Choose the law each sentence describes. This law relates a planet's orbital period and its average distance to the Sun. The orbi
2 answers:
Explanation:
Kepler's has given three laws as :
1. Kepler's first law - It is also known as law of ellipses. This law states that the planets revolves around the sun in an elliptical orbit.
2. Kepler's second law - It is also known as law of equal areas. This law states that the line that connects the planet and the sun covers equal areas in equal interval of time.
3. Kepler's third law - It is also known as law of law of harmonics. This law states that the square of orbital time period is directly proportional to the cube of the average distance from the sun i.e.
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Answer:
The time it takes the proton to return to the horizontal plane is 7.83 X10⁻⁷ s
Explanation:
From Newton's second law, F = mg and also from coulomb's law F= Eq
Dividing both equations by mass;
F/m = Eq/m = mg/m, then
g = Eq/m --------equation 1
Again, in a projectile motion, the time of flight (T) is given as
T = (2usinθ/g) ---------equation 2
Substitute in the value of g into equation 2
Charge of proton = 1.6 X 10⁻¹⁹ C
Mass of proton = 1.67 X 10⁻²⁷ kg
E is given as 400 N/C, u = 3.0 × 10⁴ m/s and θ = 30°
Solving for T;
T = 7.83 X10⁻⁷ s