-- On Earth, 1 kg of anything weighs 9.81 Newtons (2.205 pounds). It doesn't matter what substance comprises the kilogram.
-- Although their weights are identical, any mass of feathers occupies more volume than the same mass of iron, no matter where they happen to be located.
-- Iron is more dense than feathers, and more dense than a lot of other substances as well, too.
Cell phones use RF waves from nearby cell towers. RF waves fall in between FM radio waves and microwaves
Answer:
W = 3.4x0³ J.
Explanation:
The work done by the man is given by the following equation:
(1)
<em>where W: is the work, Ft is the total force and d: is the displacement = 4.25 m.</em>
We need to find first the total force Ft, which is:
<em>where Fm: is the force exerted by the man = 535 N, W: is the weight = m*g*sin(θ), m: is the mass of the man, g: is the gravitational acceleration = 9.81 m/s², and θ: is the angle = 20.0°. </em>
Hence, the work is:
Therefore, the work done by the man is 3.4x10³ J.
I hope it helps you!
Rock-forming minerals because they formed the earths crust
Answer:
F = 2 [N], choose option (2)
Explanation:
The principle of impulse is defined by the following expression:
Impulse = Force * Time
Force = force acting [N] or [kg*m/s^s]
Time = time during the impulse [s]
Replacing:
Impulse = 10[kg*m/s^2] * 10 [s]
Impulse = 0,1 [kg*m/s]
Now with this impulse, we can find the force for the new time.
F = Impulse/Time
F = 0.1[kg*m/s] / 0.05[s]
F = 2 [N]
