What is an islolated system

A bus takes half an hour to travel 15km. calculate its speed in m/s

Quartz gold and calcite are examples of? coal is what

Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? a. location where they are formed b. luminosity they are formed with c. the color they are formed with d.

Which of the following is the correct definition of light energy? A. energy resulting from the flow of charge particles, such as electrons or ions OB. energy that is transmitted in the form of electromagnetic waves OC.

A soccer ball is traveling at a velocity of 50 m/s The kinetic energy of the ball is 500 J What is the mass of the secer bort?

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?