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If a ball of mass 5kg is dropped from rest, how far will it travel in the 3 seconds after it reaches 150m from it's original position? Write down the change in it's total energy after the 3 seconds. (ignoring air resistance)

Calculate the speed the ball is travelling at when it reaches 150m using v²= u²+ 2ax. 2) Calculate the distance travelled in 3 seconds by an object with a speed of that found...

Answered by Dafydd O. • Physics tutor

2188 Views

Bismuth-208, which has an atomic mass of 208u and 83 protons in the nucleus, decays through the emission of 2 alpha particles and a beta-positive particle. What isotope results from this decay?

²⁰⁸₈₃Bi ==> ^x_yZ + ⁴₂a + ⁴₂a + ⁰₁B x = 208 - 8 = 200 y = 83 - 5 = 78 Proton number = 78 ther...

Answered by Danny L. • Physics tutor

5526 Views

What are Newton's three laws?

First: an object remains at rest or constant speed unless acted on by an external force

Second: Force is equal to rate of change of momentum

Third: Every action has an equal and opposite rea...

Answered by Charlie D. • Physics tutor

1972 Views

Explain how Maxima and Minima occur in Young's double slit experiment

When coherent, in-phase light passes through two slits they act as seperate sources, these waves diffract and overlap, causing regions of constructive and destructive interference. When they collide with ...

Answered by Charlie D. • Physics tutor

10586 Views

You are in a vacuum chamber, and you drop a feather and a bowling ball (initially at rest) from a great height. Which will hit the ground first?

The key fact here is in free fall everything accelerates at the same rate. Acceleration is equal to 9.81 m/s² (accleration of free fall). This means provided you drop both at the same height, a...

Answered by Owen T. • Physics tutor

7059 Views