In order for an object to conserve it's total mechanical energy it is absolutely necessary that?

What is the lonar crater, India (Aisa)

If the minute hand of a large clock is 0.50 m Long what is its linear speed at its tip in meters per second

Which of the following statements about how sound waves travel is correct? A Sound waves travel faster through solids than through liquids. B Sound waves travel faster through gases than through solids.

An object at rest or moving at a constant speed in a straight path will continue to do so unless acted upon by an unbalanced force

Billy is pushing a book with a force of 100N to the left, and Johnny is pushing the same book with a force of 80N to the right. What is the Fnet? 20N to the left 20N to the right 20n to the right 20n to the left

You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. if the current in the short circuit is measured to be 18 amperes, what is the internal resistance of the battery?

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the ball?

Is there such a thing as real time weather radar? why not?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?