Answer:
Factor of 1.1
10%
Explanation:
The following table presents Samantha's change in height with age:
The factor F by which her height changed is:
The percentage increase in her height is:
Answer:
C
Explanation:
Work is when force is applied on an object and the object moves a certain distance as a result of that force.
Answer:
F = 5.83 10⁻¹⁷ N
Explanation:
The electric force is given by
F = k q₁ q₂ / r²
With Gauss's law electric field flow is equal to the charge inside the Gaussian surface, if we make a spherical surface around each drop, the force independent of small deformations due to air resistance
q₁ = q₂
F = 8.99 10⁹ (29 10⁻¹²)² / (0.36 10⁻²)²
F = 5.83 10⁻¹⁷ N
As the two drops have a charge of the same sign they repel
The car’s momentum after 4.21s is 24617.4 kgm/s
<h3>
Newton's Second Law of Motion.</h3>
Newton's second law state that, the rate of change of momentum, is directly proportional to the applied force.
Given that a 1200 kg car passes traffic light at a velocity of 10.2 m/s to the north and accelerates at a rate of 2.45 m/s^2. To calculate the car’s momentum after 4.21 s, Let us first list all the parameters involved.
- Acceleration a = 2.45 m/s²
From Newton's second law,
F = (mv - mu) / t
ma = (mv - mu) / t
Substitute all the parameters into the formula above.
1200 × 2.45 = ( mv - 1200 × 10.2 ) / 4.21
2940 = ( mv - 12240 ) / 4.21
Cross multiply
12377.4 = mv - 12240
Make mv the subject of the formula
mv = 12377.4 + 12240
mv = 24617.4 kgm/s
Therefore, the car’s momentum after 4.21s is 24617.4 kgm/s
Learn more about Momentum here: brainly.com/question/25121535
#SPJ1
A. Direction
Speed is just distance divided by time, but velocity is displacement divided by time and displacement has direction. Speed will always be positive, but velocity can be either positive or negative.