Answer:
(a)158.9 N up the ski slope
(b) 0.19
Explanation:
PLEASE MARK ME AS BRAINLIEST
F^k=MkN
158.9=817.7 M*s
Mk=0.19
a)The distance in the east direction and distance in the north direction will be 1.302 km and 7.386 km respectively.
b)Both the routes have the same distance.
<h3>What is displacement?</h3>
Displacement is defined as the shortest distance between the two points.
Distance is the horizontal length covered by the body, while displacement is the shortest distance between the two points. Displacement is a vector quantity.
Given data;
Distance,d = 7.5 km
Angle,θ=10° E of N
From the triangle ABD and ABC it is obtained that;
AC = AB sinθ
AC=7.5 sin(10°)
AC=1.302 km
CB = 7.5 cos 10°
CB = 7.386 km
AC is the distance in the east direction = 1.302 km
CB is the distance in the north direction = 7.386 km
Both the routes have the same distance. Hence you still arrive at the same point if the East and North legs are reversed in order.
Hence the distance in the east direction and distance in the north direction will be 1.302 km and 7.386 km respectively.
To learn more about displacement, refer to the link: brainly.com/question/10919017.
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Answer:
15.782828 Miles
if that isnt what your asking for please tell me
Explanation:
<span>We'll use the following formular
E = Kq / r^2
Since the electric field is 386 N/C midway between the charges, r = 1/2 * 16 = 8 cm = 0.08m.
So we have 386 = (8.998 * 10^(9) * q) / (0.08)^2
386 * 0.0064 = 8.998 * 10^(9) * q
q = (386 * 0.0064)/ 8.998 * 10^(9)
q = 2.4704/ 8.998 * 10^(9)
q = 2.754 * 10^(-10)</span>
The speed of the elevator at the beginning of the 8 m descent is nearly 4 m/s. Hence, option A is the correct answer.
We are given that-
the mass of the elevator (m) = 1000 kg ;
the distance the elevator decelerated to be y = 8m ;
the tension is T = 11000 N;
let us determine the acceleration 'a' by using Newton's second law of motion.
∑Fy = ma
W - T = ma
(1000kg x 9.8 m/s² ) - 11000N = 1000 kg x a
9800 - 11000 = 1000
a = - 1.2 m/s²
Using the equation of kinematics to determine the initial velocity.
² = ² + 2ay
= √ ( 2 x 1.2m/s² x 8 m )
= √19.2 m²/s²
= 4.38 m/s ≈ 4 m/s
Hence, the initial velocity of the elevator is 4m/s.
Read more about the Equation of kinematics:
brainly.com/question/12351668
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