Physics Answers

A proton with a speed of 2.0x10^5m/s enters a region of space in which source charges have created an electric field potential "v"; What is the proton speed after it move through a potential difference of 100volts.

- What will be the final speed if the proton replace an electron.

Mass of Proton = 1.67x10^-27kg

Mass of Electron = 9.1x10^-30kg

A house is flown with a 100watts bulb, a 1,000watts, a 40watts radio and a 200watts bulb. If the house is supplied with 200volts. Find the current passing through the main fuse when all appliances are ON.

A rectangular bar of carbon is 1cm by 1cm cross sectional area and 50cm long.

I. Find the resistance between it's square end.

II. The resistance between two opposite rectangular phase. Resistivity= 3.5x10^-5ohms

Find the three current I1, I2, I3 with Kirchoff rule where R1= 100ohms, R2= 10ohms, R3= 5ohms and E1= 12volts, E2= 6volts

A Bat Has The momentum of 0.86 kg*m/s and is traveling at 2.9 m/s. What is the mass of the bat ?

An electric field with a magnitude of 2.20 𝑘𝑁/𝐶 is applied along the x-axis. Calculate the

electric flux through a rectangular plane 0.77 m wide and 1.44 m long assuming that (a) the

plane is parallel to the yz plane; (b) the plane is parallel to the xy plane; (c) the plane

contains the y axis, and its normal makes an angle of 26.7° with the x axis.

An electric field with a magnitude of 2.20 𝑘𝑁/𝐶 is applied along the x-axis. Calculate the

electric flux through a rectangular plane 0.77 m wide and 1.44 m long assuming that (a) the

plane is parallel to the yz plane; (b) the plane is parallel to the xy plane; (c) the plane

contains the y axis, and its normal makes an angle of 26.7° with the x axis.

A point equilibrium is reached by three forces as in the diagram below. Force F1 has components 15N due south and 13N due west. What are the components of force F2?

What is the work done by GRAVITY if a 50kg block is pushed along a 4m horizontal track?

An unpaved spring has a length of I = 12cm. The load of 5N lasts up to 15cm. How long will the spring be when the load will be 15N? Make a figure.