Answer:
9 cm.
Explanation:
The energy used for stretch the spring from 
to 
will be , 
The energy used for stretch the spring from to 
will be , 
using the energy of spring formula ,we find that
Dividing both the equation will get,
Therefore, the natural length of the spring is, 9 cm.
Some substances look alike and the density can help you determine which is which. It also helps to tell which is heavier than the other.
Answer:the answer is true
Explanation:because as u add more coil/wrap more coil around the nail the field get stronger and stronger to attract more nails
Hope this helped
445/100 - 5/4 = 445/100 - 125/100 = 320/100 = 16/5 = 3 1/5.
Answer:
v = 5.15 m/s
Explanation:
At constant velocity, the cable tension will equal the car weight of 984(9.81) = 9,653 N
As the cable tension is less than this value, the car must be accelerating downward.
7730 = 984(9.81 - a)
a = 1.95 m/s²
kinematic equations s = ut + ½at² and v = u + at
-5.00 = u(4.00) + ½(-1.95)4.00²
u = 2.65 m/s the car's initial velocity was upward at 2.65 m/s
v = 2.65 + (-1.95)(4.00)
v = -5.15 m/s
