Answer:
F = 231.77N
Explanation:
Given the following data
Distance of Hunter's shoulder (d) = 3.16cm = 0.0316m
mass of bullet (m1) = 0.0137 kg
velocity of bullet (v1) = 546 m/s
mass of rifle(m2)= 3.82 kg
Velocity of rifle (V2) = 1.958167539 m/s
Momentum = MV
Momentum is conserved
Since we are looking for the force exerted on the shoulder by the rifle
Work done = Force × distance (F×d)
The rifle possessed kinetic energy = 1/2mV²
Therefore, work done = kinetic energy
F×d = 1/2mv²
F = 0.5mv²/d
By substitution we have
F = 0.5×3.82×1.9582²/0.0316
F = 7.324/0.0316
F = 231.77N
B: a change in size
C: a change in color
D: the formation of a liquid
E: the formation of a precipitate
The indicators that a chemical reaction is occurring include:
A: the formation of bubbles
C: a change in color
D: the formation of a liquid
E: the formation of a precipitate are all correct
Formation of Bubbles (Gas Evolution): The production of gas bubbles can signify a chemical reaction. This often happens when reactants combine to release a gaseous product, such as in the reaction of an acid with a carbonate, producing carbon dioxide.
Change in Color: A noticeable change in color can indicate a chemical reaction. It suggests that the arrangement of atoms in the molecules has changed, leading to the absorption or emission of specific wavelengths of light.
Formation of a Precipitate: A precipitate is an insoluble solid formed when two solutions are mixed. It suggests that a chemical reaction has occurred because the reactants have combined to create an insoluble product.
The indicators that a chemical reaction is occurring include all the following
the formation of bubbles, a change in color, the formation of a liquid and the formation of a precipitate
These are common signs of a chemical reaction. A change in size can also be an indicator in some cases, especially if it accompanies the formation of a gas (bubbles).
Learn more about chemical reaction here
#SPJ3
the load distance is approximately 0.2 meters or 20 cm. To calculate the load distance in this scenario, we can use the principle of moments, which states that the sum of clockwise moments about a point is equal to the sum of counterclockwise moments about the same point when an object is in equilibrium.
In this case, we have two forces:
1. A known force of 325 N applied at a distance of 40 cm (0.4 meters) from the point of interest.
2. An unknown force of 650 N applied at an unknown distance, which we need to find.
Let's assume the unknown distance is "d" meters.
Using the principle of moments:
Clockwise Moment = Counterclockwise Moment
(325 N) * (0.4 m) = (650 N) * (d m)
Solving for "d":
d = (325 N * 0.4 m) / 650 N
d ≈ 0.2 meters
So, the load distance is approximately 0.2 meters or 20 cm.
To know more about moments:
#SPJ1
Answer:
the range or the ball is 48.81 m
Explanation:
given;
Nicole throws a ball at 25 m/s at an angle of 60 degrees abound the horizontal.
find:
What is the range of the ball?
solution:
let Ф = 25°
Vo = 25 m/s
consider x-motion using time of fight: x = Vox * t
where x = R = range
t = 2 Voy
g
R = Vo² sin (2Ф)
g
plugin values into the formula:
R = (25)² sin (2*25)
9.81
R = 48.81 m
therefore, the range or the ball is 48.81 m
4.8miliseconds broooo.
.
...
.....
..
_______________________________________
Extra info related to the question :-
What is a rationlising factor ?
If the product of two irrational numbers is a rational number then each of the the two is rationalising factor of the other.
What is the purpose of rationilising the denominator ?
If the denominator of a fraction is irrational it is somewhat difficult to locate the fraction on number line. So, to make it easy we need to rationalise the denominator.
How to rationalise the denominator ?
1) Consider the denominator of the fraction.
2) Then multiply the numerator and denominator with rationalising factor of the denominator.
_______________________________________
......
...
....
..............
...............
Answer:
Option 3) Constructive And destructive interference of light waves
Explanation:
When the light is incident on a soap bubble of certain thickness it constructively interferes for wavefronts which are in phase to produce white light and when the wavefronts are out of phase, they undergo destructive interference to produce a series of colors. Thus, interference is the reason.
As it was categorized in the physics category it must be the mechanical power.
Power is basically the amount of work done per unit time or in simpler words the amount of energy transferred per unit time.
The SI unit for power is Watt. Which is basically J/s or Nm/s as wor has the unit of Nm.
In electrical components power can also be categorized as the amount voltage supplied multiplied by the current passed through the component.
Answer: E3 > E1 > E2 = E4
Explanation: