Answer:
6. Acceleration = 4.74 m/s^2
7. Centripetal force = 40.5 N
Explanation:
Problem 6.
Recall that the centripetal acceleration is defined as: , where V is the object's tangential velocity, and r the radius of the circular motion. Therefore, in or case, the centripetal acceleration would be:
which we can round to 4.74 m/s^2 (option b in your list)
Problem 7.
Now we need to find not just the centripetal acceleration using the same formula as above, but then the centripetal force.
Now we calculate the centripetal force by multiplying this acceleration times the mass of the object following the definition of force as mass times acceleration:
Centripetal force = 5.0 kg * 8.1 m/s^2 = 40.5 N
The answers comes in Newtons (N)
MA = (Effort Distance)/(Effort Resistance) = L/H
L = MA * H = 5 * 8" = 40"
Ohms law is V = IR
from this we can rearrange so that I or current is the subject
I = V/R
so if both V and R are doubled, we can represent it as such
I = 2V/2R
The 2s will cancel out hence they effect on the current is nil
Answer:
one of the characteristics of a mammal is their several hollow bones another is their three chambered heart and the last is highly developed nervous system
Explanation:
the reason i picked those three is because not all mammals live their life on land and also mammals font have internal fertillization when they are done they take care of their babies and when they grow up they live their own life
(a) 44.7 m/s
We can find the final velocity of the car by using the SUVAT equation:
where
v is the final velocity
u = 0 is the initial velocity (the car starts from rest)
is the acceleration
is the displacement
Solving for v,
(b) 80 s
We can find the time it takes for the car to cover 1.6 km by using the following SUVAT equation:
where in this case we have
d = 1.6 km = 1600 m is the displacement
is the acceleration
u = 0
t is the time
Solving for t, we find: