Answer:
2.4
Explanation:
To find the time above and below ymax/2 we use the following kinematic formula
Where
= Final Velocity
= Initial Velocity
= Gravity
= Time
Notice that we need to first find the values of velocity to solve this equation. To do that we use the following kinematic formula
Where
= Final Velocity
= Initial Velocity
= Gravity
= Height
Taking h = ymax/2 we get the following formula
To find the value of value of ymax in terms of v0 we use the law of conversation of energy
Now we can substitute the value of ymax
Now using the original equation to find time, we input the value of V1 and find time in terms of V0
Assuming final velocity v is 0 (since at the top velocity is zero)
This gives us total time from bottom to top
To find time from ymax/2 to top we substitute the value of V1
The time he is above ymax/2 is nothing more than the difference between t and t1
To find the required ratio we divide t1 by (t - t1)
Answer:
Plant based fuels comes form renewable source, can be grown anywhere and have lower carbon emissions as compared to fossil fuels. Bio fuels not only help a struggling economy by providing jobs but also helps in reducing greenhouse gases up to much extent by emitting less pollution.
Explanation:
Answer:
The forces of attraction are weak in gases.
Explanation:
Solid-state objects are presented as bodies in a definite form; their atoms are often intertwined into narrowly defined structures, which gives them the ability to withstand forces without apparent deformation. They are generally described as hard as well as resistant, and in them, the forces of attraction are greater than those of repulsion. In the crystalline solids, the presence of small intermolecular spaces gives way to the intervention of the bond forces, which place the cells in geometric forms.
Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place.
Liquid – In a liquid, particles will flow or glide over one another, but stay toward the bottom of the container. The attractive forces between particles are strong enough to hold a specific volume but not strong enough to keep the molecules sliding over each other.
Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles. This means that a gas has nothing to hold a specific shape or volume.
Answer:... The transferred energy causes the resistor to heat up. You can feel this directly if you touch a cellphone charger when you are charging a cell ... The heat energy is enough to cause the filament to glow white-hot which produces light.
Explanation:
