Answer:
The Statement is wrong because the reverse is the case as it is the kinetic energy that is being transformed to gravitational potential energy.
Explanation:
As your friend throws the baseball into the air the ball gains an initial velocity (u) and this makes the Kinetic energy to be equal to
Here m is the mass of the baseball
Now as this ball moves further upward the that velocity it gained reduce due to the gravitational force and this in turn reduces the kinetic energy of the ball and this kinetic energy lost is being converted to gravitational potential energy which is mathematically represented as (m×g×h)
as energy can not be destroyed but converted to a different form according to the first law of thermodynamics
Looking a the formula for gravitational potential energy we see that the higher the ball goes the grater the gravitational potential energy.
Answer:A.
only when a nonzero net force is applied to the object.
Explanation:
(a) 0.714 cm
First of all, we need to find the spring constant of the spring. This can be done by using Hooke's law:
where
F is the force applied on the spring
k is the spring constant
x is the stretching of the spring
At the beginning, the force applied is the weight of the block of m = 4.20 kg hanging on the spring, therefore:
The stretching of the spring due to this force is
x = 2.00 cm = 0.02 m
Therefore, the spring constant is
Now, a new object of 1.50 kg is hanging on the spring instead of the previous one. So, the weight of this object is
And so, the stretching of th spring in this case is
(b) 1.65 J
The work done on a spring is given by:
where
k is the spring constant
x is the stretching of the spring
In this situation,
k = 2060 N/m
x = 4.00 cm = 0.04 m is the stretching due to the external agent
So, the work done is
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I believe outside influences have more of a negative impact on self-esteem.
Our tweens and early teens are a time when we become more aware of celebrities and media images, making them want to fit in.
We might start to compare ourselves with other people or media images, like ideals.
All of this can affect how we feel about ourselves and our bodies even as we grow into our teens. Family life can sometimes influence our body image.
Some parents or coaches might be too focused on looking a certain way for a sports team. Family members might struggle with their own body image or criticize their kids' looks, like weight.
This can all influence a person's self-esteem, especially if they're sensitive to others peoples' comments.
People also can experience negative comments and hurtful teasing about the way they look from classmates and peers.
Although these often come from ignorance, sometimes they can affect body image and self-esteem.
Hoped I helped!
