Answer:
The wavelength of the light is .
Explanation:
The band separation for a light wave of wavelength is given by
where is the slit separation, and is the distance to the screen.
Solving the above equation of wavelength we get:
Now, in our case
,
and ;
therefore,
which is the 2nd choice from the options given.
Answer:
7650 m.
Explanation:
Ocean floor depth, d is:
d = v * t,
where,
d = the distance from the vessel to the ocean floor (or the depth)
v = 1530 m/s = velocity of the ultrasonic sound
t = t_echo/2 = time that the ultrasonic sound needs to reach the ocean floor
t_echo = 10 s = time that the ultrasonic sound needs to reach the ocean floor and return back to the vessel.
d = v * t
= v * t_echo/2
= 1530 * 10/2
= 7650 m.
Answer:
a) h = 0.0088 m
b) Kb = 794.2J
c) Kt = 0.88J
Explanation:
By conservation of the linear momentum:
By conservation of energy from the instant after the bullet is embedded until their maximum height:
h=0.0088m
The kinetic energy of the bullet is:
The kinetic energy of the pendulum+bullet:
Answer:
a
Explanation:
thats yes according to kinematics
Given:
M=10KG
F=42N
Opposing Force=6N
If we can recall F=ma, we can easily calculate the acceleration by substituting the given variables; but in our case, we have an opposing force. So we have to subtract the opposing force from the horizontal force.
F = ma
42N-8N=10KG x a
34N = 5KG x a; divide both sides by 10KG for a to be sole variable
34kg m/s^2) / 10kg x a (Newtons are sometimes referred to as kg m/s^2)
3.4 m/s^2 = a ; (kg's are cancelled)
Therefor, our acceleration is <em>3.4 m/s^2.</em>