If systems interacts with objects outside itself. why would the momentum of the system change?

Acceleration a has the dimensions of length per time squared, speed v has the dimensions of length per time, and radius r has the dimension of length. What are the dimensions of the following combinations of quantitiesa=vr

The measured of the energy of motion of partical of matter

Consider five atoms from the second period : lithium, beryllium, boron, carbon, and nitrogen, which of these elements has the lowest electronegatity

5.00 g of molten NaCl is at its melting temperature. The salt is added to 25.00 mL water at 25.0 °C in a coffee cup calorimeter. The salt becomes solid and the temperature of the water increases to 47.9 °C.

A bullet travels at 850 m/s. How long will it take a bullet to go 1 km?

How the properties of sound waves change as they spread out in a spherical pattern

If legos are plastic can they be recycled?

At an accident scene on a level road, investigators measure a car's skid mark to be 93 m long. It was a rainy day and the coefficient of friction was estimated to be 0.35.

How does a shorter wavelength affect the frequency of a wave?

Which property of a filled balloon would be unchanged on the moon where there's no air and less gravity? A. mass B. weight C. volume D. density