Radioactive decay of 40k in an igneous rock has resulted in a ratio of 25 percent 40k atoms to 75 percent of 40ar and 40ca atoms. How many years old is this rock?

What is an urban area Cities and towns Farms and crops Countryside's Mountain peaks

Which of the following is an example of verbal communication? Hand gestures Conversation Physical distance Tone of voice

Will give brainliest- Judging is: Select the best answer choice. A. One's openness and flexibility to new information B. Perceiving people C. Responding to what the world throws at an individual D. Imposing order on the outside world

Just a very thoughtful question. Why is it so hard for one to break up with someone that they really love? What is your reasoning?

Identify the correct sentence. A. Its imperative that the dishes are washed before the guests arrive. B. It's imperative that the dishes are washed before the guests arrive. C. It's imperative that the dishes are washed before the guests' arrive. D.

Which of the following is not an inherited trait? jumping through a hoop ear size tail length feather color

In the connectionism information-processing model, what is the first place memories are stored? a. Short-term memory b. Long-term memory c. Semantic memory d. Sensory memory e. Procedural memory

A U. S. passport is a valid form of ID? Ture or False

In the figure, we must apply a force of magnitude 80.0 N to hold the block stationary at x = - 3.0 cm. From that position, we then slowly move the block so that our force does + 7.

What was the constitutions primarily designed to do?