How is energy conserved into transformation

A car with a mass of 2.0*10^3 kg is traveling at 15m/s. what is the momentum of the car?

What is radioisotope dating?

If the radius of a neutron is 1.0*10-13cm, calculate the density of a neutron in g/cm3. (volume of a sphere = 43πr3) Express your answer using two significant figures.

Which electromagnetic wave has wavelengths ranging from the size of a printed period to the length of a pen (1*10-3 to 1*10-1 meters) ?

Which shared property belongs in the region marked "B"?

What is the weight on earth of a girl with a mass of 38 kg?

50g of ice at 0°C is mixed with 50g of water at 80°C, what will be the final temperature of a mixture in degrees C?

If the Density of an object is 5.2 g/cm3, and its volume is 3.7 cm3, what is its mass

The direction of the magnetic field is determined by which of the following? A. energy of the current B. magnetic domain C. magnetic force D. direction of the current

A ship is traveling at 154 m/s and accelerates at a rate of 1.80 m/s^2 for 1 minute. What will its speed be after that minute? Calculate the answer in both meters per second and kilometers per hour.