Answer:
SI unit of k (spring constant) = N/m
Explanation:
We have expression for force in a spring extended by x m given by
F = kx
Where k is the spring constant value.
Taking units on both sides
Unit of F = Unit of k x Unit of x
N = Unit of k x m
Unit of k = N/m
SI unit of k (spring constant) = N/m
Answer:
7) order of vector addition B. does not affect the result
8) 13 Newton N = 12 Newton N + A. 1 Newton N
Explanation:
Final velocity

Data & Formula:
. final velocity: vf = ?
. initial velocity : vi = 1.9 m/s
. acceleration : a = 0.060m/s^2
. distance : d = 8.5 km
![vf\text{ = }\sqrt[]{vi^2+2ad}](https://tex.z-dn.net/?f=vf%5Ctext%7B%20%3D%20%7D%5Csqrt%5B%5D%7Bvi%5E2%2B2ad%7D)
Answer:
Explanation:
A ) weight of air + weight of tank = 013.5 + 3.2
= 16.7 kg
volume of air
= 3.2 / 1.225 = 2.61 m³
= volume of water displaced = 2.61 m³
weight of water displaced = 2.61 x 1025
= 2675.25 kg
buoyant force = 2675.25 kg
buoyant force = weight of displaced sea water
= volume of displaced sea water x density
= 15.7 x 10⁻³ x 1025
= 16.0925 kg
net force = buoyant force - weight
= 2675.25 - 16.7
= 2658.55 kg
B ) net force will be in downward direction as weight is higher .
C ) weight of tank + weight of water in it
= 13.5 + 15.7 x 10⁻³ x 1025
= 13.5 + 16.0925
= 29.5925 kg
buoyant force = 16.0925 kg
net force = 29.5925 - 16.0925
= 13.5 kg
D ) net force down wards
From Newton's second law, F= ma
F = 2000 kg x 15 m/s^2 = 30000 N