The answer to this question should be a gravitational force.
A gravitational force is something that sort of attracts two things of mass. This force must never ever pull the objects of mass apart. It must always try to pull them together. So, judging by the question we can tell that the two masses in this situation are the leaf and the ground. When the leaf fell on the ground this was the gravitational force pulling the leaf down so it connects with the ground.
- Marlon Nunez
Answer:
0,33 Volt
Explanation:
v = 340 000 m/s - Initial electron speed
m = 9.1·10⁻³¹ kg - Mass of an electron
W = m·v² / 2 - Initial kinetic energy of an electron
W = 9.1·10⁻³¹·(340 000)² /2 ≈ 5.26 · 10⁻²⁰ J (1)
Q = 1.6·10⁻¹⁹ C - Electron charge modulus
The work of the electric field:
A = Q·V (2)
Equate (2) and (1):
Q·V = W
V - Electric field potential difference
V = W / Q = 5.26 · 10⁻²⁰ / 1.6·10⁻¹⁹ ≈ 0,33 Volt
<span>1080 degrees buddy bye</span>
Answer: c. they will hit the ground at the same time
Explanation:
The volume of both objects is almost the same, so the force of friction will be the same in each one, so we can discard it.
Now, when yo drop an object, the acceleration of the object is always g = 9.8m/s^2 downwards, independent of the mass of the object.
So if you drop two objects with the same volume but different mass, because the acceleration is the same for both of them, they will hit the ground at the same time, this means that the density of the object has no impact in how much time the object needs to reach the floor.
So the correct option is c
Answer:
The pressure in a gas container is 839.44mmHg
Explanation:
Density of Mercury = 13.56g/cm³ = 13556kg/m³
hρg/ P₀
where, g= acceleration due to gravity, 10m/s²
h= height= 8.6cm = 0.086m
= hρg/ P₀
= 0.086 × 13556 × 10
= 11658.16 kgm/ m²s²
= 11658.16 N/m² = 11658.16pa
= 87.4434mmHg
where 1 torr = 1mmHg
= 752torr = 752mmHg
= 752 + 87.4434
= 839.44mmHg