También queremos saber la distancia que ha caído al cabo de 12 segundos.

Esto es igual a la diferencia entre la posición para t = 12s y la posición para t = 0s

P(12s) - P(0s) =  (1/2)*( -9.8m/s^2)*(12s)^2 -  (1/2)*( -9.8m/s^2)*(0s)^2

                     = -705.6 m

Esto significa que el objeto ha caído 705.6 metros al cabo de 12 segundos.

Answer:

I think it might be c.

Explanation:

Hope it's right :3

Answer:

Explanation:

This one-dimensional equation is just a fancy way of saying d = rt. Filling in:

d = 12.0(20) so

d = 240 m

The most appropriate measure is to tie back long hair to ensure it is safely secured and kept away from the experiment. The best answer is 3) tied back.

In laboratory settings, long hair poses a potential safety hazard due to the risk of hair getting tangled in equipment, chemicals, or flames. Therefore, it is important to tie back long hair to prevent it from coming into contact with hazardous substances or interfering with experiments.

1) Always neatly groomed and brushed and

2) held away from the experiment are good practices for general hygiene and cleanliness but may not adequately address the safety concern related to long hair in a laboratory setting.

4) cut short is not necessary as long as the hair is properly tied back and secured to minimize the risk of interference or contact with hazardous materials.

Thus, the most appropriate measure is to tie back long hair to ensure it is safely secured and kept away from the experiment. The best answer is 3) tied back.

To know more about the experiment concern:

https://brainly.com/question/30328381

#SPJ6

Answer:

Explanation:

The most important thing to remember about parabolic motion in physics is that when an object reaches its max height, the velocity right there at the highest point is 0. Use this one-dimensional motion equation to solve this problem:

v = v₀ + at and filling in:

0 = v₀ + (-9.8)(4.0) **I put in 4.0 for time so we have more than just 1 sig fig here**

0 = v₀ - 39 and

-v₀ = -39 so

v₀ = 39 m/s

Answer:

ln physics, Rest is the state at which an object is stationary or not moving with respect to its surroundings, and is said to be at rest. An example would be a book lying on a table.

Answer:

When an object does not change it's position with respect to time it is said to be at rest.

Explanation:

Example- A person sitting on a chair or a book lying on a table.

Please note there is no such thing as absolute rest.

Take the example of a person A sitting in a moving bus. If the observer is in the bus then to him person A is at rest. However if the observer is is outside the bus then person A is in motion as the bus is moving.

Please mark me as brainliest.

Answer:

D) side to side

Explanation:

The frictional force act on the cube in the side to side direction. The friction force acts opposite to the direction of the motion of an object which reduces its speed or sometimes prevent it from moving from one place to another. In order to reduce the force of friction, the body has to move by rolling instead of sliding and use of lubrication on the surface on which the object moves.

Answer: American sports culture has a much greater appreciation of and emphasis towards collegiate and high school sports. This may be the strongest difference between American sports culture and every other countries' sports culture.

Answer:

iPod does not use analog signals

Explanation:

Answer:

The answer is 300Joules

Answer:

Hello There!!

Explanation:

The answer is False.

hope this helps,have a great day!!

~Pinky~

Answer:

ture.

Explanation:

the correct answer is true.

Answer:

the equilibrant is equal in magnitude but opposite in direction.

Explanation:

In vector algebra, a resultant vector is a single vector that have the same effect as the effect of the net or algebraic sum of two or more vectors.

A resultant vector arises from finding the adding multiple vectors together.

When a group of vectors is replaced by a resultant vector, in order to keep the system of vectors at equilibrium, there is another vector which has the same magnitude as the resultant vector but acting in opposite direction to the resultant vector. This vector is called the equilibrant.

Answer:

It often happens in a circuit which was conducting,and a switch is opened. Any inductance in the circuit will help the voltage increase due to back emf,and this can cause breakdown of the air insulation and an arc can form.

Explanation:

Answer:

Critical angle

Explanation:

The angle of incidence when the refracted angle is 90°; we have the critical angle at this point. At this point, the refracted ray lies between the boundary between the two medium, this is the angle just before total internal reflection occurs, as the refracted angle exceeds 90°, all rays are reflected. Hence, we can conclude that it is the largest angle at which reflection can still occur.

Answer:

As an object moves faster, its mass increases. ... Because masses approach infinity with increasing speed, it is impossible to accelerate a material object to (or past) the speed of light. To do so would require an infinite force.

Answer:

B. The medium increases in temperature while remaining in the same phase

Explanation:

Good luck on all your tests and Exams!

The sound wave will increase when the medium increases in temperature while remaining in the same phase.

Sound waves are composed of compressions and rare factions. Sound is a mechanical wave hence it moves by the vibration of air particles.

As such, the sound wave will increase when the medium increases in temperature while remaining in the same phase.

Learn more about sound waves:https://brainly.com/question/11797560

#SPJ2

10. True

11. True

12. True

13. False

14. False

Hope this helps!!

Answer:

Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

Explanation:

Answer:

3000 kg*m/s

6000 kg*m/s

Explanation:

p = m*v

p = 150kg*20m/s

p = 3000 kg*m/s

p = 150kg*40m/s

p = 6000 kg*m/s

Answer:

∆p.e = mg∆h

Explanation:

Take height reference be h1 while height final be h2.

∆h = (h2 - h1)

m = m

g = g

•°• ∆p.e = mg(h2 - h1)

=> ∆p.e = mg∆h

Answer:

9.7 miles per second

Explanation:

divide 200 by 20.6

Explanation:

the rate at which someone or something moves or operates or is able to move or operate.