Answer:
Part 1)
E = 10200 Cal per day
Explanation:
Part 1)
Small mouse used the energy of 3 Cal
mass of the mouse = 20 g
so energy used per day per unit of mass is given as
Now for a person of mass 68 kg the energy is
per day
Part 2)
Resting power means the rate of energy consumed by the body while we are not doing any work and all that energy is consumed for several biological process.
Young child
your partner would want you to be happy, and a young child has the other parent and might not even remember the parent who passed..
Answer:
Yes
Explanation:
Non uniform acceleration is any acceleration that is not constant.
If you look at the graphs I have drawn in the above picture, the first two graphs shows a uniform acceleration.
The first graph is a positive acceleration, which means that the object is moving faster and faster at a constant rate. The second graph shows a deceleration, or negative acceleration, which means that the object is moving slower and slower at a constant rate.
For velocity- time graphs, acceleration can be seen by its gradient. So if the slope of the graph doesn't change, it has a uniform acceleration.
Graph 3 shows zero acceleration since the object is moving at a constant velocity (or speed). Thus, the object does not acceleration.
Graphs 4-7 shows a non uniform acceleration.
In graph 4, the object has a decreasing acceleration since the gradient of the graph is decreasing. This can be seen by the slope getting gentler and gentler.
Graph 5 shows an increasing deceleration, since the graph is getting steeper and steeper and the velocity is decreasing with time.
Graph 6: increasing acceleration
Graph 7: decreasing deceleration
Answer:
the ratio Kf : Ki is 1 / 4 or 1 : 4
Explanation:
Given the data in the question;
Since this is a perfectly inelastic collision, momentum is conserved;
=
Now for BLOCK 1
mass = M₁ = M
KE = K
mv₁² = K
we solve for v₁
mv₁² = 2K
v₁ = √( 2K / m )
for BLOCK 2
mass = M₂ = 3m and since its at rest v₂ = 0
Now after the collision; Total mass = m + 3m = 4m
KE = K
( 4m )v² = K
(2m)v² = K
v = √(K / 2m)
so since =
[m₁ × v₁] + [m₂ × v₂] = ( m + 3m ) × v
so
[ m₁ × √( 2K / m ) ] + [ m₂ × 0 ] = ( m + 3m ) × [ √(K / 2m) ]
[ m × √( 2K / m ) ] = 4m × [ √(K / 2m) ]
square both side
m² × 2K / m = (4m)² × K / 2m
m² × 2K / m = 16m² × K / 2m
m × 2K = 8m × K
2K = 8K
K = 2K / 8
K / K = 2 / 8
K / K = 1 / 4
Therefore, the ratio Kf : Ki is 1 / 4 or 1 : 4