Jesse wants to know how well a particular brand of car wax protects his car from dirt. Which of the following is a variable that must be kept constant?

a. The use of the car wax

b. How dirty the car gets

c. The kind of car

A cylindrical container with a cross-sectional area of 85.2 cm 2 holds fluid having a density of 806 kg/m 3. The surface of the fluid is open to the atmosphere, and the pressure at the bottom of the tank is 106 kPa. What is the depth of the liquid?

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 50 km/h. A new model of mass 1500 kg takes 0.

When in a hypnotic state, a person's brain waves will be most similar to what other state of consciousness? A. sleeping state B. waking state C. dozing state D. meditative state

Which choice best describes the accepted view of the placement of electrons in an atom? A. Specific locations around the nucleus B immobile C in probable cloud locations D surrounding the protons

Two solid yellow lines on the roadway mean that passing is permitted.

In what way would a digital thermometer be preferable to those from a liquid-based thermometer? Digital thermometer readings are easier to use when performing calculations.

Why does the core of the sun contain more helium and less hydrogen than the surface of the sun?

What happens to a light ray passing through the center of a lens?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.

A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma)