Physics, 17.03.2021 23:40, kflvcko6996
A lift moves i)up
and ii) down with an
acceleration of 2 ms
{s}^{ - 2} . In cach case, calculate
the reaction of the floor on a man
of mass 50kg standing in the lift.
Answers: 3
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Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is
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A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?
Answers: 2
Physics, 22.06.2019 14:00, mariahgriego4126
Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.
Answers: 1
A lift moves i)up
and ii) down with an
acceleration of 2 ms
{s}^{ - 2} . In cach case, c...
acceleration of 2 ms
{s}^{ - 2} . In cach case, c...
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