Is visible light is a kind of electromagnetic wave

A brass cube, 10 cm on a side, is raised in temperature by 200°c. the coefficient of volume expansion of brass is 57 ' 10-6/c°. by what percentage does volume increase?

In which city rusting is a problem delhi or mumbai

A 37 N object is lifted to a height of 3 meters, What is the potential energy of this object?

What is a example of nuclear fusion

A spherical planet has twice the mass and twice the radius of the earth. if a man weighs 810 n on earth, what would his weight be on the surface of that planet?

A planet is discovered orbiting around a star in the galaxy Andromeda at four times the distance from the star as Earth is from the Sun.

Measurements of how orbital speeds depend on distance from the center of our galaxy tell us that stars in the outskirts of the galaxy. True or False

Identify what is required to calculate the atomic number and atomic mass of an element

What device is used to measure the current in a circuit

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?