CO2, NaCl, HCl these maybe classified as a) elements and compounds b) elements and molecules C) elements and pure substances D) compounds and pure substances

A car accelerates from rest to a speed 20 m/s in 12 s. Find the distance the car travels this time

How much potential energy does a 50-N box have when lifted at a height of 1.5M? A. 75J B. 33.3J C. 50N D. 0.03J E 37.5J

Two masses are attracted by a gravitational force of 400 N. What will the force of attraction be if each of these two masses is halved?

A ski that is placed on snow will stick to the snow. However, when the ski is moved along the snow, the rubbing warms and partially melts the snow, reducing the coefficient of friction and promoting sliding.

A bowling ball with a mass of 6.35 kg travels down the lane at a velocity of 6.0 Calculate the kinetic energy of the ball 19.05 Joules 114.3 Joules 120.97 Joules 228.6 Joules

Name 3 ways forces can change the motion of an object

Capillaries are part of which body system? A. Skeletal System B. Nervous System C. Digestive System D. Circulatory System

A rubber block weighing 60. newtons is resting on a horizontal surface of dry asphalt. what is magnitude of the minimum force needed to start the rubber block moving across the dry asphalt?

The reaction between nitrogen and hydrogen to produce ammonia is described as an equilibrium reaction. what substances are present in the reaction mixture when equilibrium has been obtained?

Using the scientific definition of work, does a greater amount of force always result in a greater amount of work? why or why not?