Answer:
the height h is 1.95 m above the floor
Explanation:
m = 2.0 kilogram
Ep = 39 J
g = 10 m/s²
h = ?
Ep = mgh
h = Ep ÷ mg
h = 39 ÷ (2×10)
h = 39÷20
h = 1.95 m
Linear Scientific Process
Answer:
80 m
Explanation:
The distance covered by the car is given by
where v is the velocity of the car and t is the time interval.
The car is traveling with a constant velocity of v=8 m/s, and the time interval is t=10 s, therefore if we substitute these numbers into the equation, we find:
The distance between the orbits of two satellites is 7.97 m.
Explanation:
Johannes Kepler was the first to propose three laws for the planetary motion. According to him, the orbits in which planets are rotating are elliptical in nature and Sun is at the focus of the ellipse. Also the area of sweeping is same.
So based on these three assumptions, Kepler postulated three laws. One among them is Kepler's third law of planetary motion. According to the third law, the square of the time taken by a planet to cover a specified region is directly proportional to the cube of the major elliptical axis or the radius of the ellipse.
So,
Thus, for the geosynchornous satellite, as the time taken is 24 hours, then the radius or the major axis of this satellite is
Similarly, for the another satellite orbiting in time period of 12 hours, the major axis of this satellite is
So, the difference between the two radius will give the distance between the two orbits, 13.21-5.24 = 7.97 m.
So the distance between the orbits of two satellites is 7.97 m.
Speed = distance/time
Speed of car = 125 km/2 hours
Car speed = 62.5 km/hr.