Answer:
kinematics
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion
Borax, also known as sodium borate, sodium tetraborate,
or disodium tetraborate, is an important boron compound,
a mineral, and a salt of boric acid. Powdered borax is white,
consisting of soft colorless crystals that dissolve easily in water.
Its molecular (chemical) formula is <span>
<span>Na₂B₄O₇·10H₂O or Na₂[B₄O₅(OH)₄]·8H₂O .</span></span>
Answer:
Explanation:
Newton's law of gravitation
F = G m₁m₂/ r² , G is universal gravitational constant
= (6.6 x 10⁻¹¹ x 6 x 10²⁴ x 2.65 x 10²²) / (2.9 x 10⁸)²
= 12.478 x 10¹⁹ N
Explanation :
As the ambulance got closer, Marge noticed that the pitch of the siren got higher. This is due to the Doppler's effect.
The siren of the ambulance has a higher pitch when it approaches Marge. When the waves move away from him, it will have a lower pitch.
As the waves come closer to us, the waves become compressed and hence the frequency of the wave increases.
Answer:
The answer is C. 120,000 J.
Explanation: