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2 years ago

Which of the following is an example of kinetic energy being converted to potential energy?

Physics

2 answers:

horsena [70]2 years ago

4 0

Of the following...?? Is there more to this question? :)

goldenfox [79]2 years ago

3 0

Answer:

not completed questions

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What is the period of a 3. 98 m long pendulum? What is the period of a 99. 4 cm long pendulum?.

madam [21]

A pendulum's time period is the amount of time it takes to complete one oscillation. The pendulum with a length of 3.98 m and a length of 99.4 cm will have a time period of 4 and 1.99 seconds, respectively.

<h3>What is the definition of a simple pendulum?</h3>

A simple pendulum is a device with a point mass hanging from fixed support and connected to a light inextensible thread.

The vertical line going through the fixed support represents the mean position of a basic pendulum.

h = vertical distance from the point of suspension

L = length of the simple pendulum

The time period of the simple penduum is given by

$\rm T = 2\pi\sqrt{\frac{l}{g} }$

For l = 3.98 m

$\rm T = 2\times 3.14 \sqrt{\frac{3.98}{9.81} }$

T = 4 second

For l = 99.4 cm = 0.994 m

$\rm T = 2\times 3.14 \sqrt{\frac{0.994}{9.81} }$

T = 1.99 second

The time period of the pendulum having 3.98 m and 99.4 cm in length will be 4 and 1.99 seconds respectively.

To learn more about the simple pendulum refers to the link;

brainly.com/question/14759840

4 0

2 years ago

If an employee gets injured when while preparing food, bandages should be:

My name is Ann [436]

Answer:

B. Covered with a single -use glove

Explanation:

<em>The correct would be to cover the bandage with a single-use glove</em>.

<u>In order to prevent contamination as well as reduce the risk of aggravated injury during food handling, injuries should be bandaged immediately they happen. Neither bandage nor glove alone is sufficient to prevent food contamination. Both bandage and glove should be used to create what is known as a double barrier. </u>

The glove to be used in this case should be a single use/disposable glove.

The correct option is B.

4 0

3 years ago

A sound wave travels through a column of hydrogen at STP. Assuming a density of rho = 0.0900 kg/m3 and a bulk modulus of β = 1.4

STALIN [3.7K]

Answer:

speed of sound will be 1256 m/sec

Explanation:

We have given density $\rho =0.09kg/m^3$

And bulk modulus $\beta =1.42\times 10^5Pa$

We know that speed of sound in a medium is given by

$v=\sqrt{\frac{\beta }{\rho }}$ , here $\beta$ is bulk modulus and $\rho$ is density

So speed will be $v=\sqrt{\frac{1.42\times 10^5}{0.09 }}=12.56\times 10^2=1256m/sec$

So speed of sound will be 1256 m/sec

4 0

3 years ago

Rachel has been reading her physics book. She takes her weighing scales into an elevator and stands on them. If her normal weigh

GrogVix [38]

Answer:

345 N

Explanation:

Given:

Normal weight of Rachel (mg) = 690 N

Case 1: Upward motion of elevator

Given:

Acceleration of elevator (a) = 0.25 g

The scale reading is given by the normal force acting on Rachel. Let N₁ be the normal force.

So, the net force acting on Rachel is given as:

$F_{net}=N_1-mg=N_1-690$

Now, from Newton's second law:

$F_{net}=ma\\\\N_1-690=m\times 0.25g\\\\N_1-690=0.25\times (mg)\\\\N_1-690=0.25\times 690\\\\N_1=690+172.5=862.5\ N------(1)$

Case 2: Downward motion of elevator

Given:

Acceleration of elevator (a) = 0.25 g

The scale reading is given by the normal force acting on Rachel. Let N₂ be the normal force.

So, the net force acting on Rachel is given as:

$F_{net}=mg-N_2=690-N_2$

Now, from Newton's second law:

$F_{net}=ma\\\\690-N_2=m\times 0.25g\\\\690-N_2=0.25\times (mg)\\\\690-N_2=0.25\times 690\\\\N_2=690-172.5=517.5\ N------(2)$

Now, the difference in the scale reading is obtained by subtracting equation (2) from equation (1). This gives,

$Difference=N_1-N_2=862.5-517.5=345\ N$

Therefore, the difference between the up and down scale readings is 345 N.

4 0

2 years ago

The three branches of science are ____, earth, and physical

Rom4ik [11]

The three branches of science are life, earth, and physical science.
Life science deals with living organisms, so, biology is the most important of these sciences, although there are many.
Earth science deals with Planet Earth, studying its atmosphere, lithosphere, etc.
Physical science studies the inorganic world.

5 0

3 years ago

Read 2 more answers