What do these two changes have in common? filtering air to remove dust and pollen your breath becoming visible on a cold day Select all that apply. Both are only physical changes. Both are chemical changes. Both are caused by cooling. Both are changes of state.

A voltmeter is connected in parallel with the circuit element. True False

Which has the longest wavelength? ultraviolet microwave x-ray infrared

2 Data: V=12V R1=1Omega R2=1Omega R3=1Omega R4=1Omega R5=0.05Omega What is the total power consumed by the glow plugs? square w OK

A car is moving east along a straight,level road at a constant velocity. Which forces form an action/reaction force pair? the force of the tires against the road and the force of the road on the tires the weight of the car and the force of the road pushing up on the car the force of the engine on the car and the force due to friction on the car the normal force on the car and the force of the car pulling on Earth

V=11V R1=4 R2=6 R3=3Omega How many volts will the multimeter in this circuit read? Round calculation to the nearest tenth of a volt. square V

5. What is the equivalent chill temperature for con ditions where the ambient temperature is 10^circ F and the wind speed is 20 mph?

How is Uranus similar to Jupiter? It has rings It has no moons. It has a rocky surface It has methane in its atmosphere.

3. X-rays are high energy, short wavelength electromagnetic energy. a. True b. False 4. The principle of "Bremsstrahlung" is the basis for the production of positrons. a. True b. False 5. The occupational exposure limit for the lens of the eye is 5 rem. a. True b. False

2. Explain how to determine the actual NRR pro- vided by foam plugs with an NRR of 30 in an exposure situation where the 8-hour TWA is 102 dB(A). Do the same for a measured exposure of 102 dB(C).

Hot Questions

When light is reflected from a smooth, plane mirror Multiple Choice the angle of reflection is the same as the angle of incidence. most of the light is scattered into multiple directions. the light is changed to a lower frequency. the wave characteristics are predominant.

When a light wave approaches a glass-air interface from the glass side at the critical angle, the angle of refraction is . __ $43^{\circ }$ $48^{\circ }$ o $45^{\circ }$

Which of the following will induce a greater emf in the secondary coil of a generator? A constant potential in the primary coil. A greater number of loops in the primary coil. A fewer number of loops in the secondary coil. A smaller area in the secondary coil.

Which of the following is accurate about the Coriolis Effect? The apparent deflection of objects is zero at the equator. The apparent deflection of objects is greatest at the equator. The apparent deflection of objects is the same at all locations on the globe. The apparent deflection of objects is the least at the Poles.

The insulation in walls uses which of the following methods to prevent heat transfer? (select all that apply) A convection B radiation C conduction

Heat that we can feel and is measurable is called: Heat cannot be measured Illogical Latent Sensible

The period of the moon's rotation on its axis is the same as its revolution around the Earth much longer than its revolution around the Earth longer or shorter depending on what part of the year we are in much shorter than its revolution around the Earth

33. What are the two ways that light quality can be characterized? direct or indirect light bright and dim light hard and soft light round and curved light

A soccer player runs up behind a soccer ball (of mass 0.50 kg) that is moving at $3.5m/s$ in the same direction as the player. The soccer player kicks it and the ball moves with a speed of $13.5m/s$ What is the magnitude of the impulse (in $kgm/s)$ delivered to the soccer ball? A 5.0 B 7.5 C 10 D 15

What path can a light ray travel through the glass core of an optical fiber? angle of incidence angle of refraction light coupling mode