Answer:
0.51 m
Explanation:
Using the principle of conservation of energy, change in potential energy equals to the change in kinetic energy of the spring.
Kinetic energy, KE=½kx²
Where k is spring constant and x is the compression of spring
Potential energy, PE=mgh
Where g is acceleration due to gravity, h is height and m is mass
Equating KE=PE
mgh=½kx²
Making x the subject of formula
Substituting 9.81 m/s² for g, 1300 kg for m, 10m for h and 1000000 for k then
Answer:
511.545 Newtons
Explanation:
So 1 pound=4.44822 Newton’s so 115 times 4.44822 is 511.5453, then round it to get 511.545 Newtons.
Answer:
h = 1.22 m
Explanation:
Given:
Pressure in the vein = 12200 Pa
Specific gravity of the liquid = 1.02
now,
the pressure due to a fluid is given as:
P = pgh
where,
P is the pressure,
ρ is the density of fluid = specific gravity x density of water = 1.02 x 1000 kg/m³
ρ = 1020 kg/m³
g is the acceleration due to the gravity = 9.81m/s²
h is the height
thus,
h = P/pg =
<span>The statement, Quantities must
have different units before they can be added or subtracted, is false. <span>You need to note when you add or subtract units, they
must be first homogenous or the same. In conversion factors, always check for
the units. Suppose that you are given the area of a certain house which is
164m2. You are asked to find it in square feet. You will need to multiply
0.305m by itself to get m2. You have (0.305m)^2 is equal to 0.093025ft2. Now
you have an equivalent factor of 1ft2 is equal to 0.093025ft2. After that,
divide 164m2 by 0.093025ft2 and you will get 1762.97ft2. </span></span>