keyword

free books on physics

Monthly search volume and cost-per-click data for "free books on physics" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=free+books+on+physics&country=us" +--------------+------------------+ | volume | 50 | | cpc | $0 | | competition | 0.17 | | country | US | | updated | 2026-06-20 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
physics textbooks free	110	$1.99	16/20
free physics textbooks	110	$1.99	15/20
free physics online reading	90	$15.05	16/20
free book on physics	50	$12.44	19/20
physics books free	50	$0	19/20
physics free books	50	$12.44	19/20
free books for physics	50	$0	18/20
physics books for free	50	$0	16/20
free physics textbooks online	30	$4.66	17/20
physics textbooks online free	30	$4.29	16/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=free+books+on+physics&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt