Answer:
Organelles
Explanation:
I learned this in science.
The weight of a 75 kg person on Earth, which has an acceleration due to gravity of 9.8m/s², is 735N.
CALCULATE WEIGHT:
Weight is a force, hence, measured in Newton. It is a function of an object's mass in relation to gravity.
Weight of an object can be calculated using the following formula:
W = mg
Where;
- W = weight (N)
- m = mass (kg)
- g = acceleration due to gravity (m/s²)
The weight of the person in this question can be calculated as follows:
W = 75 × 9.8
W = 735N
Therefore, the weight of a 75 kg person on Earth, which has an acceleration due to gravity of 9.8m/s², is 735N.
Learn more about weight at: brainly.com/question/18554478
Answer:
14.2 m/s
Explanation:
Given data:
Speed of the stream, v₁ = 7.1 m/s
let the cross section area at initial point be A₁
now area at the second point, A₂ = (1/2)A₁ = 0.5A₁
now, from the continuity equation, we have
A₁v₁ = A₂v₂
where, v₂ is the velocity at the narrowed portion
thus, on substituting the values, we get
A₁ × 7.1 = 0.5A₁ × v₂
or
v₂ = 14.2 m/s
The maximum force of static friction is the product of normal force (P) and the coefficient of static friction (c). In a flat surface, normal force is equal to the weight (W) of the body.
P = W = mass x acceleration due to gravity
P = (0.3 kg) x (9.8 m/s²) = 2.94 kg m/s² = 2.94 N
Solving for the static friction force (F),
F = P x c
F = (2.94 N) x 0.6 = 1.794 N
Therefore, the maximum force of static friction is 1.794 N.
Answer:
Measurements are an important part of comparing things, as they provide the basis on comparing objects to other objects. Measurements allow us to recognize three hours and see how it's shorter than five hours, without having to observe the hours passing by themselves.
