The best units for 30000J would be joules, as it is already in that unit. Alternatively, you could also express it in kilojoules, which would be 30 kJ.
The mass of a cell phone would best be measured in grams (g) or kilograms (kg). These units are commonly used for measuring relatively small objects like cell phones.
A bar graph would be best suited for comparing the sales of two different types of toys at a toy store. It allows for a direct visual comparison of sales figures between the two types of toys.
Feet that have evolved to have sturdy, flat soles with gripping capabilities, such as those of mammals like dogs or cats, are best suited for moving on the ground. These adaptations allow for efficient locomotion and traction on various surfaces.
The are about half a gram each so if you want accuracy, a milligram would be best.
For something of this size the best unit to be would be grams. Kilograms would be inaccurate because your answer would be in decimal places.
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A hardwood board, such as oak or maple, would be best suited for a table due to its durability and strength.
A saddle stitch reamer with a sewing eye would be best suited for leatherworking projects.
A person who is around 5'2" to 5'6" in height would be best suited for a 17-inch bike.
A person who is around 5'4" to 5'7" in height would be best suited for a 29-inch bike.
A person who is around 5 feet tall would be best suited for a 30-inch bike.
A modular shelving system with adjustable shelves would be best suited for organizing a closet efficiently.
A ceiling fan with a sleek and elegant design would be best suited to complement a chandelier in a room.
Metal wire
what kind of timber would be best suited to make a mould for use ina a vacuum former
A person who is around 5'4" to 5'7" in height would be best suited for a 29-inch wheel bike.
A hardwood plank, such as oak or walnut, would be best suited for a durable and stylish table top.