28. A student notices that when a weight is hung on a spring, the spring stretches. She decides to conduct an experiment to determine

6 answers
Question:

28. A student notices that when a weight is hung on a spring, the spring stretches. She decides to conduct an experiment to determine the relationship between the amount of weight placed on a spring and the distance the spring stretches. She has five different weights: 25 9,50 9, 75 9, 100 g, and 125 g. She selects a weight, hangs it on the spring, and
measures how far the spring stretches
What is the independent variable in this experiment?
length of unstretched spring
O distance the spring stretches
weight hung from the spring
O temperature of the spring

Answers

Isometric stretching

Explanation:

Isometric stretching is a type of static stretching (meaning it does not use motion) which involves the resistance of muscle groups through isometric contractions (tensing) of the stretched muscles

Spring C

Explanation:

Multiply 25 and 4

Spring C

Explanation:

According to Hooke's law, a force require to compress or extend a spring is directly proportional to the distance from its mean position.

The force of compression or expansion of the spring is given by the formula,

                                      F = k x

Where,

                   k - spring constant. It is the constant value of the particular spring

                   x - distance of expansion or compression from mean position.

The x value of different spring,

                    A = 25 cm

                     B = 10 cm

                     C = 100 cm

                     D = 1 cm

The highest value of x for the same mass has the smallest spring constant according to the equation.

Hence, C has the smallest spring constant.

vertical line

Explanation:

 1.Tough fibrous connective tissue that attaches muscles to bones: Tendons 

A is an area where two bones meet and where one bone moves on another.c.joint 

2.Bones in your joints are covered with a smooth and slippery material called: a.cartilage  

3.The joints allow for turning and rotation. a.pivot 

4.Tensing of the muscles that does not involve joint movement is called:  c.Isotonic stretching 

5.Stretches that do not involve motionand are held for a brief period of time are called: b.Static stretches 

6.  refers to the bodys torso, which include abdominals, glutes, and lower back
 b.Core   

7.Exercise training method designed to improve strength, posture and flexibility, not spiritual in nature is called:  b.Pilates 

8.The benefits of Yoga include:

 d.all of the above  

9.The heart has one way valves which open and close with each heartbeat.

d.four  

10.The pulmonary valve and the aortic valve as the ventricles begin to contract. a.close 

weight hung from the spring

Explanation:

An "independent variable" refers to the variable that is being changed or manipulated in an experiment. This is being done in order to check its impact on the "dependent variables." The independent variable does not rely on any other variables.

In the experiment above, the independent variable is the "weight." This variable is being manipulated in order to know how far the spring will stretch. This is the reason why there are five different weights, which means there will be five different distances expected to be covered by the spring.

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