Physics Answers

Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a 0.60 µC charge and flies 30ᵒ north of west at a speed of 660 m s-1 over the Earth’s south magnetic pole, where the 8.00 X 10-5 T magnetic field points straight up. Determine the magnetic force on the supersonic jet.

A copper cylinder has a radius of 2.5 cm and a length of 5.6 cm at 20 degree Celsius. The rod is heated until its temperature is 85 degree Celsius. Find the density of the copper at 85 degree Celsius. If the density of the copper at 20 degree Celsius is 8,960 kg/m^3

Please can someone answer this with solutions? Thank you very much

Three positive point charges of 3.0 µC, 6.0 µC, and 2.0 µC, respectively, are arranged in a triangular pattern, as shown in the figure below. Find the magnitude and direction of the electric force acting on the 6.0 µC charge.

Determine the electric flux for Gaussian surface that contains 100 trillion electrons.

Calculate the linear expansivity or brass or length 170m,that assumes new length of 120.05m when heated through the temperature of 100⁰c

Calculate also the area and heated expansivity

An object has a launch velocity of 30.0 m/s at launch angle of 30.00 relative to horizontal. Find the a) x and y component of initial velocity, b) time to reach the peak c) total time of flight, d) vertical height to reach the peak, and e) horizontal distance. 

A projectile has an initial launch speed of 18.0 m/s. If it is desired that it strikes a target 31.0 m away at the same elevation, what should be the projection angle?

A closed tank contains 0.5m of mercury density 13600 kg/m3 , 2m of water of density 1000 kg/m3 and 3m of oil of density 900 kg/m3 and there is an air space above the oil. The gauge pressure at the bottom of the tank is 200 kPa.

(i) Illustrate the stratification of the fluids under gravity with aid of diagram

(ii) Determine the gauge pressure at the top of the tank

A closed tank contains 0.5m of mercury density 13600 kg/m3 , 2m of water of density 1000 kg/m3 and 3m of oil of density 900 kg/m3 and there is an air space above the oil. The gauge pressure at the bottom of the tank is 200 kPa.

(i) Illustrate the stratification of the fluids under gravity with aid of diagram.

(ii) Determine the gauge pressure at the top of the tank.

A body moving with an initial velocity 6ms~-¹ accelerates uniformly at a rate of 50ms~-¹.What is the distance covered during this period