Answer: heyyy want to talk your question
Explanation:
Answer:
539N
Explanation:
Parameters given:
Mass of person = 66kg
Mass of parachute = 4kg
Downward acceleration = 2.1 m/s²
The total force acting on the system is the sum of the force of gravity and the force due to air acting opposite gravity:
F = mg - F(a)
Where g = acceleration due to gravity
Force is given as:
F = ma
=> ma = mg - F(a)
=> F(a) = mg - ma
F(a) = m(g - a)
m is the mass of the entire sustem
m = 66 + 4 = 70kg
=> F(a) = 70(9.8 - 2.1)
F(a) = 70 * 7.7
F(a) = 539N
The upward force on the open parachute from the air is 539N
So then they get warmed up and can be seen easily
Answer:
False
Explanation:
Think of the electric potential in terms of potential energy. If you imagine a place with high elevation (A) and another one at sea level (B), a ball will roll from high potential to low potential (A-->B).
Everything in our universe wants to reach a lower state of energy if no external force is acted upon it. Every object tends to slow down (friction), a radioactive element dissipates energy (an unstable element releases energy to get to a stable state), water in the clouds comes down to the ground (rain experiencing difference in potential energy).
Electric potential is exactly the same, you just can't see it! It flows from higher voltage (which is a synonym for electric potential) to lower voltage.
<u>Correct Question:</u>
Calculate the distance (in km) charlie runs if he maintains an average speed of 8 km/hr for 1 hour
<u>Answer:</u>
The total distance covered by Charlie is 8 km in 1 hour.
<u>Explanation:</u>
The average velocity as given in the question is,
v = 8 km/hr
Total time taken,
As we know the formula to evaluate the total distance d when the average velocity and time is given;
Hence, the total distance covered by Charlie in 1 hour will be 8 km.
