One grove (or track) on each side.
There were thirty-three grooves on one side of a standard 78 rpm record The seventy-eight rpm records were released in the early 1800s and were very popular at that time.
One. Starts at the edge, finishes in the middle.
RPM is short for Revolutions Per Minute. It is the measurement of how many times your engine is rotating each minute. As you accelerate, your RPM will increase until the next gear is selected, lowering the RPM. RPM is the whole reason for transmissions: if there was only one gear the RPM would get so high that the engine would become damaged. By shifting into higher gears, the RPM is lower and you get better gas mileage.
The version on vinyl, or a record (the LP at 33.3 RPM). I remember when there were 45 RPM records, usually just 1 song each side, and LP records or albums, which had the Long Playing version of songs, with, sometimes, repeated choruses, etc...Earlier vinyl records had 78 RPM records also.
You will find the speed you want the turntable to turn at on the label eg, 33 1/3 rpm, 45 rpm or 78 rpm. A 45 rpm will have a larger hole in the middle than a 33 1/3, more commonly known as an album because it will have between 1 and 9 or 10 songs on each side and a 78 will have only 1 song per side, 78's are the oldest and in most cases worth the most if you were looking to sell them.
You can distinguish a 78 record from a 33 by their material, speed, and appearance. 78 RPM records are typically made of shellac, are thicker, and have a more brittle feel, while 33 RPM records are usually made of vinyl, thinner, and more flexible. Additionally, 78s have a larger spindle hole and grooves that are wider and more closely spaced compared to the finer grooves of a 33. Lastly, the playback speed is a key indicator, as 78s play at 78 revolutions per minute, while 33s play at 33 RPM.
Halloween
A 1-cylinder engine at 3600 RPM will produce 3600 sparks per minute, as each revolution of the engine results in one spark. Since there is only one cylinder, each cycle corresponds directly to one spark. Therefore, the spark frequency matches the engine's RPM.
The tachometer is an electrical device that senses the ignition system. It indicates engine RPM (revolutions per minute). Engine rpm and crankshaft rpm are two ways of expressing the same thing. True, the crankshaft does rotate twice for each complete set of cylinder firings but the tachometer counts each rotation.
A '45' is an old record played at 45 rpm, the A side and B side were the same shape and size, a circle.
7 Rangers appeared in "Power Rangers RPM."
The only chance of a correct answer is for the question to include all the label details and the markings on the record between the label and the grooves.