A 100-W lamp glows brighter than a 25-W lamp. The electrical resistance of the 100-W lamp is
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Connect a pair of lamps in series and current is drawn from…
Connect a pair of lamps in series and current is drawn from the battery. Connect the same lamps in parallel and the current drawn is
It takes Neptune a longer time to orbit the Sun than Earth d…
It takes Neptune a longer time to orbit the Sun than Earth does because Neptune
A pendulum clock at high altitudes runs
A pendulum clock at high altitudes runs
Two life preservers have identical volumes, one filled with…
Two life preservers have identical volumes, one filled with Styrofoam and the other filled with sand. When the two life preservers are worn by swimmers, one swimmer floats with part of the preserver above water, and the other swimmer sinks. In this case the buoyant force is greater on the life preserver filled with
Open spaces in ice crystals contribute to
Open spaces in ice crystals contribute to
Between a pair of equal and opposite charges, field lines ar…
Between a pair of equal and opposite charges, field lines are
Which unit represents the most energy?
Which unit represents the most energy?
The solar constant for Earth is
The solar constant for Earth is
Compared to an empty ship, the same ship loaded with Styrofo…
Compared to an empty ship, the same ship loaded with Styrofoam will float