Mechanics | Relativity Answers

the planet jupiter has an elliptical orbit with e=0.05 and a semi-major axis if 7.8*10¹¹m .calculate the energy of the planet , perihelion and aphelion distances and the speed of planet at these points

an airplane is travelling at a distance of 5.80*10^3km.If the cruising speed of the airplane is 350.0km/h,how much much time will it take for the airplane to make the round trip on a calm day.

A nail weighs 0.2254 N in air and 0.1245 N when fully submerged in oil of density 800 kg/m^3. What is the density of the nail?

a particle of mass 'm' is projected with velocity 'u' at angle 'x' with horizontal. During the period when the particle descends from highest point to the position where its velocity vector makes an angle x/2 with horizontal. work done by gravity force is

calculate the amount of work needed to stop a car of 250 kg, moving at a speed of 18 km/hr

an anti-aircraft shell is fired vertically upward with a muzzle velocity of 488 m/s.what is the maximum height it can reach?what time it takes to reach the maximum height? what is the instantaneous velocity at the end of 40 seconds,60 seconds?

Determine the quantity of heat required to convert 1kg of ice at
−20
degrees Celsius to water at 100 degrees Celsius? Specific heat capacities of water and ice water are 2302 J/kgK and 4186 J/kgK respectively

A bicyclist races around a circular track and covers the same number of meters per second everywhere. Which one of the following is true?

a) The speed of the bicyclist is constant.
b)The velocity of the bicyclist is constant.

the radius of earth is four times greater and its mass is 71 times bigger than that of the moon.
Find the length of the seconds pendulum near the surface of the moon

a body of mass 100gm is suspended from the end of a light eleastic spring and set up into oscillatory motion.the equation of its displacement is x=2cos[2pie+pie/4].
find the phase constant and the period of oscillatory motion.what is the force acting on the body?