Which of these quantities needs to have a direction associated with it? Select one: a. force only b. force and acceleration c. mass only d. acceleration only

AN airplane travels 4000 m in 20s on a heading 0f 35 degrees north west. Calculate average velocity.

What is the electric potential energy of a system that consists of two protons 2.7*10-15 m apart-as might occur inside a typical nucleus?

A train's mass is 18181.81 kg. What is its weight?

Which of the following types of electromagnetic radiation has the shortest wavelength? Gamma rays Microwaves Visible light Radio waves

What particle is found in the electron shells or clouds? A) protons B) Photon C) electrons B) electrons and photons

Velocity is: а - speed and direction. b - distance divided by time. c - always the same as speed. distance multiplied by time. d - distance multiplied by time

The gauge pressure in each of the four tires of an automobile is 230 kpa. if each tire has a "footprint" of 180 cm2 (area touching the ground), determine the mass of the car.

A bus travels 20 KM and 30 minutes what is average speed of the bus

What is the total number of atoms in the following formula? CaBr2

A lifeguard on a beach observes that waves have a speed of 7 m/s and a distance of 4.6m between wave crests. what is the period of the wave motion?