PHYSICS MIDDLE SCHOOL

A force that causes an object to change its motion is called a(n) _______a. unbalanced force
b. resistant force
c. compound force
d. unnatural force

Answers

Answer 1
Answer:

Unbalanced force causes an object to change its motion.

Answer: Option A

Explanation:

A force can be explained as push or a pull that has the tendency to change the velocity of a mass.

The force that makes any change in the movement of an object or body is known to be an unbalanced force. These forces are not equal and opposite. When an object is placed in a rest position and when unbalanced force acts on it, this will not make the object to move.

Example: Force applied against the ball.

The forces whose size is equal and opposite in their direction are known as balanced force. These forces will not make any change in motion of a body. When an object is placed in a rest position and when balance force acts on it, this will not make the object to move.

Example: Pushing against a wall.  
Answer 2
Answer:

Answer:

I believe it is A. Unbalanced.

Explanation:

Hope i helped you!

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How is a time interval different from a specific time?

Answers

 there is or how many there are of something that you can quantify

access time - (computer science) the interval between the time data is requested by the system and the time the data is provided by the drive; "access time is the sum of seek time and rotational latency and command processing overhead"

Human impact on one system leads to changes in more of Earth’s systems.   Please select the best answer from the choices provided T F

Answers

Answer;

The above statement is true

Human impact on one system leads to changes in more of Earth’s systems.  

Explanation;

Events can occur naturally, such as an earthquake or a hurricane, or they can be caused by humans, such as an oil spill or air pollution. An event can cause changes to occur in one or more of the spheres, and/or an event can be the effect of changes in one or more of Earth's four spheres.

Human impact on one system leads to changes in more of Earth’s systems because things like carbon and methane emissions affect the environment, which affects all plant and animal life.  

The statement "Human impact on one system leads to changes in more of Earth’s systems." is a true statement. This is further explained below.

What are Earth’s systems?

The Earth's five systems

  • geosphere
  • biosphere
  • cryosphere
  • hydrosphere
  • atmosphere

combine to create the surroundings we know.

In conclusion, These systems are on a balance to maintain human existence, meaning that if there is a disruption to one there is a disruption to all.

Read more about Earth

brainly.com/question/24878669

. An object’s resistance to change in motion is dependent solely on what quantity?

Answers

Answer : Mass

Explanation : An object's resistance to change in motion is solely dependent on the mass of the quantity. The tendency to resist the change in motion is called as inertia. Which is highly influenced by the factor called "mass" of the object. The mass of the quantity will decide the direction for change in the motion of a particular object.
It is dependent upon the object's mass. The greater the mass of the object greater will be the inertia of the object, and hence it's resistance to change in motion as well.

Example of natural frequency

Answers

Natural frequency is a frequency when an object hits a s surface and causes ripples or vibrations or disturbance of their nearby source. An example is throwing a stone to water. When you throw a stone, it creates a wave around the fallen stone. The water is being disturbed by the stone and creates a wave. This is a natural frequency.

A model rocket rises from rest with constant acceleration of 106m/s2.what is the rocket speed at a height of 3.2m

Answers

At a height of 3.2 meters, the final speed of the model rocket is 26.05 m/s.

Given the following data:

  • Initial speed = 0 m/s (since the model rocket accelerated from rest).
  • Acceleration = 106 m/s^2
  • Distance (height) = 3.2 meters.

To find the final speed of the model rocket, we would use the third equation of motion;

V^2 = U^2 + 2aS

Where:

  • V is the final speed.
  • U is the initial speed.
  • a is the acceleration.
  • S is the displacement or distance covered.

Substituting the given parameters into the formula, we have;

V^2 = 0^2 + 2(106)(3.2)\n\nV^2 = 0 + 678.4\n\nV = √(678.4)

Final velocity, V = 26.05 m/s

Read more: brainly.com/question/8898885

We can solve the problem by using the following equation:

v_f ^2 -v_i^2 =2aS

where

vf is the final speed of the rocket

vi=0 is the initial speed of the rocket (it starts from rest)

a=106 m/s^2 is the rocket's acceleration

S=3.2 m is the distance covered by the rocket

Re-arranging the equation, we find the velocity of the rocket after 3.2 m:

v_f = √(2aS)=√(2(106 m/s^2)(3.2 m))=26.0 m/s

The small piston in a hydraulic system has a cross-sectional area of 0.5 m2, and the large piston has an area of 3m3. What is the force exerted by the large piston if a force of 500 N is exerted on the small piston?

Answers

     Considering the fluid as ideal, the pressure will spread throughout its volume. Thus,

(F_1)/(A_1)= (F_2)/(A_2) \n F_2= (3* 500)/(0.5) \n \boxed {F_2=3000N}

If you notice any mistake in my english, please let me know, because my english level is still low.
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