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 VINATGE SEAMLESS NEMROD-DUR MAX-VUE DIVE MASK US $34.99 
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 BLUE DIVING MASK, SCUBA , SURFING, SNORLKING, WETSUIT US $13.88
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 COMBO PACKAGE MASK/FINS/SNORKEL DIVE, SCUBA US $41.88
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 DIVING MASK/SNORKLE SET,GREEN, SURF, SNORLKING, WETSUIT US $15.88
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 DIVE DEAL MASK/FINS/SNORKEL & 2 PC RASH GUARD,SCUBA US $66.88
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 DIVING MASK, GREEN SCUBA , SURFING, SNORLKING, WETSUIT US $13.88
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 Scuba Dive Mask Snorkel Equipment Lot US $35.00
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 SCUBA DIVING MASK, SCUBA , SURFING, SNORLKING, WETSUIT US $13.88
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 Wetsuit Dive Mask / Hood Black Adult M US $7.99
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 Scuba Mask Lot US $35.55
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 SCUBAPRO CRUISER SCUBA MASK US $6.99
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 OCEAN WAYS SCUBA MASK US $6.99
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 vintage Scuba Mask Tusa US $9.99
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 vintage Scuba Mask Dacor Sport Miramar US $9.99
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 vintage Scuba Mask US $9.99
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 GENESIS Scuba Diving Mask & Oceanic Snorkeling Tube US $6.50
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 scuba swim dive Mask Snorkel Set 9A04 -Pink oceanic US $21.00
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 WING Mask, Snorkel, fin Set jet mares scuba swim dive US $47.00
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 15m water resistant diving mask camera, US $178.85
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 Panoramic Non-Purge Dive Mask Dry Snorkel Mask Case Scuba Diving Snorkeling C US $59.95
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 Vintage Scuba pro Dive Mask Pressurizer Compact US $9.99
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A scuba diver dives to a depth of 20m in ocean water. If the circular glass plate in the diver's face mask ?
A scuba diver dives to a depth of 20m in ocean water. If the circular glass plate in the diver's face mask has a diameter of 16cm, what force does the water exert on it?
Force his face is:
G = m*g
m=density_of_water*V
V=h*S
S=pi*(d/2)^2