∆x (displacement) = v - u
where, v is the final position and u is the initial position.
Given, the final position of the object is 0 m and the initial position is 5 m.
∆x (displacement) = v - u
= 0 m - 5 m
= -5 m
Therefore, <u>C: -5m</u> is the correct answer.
Answer:
Explanation:
a. Given that:
mass of first & second piece, 
mass of 3rd piece,
-velocity of first piece(
) and 
as velocity of 2nd piece (
)
Let 
be velocity of 3rd piece=?
#Vessel is at rest before explosion. Considering conservation of linear momentum:
#Dividing both sides by 
#Plug the
values:
#So the magnitude of the third piece is:
Magnitude of the 3rd piece is 10.84 m/s
b. To find direction of the magnitude (as an angle relative to the 
-axis), we find 
. The angle is obtained by getting the tan inverse as:
-The direction of the magnitude (angle relative to the x-axis) is 45°
Answer:
Explanation:
Given that,
Orbital period, T = 42.5 hours = 153000 seconds
The average distance of Jupiter's mass, r = 422,000 km
We need to find Jupiter's mass. The formula for the orbital period is given by :
So, the mass of Jupiter is 
.
Answer:
Yes. Check reason below
Explanation:
Yes the color of materials has a role in regulating the heat. This is because colors vary in their abilities to absorb heat energy.
The ability of colors to absorb heat decreases with a decreasing wavelength. As the wavelength decreases, the color becomes cooler because of a decrease in the rate of heat absorption. Red, Orange, Yellow, Green, Blue, Violet ( In order of decreasing wavelength)
The higher the ability to absorb heat energy, the hotter the body is. Black color absorbs more heat than other colors, hence is hotter than other colors. Colors that have high reflective ability ( ie. reflect back a large portion of the light that falls on them) are a lot cooler than those with high absorptive ability. An example is white ( a combination of all visible lights)
Therefore, in designing the seating of a wheel the color should be highly considered for heat regulation.
