An isotope decreased to one fourth its original amount in 18 months. What is the half life of this radioactive isotope?

A small ball of mass m is aligned above a larger ball of mass M = 0.63kg (with a slight separation) and the two are dropped simultaneously from a height of 1.8m.

Group of related parts

What is static electricty?

Which of these is NOT an example of acceleration? A. moving at 20 m/s in a circle B. speeding up from 5 m/s to 10 m/s C. slowing down from 10 km/h to 5 km/h D. moving at a constant speed of 150 km/h

Where are the female reproductive organs of a flower found? Question 26 options: in the stamen in the roots in the pistil in the petals

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?