Answer:
velocity = 8.84 m/s
Explanation:
given data
radius r = 11.9 m
acceleration of gravity g = 9.81 m/s²
static friction μ = 0.67
to find out
how fast can the car go without skidding
solution
we get here velocity that is car go without skidding is express as
force = 
force = μ × mg
μ × mg =
v² = μ × r × g
v = 
..................1
v = 
v = 8.84 m/s
velocity = 8.84 m/s
Answer:
a) E = 1.47 × 10^5 N/C
b) south
Explanation:
The magnitude of an electric field can be defined mathematically as;
E = F/q ........1
Where,
E = magnitude of the electric field
F = electric force
q = charge on the proton
Given;
F = 2.36 × 10^-14 N
Note that charge on a proton is known as Qp = 1.602 × 10^-19 C
q = 1.602 × 10^-19 C
Substituting into equation 1, we have;
E = 2.36 × 10^-14 N/1.602 × 10^-19 C
E = 1.47 × 10^5 N/C
b) The direction of the electric field;
From equation 1
E = F/q ........1
since both electric field and electric force are vector quantity and q is a positive charge (constant), then both the electric field and electric force would be parallel to each other. Therefore the electric field is directed to the south also.
(When a vector is multiplied by a positive constant the direction remains the same)
Friction... Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force
Means it will keep going until acted on by an outside force, in this case friction
I believe it is false because as the ball begins to fall and becomes more distant the speed will become slower
Answer:
a.6533.333 N/m
b.Yes,the spring will be compressed more when the person hops down the road .
Explanation:
Mass of man=80 kg
Spring compressed by x=0.12 m
a.We have to find the force constant of the spring.
Spring constant=
Using the formula
Spring constant,
N/m
Spring constant=
b.The spring will be compressed more when the person hops down the road because when the person hops down then the kinetic energy of person will be converted into potential energy during the road hit.
