Answer:
Kinetic energy is given by:
K.E. = 0.5 m v²
Susan has mass, m = 25 kg
Velocity with which Susan moves is, v = 10 m/s
Hannah has mass, m' = 30 kg
Velocity with which Hannah moves is, v' = 8.5 m/s
<u>Kinetic energy of Susan:</u>
0.5 m v² = 0.5 × 25 kg × (10 m/s)² = 1250 J
<u>Kinetic energy of Hannah:</u>
0.5 m v'² = 0.5 × 30 kg × (8.5 m/s)² = 1083.75 J
Susan's kinetic energy is <u>1250 J </u>and Hannah's kinetic energy is <u>1083.75 J</u>.
Since kinetic energy is dependent on mass and square of speed. Thus, speed has a greater effect than mass. As it is evident from the above example. Susan has greater kinetic energy due to higher speed than Hannah.
Answer:
longer than
Explanation:
given,
time of nap = 10 min
speed of orbiting earth = 8000 m/s
c is the speed of light
using the equation of time dilation
now inserting all the values
t' = 10.001 s
on solving the above equation we will get a value greater than 10minutes.
hence, On earth time of nap measured will be longer than 10 min
Models show how the atoms in a compound are connected.
The
heating coils in you toaster during the first five seconds after you turn the
toaster on is Δ K = W + Q.
<span>Your automobile just before you fill
it with gas until you pull away from the gas station at speed v is
ΔK
+ ΔU + ΔEint = W + Q + TMW + TMT</span>
<span>your
body while you sit quietly and eat a peanut butter and jelly sandwich for lunch
is
ΔEint = Q + TET + TER</span>
<span>
your home during five
minutes of a sunny afternoon while the temperature in the home remains fixed is
ΔU = W + Q + TMW + TMT</span>
To solve the problem it is necessary to apply the concepts related to Conservation of linear Moment.
The expression that defines the linear momentum is expressed as
P=mv
Where,
m=mass
v= velocity
According to our data we have to
v=10m/s
d=0.05m
Volume 
t = 3hours=10800s
From the given data we can calculate the volume of rain for 5 seconds
Where,
It is the period of time we want to calculate total rainfall, that is
Through water density we can now calculate the mass that fell during the 5 seconds:
Now applying the prevailing equation given we have to
Therefore the momentum of the rain that falls in five seconds is 
