Answer:
a. 150 N
Explanation:
Gravitational Force: This is the force that act on a body under gravity.
The gravitational force always attract every object on or near the earth's surface. The earth therefore, exerts an attractive force on every object on or near it.
The S.I unit of gravitational force is Newton(N).
Mathematically, gravitational force of attraction is expressed as
(i) F = GmM/r² ........................ Equation 1 ( when it involves two object of different masses on the earth)
(ii) F = mg ............................... Equation 2 ( when it involves one mass and the gravitational field).
Given: m = 17 kg, g = 8.8 m/s²
Substituting into equation 2,
F = 17(8.8)
F = 149.6 N
F ≈ 150 N.
Thus the gravitational force = 150 N
The correct option is a. 150 N
Answer:
The maximum height of the ball will be "16.53 m".
Explanation:
Given that,
As we know,
The initial as well the final height on the ball will be same after it reaches it's maximum height.
then,
⇒
where,
hence,
The max height of the ball will be:
⇒
Answer:
The answer is A. Must travel throughout a medium.
Explanation:
The transmission of sound depends on the existence of a material medium (solid, liquid, air particles) where the vibration of the molecules are perceived as a sound wave, which are converted into mechanical waves in the human ear, to be later perceived by the brain.
hope this helps
To solve this problem we will apply the principle of energy conservation. Here we have that the gravitational potential energy must be equal to the kinetic energy of the body. So,
Here,
m = mass of projectile
G = Gravitational Universal constant
M = Mass of the planet
R = Total height from center of mass of the planet
v = Velocity
Rearraning to find the velocity we have,
Our values are given as,
Replacing we have,
Therefore the initial speed of the projectile must be 4531.12m/s
Answer:
the sum of the mass numbers on the reactant side must equal the sum of the ,was numbers on the product side.
Explanation:
This is the answer. I'm not sure