Answer:
2.57142857143 m/s
Explanation:
= Mass of Danny = 45 kg
= Mass of Erica = 39 kg
= Velocity of Danny = 4.8 m/s
v = Combined velocity
In this system the linear momentum is conserved

The speed of Erica and Danny is 2.57142857143 m/s
Answer:
that the sun has sunspots, which appear to be dark in color. Galileo's discoveries about the Moon, Jupiter's moons, Venus, and sunspots supported the idea that the Sun - not the Earth - was the center of the Universe, as was commonly believed at the time.
Explanation:
<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>you</em><em> </em><em>.</em><em> </em><em>please</em><em> </em><em>give</em><em> </em><em>brainliest</em><em>.</em><em> </em><em>thanks</em><em>.</em><em> </em>
Kepler's work revealed that the orbit of each planet is an ellipse,
with the sun at one focus.
Newton's work revealed that if his law of universal gravitation is
correct, then the orbit of each planet must be an ellipse with the
sun at one focus.
Answer: 2*10^-3 nC
Explanation: The capacitor of two plates is given by C= εoA/d where A and d , are the area and the separation of the plates, respectively.
We also know that C=Q/V and V=E*d ( E=electric field between the plates)
From the above expression we have:
Q= εo*A*E= 8.85 ^10-12*7.54 * 10^-4*300= 2*10^-3 nC
There is no correct answer,
<em>like in life, there simply isn't one</em>
<em>because, life can be hard sometimes, but there will sometimes be no right answer.</em>