Top answers

What are the postulates of special relativity?

There are two postulates of special relativity: 1. The laws of physics are invariant in all inertial frames of reference. What this means is that if we have a description for how physical systems undergo cha...
SP
Answered by Srijan P. • Physics tutor
7209 Views

Can you solve (2x-4)(x+1)=0?

All we need to do here is find the values of x that make each bracket zero.So2x-4=02x=4x=2andx+1=0x=-1
SI
Answered by Samuel I. • Maths tutor
6307 Views

Form the differential equation representing the family of curves x = my , where, m is arbitrary constant.

Differentiating the above equation with respet to y:dx/dy = m;Substituting the value of m in the given form:x = (dx/dy) y i.e. the solution is(dx/dy) y - x = 0
PS
Answered by Piyush S. • Maths tutor
8627 Views

In triangle ABC, right angled at B, AB = 3 cm and AC = 6 cm. Determine angle BAC and angle ACB.

Using the trignometric principles,sin (ACB) = AB/AC = 3/6 = 1/2Thus, angle ACB = 30 degreesand angle BAC = 90 - angle ACB = 60 degrees
PS
Answered by Piyush S. • Maths tutor
16618 Views

Find the zeroes of the quadratic polynomial x^2 + 8x + 15.

x 2 +8x+15 = (x+3)(x+5)So, the value of x 2 +8x+15 is zero when x 2 +8x+15 = 0 i.e. x = -3 or x = -5.
PS
Answered by Piyush S. • Maths tutor
22832 Views