Physics Answers

A baseball is thrown horizontally with an initial velocity of 20 m/s from

the height of 1.5 m. How long will it take to reach the ground? How far

will it go horizontally?

Compute for the maximum height to be reached by the cannon

ball.

A baseball is thrown horizontally with an initial velocity of 20 m/s from

the height of 1.5 m. How long will it take to reach the ground? How far

will it go horizontally?

The take-off velocity of a small jet plane on a straight runway is 55 ms. If the average acceleration of the plane during take-off is 2.2 ms^2, calculate the time the plane will take to reach its take-off velocity.

A circular copper waveguide has a radius of 0.4 cm and is filled with a dielectric material having 𝜀𝑟 = 1.5 and tan δ = 0.0002.

2.1.1. Identify the first four propagating modes and their cut-off frequencies.

2.1.2. For the dominant mode, calculate the attenuation due to dielectric loss and attenuation due to conductor loss at 20 GHz.

an elephant of mass 500kg stands with all four legs on the ground esch foot has area of 0.08m^2.calculate the pressure exerted by the elephant on the ground(g=20m/s^2)

woodchuck runs 20 m to the right in 5 s, then turns and runs 10 m to the left in 3 s. (a) What is the average velocity of the woodchuck? (b) What is its average speed?

A spring 20cm long is stretched to 25cm by a load of 50N. What will be it's length when stretched by 100N assuming that the elastic limit is not reached

What is the potential energy of two charges of +4.2 uC and +6.1 uC which are separated by the distance of 50.0 cm

Water flowing over the Wraith Falls in Yellowstone National Park drops 30 m.

 If all of the water's energy goes to heat it, what is its temperature increase?