Answer:
The Average velocity is 750m.
Explanation:
1miles is equal to 3km and 3km is equal to 3000m so a.v = 3000/4= 750m.
None of the choices is correct.
If two runners take the same amount of time to run a mile,
they have the same average speed. But their velocities
are not the same unless both runners begin and end their
run at the same points.
Speed is (distance covered) divided by (time to cover the distance).
Velocity is not. It's something different.
'Velocity' is not just a bigger word for 'speed'.
Physical properties are:
-odor
-shape
-texture
-hardness
Texture is the one which is responsible fo how something feels.
Answer:
-47 J
Explanation:
Given that,
Heat loss = -76 J (negative for loss)
Work done by the surroundings = -29 J
We need to find the change in internal energy of a system.
The first law of thermodynamics is given by :
W is work done by the system
Putting all the values,
Hence, the change in internal energy is -47 J.
Blue bounces off the paper
