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PHYS 101 Quiz: Temperatures and Heat What’s wrong with the statement “heat rises?” Why do bridges have expansion joints? Air at a temperature of 32° F has a relative humidity of 60%. If the temperature of the same air rises to 40° F, the relative humidity A hot pizza contains specific heat capacity of ice…
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PHYS 101 Quiz: Optics Module 8: Week 8 If the magnification produced by an optical system is negative, the image is Fresnel lenses are Choose the lens having the shortest focal length. A lens that is thinner at the center than the edges Diverging light rays from a nearby object (a few focal lengths away…
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PHYS Quiz: Electricity and Magnetism Module 7: Week 7 A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms. The voltage of the battery is A current can be made to flow in a wire if The greenhouse effect is occurring because…
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PHYS 101 Quiz: Waves and Sound Module 6: Week 6 When a force F stretches a rope of mass per unit length ρ, the velocity of a wave in the rope is given by. You have two ropes of the same length. The mass of the second rope is twice the mass of the first…
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PHYS 101 Quiz: Physics of Matter Module 4: Week 4 In the chemical formula for water, H2O, what does the “2” mean? The buoyant force that keeps a ship afloat is an example of If pressure inside a cylinder with a circular hatch is 2 atm and the radius of the entrance hatch is 12…
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PHYS 101 Quiz: The Study of Motion In expressions like Δv and Δt, Δ stands for A racecar driver steps on the gas, and his racecar travels 20 meters in 2 seconds starting from rest. The acceleration of the racecar is What is the proper abbreviation for ‘kilohertz?’ Instantaneous speed and average speed are equal…
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PHYS 101 Quiz: Newton’s Laws Covers the Learn material from Module 2: Week 2. A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If this same body were placed on a 4,000- mile-high tower, its weight would be The acceleration of a body is…
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PHYS 101 Quiz: Energy and Conservation Laws What are the SI units of momentum? Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. A kid slides down an icy (frictionless) hill starting…
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PHYS 101 Quiz 8 Liberty University What makes pink ink pink? Diverging light rays from a nearby object (a few focal lengths away from the mirror) strike the surface of a concave mirror. After reflecting from the mirror’s surface, the rays will converge at The variation of the speed of light in a transparent medium…
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PHYS 101 Quiz 7 Liberty University Voltage can also be called The type of EM wave having the highest frequency is The type of EM radiation that has wavelength just a bit longer than that of visible light is A quantity that measures the opposition to the flow of charge is When a 12-volt car…
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PHYS 101 Quiz 6 Liberty University What is the symbol traditionally used to represent wavelength? When a force F stretches a rope of mass per unit length ρ, the velocity of a wave in the rope is given by You drop a rock in a pond, and the water waves travel away from the rock…
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PHYS 101 Quiz 5 Liberty University The specific heat capacity of water is about twice the specific heat capacity of ice. From this information, the amount of heat required to boil 1 kg of water is the amount of heat required to melt 1 kg of ice. “Firewalkers” step on the hot ashes and coals…
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PHYS 101 Quiz 4 Liberty University How many elements have been identified? Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward…
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PHYS 101 Quiz 3 Liberty University When we say work is done against a force, we mean the force does Consider a situation where two moving objects collide, stick to each other, and move off together. Consider a situation where a constant force of 25 N acts on an object having a mass of 2…
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PHYS 101 Quiz 2 Liberty University Suppose I push lightly on the chair, and the chair doesn’t move at all. Then the strength of the force the chair exerts on me is When a freely falling object reaches its terminal speed, Which statement is incorrect? The gravitational force on an orbiting satellite due to the…
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PHYS 101 Quiz 1 Liberty University Two microcuries is The velocity of the moving object is A ball thrown upwards reaches a maximum height and then comes back down to the original level. An object moving in a circle undergoes What is the period of a signal that has a frequency of 60 Hz? What…