Answer:
45°.
It is a property of the parabolas.. When the angle between a parabola and the x-axis is 45° the range is maximum.
Answer:
angular frequency of the table must be same as the frequency of the projection of the gum on the wall
Explanation:
Since we know that the projection on the wall is the vertical component of the position of the gum on the rotating table
So here we will say
so the angle made by the radius vector depends on the angular frequency of the disc by which it is rotating
So we can say
so here we can say
so here we can say that
angular frequency of the table must be same as the frequency of the projection of the gum on the wall
Answer:
a) Fg = 9.495x10⁻⁶N
b) Fg = 3.908x10⁻⁶N
c)
Explanation:
Given:
m₁ = mass = 3x10⁴kg
r = radius = 1 m
m₂ = 9.3 kg
Questions:
a) What is the magnitude of the gravitational force due to the sphere located at R = 1.4 m, Fg = ?
b) What is the magnitude of the gravitational force due to the sphere located at R= 0.21 m, Fg = ?
c) Write a general expression for the magnitude of the gravitational force on the particle at a distance r ≤ 1.0 m from the center of the sphere.
a) Since R > r, the equation for the gravitational force is:
Here,
G = gravitational constant = 6.67x10⁻¹¹m³/s² kg
Substituting values:
b) Since R < r, the equation for the gravitational force is:
c) The general expression for the magnitude of the gravitational force on the particle at a distance r ≤ 1.0 is the same to b)
The complete equation is: 92238U --> 90234Th + 42He
This type of radiation is alpha decay in which an alpha particle is a Helium nucleus with 2 protons and 2 nuetrons. This nucleus/alpha particle(s) are released to stabilize the radioactive atom, in this case, the 92238Uranium.
The correct order is dashboard> seat belt > airbag.
<h3>What is the momentum?</h3>
- The object's change in momentum is equal to the impulse it experiences. When two objects collide, an impulse occurs, which both causes and equals the change in momentum. This equation states that F • t = m • v.
- Mass in motion is described by momentum, which is the result of an object's mass and velocity. Impulse: An impulse is a force used to change the motion of an object.
- The change in momentum (P) over the change in time (t) equals force (F). And the impulse is equal to the change in momentum (P) (J). The units for momentum and impulse are kg*m/s and N*s, respectively.
- The aggregate of the momentum changes brought on by force is what is referred to as an impulse. A change in momentum is caused by force, not by impulse. Keeping track of the entire amount of force exerted to an object is all that the term "impulse" really means.
a) impulse = change in momentum
Now for all three cases, the change in momentum is the same, so the impulse is equal for all cases.
b) now average force = impulse/time
for the dashboard, time is very less as the person stops suddenly
for seat, belt time is a bit more, and for air bad, time is the greatest
so the average force is the least for airbag.
So the correct order is dashboard > seat belt > airbag.
To learn more about momentum, refer to:
brainly.com/question/402617
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