Answer: The average velocity is -0.965m/s
Explanation: The first step is to calculate the two velocities is both directions. A velocity is a distance per unit time.
V=d/ t
=-5.7/2.1
=-2.7m/s
For the other direction the velocity is
V=7.3/9.5
=0.77m/s
The average velocity the add the velocities and divide them by 2.
V=-2.7+0.77/2
V= 0.965m/s
Answer:
B type ii supernova is the right answer
Answer:
a = 6 [m/s^2]
Explanation:
In order to calculate the acceleration of the skier, the following expression of kinematics must be used:
a = (v)/t
where:
v = velocity = 24 [m/s]
t = time = 4 [s]
a = 24/4 = 6 [m/s^2]
<h2>The frequency of driver is 700 Hz</h2>
Explanation:
The frequency of wave in a string is given by the relation
n = 
here n is the frequency
p is the number of antinodes and l is the length of string .
T is the tension in string and m is the mass per unit length
Thus 420 =
I
Now if there is 5 antinodes , the value of p = 5
Thus n = 
II
Dividing II by I , we have
n/420 = 5/3
or n = 5/3 x 420 = 700 Hz
The correct answer is: C. It is the point beyond which neither light nor anything else can escape.
