Explanation:
Using kinematics,
s = ut + 0.5at².
We have s = 35.0m, t = 0.50s, a = 2.80m/s².
Substitute in the variables, we have u = 69.3m/s.
This u is only the initial velocity at t1. To find the velocity at t0, we apply a different kinematics equation with different values:
We have t = 5.00s, a = 2.80m/s², v = 69.3m/s.
Using kinematics,
v = u + at.
Substitute in the variables, we have u = 55.3m/s.
Hence the car's initial velocity is 55.3m/s.
You would multiply the 2 and the 103 together to have one number to work with rather than one equation to make up another equation. You would do the same with 1.2 and 103. Multiply the results with their velocity (206 and 123.6), like so. 206*14 and 123.6*21. From this, you would get 2884 and 2595.6. Add them together and divide that answer by three. The answer should be 2739.8.
Hope this helps!
Answer:
The correct answer is: A. salt
Explanation:
The salt corresponds to sodium chloride, whose chemical formula is NaCl. A compound is defined as that substance formed by a combination of 2 or more atoms.
Answer:
Explanation:
When physical pendulum is a system of rod and sphere then we will have
so we will have
so we will have
since mass of ball is much higher than the mass of rod
so we have
now when we use the rod as physical pendulum then we have
M = 0
so we have
so its time period is given as
The formula that we will be using is:
Felec = qE = mg => E = mg/q
So using the formula of E:
E = (0.014kg)(9.8 m/s^2) / -4.0*10^-6C = 34,000 N/C
This is the magnitude of the field. The direction must be downward to give an upward force on a negative charge.