What is magma? a. the molten mixture of rock-forming substances, gases, and water from the mantle.. c. hardened lava on the surface of the earth. b. liquid rock that reaches the surface. d. all of the above select the best answer from the choices provided

Could someone . i have tried to solve myself but my calculation is off

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)