Are soaps salts true or false

A non-standard issue U. S. Federal Reserve gold bar measures 7.00 x 4.625 x 2.14 inches. If gold has a density of 19.3 g/cm3, what is the mass of a gold bar in kg and pounds?

If two objects collide and one is initially at rest, is itpossible for both to be at rest after the collision?

Sentences and facts for the laws of motion.

a spring is used to launch a ball vertically into the air. the spring has a spring constant of 200N/m and is compressed by 5 cm.

A pebble is dropped into a pool of water and generates a wave that has a frequency of 7 waves/sec and a speed of 2.94 m/s. What is the wavelength

Which of the following statements correctly compares the frequency and energy of infrared waves and ultraviolet waves? A Infrared waves have lower frequencies than ultraviolet waves.

An object in the solar system orbits the Sun and has enough mass that its gravity has pulled it into a spherical shape, but it does not have enough gravity to clear its neighborhood of orbiting debris. This object is classified as:

An 8.5 l tire is filled with 0.55 moles of gas at a temperature of 305 k. what is the pressure of the gas in the tire?

Total internal reflection occurs only if

A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. the electron and neutrino are emitted at right angles and have momenta of 9.80 ✕ 10-23 kg·m/s, and 5.70 ✕ 10-23 kg·m/s, respectively.