Answer:
A principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
Explanation:
<u>Point of correction</u>
Density of water is 
not 100 as provided, it may be typo
Answer:
Explanation:
Buoyant force of water (Weight difference) is 96-30=66 N
Buoyancy force=
where 
is the density of water, g is acceleration due to gravity whose value is provided as 
and v is the volume of the body
hence substituting 66 for buoyancy force, for density of water and finding the unknown value of volume, v
66=1000*10*v
Answer:
69.2 Nm
Explanation:
Since torque, τ = Fd where F = force and d = distance of force from center of wheel.
The torque due to the clockwise force F' = 43.2 N at a distance d' = radius of wheel = 2.42 m (since it is at the end of the wheel) is τ' = F'd' = 43.2 N × 2.42 m = 104.544 Nm. Since this force is counterclockwise, the torque is positive. So, τ' = 104.544 Nm
The torque due to the force F" = 67.8 N at a distance d" = 0.522 m from center of wheel is τ" = F"d" = 67.8 N × 0.522 m = 35.3916 Nm. Since this force is counterclockwise, the torque is negative. So, τ" = -35.3916 Nm
The net torque on the wheel τ = τ' + τ"
= 104.544 Nm + (-35.3916 Nm)
= 104.544 Nm - 35.3916 Nm
= 69.1524 Nm
≅ 69.2 Nm
Answer:
Explanation:
Given:
- length of the concrete slab,
- temperature of observation,
- we've the coefficient of linear expansion for concrete,
- lower temperature limit,
- upper temperature limit,
<u>Change in length due to temperature can be given as:</u>
<u>Now at temperature 15°C:</u>
Hence the expansion crack between the slabs at this temperature must be:
your answer i believe would be c because light waves, mechanical waves, exc. all carry charged particals.
