Which single force acts on an object in free fall?

A. Air resistance

B. gravity

C. Friction

D. fluid forces

Why does an astronaut weigh less on the moon than on earth? a. the astronaut has less mass on the moon. b. the astronaut is farther from earthâs center when he or she is on the moon. c.

A 100 kg individual consumes 1200 kcal of food energy a day. Calculate (a) the altitude change, in m, if the food energy content was converted entirely into lifting the indi- vidual under normal earth gravity.

Find the force of attraction in newtons between two charges q1 = + 1 c and q2 = - 2 c, if the distance between them is 14 m.

What is the mass of an object that requires 100n of force in order to accelerate it at 10m/s^2

If you are building a house, which type of windows would you install in your bathroom so that you can have lots of light but privacy as well? A. translucent B. opaque C. transparent D. no windows

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?

Why should scientists write reports and give oral presentations of the steps and results of their in investigations?

Which of these rocks are formed by volcanic activity? select the two correct answers. a. marble b. basalt c. limestone d. granite e. sandstone

Which source is most likely an authority on the subject? Dr. Vale, a pediatrician, discusses electrical circuitry on her home-improvement website. Jonah, an amateur cook, teaches his son how to make the best grilled cheese sandwiches.