Why is the crust less dense than the core

Which process best describes part of a scientific investigation? O designing a solution O evaluating the conclusion O evaluating the solution O identifying the conclusion

The speed of sound in air at 25 degrees Celcius is 340 meters per second. The frequency of the note C3 is 128 Hertz. What is the wavelength of this sound wave?

Kaitlyn builds a project in which light bulb A and light bulb B are in parallel circuits. The project has a switch and uses a battery for its source of voltage. She connects her battery and neither light turns on.

What is the relationship between the masses of the objects and the gravitational force between them?

A rock is thrown from a bridge at an angle 30∘ below horizontal. immediately after the rock is released, is the magnitude of its acceleration greater than, less than, or equal to g?

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?