If two resistors of value r are connected in series and then in parallel, what is the difference in equivalent resistance in both cases?

a) 0 b) 3R/2 c) R/2 d) 2/R

What would happen if the gravity on earth decreases by a small about?

A car has a momentum of 20,000 kg • m/s. What would the car's momentum be if its velocity doubles? 10,000 kg • m/s 20,000 kg • m/s 40,000 kg • m/s 80,000 kg • m/s

If you use a marble of radius 11 mm for mercury, how far from the sun must you place your outermost planet? express your answer with the appropriate units.

Light enters air from water. The angle of refraction will be

A temperature of 200°F is equivalent to approximately a. 37.8°C. b. 232°C. c. 93.3°C. d. 840°C.

Which of these is the best reason for proper nutrition? A. To ensure that you will be skinny B. To protect yourself against certain diseases C. To improve your intelligence D. To ensure that you will get good grades

And object has a mass of 15g it has a volume of 7.5ml. find the density of the object.

I need this answered quickly. is the branch of science for naming and classifying organisms based on their natural relationships? A-physics B-taxonomy C-genetics D-biology

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas?

A 500-kilogram sports car accelerates uni- formly from rest, reaching a speed of 30 me- ters per second in 6 seconds. What distance has the car traveled during the 6 seconds?