Mechanics | Relativity Answers

The book is lifted 1.0-meter from the ground and has a potential energy of 4.9-Joule. What is the mass of the book?

A 1mcubed container of air at 25 Celsius and 500kpa is connected through a valve to another container holding 5kg of air at 35 Celsius and 200kpa. The valve is opened, and the entire system is allowed to reach thermal equilibrium with the surroundings, which are at 20celcius. Determine the volume of the second tank and the final equilibrium pressure of air.

Find the distance and time at which a fast moving train B will excell the train A. Where they are moving in the same direction with velocity 50 km/hr for A and 80 km/hr for B. Where train A has initial displacement of 1200 km & train B has no initial displacement

An electron moving parallel to the x-axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x=2.00 cm. (a) Calculate the electric potential difference between the origin and that point. (b) Which point is at the higher potential?

A small 2.00 g plastic ball is suspended by a 20.0 cm long string in a uniform electric field. If the ball is in equilibrium when the string makes a 15.0 degree angle with the vertical, what is the net charge on the ball?

Four charged particles are at the corners of a square of side a. Determine (a) the electric field at the location of charge q and (b) the total electric force exerted on q.

Three charged particles are located at the corners of an equilateral triangle with sides 2.00C, -4.00C, 7.00C subtended by an angle of 60.0 degree at one end . Calculate the total electric force on the 7.00C charge.

Three point charges are arranged such that they take the shape of an isosceles triangle with sides 2.00C, -4.00C, 7.00C subtended by an angle of 60.0 degree at one end. Find(a) the magnitude and (b) the direction of the electric force on the particle at the origin.

Three charged particles are arranged on corners of a square. (i) What is the direction of the electric field at the upper right corner?

A very small ball has a mass of 5.00 x 1023 kg and a charge of 4.00C. What magnitude electric field directed upward will balance the weight of the ball so that the ball is suspended motionless above the ground?