Which makes better packing material: a high density or a low density material why?

Two passenger trains are passing each other on adjacent tracks. train a is moving east with a speed of 13 m/s, and train b is traveling west with a speed of 28 m/s.

If the diameter of the afferent arterioles leading to the glomerulus decreases (vasoconstriction) which of the following is not likely to occur? A Net filtration pressure will decrease. B Urine output will decrease.

How does natural selection produce change in a population of mice?

There is a large box and a small box on a table. The same force is applied to both boxes. The large box moves two feet and the small box moves one foot.

Which of the following statements is the best definition of weather? Weather is the current conditions in the atmosphere. Weather is the usual conditions in the atmosphere. Weather is the average conditions in the atmosphere.

A stunt car with a mass of 1000 kg crashes into a tree on a movie set during the collision acceleration of the car with 3 m what was the force of impact of the collision on the car

A circuit with a current of 400 amp has several lights that have a total resistance equal to 30 ohms. Find the voltage.

How many neutrons does element x have if it's atomic number is 35 and it's mass number 71

The potential difference between the terminal of an electrical heater is 60v when it draw a current 4A fron the source. What current will the heater draw if the potential difference is increased to 120v?

Which answer choice best explains why nuclear reactions release more energy than chemical reactions? Electrostatic forces of repulsion are thousands of times stronger than gravitational forces.