All matter in the Universe consists of many substances called elements.

true or faluse

If a radioactive isotope that was injected into your bloodstream has a half-life of 5 hours, how many hours do you have to wait before the amount of this isotope in your body is 1/16 its original amount?

Write a reflection about what you learned and how you can reduce your carbon footprint (ecological footprint)

Dante pushes a box with a force of 12 N to the left. Audrey pushes the box with a force of 8 N to the right. If the box has a mass of 9 kg, find its mas acceleration

You are discussing a material that has a strong resistance to the flow of electrons. This is a description of a A: Semi Insulator B: Semi Conductor C: Conductor D: Insulator

An ideal transformer has LaTeX: N_1 = 1000 N 1 = 1000 (number of windings on the primary side), and LaTeX: N_2 = 8000 N 2 = 8000 (number of windings on the secondary side).

If you lift a five pound object 18 inches how many joules of energy did yo use?

A temperature of 20°C is equal to °F.

Technician A says that when a fuse has popped, it just needs to be replaced, since it performed its job. Technician B says that when a fuse has blown, the circuit needs to be diagnosed because the fuse was probably not the problem. Who is correct? A.

A car starts from rest and moves around a circular track of radius 37.0 m. Its speed increases at the constant rate of 0.440 m/s2. (a) What is the magnitude of its net linear acceleration 18.

A dog walks Along the ground. If the dog applies an action force on the ground, what is the reaction force?