Answer:
Explanation:
According to the described situation we have the following data:
Horizontal distance between lily pads:
Ferdinand's initial velocity:
Time it takes a jump:
We need to find the angle at which Ferdinand jumps.
In order to do this, we first have to find the <u>horizontal component (or x-component)</u> of this initial velocity. Since we are dealing with parabolic movement, where velocity has x-component and y-component, and in this case we will choose the x-component to find the angle:
(1)
(2)
(3)
On the other hand, the x-component of the velocity is expressed as:
(4)
Substituting (3) in (4):
(5)
Clearing :
This is the angle at which Ferdinand the frog jumps between lily pads
Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than electrons and reside in the center of the atom, which is called the nucleus.Jun 5, 2013-livescience.com
Answer: N=2
Explanation:
We know that at the surface of the earth, value of g=
R
2
GM
At height h above the Earth's surface, the value of acceleration due to gravity g
′
=
(R+h)
2
GM
So it is given that g
′
=
4
g
When the bullet reaches maximum height, acceleration due to gravity is
4
1
th of that at planet's surface.
That implies
4R
2
GM
=
(R+h)
2
GM
→h=R
By conservation of mechanical energy,
R
−GMm
+
2
1
mv
2
=
h+R
−GMm
+0 since velocity is zero at max height. ⇒
2
1
mv
2
=
2R
GMm
v=
R
GM
=
2R
2GM
=
2
1
R
2GM
=
2
1
v
esc
⇒v
esc
=
2
v
⇒N=2