Question 19 (1 point) A 4.00kg mass is tied to the end of a string and whirled around in a horizontal circle with a radius of 10.0m. If the mass has a frequency of 6.0 Hz, calculate the magnitude of the tension in the string. 0 1.5 x 10A2 N O 1.4 x 10"4 N O 5.7 x 10"4 N Question 29 (1 point) On the surface of an unknown planet, an 80 cm long pendulum takes 162.15 s to swing 50 times. The gravitational field strength on the surface of this planet is 3.0 m/s^2. O True O FalseQuestion 10 (1 point) The gravitational force of attraction between two spheres of mass 2.0 kg each, whose centres are separated by 2.0 m, is Q 6.7x1011 N O 1.3x 1010 N 03.0N O 3.4x10-11 N Question 21 (1 point) A centripetal force of 45.0 N causes an object to travel in a circle with a diameter of 7.5 m and with a frequency of 0.60 Hz. The mass of the object is 0.84 kg