A sample of water with mass of 587.00 is heated with 87 kj of energy to a temperature of 518.4 K. The specific heat of water is 1 J-1 kg K-1. What is the initial temperature of the water?

If a beam of light enters one medium from another medium, what quantity does not change? A - Direction B - Speed C - Wavelength D - Frequency

The presence of which magnetic feature best explains why a magnet can act at a distance on other magnets or on objects containing certain metals?

Why does a smaller paper rocket get more distance than a larger one

Explain how atoms of elements form molecules, compounds and mixtures.

Suppose a car is traveling in the negative x-direction and comes to a stop. What is the sign of that car's acceleration? How do you know?

A. A PH202 student lives next to a construction site and sees a crane with a wrecking ball demolish the building next door. The wrecking ball swings along the wall between her house and the neighbor's house.

Sometimes when you are training for event you may notice a decrease in improvement in level out of performance true or false

Two sailboats leave a harbor in the bahamas at the same time. the first sails at 23 mph in a direction 330°. the second sails at 34 mph in a direction 190°.

What conclusion can be drawn from the statement that an element has high electron affinity, high electronegativity, and a high ionization energy? A) The element is most likely from Group 1A or 2A and in period 1 or 2.

When a cyclist rides past you on the street, this is an example of