Physics Answers

What is the magnitude of the repulsive force of two protons in a nucleus if the charge on each proton is 1.6 X 10 ^-19 C and the protons are 3 X 10 ^-15 m apart?

Two point charges q₁ = 25nC and q₂ = -75nC are separated by a distance of 3.0 cm. Find the magnitude and direction of (a) the electric force that q₁ exerts on q₂ and (b) the electric force that q₂ exerts on q₁.

A battery of potential store charges on a combination of two identical capacitor. What is the potential difference across and the charge on either capacitor if the capacitor are in parallel? Series?

A bowling ball with a mass of 15.0 kg is rolling down a hill that is inclined at an angle of 16 degrees. The coefficient of kinetic friction between the ball and the grass is 0.10. Calculate the velocity of the bowling ball obtained after 8 seconds and the distance travelled during that 8 seconds.

What changes take place in the atomic structure of an element X with atomic number 88 and mass number 226,if it emits 2 alpha particles

A 1550 kg car with it's engine off starts 100 meters high on hill A. It coasts down hill A then up hill B until it stops at a height of 90 meters. How much thermal energy was generated?

how much heat is given out when 50g of steam at 100°C cool to water at 28°C?

a dielectric object is placed in an electric field.the object becomes polarised and a large number of atomic inmolicular dipole in the object align in the direction of the applied electric field.drive an expression for the electric potential due to this polarised dielectric at a point outside the dielectric

The mutual inductance between two coils is 150 mH. Find the magni- tude of the e.m.f. induced in one coil when the current in the other is increasing at a rate of 30 A/s.

. How much energy is stored in a 150µF capacitor if a 12V battery is connected across

it? How much charge is stored in this capacitor?