At 25°C, sound can travel 100 meters across a football field in 0.29 seconds. Determine the velocity of these sound waves in the direction they travel across the field.

A)

0.0029

m

s

B)

29

m

s

C)

345

m

s

D)

34,500

m

s

Hello what is the meaning of physical science

If a student tried to lift a 350 N box upwards with a lever that is 75 cm long, how much force would they need to provide given a fulcrum 20 cm away from the box. 1312.5 N. 93.3 N. 65.6N. 2333N.

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