Answer:
I'm pretty sure it's the third one where velocity goes from positive to negative
Explanation:
the positive velocity is before the object hits the ground and the negative is after
Answer:
200J
Explanation:
200J is 100%, 10% of 200J would be 20J
This question involves the concepts of general gas equation and pressure.
The force exerted by the gas on one of the walls of the container is "74.08 KN".
First, we will use the general gas equation to find out the pressure of the gas:
where,
P = Pressure of the gas = ?
V = Volume of cube = (side length)³ = (10 cm)³ = (0.1 m)³ = 0.001 m³
n = no. of moles = 3 (since molecules equal to avogadro's number make up 1 mole)
R = general gas constant = 8.314 J/mol.K
T = Absolute Temperature = 24°C + 273 = 297 K
Therefore,
P = 7407.78 KPa
Now, the force on one wall can be given as follows:
where,
A = area of one wall = (side length)² = (0.1 m)² = 0.01 m²
Therefore,
<u>F = 74.08 KN</u>
<u></u>
Learn more about the general gas equation here:
brainly.com/question/24645007?referrer=searchResults
The spring constant of the given spring is 250 N/m. Spring constant is the measure of the stiffness of the spring.
<h3>
What is the spring constant?</h3>
It is the measure of the stiffness of the spring or in other work how much a spring resists the deformation.
From Hooke's law,
- force - 75 N
- spring constant
- displacement - 0.3 m
Put the values in the formula and calculate for ,
Therefore, the spring constant of the given spring is 250 N/m.
Learn more about spring constant:
brainly.com/question/4291098