What is a trains average speed if it travels 225 kilometers in 2.5 hours

The primary matallic element that's added to stool to make stainless steel is

Testable hypotheses that lead to experiments usually describe a relationship between two measurable variables. a measurable variable and a subjective opinion. more than two subjective opinions. more than two measurable variables.

Which of the following is an example of a technological solution to water pollution in a local pond?

Having unclear expectations is part of which characteristic of adolescence? A. increased diction making, B. Increased pressure, C. The search for self, D. Undefined status

What will most people think when you say no with confidence in situations where other people are smoking? a) You are sticking with your decision. b) You are being influenced by advertisements. c) You are being pressured by peers. d) You are boring

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A person lifts a 4.5 kg cement block a vertical distance of 1.2 m and then carries the block horizontal - ly a distance of 7.3 m. determine the work done by the person and by the force of gravity in this process.

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

A 5.1 kg black bear cub weighs 49.98 N. The cub is carried by its mother up into the safety of a white pine tree.

Which location is associated with persistent upwelling of cold water to the ocean surface?