Physics Answers

Determine the work function when a 180-nm light is used in an experiment with an unknown metal, the measured photocurrent drops to zero at potential -0.08V.

Find the electric potential at a distance 0f 8cm from 7.58pC charge.

Compare the relativistic momentum of an electron to its classical momentum when it has a speed of (a) 0.88c in an accelerator used for treating cancer and (b)4.50 × 107 𝑚/𝑠 in the cathode ray tube of a TV set.

A 1.72 kg ball rolls on a frictionless horizontal surface at 4.19 m/s and collides with a stationary block of mass 1.23 kg which is attached to horizontal spring whose force constant is 1695 N/m. Right after impact, the ball bounces on the opposite direction at 1.59 m/s. To what distance will the spring be compressed?

Y=x² sin x find dy/dx

Y=√x cos 2x find dy/dx

hat is the change in the potential energy of the system comprising the plates and the electron when the electron moves from the negative plate to the positive plate?

what is a

A person can throw a ball at a maximum horizontal range of 120m. How high would the ball go straight up? [6 marks]

If the acceleration of an object is zero and. Its velocity is non zero what can you say about the motion of an object

When a ball naturally floats in a pool filled with mercury (density 13600 kg/m° the buoyancy force on the ball is 2224 N. If a force of 1200 N is required to force the ball

completely under water, what is the volume of the ball?