What is the most likely reason why these early flowers gradually changed to many different types of flowers over time?

Which ball has the greater average speed during the 1-s interval after release (assuming neither hits the ground during that time) ?

Using the following information to determine the young's modulus for the unknown material, the radius of the material is 4 cm. while gravitational acceleration g=10m/s? initial length (cm) 25 final length (cm) 25.7 mass (gm) 200

The equation for impulse is I = Ft, where I is impulse, F is force, and t is time. The units for impulse are N. s. a. what is the impulse when there is a force of 30 N for a time of 4 seconds? b. What is the force when there is an impulse of 18 N.

What is the Sun's right ascension on the vernal equinox? a. 0 hours b. 6 hours c. 12 hours d. 18 hours

How does conduction work?

Find the y-component of this vector:73.3,12.0m. Remember, angles are measured from the + x axis.

A smaller unit of volume than a milliliter would be a microliter. A microliter is one-millionth of a liter. Select one: a. True b. False

What material are oil pipelines made from?

What is the speed of a car going v=1.000mphv=1.000mph in SI units? Notice that you will need to change from miles to meters and from hours to seconds. You can do each conversion separately.

What made it possible to construct skyscrapers in the 1800s