A toy car on a string is pulled across a table horizontally. The string is at an angle

of 30°. Which is the correct free-body diagram for this situation?

Which is the most likely reason why scientists change a model?

An electron is in a vacuum near the surface of the Earth. Where should a second electron be placed so that the net force on the first electron to the other electron and to gravity, is zero?

The Jetsons are taking a family vacation. Their car gets 30 miles per gallon in gas mileage. They are traveling for seven hours at a rate of 55 miles per hour. Assuming no stops, how much gas will they need to complete their seven hour trip?

A student measures the length and width of a rectangle to be 40.7 cm and 0.599 cm, respectively. Wanting to find the area (in cm2) of this rectangle, the student multiplies on a calculator and obtains a result of 24.3793.

If two protons and two neutrons are removed from the nucleus of an oxygen atom, a nucleus of which element remains?

The age of the solar system can be established by radioactive dating of

What changes in the original atom are expected as a result of this natural phenomenon

What is a descriptions of an animal cell's nucleus?

What did Issac Newton think he could describe?

Which two states share the property of changing shape in different containers? A. Liquids and gases B. Gases and solids C. Solids and liquids D. Solids and plasmas