Can u help me on this question plz

Answers

Answer 1

Answer:
Ah hah ! The two questions on this page are checking to see
if you understand what "net force" means.

Remember that "net force" means the result of adding up the
strength and direction of a group of separate forces.

Also remember that if the net force is not zero, then the object
accelerates in the direction of the net force.

-- Forces 'B' and 'D' both act horizontally on the airplane.
Force-'D' tries to pull it forward, and force-'B' tries to pull it
backward. The airplane is moving forward faster and faster.
This tells us that the net horizontal force on it must point forward.
So force-D must be stronger than force-B.

-- Forces 'A' and 'C' both act vertically on the airplane.
Force-A tries to pull it up, and force-C tries to pull it down.
At the moment of take-off, the airplane lifts off from the ground
and rises up and up. This tells us that the net vertical force on it
must point up. So force-A must be stronger than force-C.

Answer 2

Answer: I can't really see the answer, try underlining it or go over it in pen

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Can someone please answer these two science questions. Please don't answer with just anything for the points, I genuinely need the answers. Thanks! :)

Answers

Answer:

45 meters

Explanation:

notice that is you multiply the time with the speed the units cancel to get distance.

therefore

distance=velocity(time)

distance=(3)15

distance =45 meters

Answer:

1. the speed is constant

2. the average speed is .5 m/s

Explanation:

I have attached a graph of the data in excel.

from excel i got the equation of the line to be y=.5x with y being distance and x being time.

the function is a position function so if you take the derivative of it you get the velocity which is .5.

since the derivative is a constant the the speed does not change and the average velocity is the derivative.

When a bar magnet is broken into two pieces each piece has a north and south pole becausea
the magnetic fields reversed

b
every magnet is made of many aligned smaller magnets

с
bar magnets are permanent magnets

d
the magnetic poles have been isolated

Answers

Answer:

every magnet is made of many aligned smaller magnets

Explanation:

What are the starting ingredients and products of photosynthesis and cellular respiration

Answers

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

if you use the compound pulley, you will need to pull twice the distance but with less force. the force you need is equal to one half the weight of the box plus 25 N. what is the force needed?

Answers

Answer:

F= 25/2 = 12.5N

Explanation:

When you use a compound pulley the force required depends on the mechanical advantage of the compound pulley. This is known as rate of loss of distance or the ratio of the force to the load.

M.A = Effort distance /Load distance. OR M.A = Load/Effort

A timline is necessary :A.for every goal
B.for every academic goal
C.for every life goal
D.for every high school goal

Answers

Answer:

A. For every goal

Explanation:

A timeline is necessary for every goal set, be it academic, life, high school, personal, and the like. A timeline is an important part of goal setting. It helps determine what should be done by a certain time to ensure that you will reach your goal. Although some goals can take a long time to reach, a timeline will be your constant reminder of what needs to be done.

When setting a timeline, you also need to take in consideration what you want to achieve. You need to set a realistic timeline as many usually underestimate the obstacles they may face in pursuing their goals.

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.