How many days will it take for one half of the original amount of a radioactive substance to decay if the half-life is 30 days?

a. 3 days

b. 15 days

c. 30 days

d. 60 days

Eddie set up a science experiment with plants. He bought three small tomato plants, all about the same size and height, and set them all in his front window.

A transverse wave is shown. What is the amplitude of this wave? 1.3 cm 2.1 cm 2.6 cm 4.2 cm

Unlike gases water exerts no pressure if there's a structural problem on a submarine the submarine is not likely to be crushed as it descends

Two gliders collide on a frictionless air track that is aligned along the x axis. Glider A has an initial velocity v0 and glider B is initially at rest. After they collide, A has a velocity 12v0 and B has a velocity 92v0.

The gold has a density of 19300 kg/m3 calculate the mass of one gold bar 1 = 2.54cm

Explain why it is important to have strong core muscles?

Potential energy is the energy an object has because of its A. density. B. size. C. location. D. speed. E. temperature.

How is this career a good fit for you or an individual who would work in this field

The Architecture and Construction career cluster is a group of careers focused on designing, constructing, and maintaining buildings and other structures. assembly of buildings and structures. designing and planning buildings.

What is the acceleration of an electron that has moved between - 1.5V and 3.0V? Assume is began at rest.