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How do I solve this problem?

Two trains move towards one another. The first one has a speed of 30 km/h, and the second one travels at 50 km/h. The initial distance between them is 160 km

II
Answered by Ioan I. • Physics tutor
3216 Views

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 ...

SP
Answered by Srijan P. • Physics tutor
6538 Views

Explain the workings of a mass spectrometer

Charged particles are fired into a magnetic field (perpendicular to the motion of the particles). Using Fleming’s left hand rule, a magnetic force acts centripetally – such that the charged particles e...

DS
Answered by Dan S. • Physics tutor
6878 Views

How deep is the water if it takes a pulse of ultrasound 0.8s to be received back at the boat. the speed of ultrasound is 1600m/s in water

firstly we know how fast the wave is travelling and we know for how long so using our speed equals distance over time equation we can rearange for distance (D= VT).

we can the plug in our...

RC
Answered by Ross C. • Physics tutor
6394 Views

Calculate the frequency of a simple pendulum of length 950 mm. Give answer to an appropriate number of significant figures.

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