Answer:
C. buried feelings in the unconscious
Explanation:
Hope that helps!
I think the answer is 2283g
Answer:
C) 4 seconds
Explanation:
The height of an object is given by the following formula:
To find the flight time you equal the height s to zero:
Then, you have a quadratic equation of the form:
you use the quadratic formula in order to find the roots of the polynomial:
you take the positive value of t because this has physical meaning.
Hence:
the time is C) 4 seconds
Answer:
891 excess electrons must be present on each sphere
Explanation:
One Charge = q1 = q
Force = F = 4.57*10^-21 N
Other charge = q2 =q
Distance = r = 20 cm = 0.2 m
permittivity of free space = eo =8.854×10−12 C^2/ (N.m^2)
Using Coulomb's law,
F=[1/4pieo]q1q2/r^2
F = [1/4pieo]q^2 / r^2
q^2 =F [4pieo]r^2
q = r*sq rt F[4pieo]
q=0.2* sq rt[ 4.57 x 10^-21]*[4*3.1416*8.854*10^-12]
q = 1.42614*10^ -16 C
number of electrons = n = q/e=1.42614*10^ -16 /1.6*10^-19
n =891
891 excess electrons must be present on each sphere
So, acceleration is the change of velocity in time. If no vectors are used, one can use speed:
a = (final speed - start peed)/ time = 10/5= 1 m/s^2,
Notice that the units are m/s^2, or (m/s)/s. That is speed (m/s) per unit time (s)