Answer:
All of the above. If you had to pick one it would be D.
Explanation:
The sun gives off many kinds of radiation other than light and heat it also Emits radio waves ultraviolet rays and x-rays
Answer:
Box A
Explanation:
Let mass of each wooden box =m
Density of box A=
Density of box B =

Density,


Density of inversely proportional to volume.
The volume of box with smaller density is larger than the volume of box with large density.

When the boxes are submerged under water.
Then, the buoyant force=
Where V=Volume of displace fluid.
Density of fluid
Buoyant force of box A=
Buoyant force of box B=
Force=Buoyant force


Acceleration is directly proportional to volume.
Therefore,the box with large volume has greater acceleration.
Hence, the box A has greater acceleration.
Answer:
4.5 meters
Explanation:
3 meters to his friend's house. +3
Halfway back. +1.5
3+1.5
=4.5
4.5 meters in total
Answer:
u = 1.77 m/s
Explanation:
Conservation of momentum
2250(10.3) + 3160u = (2250 + 3160)(5.32)
u = 1.77 m/s
Force D.
Gravity points downward.