Mechanics | Relativity Answers

Two forces acting on a particle. Force A is 3.0N directed north and the other force B is 4.0N 30°of E. Find the resultant force using parallelogram and component method

A stuntman is designing a movie scene. The actor will “fall” from a radio tower. He needs to know how fast the actor will be moving after falling from the 30m tower to provide the proper airbag for safety. How fast will he be falling?

The period of oscillation of an object in an ideal spring and mass system is 0.50 s and the amplitude is 5 cm. Determine the velocity of the body at the equilibrium point

A projectile with an initial velocity of 360 m/sec is fired up the hill inclined 200. If the firing angle is 400 from the inclined plane. Find the range of the projectile along the incline.

A particle executes simple harmonic motion with an amplitude of 1.57 cm. At what positive displacement from the midpoint of its motion does its speed equal one half of its maximum speed? Answer in units of cm

in a container the number of density of gas is 100 molecules cm³ . temperature is 3 kelvin what ia the average pressure exerted by gas

The pressure of air in a reasonably good vacuum might be 2.0 x 10^-5 mmHg. What mass of air exists in a 250 mL volume at this pressure and 25℃?

Take M = 28kg/kmol for air.

An ideal gas initially having volume 2.0 x 10^-3m³ at a pressure of 1.2 x 10⁵ Pa and a temperature of 0℃ is brought around a cycle. (A) The pressure is increased to 1.5 x 10⁵ Pa without a change in volume, (B) the gas expands isothermally until it returns to its original pressure and (C) the gas is compressed at constant pressure until it returns to its original state.

What is (a) the temperature of the gas during process B, (b) the volume of gas at the end of process B and (c) the work done during the cycle.

Estimate the difference between C_p and C_v for 10kg of water at 20℃ and at a pressure of 1 atm

The pressure or air in a reasonably good vacuum might be 2.0 x 10^-5 mmHg. What mass of air exists in a 250mL volume at this pressure and 25⁰C? Take M=28 Kg/kmol for air.