Answer:
Our estimate not done correctly because the width was unrealistic.
Explanation:
Given that,
Length = 6 m
Width = 0.5 m
We need to calculate the area of rectangular floor
Using formula of area
![A=l\times w](https://tex.z-dn.net/?f=A%3Dl%5Ctimes%20w)
Where, l = length
w= width
Put the value into the formula
![A=6\times0.5](https://tex.z-dn.net/?f=A%3D6%5Ctimes0.5)
![A=3\ m^2](https://tex.z-dn.net/?f=A%3D3%5C%20m%5E2)
We need to find why this estimate not done correct
Using given data
We can say that,
We assume width was unrealistic.
The length of room is 6 m.
We know that,
![1\ m=3.28\ feet](https://tex.z-dn.net/?f=1%5C%20m%3D3.28%5C%20feet)
So, the length would be 20 feet.
The width of room is 0.5 m.
The width of room would be 1.64 feet.
So, the area will be
![A=20\times1.64](https://tex.z-dn.net/?f=A%3D20%5Ctimes1.64)
![A=32.8\ feet^2](https://tex.z-dn.net/?f=A%3D32.8%5C%20feet%5E2)
Hence, Our estimate not done correctly because the width was unrealistic.
Answer:
The girl will move with constant velocity
Explanation:
If after a certain time t_0 the velocity of the girl is v_0 =gt_0 and the upward force on the girl due to rope is mg ,where g is gravitational acceleration. Then the girl will move down with the constant velocity v_0 .
The girl will move with constant velocity,as explained above.
Answer:
c Like/same signs
Explanation:
A repelling force occurs between two or more charged objects with the charges are of like or same sign.
- According to Coulombs law, like charges repel on another, unlike charges attracts on another.
- If a positive charge comes into the vicinity of another positive charge, there will be repulsion.
- When oppositely charge species are brought near each other, there is an attraction.
Therefore, repulsion occurs when like charges are brought close to each other.
Answer:
Explanation:
As per the Kepler's law of planetary motions :
1- The orbits are of elliptical shape having two foci and Sun is located on one foci.
2- The line segment that joins a planet and the Sun sweeps out equal are at equal interval of time.
3- The orbital period square is directly proportional to the cube of semi major axis of its orbit.
Kepler's law are applied on each of the planets of our solar system as the distance of the Sun from the planet is calculated through this.
For example : from Kepler's first law we can see the eccentricity of the Earth's orbit is 0.0167.