How was the earth formed and how has it become what we know today?

A current of 4A flows in a wire of resistance 60 ohm. calculate electrical energy consumed in 2 min.

A flask weights 45.4 g when it is empty and 121.8 g when filled with water. When the same flask is filled with another liquid, the mass is 91.39 g. What is the density of the second liquid?

What happened to change people's views and lead them to believe in continental drift?

In a simple electric circuit, a 110-volt electric heater draws 2.0 amperes of current. The resistance of the heater is

Why does the sample on a microscope slide need to be very thin? A. so it can fit on the stage of the microscope B. so light can shine through it from below C. so it can be seen with a diverging lens D. so the eyepiece lens can be focused properly

Do action and reaction cancel each other out?

A weather balloon is inflated to a volume of 29.1 L at a pressure of 733 mmHg and a temperature of 24.7 ∘C. The balloon rises in the atmosphere to an altitude where the pressure is 365 mmHg and the temperature is - 14.5 ∘C.

A car traveled 112.0m in 24.500s, what was a car's average speed?

A rollercoaster is in motion. Which of the following is NOT a force acting on the rollercoaster? A. Gravity B. Friction C. Velocity D. Air resistance

How was the earth formed and how has it become what we know today?