Answer:
a.
b. decrease
c. 43.5psi
Explanation:
Answer:
a.
Explanation:
from the questions, the car has four tires which support the weight equally.we can conclude that the weight support by each tire is
weight support of each tire =1420/4=355kg.
a. since
we need to determine the force,
the "g" is the acceleration due to gravity which has a constant value of
hence the force on each tire is
Also, since the pressure is giving in psi, we have to convert it to pascal
since 1psi=6895pascal
hence 35psi to pascal is
.
From the expression for pressure
we have
to cm we multiply by
b. The effect of the pressure can be determine from the relationship between the pressure and the area using the pressure formula
hence an increase in the pressure will lead to a decrease in the contact Area
C. if the area ia now converting to meter square
the pressure now is
converting to psi we have
Answer:
1.4719 m per sec
Explanation:
Hello
Kinetic energy is the energy associated with the movement of objects. Although there are many forms of kinetic energy
the formula to use is
where m is the mass of the object and v the velocity
lets see the kinetic energy of the sprinter running
Now, the elephant must have the same kinetic energy
it works only the positive root, so the elephant must to walk to 1.4719 m/s to have the same kinetic energy.
Have a great day
Answer:
Explanation:Newton.s law of cooling states that the rate of cooling of an object is proportional to the difference between its own temperatures and temperature of its surroundings. Mathematically,
where is the heat transfer
is heat transfer coefficient
is the heat transfer surface area
is the temperature of the object's surface
is the temperature of the surroundings
Answer:
71.42857 kgm²
1311.81946 kg
5.082 rad/s
Explanation:
F = Force = 200 N
R = Radius = 0.33 m
= Angular acceleration is 0.924 rad/s²
Moment of inertia is given by
The moment of inertia of the wheel is 71.42857 kgm²
Moment of inertia of a solid cylindrical wheel is given by
The mass of the wheel is 1311.81946 kg
Rotational impulse is given by
Also
The angular speed is 5.082 rad/s