Determine the centripetal force acting upon a 40-kg child who swings in a circle at a speed of 3 m/s. The radius of the swing is 20m.

In a process called pair production, an energetic gamma ray is converted into an electron and a positron.

Determine the resistance of a 250-w lightbulb connected to its proper source voltage of 110 v.

What factors affect the upthrust exerted by the fluid on any object immersed on it?

What coefficient of KCI

Three particles are placed in the xy-plane. A 30 g particle is located at (3 m, 4 m), and a 40 g particle is located at (2 m, 2 m).

What is the period of a wave if the frequency is? 5 Hz

Which of the following statements about dark matter and dark energy is/are true? Choose one or more: Both exceed the matter-energy equivalent of luminous matter. Dark matter has only an attractive gravitational effect, while dark energy is repulsive.

On the sun is the corona above the photosphere?

Which sequence shows electromagnetic waves arranged from shorter to longer wavelengths?. A. visible light, infrared radiation, microwaves, and ultraviolet rays. B. infrared radiation, Visible light, ultraviolet rays, microwaves. C.

Will the April 29th 2020 astroid be the end of humanity as we know it?