Other Physics Answers

A car changes its velocity from 20 m/s [N] to 20 m/s[S] in 5.5 s. If the mass of the car is 1500 kg, 

what is the net force acting on it?

The electric filed due in a static electric charge is 3 000 N/C and passes through a surface area of 0.3 m2. Calculate the electric flux

1. A Cylindrical capacitor having a length of 8 cm is made of two concentric rings with an inner radius as 3 cm and outer radius as 6 cm. Find the capacitance of the capacitor.

2. A parallel-plate capacitor is filled with polystyrene of 0.0002 m thickness. Find the plate area if the new capacitance after the insertion is 3.4 µF.

If a 1.35 tonne car accelerate from 15.0km/h to 75km/h on a flat road in 4.00 seconds,

A. What is the distance travelled?

A series combination of two uncharged capacitors are connected to a 15-V battery, 300uJ of energy is drawn from the battery. If one of the capacitors has a capacitance of 5.0uF, what is the capacitance of the other?

A 70kg box is slid along a horizontal floor by a horizontal 400Nt force. Find the distance travelled by the box in 5 seconds if

a) there is no friction

b) coefficient of friction = 0.20

A long thin rod of length L has a linear density y(x)= Ax where x is the distance from left end of the rod

1- how far is the center of mass of the rod from the left end of the rod?

2- what is the mass of the rod?

Calculate the amount of energy needed by a catapult to throw a stone of mass 500 g with a velocity of 10m/s

The waves on a string have wave speed 8.00m/s, amplitude 0.0600m, and wavelength 

0.400m. The waves travel in the -x direction and at t = 0s, the end of the string has its maximum 

upward displacement. 

(a) Write a wave function describing the wave and

(b). Find the transverse displacement of a particle at x = 0.350m at time t = 0.150s

A car changes its velocity from 20 m/s [N] to 20 m/s[S] in 5.5 s. If the mass of the car is 1500 kg, 

what is the net force acting on it?