Physics Answers

A stone of mass 0.6kg attached to a string of height 0.5m, is whirled in a horizontal circle at s constant speed. If the maximum tension (force) in the string is 30N force before it breaks. Calculate the maximum number of revolution it can make.

A stone of mass 0.6kg attached to a string of height 0.5m, is whirled in a horizontal circle at s constant speed. If the maximum tension (force) in the string is 30N force before it breaks. Calculate

a.) The maximum speed of the stone

A harmonic oscillator has a mass of 4 kg and a spring with a force constant 100

N/m. Find the period, frequency and angular frequency.

calculate earth's mass given the acceleration due to gravity at the North pole is 9.830 m/s² and the radius of the earth is 6371km from pole to pole.

What is the potential energy if a +4 nC charge moves from infinity to point A, 5 cm away from a +3 μC charge?

Chris jumps off a bridge with a bungee cord (a heavy stretchable cord) tied around his ankle, (Figure 1). He falls for 15 m before the bungee cord begins to stretch. Chris's mass is 80 kg and we assume the cord obeys Hooke's law, F=−kx, with 54 N/m.

b) What is your acceleration at the bottom of the jump?

if the period of a simple pendulum is 2 s, what should its length be ? if the length of the pendulum is doubled what will its period be.

A wire 75m long and 3.38cm in diameter is connected to a source of power with a potential difference of 18.25v and a current flowing of 28.92A. Assume the temperature remains constant. Calculate the resistivity of the metal.

If an electric field strength greater tham3.0*10⁶ N/C is enough to cause conduction between the plates. Find the maximum charge either of the plates can hold without conduction.

The ratio of number of electronic states in the energy range 2-3 eV to that of in 0-3 eV ((Number of electronic states in the energy range 2 -3 eV)/(Number of electronic states in the energy range 0-3 eV)) will be