Answer:c
Explanation:ganglandd
Answer:
the pressure difference will be ΔP= P₂ - P₁ =29348.64 Pa
Explanation:
from Bernoulli's equation
P₁ + ρgh₁+ 1/2ρv₁²= P₂ + ρgh₂+1/2ρv₂²
where P = pressure , ρ= density , g= gravity , h= height , v=flow speed and 1 and 2 denote first and second segment respectively
then since the pipe is horizontal there is no difference in height (h=h₁=h₂) , thus
P₁ + 1/2ρv₁²= P₂ + 1/2ρv₂²
the pressure difference ΔP= P₂ - P₁ will be
ΔP= P₂ - P₁ = 1/2ρv₁² - 1/2ρv₂² = 1/2*ρ* (v₁² - v₂²)
replacing values
ΔP= 1/2*ρ* (v₁² - v₂²) = 1/2 *1145 kg/m³ * [(7.33 m/s)² - (1.57 m/s)²] = 29348.64 Pa
ΔP= 29348.64 Pa
The correct answer to the question is - A) Object's kinetic energy is transformed into mainly heat energy.
EXPLANATION:
The friction is the opposing force which acts tangentially between two surfaces when there is a relative velocity between them.
As per the question, the moving object comes to rest after the application of frictional force.
Initially the object is in motion.Hence, the energy possessed by the moving object is kinetic energy.
When frictional force is applied on the moving object, the kinetic energy of the moving object will be converted into mainly heat energy. It is due to the fact that friction causes heat production between two surfaces in contact.
Hence, correct option will be that the object's kinetic energy is transformed into mainly heat energy.
B. Sulfuric acid is a strong oxidizing agent.
C. Sulfuric acid is dangerous to living organisms.
D. Sulfuric acid has little effect on metals
The object falling near the Earth's surface is rarely under free fall because of the air resistance experienced by the body.
Explanation:
According to the Newton's law of gravitation, each and every body applies an attractive force on another body kept at a particular distance. This force experienced by the body is directly proportional to the product of the masses of the body and inversely proportional to the square of distance between them.
The Earth also pulls the body towards it by the action of the attractive gravitational force. When a body falls towards the Earth under the action of the gravitational force, it moves with an acceleration. The acceleration of the body when it falls freely under the action of gravity is termed as the free fall.
The earth's atmosphere plays a significant role in the motion of the object as it falls under the gravity. The air resistance experienced by the object reduces the acceleration of the object and therefore, the object is no longer under the free fall.
Thus, The object falling near the Earth's surface is rarely under free fall because of the air resistance experienced by the body.
Learn More:
1. A 30kg block being pulled across a carpeted floor brainly.com/question/7031524
2. Net force acting on a 200kg refrigerator brainly.com/question/7031524
3. Max and Maya are riding on a merry-go-round brainly.com/question/8444623
Answer Details:
Grade: High School
Subject: Physics
Chapter: Acceleration
Keywords:
object, acceleration, gravitation, rarely, free, fall, gravitation, newton's, air, resistance, atmosphere, object.