<h2>
Time taken is 0.459 seconds</h2>
Explanation:
We have equation of motion v = u + at
Initial velocity, u = 0 m/s
Final velocity, v = 81 km/hr = 22.5 m/s
Time, t = ?
Acceleration, a = 49 m/s²
Substituting
v = u + at
22.5 = 0 + 49 x t
t = 0.459 seconds
Time taken is 0.459 seconds
Answer:
If R₂=25.78 ohm, then R₁=10.58 ohm
If R₂=10.57 then R₁=25.79 ohm
Explanation:
R₁ = Resistance of first resistor
R₂ = Resistance of second resistor
V = Voltage of battery = 12 V
I = Current = 0.33 A (series)
I = Current = 1.6 A (parallel)
In series
In parallel
Solving the above quadratic equation
∴ If R₂=25.78 ohm, then R₁=10.58 ohm
If R₂=10.57 then R₁=25.79 ohm
Answer:
The potential energy of the electron in the field of the positive proton point charge is U(r) = -qeV(r) = - keqe2/r. The total energy is the sum of the electron's kinetic energy and its potential energy.
Explanation:
In each case the origin is located at the intersection of the axes. The electric potential from a single charge is defined to be zero an infinite distance from the charge, and the electric potential associated with two charges is also defined to be zero when the charges are infinitely far apart.
<u>Given that</u>
time (t) = 10 s ,
(S) = ?
We know that S = ut+ 1/2 a.t² m
since free fall and no air friction,
a = g = 9.81 m/s² ; initial velocity u= 0
S = 0 + [1/2 × 9.81 ×10²]
<em> S = 490.5 m </em>
The distance that they had traveled after four hours is given by:
c 50 miles.
<h3>How to find the distance traveled?</h3>
We are given the a set of points (x,y) in this problem, in which the input and the output are defined as follows:
- Input: x is the number of hours.
- Output: y is the distance traveled, in miles, after a time of x hours.
The endpoints of the segments are as follows:
- (0,0): Initially, 0 miles were traveled.
- (1,30): 30 miles were traveled in one hour.
- (3, 50): 50 miles were traveled in three hours.
- (4,50): 50 miles were traveled in four hours.
Hence, the distance that they had traveled after four hours is given by 50 miles, and option c is the correct option in the context of this problem (how long they had traveled).
More can be learned about distances at brainly.com/question/24316569
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