The mass of the jupiter is 19*10^26kg &the mass of the earth is 6*10^24kg. if the distance between the jupiter &earth is 6.29*10^6km. what will be the gravitational force between these two masses?

What happens to light waves from a star as the star moves away from earth?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?