Answer:
<em>The cliff is 5916.75 m far</em>
Explanation:
Echo: This is a sound heard after the reflection of sound wave from a plane surface.
v = 2x/t........................... Equation 1
making x the subject of the equation above,
x = vt/2........................... Equation 2
Where v = speed of sound in air, x = distance of the cliff, t = time to produce an echo
<em>Given: t = 34.50 s,</em>
<em>Constant: v = 343 m/s</em>
<em>Substituting these values into equation 2,</em>
<em>x = 343×34.5/2</em>
<em>x = 5916.75 m.</em>
<em>Thus the cliff is 5916.75 m far</em>
Answer:
Explanation:
d = Diameter of typical neutron star = 20 km = 20000 m
D = Distance between Earth and Moon =
Here, so we use small angle approximation
The angular diameter of the neutron star would be from Earth.
Answer:
weight of rod =weight of liquid displaced
mass of the rod ×g =mass of liquid displaced ×g
(g cancelled out)
mass of the rod =mass of liquid displaced
density of rod ×volume of rod =density of liqiud ×volume of liquid displaced
O×cross section area of rod ×height of rod =density of liquid ×Cross section area of rod ×height of rod under the surface
O×L=density of liquid ×(L-h)
then density of liquid =OL/(L-h) shown as required
<span>You are further away from the center of the Earth. Your weight depends on the inverse of the distance squared. If you get 0.1% further away, you would weight about 0.2% less.</span>
Answer: depends on what your nervous about
Explanation:tell me what your nervous about