Physics Answers

A uniform electric field of magnitude E = 38 N/C points along the x-axis. A circular loop of radius R = 26 cm is centered at the origin with the normal to the loop pointing θ = 45 degrees above the x-axis.

Calculate the electric flux in units of N⋅m2/C that passes through the loop.

Assuming the bus in question 3 does not change its cruising speed on its way down, where does the gravitational potential energy go? Why is there a risk of brake failure in this situation? 

Three point charges are located it the positive x-axis of a coordinate system. Positive point charge 𝒒𝟏 = 5 𝑛𝐶 and negative point charge 𝒒𝟐 = −10 𝑛𝐶, are located 3 cm and 5 cm from the origin respectively. Determine the total force of another point charge 𝑸 = −𝟏 𝝁𝑪 at the origin due to the other two chargers.

An object with mass of 15kg is pushed along a horizontal surface ,a distance of 10m to point Q eastwards by constant of 128N the coefficient of kinetic friction between the object and the surface is 0,55 draw a force diagram showing all the force acting on the 15kg

The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.

Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific

gravity

Two spherical objects have masses of 1.5 x 105 kg and 8.5 x 102 kg. Their centers are separated by a distance of 2500 m. Find the gravitational attraction between them.

A crane used 112.95 watts of power to raise a 17.74 N object in 4.05 seconds. Through what vertical distance was the object displaced?

Trucks carrying flammable liquids like gasoline often become electrically charged. How is the possibility of an explosion prevented?

Determine the charge of each atom if it is composed of the following particles:

1. 5 electrons and 5 protons

2. 6 protons and 5 electrons

Compute the charge of the following ions. Show your solution.

1. Anion with a charge of -3

2. Cation with a charge of +2

3. Anion with a charge of +5