The correct answer is the following.
The forces that act on the piano are: 2) gravitational force acting on the piano (piano's weight). 5) force of the floor on the piano (normal force). 7) force of Chadwick on the piano.
As we see in the picture that I have attached is Chadwick pushing the piano in a horizontal plane. So Chadwick is applying a force that produces an acceleration. It is his force on the piano plus the acceleration of the weight of the piano, it's a gravitational force. This is pure physics applied to an object.
Answer:
Explanation:
This problem is based on conservation of rotational momentum.
Moment of inertia of rod about its center
= 1/12 m l² , m is mass of the rod and l is its length .
= 1 / 12 x 4.6 x .11²
I = .004638 kg m²
The angular momentum of the bullet about the center of rod = mvr
where m is mass , v is perpendicular component of velocity of bullet and r is distance of point of impact of bullet fro center .
5 x 10⁻³ x v sin60 x .11 x .5 where v is velocity of bullet
According to law of conservation of angular momentum
5 x 10⁻³ x v sin60 x .11 x .5 = ( I + mr²)ω , where ω is angular velocity of bullet rod system and ( I + mr²) is moment of inertia of bullet rod system .
.238 x 10⁻³ v = ( .004638 + 5 x 10⁻³ x .11² x .5² ) x 12
.238 x 10⁻³ v = ( .004638 + .000015125 ) x 12
.238 x 10⁻³ v = 55.8375 x 10⁻³
.238 v = 55.8375
v = 234.6 m /s
False , the gas petal makes the speed go up
Answer:
You have to a ruler and use that to out line you diagram it super easy and label what categorys you have and details of what explains that category
Explanation:
The force on the charge is 1.1×10⁻⁸ N.
<h3>What is force?</h3>
Force can be defined as the product of the mass of a body and its acceleration
To calculate the force on the charge, we use the formula below.
Formula:
- F = qvBsin∅............. Equation 1
Where:
- q = charge
- v = velocity
- B = magnetic field
- ∅ = Angle.
From the question,
Given:
- B = 25 mT = 0.025 T
- v = 250 m/s
- q = 3.5 nC = 3.5×10⁻⁹ C
- ∅ = 30°
Substitute the given values into equation 1
- F = (0.025)(250)(3.5×10⁻⁹)(sin30°)
- F = 1.093×10⁻⁸ N
- F ≈ 1.1×10⁻⁸ N
Hence, the force on the charge is 1.1×10⁻⁸ N.
Learn more about force here: brainly.com/question/12970081
