Answer:
C. 1.4 m/s
Explanation:
Energy is conserved:
Initial energy = final energy
At P, the pendulum has only gravitational potential energy.
At Q, the pendulum has only kinetic energy.
PE = KE
mgh = ½mv²
v = √(2gh)
Given h = 0.1 m:
v = √(2 × 9.8 m/s² × 0.1 m)
v = 1.4 m/s
We know, density = mass /volume
Here, m = 10 g
v = 2.5 mL = 2.5 cm³
Substitute their values,
density = 10/2.5
<span>d = 4 g/cm³
</span>
In short, Your Answer would be <span>4 g/cm³</span>
Hope this helps!
Answer:
Explanation:
We can solve the problem by using Snell's law:
where
n1 = 1.33 is the index of refraction of the first medium (water)
n2 = 1.00 is the index of refraction of the second medium (air)
is the angle of incidence of the wave in water
is the angle of refraction of the wave in air
Solving for the angle of refraction,
Explanation:
the spped of that we can't measure with own that measure a machine is called
The cathode and anode are hooked up to an electrical circuit The chemical reactions in the battery causes a build up of electrons at the anode. This results in an electrical difference between the anode and the cathode. Hope this helps :)
