Answer:
a.)alkene
b.)alkane
d.)alkana
about c..I think there is something wrong with the question
Creativity because its something cool
Answer:
The initial speed of the ball is 3.93 m/s.
Explanation:
It is given that,
A ball is thrown horizontally from a height of 19 m, h = 19 m
Let u is the initial speed of the ball so, its final velocity, v = 5u
Using third equation of motion as :
u = 3.93 m/s
So, the initial speed of the ball is 3.93 m/s. Hence, this is the required solution.
Answer:
The correct answer is the number 4. A wave on a pond is a mechanical wave which requires a medium to travel.
Explanation:
Mechanical waves are those that need a material medium to propagate. The waves of the sea and the waves that we produce on a guitar string, the sound, are examples of mechanical waves. Electromagnetic waves are energetic pulses capable of propagating in a vacuum. This way, a wave on a pond is a mechanical wave which requires a medium to travel.
Answer:
v = √[ GM / (R + 160934.4 meters) ]
Explanation:
The speed of an object in a circular orbit (in meters per second) is
v = √(GM/r)
where
G = 6.6743e-11 m³ kg⁻¹ sec⁻²
M = the sum of the masses of the planet and the satellite in kilograms
r = the radius of the circular orbit in meters
If the planet's radius, R, is 100 miles, then
v = √[ GM / (R + 160934.4 meters) ]
