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Quiz
Sections 1 & 2 Quiz
13 pts · 13 Questions · Score: 0 / 13
Q1In science, a "theory" is...
Q2When testing a hypothesis, it is important that the experiment is...
Q3In order to measure position and time, we must first choose...
Q4"Velocity" is a vector because it has both...
Q5"Acceleration" is defined by...
Q6A car accelerates from rest at 2 m/s/s. What is its speed 3 s after the car starts moving?
Q7Galileo couldn't solve the problem of motion because he didn't have...
Q8Using calculus, we can find the position of an accelerating object by...
Q9The acceleration due to gravity on Earth is...
Q10A bullet is dropped from the top of the Empire State Building while another is fired downward from the same location. Neglecting air resistance, acceleration is greatest for the
Q11In our example of projectile motion, the velocity of the object never changes...
Q12Someone at a cliff throws one ball straight up and another straight down at the same initial speed. The ball to hit the ground with the greatest speed will be the one initially thrown
Q13In the "Monkey and Hunter" problem, our hunter should aim...
Quiz
Section 3 Quiz
15 pts · 15 Questions · Score: 0 / 15
Q1"Dynamics" is that branch of mechanics that describes...
Q2"An object in motion stays in motion" is a basic summary of...
Q3A 10-kg wagon is pulled northward with 20 N and southward with 50 N. What is the wagon's acceleration (m/s/s)?
Q4It is equally difficult to accelerate a car on the Moon as on Earth, even though the Moon has less gravity. This is because
Q5"Every force creates an equal and opposite force" is a basic summary of...
Q6The amount of force which propels a swimmer forward is
Q7A box accelerated by 10 N suddenly encounters a second 10 N force in the opposite direction with no friction. The box...
Q8Newton's explanation of gravity states that gravity is created by...
Q9When we usually measure the weight of an object, the force we are actually measuring is...
Q10When you double the speed of an object, the strength of the drag increases by a factor of...
Q11The thrust force works by using...
Q12Door handles are placed on the opposite side of the door from the hinges because...
Q13People use wrenches to loosen bolts rather than just using their fingers because:
Q14The force that keeps a roller coaster from falling at the top of a loop is...
Q15What allows satellites such as the space shuttle or the moon to orbit the Earth?
Quiz
Section 4 Quiz
15 pts · 15 Questions · Score: 0 / 15
Q1The center of mass of a body or system of bodies is the point that moves as though
Q2A piece of putty moving with 1 unit of momentum strikes and sticks to a heavy bowling ball at rest. After sticking, both move with combined momentum of
Q3In order for momentum to be conserved...
Q4A cannon recoils from firing a cannonball. The speed of the cannon's recoil is small because the
Q5Airbags are safety features in cars because they can
Q6It is easier to ride a moving bicycle than one standing still because of:
Q7When angular momentum is conserved, it does NOT depend on
Q8Changing the mechanical energy of a system requires
Q9The potential energy of an object is energy that is based on its
Q10A clerk can lift containers 1 m or roll them up a 2-m ramp to the same elevation. With the ramp, the applied force required is about
Q11Different objects/materials absorb heat differently based on their
Q12At a temperature of zero degrees Celsius, water will be
Q13Energy from friction is stored as
Q14A refrigerator
Q15The Second Law of Thermodynamics occurs because:
Quiz
Section 5 Quiz
12 pts · 12 Questions · Score: 0 / 12
Q1The strength (magnitude) of the electrostatic force depends on which two factors?
Q2Two charged particles are released. As they move, the force on each particle increases. Therefore, the particles have
Q3A material which does not conduct electrical charge very well is known as an...
Q4"Lightning rods" work to protect houses because...
Q5Birds can sit on high-voltage electrical wires without being electrocuted because:
Q6We use a "test charge" in order to map the invisible...
Q7The amount of energy each charge has when subject to the electrostatic force is commonly referred to as the...
Q8When a battery is placed in a circuit, the direction of the flow of charges is always...
Q9A 100 ohm resistor has 0.090 A current in it. What is the voltage across the resistor?
Q10When two lamps are connected in series to a battery, the total electrical resistance of that circuit is
Q11When two lamps are connected in parallel to a battery, the total electrical resistance of that circuit is...
Q12Alternating current is different from direct current in that...