Is it okay to let children use a phone at dinner? good or not good?

Which movement causes day and night on Earth? rotation of Earth revolution of Earth around the Sun Earth's elliptical orbit in space moon's orbit around Earth

The electrons of an atom store nuclear energy.

A hollow aluminum cylinder 19.0 cm deep has an internal capacity of 2.000 L at 23.0°C. It is completely filled with turpentine at 23.0°C. The turpentine and the aluminum cylinder are then slowly warmed together to 91.0°C.

A fixed resistor, (R) is in parallel with a variable resistor; both are connected to a real battery (internal resistance is not negligible). A) Originally the fixed and variable resistors have the same resistance.

How much power does it take to lift a 4500kg elevator 25m up a shaft in 29s?

A pendulum swings with amplitude. 02 m and period of 2 s what is its maximum speed

What bone cells respond to stress?

What are two ways that convention currents in the ocean distribute the suns energy?

A 535 kg roller coaster car began at rest at the top of a 93.0 m hill. Now it is at the top of the first loop-de-loop. This roller coaster's track is nearly frictionless, so resistance can be ignored. Using g = 9.

A bulldozer does 45,000 joules of work to push a boulder a distance of 30 meters. How much force is applied to push the?